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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 3151. |
Explain female reproductive system. |
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Answer» Thanks Yogita ? The\xa0female reproductive system\xa0is active before, during and after fertilization as well. It consists of the following parts:\tA pair of ovaries:\xa0Ovaries produce and store ovum in them. They also produce a female hormone called estrogen.\tFallopian tubes (Oviducts):\xa0They are the site of fertilization. They connect ovaries with the uterus.\tUterus:\xa0Uterus is the site of development for the embryo.\t******:\xa0It is the part which connects the cervix to the external female body parts. It is the route for the ***** during coitus as well as a fetus during delivery.Female reproductive system has two functions –\tProduction of female gamete called ovum/egg.\tProviding nutrition and protecting the developing embryo.During puberty, eggs in the ovaries start to mature. One of the ovaries releases the matured ovum in every 28 to 30 days and is called ovulation. |
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| 3152. |
Write any two ways by which water pollution affect the aquatic organism. |
| Answer» Organic matter and nutrients cause an increase in aerobic algae and deplete oxygen from the\xa0water\xa0column. This causes the suffocation of fish and other\xa0aquatic organisms. Sulfate particles from acid rain can cause harm to the health of\xa0marine\xa0life in the rivers and lakes it contaminates and can result in mortality.\xa0A lack of sufficient oxygen kills off aquatic life and plants, resulting in dead zones and threatening the survival of the ecosystem. Land\xa0animals, birds, and humans can also be harmed by the contaminated\xa0water, or by consuming fish or shellfish that lived in contaminated\xa0water. | |
| 3153. |
How is the life of organisms living in water affected when water gets polluted? |
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Answer» Thank you Almost all types of water pollutants affect the life forms living in the water. The pollutants encourage the growth of some life forms and can harm the growth of other life forms. This affects the balance between various organisms that persists in that system (ecosystem). With the increase in the amount of organic wastes in water, bacteria multiply very rapidly thus using up the available oxygen. The lack of oxygen hence caused kills the fish and other aquatic animals.Aquatic organisms are used to a certain range of temperature in the water body where they live, a sudden marked change in this temperature can be very dangerous for them (they are cold blooded animals), e.g., it affects breeding of aquatic animals. The eggs and larvae of various animals are particularly susceptible to temperature changes. |
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| 3154. |
What is third law and plz take 2 example |
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Answer» I am say only 2 example Newton’s Third Law of Motion states: ‘To every action there is an equal and opposite reaction’.\xa0Examples1.A gun recoils when a bullet is fired from it:2.A man walking on the ground\xa03.Rowing a boat\xa0 |
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| 3155. |
What is techquie to separte cream from milk |
| Answer» The process of centrifugation is used in dairies to separate cream from milk .\xa0Centrifugation is a method for separating the suspended particles of a substance from a liquid in which the mixture is rotated at a high speed in a centrifuge machine.The milk is put in a closed container in big centrifuge machine .when the centrifuge machine is switched ON, the milk is rotated at very high speed in a container.\xa0Due to this process, milk separates into cream and skimmed milk.\xa0The cream being lighter floats over the skimmed milk.\xa0 | |
| 3156. |
Prove F= ma by second law of motion |
| Answer» Newton’s second law of motion states that the time rate of change of momentum is directly proportional to the resultant of external force and change in momentum is in the direction of the resultant external force.Mathematically, it states that the external force acting on a body is equal to the product of mass and acceleration of the body. | |
| 3157. |
Where apical meristem tissue found?? |
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Answer» Apical meristem is a region of growth found in the plant’s shoots tips and root tips as well as the tips of new leaves and shoots. Apical meristem belongs to one of the four types of meristems. The other three are categorized as lateral meristems, namely: cork cambium, vascular cambium, and the intercalary meristem. It is wrong answer?1 above Meristematic tissue |
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| 3158. |
What is ozone hole? Name the gases which is responsible for its presence. |
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Answer» we must fill the ozone layer otherwise if this continues the next genrations will suffer (a) In the upper layers of the atmosphere, a layer of ozone is formed, which gets depleted due to chloro fluoro carbons and creates a hole called ozone hole.(b) Ozone hole is found above Antartica, over the North pole.(c) UV radiation will reach the earth and cause diseases like - cancer, reduce immunity and reduce crop yield.The ozone layer present in the stratosphere acts as a protective shield. It saves the earth from the harmful ultraviolet rays of the sun. The compounds containing CFCs (chlorofluorocarbons) are mainly responsible for ozone layer depletion as these compounds react with ozone in the presence of ultraviolet rays to form oxygen molecule and thus, destroying ozone.\xa0 |
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| 3159. |
what is photosyntgesis |
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Answer» The process by which plants take the carbon dioxide of the atmosphere and convert it into substances that they can use is called photosynthesis. In this process they release Oxygen. The process by which plants take the carbon dioxide of the atmosphere and convert it into substances that they can use is called photosynthesis. In this process they release Oxygen. The process by which plants take the carbon dioxide of the atmosphere and convert it into substances that they can use is called photosynthesis. In this process they release Oxygen. Photosynthesis\xa0is a process plants use to convert the light energy from the sun into chemical energy that they can use• The chemical energy is a molecule of sugar called glucose• Plants and animals use this for food. |
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| 3160. |
Define conduction |
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Answer» Conduction :- Conduction is the process in which heat and electricity can pass through any object or material Conduction :- Conduction is the process in which heat and electricity can pass through any object or material. Conduction is the process in which heat and electricity can pass through any object or material. “Conduction is the transfer of heat from the hotter part of the material to its colder part without the actual movement of the particles. What I want to say here is that in the process of conduction there is no net movement of the particles of the body. Heat passes through solids by conduction only. |
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| 3161. |
HOW CHARGE OF POLYATOMIC ION IS CALCULATED ,HOW NET CHARGE ON THEM IS CALCULATED? |
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| 3162. |
Chemistry .What is different between ionic compound and molecular compund? |
| Answer» 1. Molecular compounds are pure substances formed when atoms are linked together by sharing of electrons while ionic compounds are formed due to the transfer of electrons.2. Molecular compounds are made due to covalent bonding while ionic compounds are made due to ionic bonding.3. Molecular compounds are formed between two non-metals while ionic compounds are formed between metals and non-metals.4. Molecular compounds are poor electrical conductors while ionic compounds are good conductors.5. Molecular compounds can be in any physical state ‘“ solid, liquid, or gas. Ionic compounds are always solid and crystalline in appearance.6. There are a lot of molecular compounds than ionic compounds. | |
| 3163. |
Explain the law of conservation of momentum? |
| Answer» Law of conservation of momentum states that : For two or more bodies in an isolated system acting upon each other, their total momentum remains constant unless an external force is applied. Therefore, momentum can neither be created nor destroyed.Newton’s third law states that for a force applied by an object A on object B, object B exerts back an equal force in magnitude, but opposite in direction. This idea was used by Newton to derive the law of conservation of momentum.Consider two colliding particles A and B whose masses are m1\xa0and m2\xa0with initial and final velocities as u1\xa0and v1\xa0of A and u2\xa0and v2\xa0of B. The time of contact between two particles is given as t.A=m1(v1−u1)\xa0(change in momentum of particle A)B=m2(v2−u2)\xa0(change in momentum of particle B)FBA=−FAB\xa0(from third law of motion)FBA=m2∗a2=m2(v2−u2)/tFAB=m1∗a1=m1(v1−u1)/tm2(v2−u2)/t=−m1(v1−u1)/t\tm1u1+m2u2=m1v1+m2v2\t | |
| 3164. |
Difference between acute disease and chronic diseases |
| Answer» \tAcute DiseasesChronic DiseasesThese diseases occur suddenly.They occur over a prolonged period.They last for a shorter period.They last longer, even for a lifetime.They do not cause damage to the body.They damage the body of the patient.They are not fatal.Chronic diseases are fatal.Eg., common cold, jaundice, typhoid, malariaEg., HIV, Elephantiasis, Cancer, Tuberculosis\t | |
| 3165. |
Which pathogen causes sleeping sicknesses |
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Answer» Sleeping sicknessdSleeping sickness is an infection caused by tiny parasites carried by certain flies. It results in swelling of the brain. |
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| 3166. |
What is phloem fibre |
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Answer» What is trajactory Phloemfibres:\u200b\u200bThey are also called the bast fibres. These are the sclerenchymatous fibres.These are much elongated fibres which do not have branches. The fibres have pointed, needle-like apices.The cell wall of phloem fibres is quite thick due to which they provide mechanical support to the plant.At maturity, these fibres lose their protoplasm and become dead.\\sf{\\underline{\\underline{Occurrence:}}}Occurrence:\u200b\u200bThese fibres are generally absent in the primary phloem but are found in the secondary phloem.\\sf{\\underline{\\underline{Functions:}}}Functions:\u200b\u200bPhloem fibres provide the mechanical support to the plant.\\sf{\\underline{\\underline{Commercial\\:use:}}}Commercialuse:\u200b\u200bPhloem fibres of jute, flax and hemp are used commercially for various purposes. Part of phloem tissueAlso known as phloem schlerenchyma |
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| 3167. |
Find the formula unit mass of sodium hydrogen carbonate |
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Answer» NAHCO3= 23*1+1*1+12*1+16*323+1+12+4824+6074u The sum of the atomic mass of all atoms in the formula of the compound is called as formula unit mass.In\xa0NaHCO_3NaHCO3\u200b\xa0the following\xa0atoms\xa0are present:Sodium (Na)Hydrogen (H)Carbon (C)Oxygen (O)The\xa0number of atoms\xa0present in the compound are as follows:Sodium (Na) - 1Hydrogen (H) - 1Carbon (C) - 1Oxygen (O) - 3Atomic mass of atoms\xa0present in the compound are as follows:Sodium (Na) - 1 (23)Hydrogen (H) - 1 (1)Carbon (C) - 1 (12)Oxygen (O) - 3(16) = 48The formula unit mass of\xa0NaHCO_3NaHCO3\u200b\xa0= 23+1+12+48 = 84uLearn more about formula unit massTell me the difference between formula unit mass and molecular masshttps://brainly.in/question/6815520Calculate formula unit mass of Al2[CO3]3 Explanation:\tThe sum of the atomic mass of all atoms in the formula of the compound is called as formula unit mass.\tIn\xa0\xa0the following\xa0atoms\xa0are present:\tSodium (Na)\tHydrogen (H)\tCarbon (C)\tOxygen (O)\tThe\xa0number of atoms\xa0present in the compound are as follows:\tSodium (Na) - 1\tHydrogen (H) - 1\tCarbon (C) - 1\tOxygen (O) - 3\tAtomic mass of atoms\xa0present in the compound are as follows:\tSodium (Na) - 1 (23)\tHydrogen (H) - 1 (1)\tCarbon (C) - 1 (12)\tOxygen (O) - 3(16) = 48\tThe formula unit mass of\xa0\xa0= 23+1+12+48 = 84u Formula unit mass of\xa0NaHCO3\u200b=\xa0Mass of\xa0Na+\xa0Mass of\xa0H+\xa0Mass of\xa0C+\xa0Mass of\xa0O=23\xa0u+1\xa0u+12\xa0u+48\xa0u=84\xa0u |
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| 3168. |
Write the type of alloy 1. Homogenous 2. Heterogeneous |
| Answer» Mixtures which have uniform composition throughout are called Homogeneous Mixture. For example – mixture of salt and water, mixture of sugar and water, air, lemonade, soda water, etc.Mixtures which do not have uniform composition throughout are called Heterogeneous Mixture. For example – mixture of soil and sand, mixture of sulphur and iron fillings, mixture of oil and water etc. The boundaries of constituent particles of a homogeneous mixture can be identified easily; as a homogeneous mixture has two or more distinct phases.An alloy is a material composed of two or more metals or a metal and non metal. It may be a solid solution of the elements of single phase or a mixture of two or more metallic phases. Solid alloys give a single solid phase microstructure. Alloys are used where their properties are superior to those of pure component elements. Examples are steel,solder,brass,amalgam etc. | |
| 3169. |
How will the equation of motion for an object moving with a uniform velocity change? |
| Answer» We know that, the equations of uniformly accelerated motion are\xa0For an object moving with uniform velocity (velocity which is not changing with time), then accelerationa = 0.So, equations of motion will become (putting a = 0 in above equations)(i) v =u (ii) s =ut(iii) v2\xa0=u2\xa0 | |
| 3170. |
Brain cancer is cause by |
| Answer» Brain cancer can arise from many different types of brain cells (primary brain cancer) or occur when cancer cells from other parts of the body spread (metastasize) to the brain. True brain cancers are those that arise in the brain itself. | |
| 3171. |
What are the two major causes of over exploitation of animal resorces |
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Answer» Chj humid sicko Overexploitation, also called overharvesting, refers to harvesting a renewable resource to the point of diminishing returns. Continued overexploitation can lead to the destruction of the resource. The term applies to natural resources such as: wild medicinal plants, grazing pastures, game animals, fish stocks, forests, and water aquifers.In ecology, overexploitation describes one of the five main activities threatening global biodiversity.\xa0Ecologists use the term to describe populations that are harvested at a rate that is unsustainable, given their natural rates of mortality and capacities for reproduction. This can result in extinction at the population level and even extinction of whole species. In conservation biology, the term is usually used in the context of human economic activity that involves the taking of biological resources, or organisms, in larger numbers than their populations can withstand. The term is also used and defined somewhat differently in fisheries, hydrology, and natural resource management.Overexploitation can lead to resource destruction, including extinctions. However, it is also possible for overexploitation to be sustainable, as discussed below in the section on fisheries. In the context of fishing, the term overfishing can be used instead of overexploitation, as can overgrazing in stock management, overlogging in forest management, over-drafting in aquifer management, and endangered species in species monitoring. Overexploitation is not an activity limited to humans. Introduced predators and herbivores, for example, can overexploit native flora and fauna. |
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| 3172. |
What is a kinetic energy of an object? |
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Answer» Kinetic energy is energy possessed by an object by virtue of it\'s motion Kinetic Energy\tIt is the energy possessed by a body due to its motion. Kinetic energy of an object increases with its speed.\tKinetic energy of body moving with a certain velocity = work done on it to make it acquire that velocity |
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| 3173. |
- of plant tissue is not very specialised as compared to animals |
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Answer» zzz66uuhvcfg No,it is specialised |
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| 3174. |
Calculate the molecular mass of sulphuric acid |
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Answer» H2SO4= 1*2+32*1+16*42+32+6498u The molar mass of hydrogen is 1Molar mass of sulphur (S) is 32Molar mass of oxygen (O) is 16Now ,2(1)+32+4(16) = 98Molar mass of sulphuric acid i.e.\xa0H2\u200bSO4\u200b\xa0is 98. |
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| 3175. |
Which organ Idol is solid to be powerhouse of the cell |
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Answer» Mitochondria mitochondria is called power house of the cell mitochondria is called power house of the cell Mitochondria is power house of cell Mitochondria is called the\xa0powerhouse of the cell. |
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| 3176. |
Laboratory experimentATM |
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| 3177. |
Difference between symptoms and sign of disease. |
| Answer» \tBasis of ComparisonSignsSymptomsMeaningIt is evidence of disease that means it is observed by others.It is evidence of diseases which only a person can feel.NatureObjectiveSubjectiveObservation MethodVisible and observable by health care professionalsExperienced by the sufferer or patients who experiences symptomsHow to CheckCan measure by checking temperature, taking X-ray, monitoring pulse rate, blood test and more.Cannot be measured as the person only feels them.TypesThree types: Anamnestic signs Prognostic signs Diagnostic signsThree types: Chronic symptoms Relapsing symptoms Remitting symptomsExampleCancer, AIDS, Asthma, Tuberculosis which health care professionals can specifically diagnoseBody pain, headache, itching, nausea, felt by the sufferer or patient only.VisibilityVisibleVague\t | |
| 3178. |
5kg of sugar is dissolved in solution calculated the mass% by volume |
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Answer» Ask full questionWhat is volume of solution?? \tBy calculating the\xa0mass by volume percentage of the solution, its\xa0concentration\xa0can be depicted.\tTo calculate the mass by volume percentage of the given solution, the following calculation must be done:Mass by volume percentage =\xa0Mass by volume percentage =\xa0Mass by volume percentage =\xa0Mass by volume percentage =\xa0Mass by volume percentage = 2 |
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| 3179. |
How are mass molar mass and number of moles related to each other |
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| 3180. |
Symbols of tin,bromine and neon |
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Answer» Sn Br and Ne Symbol for tin is "sn"Bromine "Br"Neon "Ne" Symbols of Tin : Sn\xa0bromine : Br\xa0Neon: Ne |
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| 3181. |
Different between communicable and non communicable disease |
| Answer» \t\xa0Communicable diseasesNon communicable diseases\xa0It can be transmitted from an infected person to a healthy person.\xa0It cannot be transmitted from an infected person to a healthy person.\xa0It is caused by pathogenic micro organisms.It is caused by the tissue degeneration, nutrition or hormone deficiency and tumor formation.\xa0\xa0Examples: Typhoid, cholera, etc.\xa0Examples: Diabetes, Cancer, etc.\t | |
| 3182. |
A body of mass 2kg is moving with velocity of hundred metre per second calculate its momentum |
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Answer» 200 kgm/s^2 P=m*v P= 2*100 = 200kg m/s 200 kg m/s Momentum=product of mass and velocityp=mvp=2kg*100m/sp=200 kg m/s Given, Mass (m) = 2 kg Velocity(v) = 100 m/sTherefore, momentum (p)= mv= (2 × 100) kg m/s= 200 kg m/s |
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| 3183. |
Kinetic energy of body is E, velocity is doubled then kinetic energy will be |
| Answer» If velocity is doubled,\xa0Kinetic Energy\xa0increases by 4 times.Kinetic energy of a body is the energy possessed by it, by virtue of its motion, i.e. if the body is moving it will always have kinetic energy.so kinetic energy is directly proportional to v^2coz mass is constantso new kinetic energy changes as (2v)^2 =4v^2so kinetic energy increases 4 times | |
| 3184. |
Name different types of cell |
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Answer» Prokaryotic and eukaryotic cells Prokaryotic and eukaryotic cells A cell is the structural and fundamental unit of life. The study of\xa0cells from its basic structure to the functions of every cell organelle is called Cell Biology. Robert Hooke was the first Biologist who discovered cells.All organisms are made up of cells. They may be made up of a single cell (unicellular), or many cells (multicellular). Mycoplasmas are the smallest known cells. Cells are the building blocks of all living beings. They provide structure to the body and convert the nutrients taken from the food into energy.Cells are complex and their components perform various functions in an organism. They are of different shapes and sizes, pretty much like bricks of the buildings. Our body is made up of cells of different shapes and sizes. |
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| 3185. |
What is called biodiversity? |
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Answer» \tBiodiversity describes the richness and variety of life on earth. It is the most complex and important feature of our planet. Without biodiversity, life would not sustain.\tThe term biodiversity was coined in 1985. It is important in natural as well as artificial ecosystems. It deals with nature’s variety, the biosphere. It refers to variabilities among plants, animals and microorganism species.\tBiodiversity includes the number of different organisms and their relative frequencies in an ecosystem. It also reflects the organization of organisms at different levels.\tBiodiversity holds ecological and economic significance. It provides us with nourishment, housing, fuel, clothing and several other resources. It also extracts monetary benefits through tourism. Therefore, it is very important to have a good knowledge of biodiversity for a sustainable livelihood. \xa0\xa0The variety of animals and plants living in a given geographical area is called biodiversity of that geographical area.“Biodiversity\xa0is the variation among living organisms from different sources including terrestrial, marine and desert ecosystems, and the ecological complexes of which they are a part. |
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| 3186. |
What is isothermic |
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Answer» Puchon pawan isothermic(Adjective)Of equal or constant temperature with respect to space, volume, or pressure 1 question ka answer bataega koi mujhe?? Anyone talling me Chemistry |
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| 3187. |
Why it is difficult to make antibodies against virus |
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Answer» Viruses cannot be treated by antibiotics as viruses do not have a cell wall.Antibiotics can kill a bacteruim as the antibiotics damages the cell wall of the bacterium. If there would be no cell wall, so the bacterium will automatically die. So for virus, antibiotics are of no use as viruses don\'thave any cell wall. For viruses, we take anti-viral drugs. Thank you so much Because they are dead when they are outside our body..and when they are inside our body they take our nutrition and lives in our body and harm us |
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| 3188. |
What is the deleted syllabus of cbse class 9 |
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Answer» Oooooo???? CBSE Class 9 Science (086) - Deleted portion (Theory):\tUnit I: Matter-Nature and Behaviour ChapterTopicsMatter in Our SurroundingsDefinition of matter; solid, liquid and gas; characteristics - shape, volume, density; change of state-melting (absorption of heat), freezing, evaporation (cooling by evaporation), condensation, sublimation.Unit II: Organization in the Living World ChapterTopicsDiversity in Living OrganismsDiversity of plants and animals-basic issues in scientific naming, basis of classification. Hierarchy of categories / groups, Major groups of plants (salient features) (Bacteria, Thallophyta, Bryophyta, Pteridophyta, Gymnosperms and Angiosperms). Major groups of animals (salient features) (Non-chordates upto phyla and chordates upto classes).Unit III: Motion, Force and Work ChapterTopicsFloatationThrust and Pressure. Archimedes’ Principle; Buoyancy; Elementary idea of Relative Density.SoundNature of sound and its propagation in various media, speed of sound, range of hearing in humans; ultrasound; reflection of sound; echo and SONAR. Structure of the Human Ear (Auditory aspect only).Unit V: Food Production ChapterTopicsImprovement in Food ResourcesPlant and animal breeding and selection for quality improvement and management; Use of fertilizers and manures; Protection from pests and diseases; Organic farming.\t\xa0 |
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| 3189. |
Water motion |
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| 3190. |
What are motion |
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Answer» Movement of objects Movement in any object from one point to another is known as motion Motion, in physics, change with time of the position or orientation of a body. ... Motion that changes the orientation of a body is called rotation. In both cases all points in the body have the same velocity (directed speed) and the same acceleration (time rate of change of velocity). Movement of any object from one position to another position with respect to the observer is called as Motion. |
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| 3191. |
What is the main function of striated muscles |
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Answer» Skeletal(Striated) Muscle:Structure:\xa0Skeletal muscle is called "striated" because of its appearance consisting of light and dark bands visible using a light microscope. A single skeletal muscle cell is long and approximately cylindrical in shape, with many nuclei located at the edges (periphery) of the cell.Function:\xa0Movement of the skeleton under conscious control, including movement of limbs, fingers, toes, neck, etc.Movement of tissues of facial expression under conscious control, e.g. ability to smile and to frown The primary function of striated muscles is to generate force and contract in order to support respiration, locomotion, and posture (skeletal muscle) and to pump blood throughout the body (cardiac muscle). \xa0Skeletal(Striated) Muscle:Structure:\xa0Skeletal muscle is called "striated" because of its appearance consisting of light and dark bands visible using a light microscope. A single skeletal muscle cell is long and approximately cylindrical in shape, with many nuclei located at the edges (periphery) of the cell.Function:\xa0\tMovement of the skeleton under conscious control, including movement of limbs, fingers, toes, neck, etc.\tMovement of tissues of facial expression under conscious control, e.g. ability to smile and to frown. |
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| 3192. |
Difference between the Displacement Vs Distance |
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Answer» \tDistanceDisplacementThe complete length of the path traveled by an object to go from one point to another is called distanceThe shortest distance between two points is called displacementDistance is a scalar quantity, which means it only has a magnitudeDisplacement is a vector quantity which means it has magnitude and directionDistance can only have positive valuesDisplacement can have both positive and negative valuesDistance depends on the length of the path traveledDisplacement depends only on the initial and final point regardless of the path traveled\t\xa0 The shortage distance traveled by an object in straight line known as displacement.The path traveled by an object is known as distance.How so ever the time and how long it traveled doesn\'t matter |
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| 3193. |
Find and write about the major factors which lead to water pollution. |
| Answer» 1. Adding toxic chemicals to water bodies, such as adding chemical wastes that contain harmful things such as pesticides, insecticides, is lethal for marine life.\xa02. For example, removing beneficial substances from water bodies depleting dissolved oxygen and nutrients this has adverse effects on aquatic life.\xa03. Shift of water temperature of bodies of water. To survive in those temperature levels the marine animals are adopted. A sudden change in temperature may affect aquatic animal breeding, their eggs and larvae etc. For starters, pouring cold water from dams adversely affects the aquatic life. | |
| 3194. |
Give scientific reason: why the weight of an object at the equator is less than at the poles? |
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Answer» Because weight changes due to gravitational force and the gravitational forces are different in equator and poles. Due to the change in the value of g no |
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| 3195. |
mc |
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| 3196. |
We keep air in which category either pure or mixture. |
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Answer» A homogeneous mixture Mixture Mixture because air is made up of many gases Mixture may be |
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| 3197. |
When a force is exerted on an object it can change its |
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Answer» Potision Potion Position Motion \xa0A\xa0force\xa0acting on an\xa0object\xa0causes\xa0the object\xa0to\xa0change its\xa0shape or size, to start moving, to stop moving, to accelerate or decelerate. When there\'s\xa0the\xa0interaction between two\xa0objects\xa0they exert a\xa0force\xa0on each other, these\xa0exerted forces\xa0are equal\xa0in\xa0size but opposite\xa0in\xa0direction. |
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| 3198. |
Can anyone give Structure of atoms notes . please |
| Answer» Contribution to the Atomic theory Timeline\tMore than 2400 years ago, he named the smallest piece of matter “ATOMOS,”\xa0meaning “not to be cut.”\tAtoms were small, hard particles that were all made of the same material but were different shapes and sizes.\tAtoms were infinite in number, always moving and capable of joining together\tDalton’s Atomic theory:\tFirst recorded evidence that atoms exists.\tUsing his theory, Dalton rationalized the various laws of chemical combinationClick on the given link for notes:Structure of the Atoms class 9 Notes Science | myCBSEguide ... | |
| 3199. |
What do you understand by Absolute Zero temperature? |
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Answer» Absolute zero is the lower limit of the thermodynamic temperature scale, a state at which the enthalpy and entropy of a cooled ideal gas reaches its minimum value, taken as 0. The Kelvin scale is an absolute, thermodynamic temperature scale using as its null point absolute zero, the temperature at which all thermal motion ceases in the classical description of thermodynamics. Zaid did you get your answer Absolute zero temperature at which thermodynamic system has the lowest energy. It corresponds to -273.15^o celcius on Celsius scale |
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| 3200. |
What are the three laws of Kepler\'s ?? |
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Answer» Yogita ingle you are a teacher According to Kepler’s first law,” All the planets revolve around the sun in elliptical orbits having the sun at one of the foci”.\xa0The point at which the planet is close to the sun is known as perihelion and the point at which the planet is farther from the sun is known as aphelion.Kepler’s second law states ” The radius vector drawn from the sun to the planet sweeps out equal areas in equal intervals of time”According to Kepler’s law of periods,” The square of the time period of revolution of a planet around the sun in an elliptical orbit is directly proportional to the cube of its semi-major axis”.T2\xa0∝ a3 |
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