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7101.

Weight moved by a machine.​

Answer» TION:PROVIDE PROPER QUESTION for ANSWERS
7102.

Friction is increased if a) Oil is sprayedb) The surface are made wetc) The surface are made dryd) The surface are polished​

Answer»

b is the CORRECT ANSWEREXPLANATION:PLEASE MARK as Brainlist ♥️

7103.

What is light pollution ​

Answer» LIGHT POLLUTION is the presence of anthropogenic and artificial light in the night environment. It is exacerbated by excessive, misdirected or OBTRUSIVE use of light, but even CAREFULLY used light fundamentally alters natural conditions. W
7104.

10 In the following diagrams (Fig 4.19), measure and write the angle of incidence and draw thereflected ray in each case.​

Answer»

I can't SEE the QUESTION PROPERLY

7105.

Why is the centre of a cyclone calm? Give short explanation.​

Answer»

The eye is so calm because the now STRONG surface winds that converge towards the center never reach it. The CORIOLIS force deflects the WIND slightly away from the center, causing the wind to rotate around the center of the hurricane (the eye wall), LEAVING the exact center (the eye) calm.

7106.

Force applied on a machine​

Answer» MAKES it to MOVE from ONE PLACE to ANOTHER
7107.

True/FalseThe SI unit of electrical resiotivity is ohm ______​

Answer» FALSE Explanation:SI UNIT of RESISTANCE is ohm
7108.

10 In the following diagrams (Fig. 4.19), measure and write the angle of incidence and draw thereflected ray in each case,​

Answer»

I am so SORRY i NEEDED poimts so thays why i had to do this

7109.

True/FalseThe term cell was coined by Robert hooke_______​

Answer»

️= inboxhave a GREAT DAY AHEAD ❣️✌️☺️

7110.

True/False 1) The ridge -nosed and the diamond back are snakes that belong to the boa family______​

Answer»

falseyour ANSWER PLEASE MARK as branilylist

7111.

11. The diagram in Fig 4.20 shows an incident ray AO and the normal ON on a plane mirror. Drawthe reflected ray. State the law you use to drawthe direction of the reflected ray.​

Answer»

is EQUAL to ANGLE2

7112.

Draw the ray diagrams for the following cases and write the nature of image formed in each case. i) At the focus of a con cave mirror ii) At the centre of curvature.

Answer» YES this is POSSIBLE you can do this
7113.

True/False1) The black mamba is named after the colour of its skin_____​

Answer»

Black mambas are ACTUALLY BROWN incolor. They get their NAME from the blue-black of the INSIDE of theirmouths, which they display whenthreatened.

7114.

True/False1) Burmese pythons have poor eyesight ______​

Answer» TRUE BURMESE PYTHON have POOR EYESIGHT
7115.

15) The following diagram (Fig. 4.22) shows a point object O placed in front of a plane mirror. Taketwo rays from the point 0 and show how theimage of O is formed and seen by the eye,​

Answer»

following are the following are the following SURDS in the following surds in the following surds I am dng the following are I i the radical form and adjust the form below to CONTINUE

7116.

Is the ratio between load and effort.​

Answer»

The ratio of the effort-to-load FORCES is the reciprocal of  the lengths of the corresponding LEVER arms.HOPE IT HELPS !!!

7117.

3.is the ratio between load and effort.​

Answer»

Can you ASK clearlyExplanation:I didn't UNDERSTAND QUESTION

7118.

Make an experiment to show that electric energy can be converted to heat energy.​

Answer»

An electric heater is an electrical appliance that converts electrical energy into heat. The heating ELEMENT INSIDE every electric heater is simply an electrical resistor, and works on the PRINCIPLE of JOULE heating: an electric current through a resistor converts electrical energy into heat energy.

7119.

A particle moving with uniform acceleration from A to B along a straight line has velocities v1 and v2 at A and B, respectively. If C is the mid-point between A and B, then determine the velocity of the particle at C. Please explain in a simple way

Answer» FOLLOW me and MARK me as BRAIN LIST
7120.

an object with the height of 6 cm is placed in the front of concave lens of focal length 20 cm is placed at a distance of 30cm find nature size and position the image and also draw the diagram​

Answer»

n:-Height of the object (ho)= 6 cm FOCAL length(f) = - 20 cm Object distance(u) = - 30 cm ( Always measured from the optical center ) By using lens formula ,➽ 1 / f =  1 / v - 1 / u On rearranging ,➽ 1 / v = 1 / f - 1 / u ➽ 1 / v = 1 / - 20 + 1 / 30 ➽ 1 / v = - 3 + 2 / 60 ➽ 1 / v = - 1 / 60 ➽ v = -  60 cm The image is formed at a distance of 60 cm from the optical center on the same SIDE as that of the object We know that ,➽ m = v / u = HI / ho ➽ hi = v x ho / u ➽ hi = - 60 x 6 / - 30 ➽ hi = 12 cm The image formed is enlarged , erect  and virtual

7121.

Write short notes on parallel and series circuit​

Answer»

In a series circuit, all COMPONENTS are connected end-to-end, forming a single path for current FLOW. In a parallel circuit, all components are connected across each other, forming exactly two sets of electrically COMMON pointsExplanation:THANK you ☺️

7122.

In a machine the ................ energy is always less than ............energy​

Answer»

tion:।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।। PLZZZ FOLLOW me ।।।।।।।। mark me as a brainlist ANSWER ।,।।।।।।,।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।। plzzz follow me ।।।।।।।। mark me as a brainlist answer ।,।।।।।।,।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।। plzzz follow me ।।।।।।।। mark me as a brainlist answer ।,।।।।।।,।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।। plzzz follow me ।।।।।।।। mark me as a brainlist answer ।,।।।।।।,।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।।

7123.

5. You are provided with (a) a plane mirror, (b) a convex mirror and (c) a concave mirror.How will you distinguish between them, withouttouching them?​

Answer»

Options a is correct EXPLANATION:We stand front of the MIRROR so we GET same

7124.

12) The following diagram (Fig 4.21) shows an incident ray AO and the normal ON on a planemirror. Find the angle of incidence and angle ofreflection,​

Answer» ANGLE of incidence=60                        angle of reflection=60 EXPLANATION:THANKS
7125.

A donkey carrying load on his back .which energy does he use and how?​

Answer» MUSCULAR ENERGY by CARRYING LOAD
7126.

Explain the types of fractions with suitable examples​

Answer»

s, there are THREE MAJOR types of fractions. They are PROPER fractions, improper fractions and mixed fractions. Fractions are those terms which have numerator and denominator. And based on these TWO terms we define its types.Explanation:please mark me brainlist✌️✌️

7127.

18) You are standing at a distance 2 metre from a plane mirror a. what is the distance of your image from the mirror ?b. what is the distance between you and your image?​

Answer» TION:सफलता कठिन परिश्रम हैसफलता कठिन परिश्रम है
7128.

Good morning friends.....please tell me about Rabindra nath Tagore​

Answer»

Rabrindanath TAGORE was a poet who wrote POEMS and even stories mainly in Bengali. He even composed the NATIONAL ANTHEM of India JANA Gana mana. He was also a noble prize winnerExplanation:Hope this helps

7129.

Explain why is Compton effect experimenteny not observed for visible light rays.​

Answer»

There are two reasons we don't see the Compton effect with visible LIGHT. FIRST, the effect is too SMALL. When light (x-rays or other) SCATTERS off a free ELECTRON, the wavelength is shifted by at most = 0.005 nm. That's measurable if the starting wavelength is 0.050 nm (25 keV x-rays).

7130.

What is different between magnent and magnetic ​

Answer»

Explanation:DIFFERENCE between Permanent Magnet and Electromagnet is magnetic FIELD and STRENGTH. ... Difference between Permanent Magnet and Electromagnet. Permanent (Bar) Magnet Electromagnet They are permanently MAGNETIZED. These are TEMPORARILY magnetized.

7131.

वस्तु विनिमय क्या है? a.पैसे के बदले वस्तु खरीदनाb.बाजार से वस्तु लानाc.वस्तु को सीधे बाजार से खरीदनाd.वस्तु के बदले वस्तु लेना​

Answer»

a.pese KE besele VESTU keridena

7132.

What is an auxanometer or are indicator used to measure_________fill in the blankss​

Answer»

nometer (Gr. auxain= "to grow" + metron= "measure") is an apparatus for measuring increase of GROWTH in plants. In case of an arc-auxanometer (see PICTURE), there is a wire FIXED with the plant apex on one END and a dead-weight on the other. It passes over a pulley which has a pointer attached to it.

7133.

A block of mass 4kg is suspended through two light spring balances A and B. Then A and B will read respectively​

Answer»

ANSWERThe correct option is CWe have,mass=4kgSo, Both the spring balance will give the same READING of 4kgLet tension in the LOWER spring is T 1 CONSIDERING the equlibrium of the block T 1 =4g(reading)T 1 =4kgLet tension in the UPPER spring is T 2 Considering the equilibrium of the lower spring.T 2 will act into the upward direction and T 1 in the downward directionT 2 −T 1 =0T 2 −T 1 =4g (reading)6T 2 =4kgHope its helpful to u

7134.

what hagshvs ha s hs sha a is the meaning of hahaha ke ke ka ka ke ko ki ke ko ke ki ko ke ka ki ko aur ko aur ko​

Answer» KYA BHAI FULL TIME PASS
7135.

Mechanism of hand wash bottle.​

Answer»

it works on the pricipal of SUCTION where in a SPRING force is USED to do so whem the barrier is PUSHED the spring uses its force to sock the inside SOLUTION hope it helped

7136.

What is the first step in Pashmina shawl wool making process ​

Answer»

Here is the first STEP of the PASHMINA making and the procedure starts with SPINNING of the fleece into finest yarn traditionally for centuries in the capital of Kashmir called Srinagar. Gluing process is ONE of the important process before the PASHMINA strings are taken onto hand loom for weaving.please thanks my answer

7137.

suppose a string is stretched in vacuum. will it vibrate if we pull it? will you be able to listen the sound produced by it? explain

Answer»

Sounds are MADE by VIBRATIONS. Some vibrations are easy to see.In this case, a stick is STRUCK against a frying pan in vacuum. The frying pan vibrates. But this happens in vacuum. Sound WAVES require a medium to travel through. Outer space is a vacuum, and therefore it is not heard.Hence, the sound CREATED by the stick and frying pan is not heard.

7138.

A stone is thrown vertically upward with a height 80 m with what speed it thrown​

Answer»

u =28 m/sa) When MAXIMUM height reached, velocity =0conserving total energy,21m×282=21m×D2+mgh→h=2×0.8282=40 mb) One second after u reaches maximum height t=1 SEC.V=u+at=0+9.8×1=9.8 m/sc) No, because at maximum height, velocity is zero so 1 sec after in any CASE, will given velocity 9.8×1=9.8 m/s.

7139.

A motorboat can exert a force of 800 N and the stream is flowing with a force of 200 N. Calculate the resultant force ( in N) on the boat in upstream. (Hint: upstream means the boat is moving in the opposite direction to the stream)

Answer» 600 N......EXPLANATION:MARK as BRAINLIEST.......
7140.

The density of a liquid is 1150 kilogram per metre cube what is its relative density​

Answer» RELATIVE density, or specific gravity, is the ratio of the density (MASS of a unit volume) of a SUBSTANCE to the density of a water. So, Relativedensity=DensityofwaterDensityofsubstance⇒1000kgm−37100kgm−3=7.1
7141.

Functions of golgi bodies..don't spam ​

Answer»

tion:Golgi BodyA Golgi body, also KNOWN as a Golgi apparatus, is a cell ORGANELLE that HELPS process and package proteins and lipid molecules, ESPECIALLY proteins DESTINED to be exported from the cell.xXitzSweetMelodyXx

7142.

ball weighing 10 grams is thrown vertically upwards with a speed of 10 metre per second what will be its Momentum at the highest point​

Answer» HOPE you have FIND your ANSWER
7143.

WHAT IS GRAVITATION ? EXPLAIN. I GIVES 50 POINTS FOR EACH ANS. TO GET 50 POINTS BY GIVING THE ANSWERS FOLLOW ME..​

Answer»

sible force that PULLS objects towards each other . For example = EARTH's gravity is what keeps you on the GROUND and what makes THINGS FALL .

7144.

What is a neutralization ​

Answer»

tion:A NEUTRALIZATION reaction is when an acid and a base react to form water and salt and involves the COMBINATION of hydrogen ions and hydroxyl ions to generate water. The neutralization of a strong acid and strong base has a pH equal to 7. Example – 1: When Sodium HYDROXIDE is added to HYDROCHLORIC acid.

7145.

Photons have properties similar to that of (a) Both particles and waves(b) Particles(c) Waves(d) Neither particles nor waves​

Answer»

A) both WAVE and PARTICLES

7146.

Some mammals eggs name​

Answer»

this is to EASY – Peesy PAWNS EGGS are some NAME of MAMMALS eggs

7147.

Magnification (m) provided by a convex mirror can be -1zero+1+0.5​

Answer» TERI had nazm EXPLANATION:
7148.

A ball is thrown upward with a speed of 50m/s and it come back in what time​

Answer» R:...........EXPLANATION:.........................
7149.

What is reverse osmosis process?​

Answer» OSMOSIS Process:In reverse osmosis method, WATER molecules are FORCED through a semi-permable MEMBRANE. The salt molecules can not pass through the membrane and are left behind. So the fresh water passes through the membrane.
7150.

What will be pressure when 40 N force isapplied on 1 cm2 area?​

Answer»

pressure is 4 * 10 ^ 5.Explanation:1 cm = 1/100 m 1 cm square = 1/10000Pressure = FORCE / AREA ( N / M ^ 2).pressure = 40 N / ( 1/10000).pressure = 400000 N / M ^ 2. Pressure = 4 * 10 ^ 5. PASCAL.