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55+273.15 = 328.15 K

T(°C) = (100°F - 32) × 5/9 = 68*5/9 = 37.77 °C

T(K) = (100°F + 459.67)× 5/9 = 559.67*5/9 = 310.92 K

hope it helps u

A solar cell, or photovoltaic cell, is an electrical device that converts the energy of light directly into electricity by the photovoltaic effect, which is a physical and chemical phenomenon.

Accuracy refers to the closeness of a measured value to a standard or known value. For example, if in lab you obtain a weight measurement of 3.2 kg for a given substance, but the actual or known weight is 10 kg, then your measurement is not accurate. In this case, your measurement is not close to the known value.

Precision refers to the closeness of two or more measurements to each other. Using the example above, if you weigh a given substance five times, and get 3.2 kg each time, then your measurement is very precise. Precision is independent of accuracy. You can be very precise but inaccurate, as described above. You can also be accurate but imprecise.

For example, if on average, your measurements for a given substance are close to the known value, but the measurements are far from each other, then you have accuracy without precision.

Corrosion is a natural process, which converts a refined metal to a more chemically-stable form, such as its oxide, hydroxide, or sulfide. It is the gradual destruction of materials (usually metals) by chemical and/or electrochemical reaction with their environment.

OR

A corrosive substance is one that will damage or destroy other substances with which it comes into contact by means of a chemical reaction.

thanxsss

The process of transferring the immediate discharge of the electrical energy directly to the earth by the help of the low resistance wire is known as the electrical earthing.

Thegravity of Earth, denoted byg, is thenet accelerationthat is imparted to objects due to the combined effect ofgravitation(from distribution of mass withinEarth) and thecentrifugal force(from theEarth's rotation).

InSI unitsthis acceleration is measured inmetres per second squared(in symbols,m/s2or m·s−2) or equivalently innewtonsperkilogram(N/kg or N·kg−1).

Near Earth's surface,gravitational accelerationis approximately 9.8m/s2, which means that, ignoring the effects ofair resistance, thespeedof an objectfalling freelywill increase by about 9.8 metres per second every second. This quantity is sometimes referred to informally aslittleg(in contrast, thegravitational constantGis referred to asbigG).

Ans :- Ultrasound is used in many different fields. Ultrasonic devices are used to detect objects and measure distances. Ultrasoundimagingor sonography is often used in medicine. In the nondestructivetesting of products and structures, ultrasound is used to detect invisible flaws.

30 degrees Celsius are equal to 86 degrees Fahrenheit:

30ºC = 86ºF

CalculationThe temperature T in degrees Fahrenheit (ºF) is equal to 30 degrees Celsius (ºC) times 9/5 plus 32:

T(ºF) = 30ºC × 9/5 + 32 = 86ºF

86 F is the answer for 30 C

The following are thefactorsthataffect the value of g: ... (ii) Altitude: As the height (h) above the earth's surface increases, thevalue of gdecreases. It varies by avalueof , where R is radius of the Earth.

An inertial frame of reference is a reference frame in which an object stays either at rest or at a constant velocity unless another force acts upon it. When a body does not seem to be acting in accordance with inertia, it is in a non-inertial frame of reference or accelerating.

So, for any practical purposes the reference of earth is rest(because we are working from earth frame). earth is non inertial if work frame from outside.

thanku

1) Inertial mass. This is mainly defined by Newton's law, the all-too-famous F = ma, which states that when a force F is applied to an object, it will accelerate proportionally, and that constant of proportion is the mass of that object. In very concrete terms, to determine the inertial mass, you apply a force of F Newtons to an object, measure the acceleration in m/s^2, and F/a will give you the inertial mass m in kilograms.

2) Gravitational mass. This is defined by the force of gravitation, which states that there is a gravitational force between any pair of objects, which is given by

F = G m1m2/r^2

Basic conversion formula: F = 9/5C + 32Our problem: 2C = F

Substitute F in the first formula with 2C from the second, which gives you:2C = 9/5C + 32

Subtract 9/5C from both sides, which gives:2C - 9/5C = 32

Simplify the left side (2C = 10/5C): 10/5C - 9/5C = 32, which equals 1/5C = 32

Multiply 5 to each side, which leaves C = 160

So, 160 degrees Celsius will equal 320 degrees Fahrenheit.

initial position

We need to specify the initial position.

no initial posotion is wrong answer......

The correct answer is ORIGIN.

reference point

To describe the position of an object we need to specify a reference point

origin ............is rightlike me

350*60/100=x * 15=> 35*6=x*15=> x = 35*6/15=> x = 14

Aninertial frame of referenceinclassical physicsandspecial relativityis aframe of referencein which abodywith zeronet forceacting upon it is not accelerating; that is, such a body is at rest or it is moving at a constant speed in a straight line.Inanalyticalterms, it is a frame of reference that describes time and spacehomogeneously,isotropically, and in a time-independent manner.Conceptually, the physics of a system in an inertial frame have no causes external to the system.An inertial frame of reference may also be called aninertial reference frame,inertial frame,Galilean reference frame, orinertial space.

a basi or standard of evaluation

A basis or standard for evaluation assessment or comparison ; a criterion

a basis or standard for evaluation, assessment, or comparison; a criterion.

a basis or standard for evaluation, assessment, or comparison; a criterion

A point which we compared

Reference point is any place or point or coordinate which you take as standard with respect to which you will standardize other phenomena relatively. Suppose you want to measure distance of a coffee shop and a cyber cafe from your house and you start measuring from your house. Then your house is the reference point. Similarly if you start measuring distance from cyber cafe to your house and to the coffee shop then cyber cafe becomes reference point.

Aholeis the absence of an electron in a particular place in an atom. Although it is not a physical particle in the same sense as an electron, aholecan be passed from atom to atom in asemiconductormaterial.

A place vacated by an electron is called a hole

factories : ax + bx + by

1/r1=(1/3+1/3)=2/3r1=3/21/r2=(1/9+1/3)=(4/9)r2=9/4R=r1+r2 =(3/2+9/4) =(6+9)/4 R =15/4i=V/R =4.5/(15/4) =(4.5×4)/15 =18/15 =1.2 ampere ans.

The formal definition of the ampere is that it is the constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed one metre apart in vacuum, would produce between those conductors a force equal to 2 x 10-7newtons per metre of length.

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Unit of Resistance= Volt/ampereUnit of Inductance= Volt-sec/ ampere

Above marching are provided in Option b. Hence, B is the correct answer

option 1st is correct

For first 10 sec distance s1 = 1/2 at^2 1/2×2×10×10 = 100mAnd velocity reached= v =u+atv= 0+2×10 = 20m/sFor next 30ss2= 20× 30 = 600m Then under retardation of 4m/s^2v^2 = 2as320× 20 = 2×4×s3S3 = 50m Total s1+ s2+ s3 100+600+50 = 750m

thank you

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dx/dt will be velocity =2+6tat 2 sec2+6*2=2+12=14m/d

X=2t+3t^2=dx/dt(2t+3t^2)=2+6tv at 2sec=2+6*2=14

option 2

equate last equation..

the equation 5y-4x is the needed equation and option 2 states the same. So that is the answer.

thnx

1 dioptre of power of a lens is defined, as the power of a lens of focal length 1 m.

Specific resistanceisdefinedas “ the resistanceoffered perunitlength andunit cross sectional area of that material when a known quantity of voltage is applied atitsend” That's whySI UNITOFSPECIFIC RESISTANCEIS Ohm-m.

1 dioptre is SI unit of the power of a lens whose focal length is 1 metre. It is denoted by the letter D. Thus 1D = 1 m-1. Simply, when focal length ‘ f ‘ is expressed in metres, then, power is expressed in dioptres. The power of a convex lens is positive and that of a concave lens is negative.

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