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Newton’s second law- For a body whose massmis constant, it can be written in the formF=ma, whereF(force) anda(acceleration) are both vector quantities.

Newton's third law:If an object A exerts a force on object B, then object B must exert a force of equal magnitude and opposite direction back on object A.

the correct answer is 5:9

Ans :- Linearmotion(also called rectilinear motion) is a one-dimensionalmotion along a straight line, and can therefore be described mathematically using only one spatial dimension. In generalmotion, a particle's position and velocity are described by vectors, which have a magnitude and direction.

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In circulationmotion body has constant speed butdonot have constant velocity. According to the formulavelocityis the distance covered by time.Andwhen particle is moving in a circle its direction changes continuously atconstant rate

8.4m/sec² is your answers

(a) is the correct one

a is the correct answer

explain in video

explain mee

Moment of inertia is the name given torotationalinertia, therotational analog of massfor linear motion.

galvanometer can detect only small currents. Thus, to measure large currents it is converted into an ammeter. It can be converted into an ammeter by connecting a low resistance called shunt resistance in parallel to the galvanometer.

Let G be the resistance of the galvanometer and Ig be the current for full scale deflection in the galvanometer, the value of the shunt resistance required to convert the galvanometer into an ammeter of 0 to I ampere is,

S=Ig×GI−Ig

Ig is calculated using the equation, Ig = nk, where n is the number of divisions on the galvanometer and k is the figure of merit of galvanometer.

Moment of inertia is the name given torotationalinertia, therotational analog of massforlinear motion. It appears in the relationships for the dynamics ofrotational motion. The moment of inertia must be specified with respect to a chosen axis ofrotation.

In physics, buoyancy or upthrust, is an upward force exerted by a fluid that opposes the weight of an immersed object. In a column of fluid, pressure increases with depth as a result of the weight of the overlying fluid. Thus the pressure at the bottom of a column of fluid is greater than at the top of the column.

Ans :- 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. Solar cells are described as being photovoltaic, irrespective of whether the source is sunlight or an artificial light.

Acceleration a = -6 m/s^2Time t = 2 sFinal velocity v = 0 m/s

Let initial velocity be uLet distance be s

v = u + atSo, 0 = u + (-6)(2)So, u = 12 m/s

Now, s = ut + (1/2) at^2So, s = 12(2) + (1/2)(-6)(2^2)So, s = 24 - 12So, s = 12 m

Thus, distance travelled is 12 m

Ans :- The first generation cells—also called conventional, traditional or wafer-based cells—are made ofcrystalline silicon, the commercially predominant PV technology, that includes materials such as polysilicon andmonocrystalline silicon.

When a force is applied on a rigid body which is free to move, the body starts moving in a straight line in the direction of the force. ... A single force can produce translational motion of a body if it is free to move, but a single force applied on a body fixed at a point does not cause rotational motion of the body.

Given v = 0u= 90km/h = 25m/sa=-0.5m/s^2s=?

v^2-u^2=2ass=v^2-u^2/2as=0^2-25^2/2×-0.5s=0-625/2×-0.5s=-625/-1s= 625m Ans) The train will need a distance of 625m to stop.

Distance= average velocity ×time s =( v+u/2)t s= (u+at+u/2)t s= 2u+at×t/2 s= 2u+at^2/2 s= ut+at^2/2 s= ut+1/2at^2

Acceleration a = -6 m/s^2Time t = 2 sFinal velocity v = 0 m/s

Let initial velocity be uLet distance be s

v = u + atSo, 0 = u + (-6)(2)So, u = 12 m/s

Now, s = ut + (1/2) at^2So, s = 12(2) + (1/2)(-6)(2^2)So, s = 24 - 12So, s = 12 m

Thus, distance travelled is 12 m

Hygrometers areinstruments used for measuring humidity. A simple form of a hygrometer is specifically known as a "psychrometer" and consists of two thermometers, one of which includes a dry bulb andtheother of which includes a bulb that is kept wetto measurewet-bulb temperature.

hiii........ .............

hygrometers is used for the measureing humidity

hygrometer is used to measure humidity

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Here,S=u+(1/2)*a*(2n-1) this equation is used to find distance travelled by body in nth second.

LHS

So,S(nth) = distance travelled in nth second

i.e S(nth) = [L]/[T] = [LT^-1] dimensionally

RHS

Now,U+(1/2)*a*(2n-1) = where,

U= initial velocity = [LT^-1]

a= acceleration = [LT^-2]

2n-1= n=time = [T]

1/2=dimensionless = [M°L°T°]

——————————————————

U+(1/2)*a*(2n-1)= [LT^-1]+[LT^-2]*[T]

[LT^-1]+[LT-^1]=[LT^-1] by principle of homogeneity.

As LHS= RHS dimensionally i.e [LT^-1]

Therefore, it is dimensionally correct.

option (c) is correct.

but how can say that this equation will be numerically correct

v= final velocity = [LT-¹]u= initial velocity=[LT-¹]a= acceleration =[LT-²]s= distance= [L]v²=u²+ 2as=>v²-u²=2as[LT-¹]²-[LT-¹]²=2[LT-²][L][L²T-²][L²T-²]=2[L²T-²]2[L²T-²]=2[L²T-²]2 is dimensionlesshence proved

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v= final velocity = [LT-¹]u= initial velocity=[LT-¹]a= acceleration =[LT-²]s= distance= [L]v²=u²+ 2as=>v²-u²=2as[LT-¹]²-[LT-¹]²=2[LT-²][L][L²T-²][L²T-²]=2[L²T-²]2[L²T-²]=2[L²T-²]2 is dimensionlesshence proved

v= final velocity = [LT-¹]u= initial velocity=[LT-¹]a= acceleration =[LT-²]s= distance= [L]v²=u²+ 2as=>v²-u²=2as[LT-¹]²-[LT-¹]²=2[LT-²][L][L²T-²][L²T-²]=2[L²T-²]2[L²T-²]=2[L²T-²]2 is dimensionlesshence proved

F= qvB charge on protons = 1.602×10−19B= 2500 N/A-mvelocity= 4*10^5then F = 1.602*4*2500*10^-14= 1.6*10^-10 N

This is a similar question. Kindly follow the methodology.

yeah but how to solve it

but the answer is 60

i have uploaded solution to a similar question. kindly solve your question accordingly.

The complete assemble of plants and animals is called ecosystem

the complete assemble of plants and animal is called ecosystem.

TheInternational System of Units(SI, abbreviated from theFrench is the modern form of themetric system, and is the most widely usedsystem of measurement. It comprises acoherentsystem ofunits of measurementbuilt on sevenbase unitsthat areampere,kelvin,second,metre,kilogram,candela,mole

The SI system is important in science and technology because it provides a consistent and coherent system of units for all physical quantities, derived from a few base units.This means that you do not need to use any sort of conversion factor between different units;. This becomes especially important in fields like thermodynamics where you often need fairly complex compound units like watts per kelvin per square metre.

The mass of an electron is 9.1 * 10^-31 kg

Therefore number of electrons in 1kg = 1/(9.1 * 10^-31) electrons = 1.09 * 10^30 electron

Number of particles in 1 mole =6.023 * 10^23 (Avagadro’s constant)

So ,

Number of moles = number of electrons/ Avagadro’s constant = (1.09 * 10^30)/(6.023 * 10^23) = 1.8 * 10^6 electrons

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Option (D) is correct.

a. 1ohmis the unit of resistance . It is equal to 1 volt upon 1 ampere. It means that an object having a resistance of1ohmallows 1 ampere of current to flow through 2 points having potential difference of 1 volt.

b. The watt (symbol: W) is a unit of power. In the International System of Units (SI) it isdefinedas a derived unit of 1 joule per second, and is used to quantify the rate of energy transfer.

c. 1 ampereisdefinedas the constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed 1 metre apart in vacuum, would produce between these conductors a force equal to 2 10 to the power -7 newton per metre of length.

d.One volt isdefinedas energy consumption of one joule per electric charge of one coulomb. 1V = 1J/C. One volt is equal to current of 1 amp times resistance of 1 ohm. 1V = 1A * 1Ω

Air, The normal mixture of gases that theairconsists of. If youfilledit using your mouth then itwillhave lesser oxygen andmorecarbon di oxide and water vapor and normal products of exhalation. If you used a pump then itwillbe same as surroundingair.

∫ [(1 /log x) - (1 /log²x)] dx =

let:

log x = t

x = e^t

dx = e^t dt

then, substituting:

∫ [(1 /log x) - (1 /log²x)] dx = ∫ [(1 /t) - (1 /t²)] e^t dt =

∫ [(t - 1) /t²] e^t dt =

rewrite this as:

∫ [(t - 1) e^t] t^(- 2) dt =

integrate by parts, letting:

(t - 1) e^t = u → [(1) e^t + e^t (t - 1)] dt = (e^t + t e^t - e^t) dt = t e^t dt = du

t^(- 2) dt = dv → [1/(- 2+1)] t^(- 2+1) = [1/(- 1)] t^(- 1) = - 1 /t = v

yielding:

∫ u dv = v u - ∫ v du

∫ [(t - 1) e^t] t^(- 2) dt = (- 1 /t) (t - 1) e^t - ∫ (- 1 /t) t e^t dt =

- [(t - 1) /t] e^t + ∫ e^t dt =

[(1 - t) /t] e^t + e^t + C =

(factoring out e^t)

{[(1 - t) /t] + 1} e^t + C =

[(1 - t + t) /t] e^t + C =

(1 /t) e^t + C =

[(e^t) /t] + C

let's substitute back log x for t:

[e^(log x)] /log x] + C =

(being e^log x, a composition of inverses functions, the same as x)

(x /log x) + C

the answer is:

∫ [(1 /log x) - (1 /log²x)] dx = (x /log x) + C

People living in coastal areas get sea breeze during the day.

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