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given the net acceleration is 2m/s².

so, force equation for left is

=> T2 = m*a = T2 = 1.2 = 2N

option 3 is the correct answer

option 3 is correct answer

option 3 is the right answer

3 part is right answer

option 3 is the correct answer of the given question

The motion in the vertical circle involves the concepts of centripetal force ,conservation of energy and the kinetic energy. its all about the constraint that is in simple words a system of parameters that the system must obey. eg. a stone sliding down through mountain. so motion in a vertical circle means that constraint of motion in a vertical circle must be equal to the centripetal of remained circle and when the mass moved down it must be satisfied with the demands of conservation of energy as gravitational potential energy when converted to kinetic energy .

Velocity and tension in string when body moves in Vertical Circle.

Energy at Point P = Energy at Point L

1/2 m v sq. + m g h =1/2 m u sq.

Hence v sq. + 2gh = u sq.

Hence v sq. = u sq. - 2gh

Hence v = underroot u sq. - 2gh ...............................( 1 )

Hey Mate..

Consider the centripetal force at Point T

T - mg Cos0 = mv sq. / r ......... ( 2 )

Hence mg Cos0 + mv sq. / r

Cos0 = ( r - h ) / r

Subsituting in eq ( 2 )

T = mg ( r - h ) / r + mv sq. / r

Hence T = m / r ( g ( r - h ) + v sq. )

But v sq. = u sq. - 2 gh

T = m / r ( gr - gh + u sq. - 2 gh )

T = m / r ( u sq. - 3 gh + gr )

1)The SIunitfor measuring anelectric currentis the ampere, which is the flow ofelectriccharge across a surface at the rate of one coulomb per second.2)from positive terminal to negative terminal3)current is a scalar quantity

1.The electrical resistance of an object is a measure of its opposition to the flow of electric current2.An electric current is a flow of electric charge. In electric circuits this charge is often carried by moving electrons in a wire.3.Voltage, electric potential difference, electric pressure or electric tension is the difference in electric potential between two points4.Electric power is the rate, per unit time, at which electrical energy is transferred by an electric circuit

The answer is dilate.

Reason :

The rod repels negative charge from the top of the electroscope.

This creates an excess of negative charge at the leaves.

The leaves having the same charge, are repelled, and spread.

the answer is dilate because the rod repels negative charge from the top of the electroscope

djdjulS slaps elysians ska all cd LDL isliye is all of aap

electroscope is an early invention of instrument used to detect the flow of electrical charge.

The electroscope was the first electrical measuring instrument

thanks yrr

Volume of water displace=2×1×3/100=6/100=•06m^3mass of man =volume of water displace ×density of waterM.=•06×1000=60kgmass of man=60kg

thanks

Use F. S =w............

18joule.

in 40 second he completes one circular path..so in 2 minutes 20 seconds he will complete 5 complete revolution and half revolutionso displacement=2r

thanks

acceleration=change in velocity/time =8-(-8)/πr/8 =16*8/6π 64/3π

what is your question

average speed = 1000/125 = 8 m/s

.

we will use conservation of linear momentum

initial momentum of the system is =mass of girl × velocity = 40× 5 = 200kg-m/s

and when she will jump the net mass of the system will be 40+3 = 43 kg

and both will have same final Velocity V

so, final momentum will be 43*(V)

now mi = mf => 200 = 43v => v = 200/43 = 4.65 m/s

No external force => momentum is constant.

momentum of girl = 40 * 5 = 200 kg-m/sec momentum of girl and cart = total momentum of the girl + momentum of cart = 200 + 0 = 200 kg m/sec speed = 200 / (40 + 3) = 4.65 m/sec

no external force => momentum is constant.

momentum of girl = 40 * 5 = 200 kg-m/sec momentum of girl and cart = total momentum of the girl + momentum of cart = 200 + 0 = 200 kg m/sec speed = 200 / (40 + 3) = 4.65 m/sec

tq

When a net zero external unbalanced force is applied on the body, it is possible for the object to be travelling with a non-zero velocity. In fact, once an object comes into motion and there is a condition in which its motion is unopposed by any external force; the object will continue to remain in motion. It is necessary that the object moves at a constant velocity and in a particular direction.

Newton's Second law of motion :- The rate of change of momentum is directly proportional to the force applied on the system.Force applied is directly proportional to the product of mass and acceleration .Let be the initial and final momentums respectively.According to newton's second law :-pf - pi / t ∝ FWe know that,Momentum ( P) = mv .Let v be the final and u be the initial velocity .Now,mv - mu / t ∝ FF ∝ m ( v-u) /tF ∝ ma.F = kma.Here, K is the proportionality constant. It's value is 1 .Units of Force are given by the units of mass and acceleration. Units of force is Kgm/s² .In accordance to honour the contributions of Newton, 1 kgm/s² is termed as 1 Newton.

A bulb is filled with an inert gas such as argon ornitrogen slows down the evaporation of the tungsten filament compared to operating it in a vacuum. This allows for greater temperature and therefore results in greater efficiency of filament life.

Inert gases reduce the rate of evaporation rate of tungsten metal used in Filament of bulbs. Thus it increases the efficiency of bulbs. N2 gas is an inert gas. That's why the bulbs are filled with nitrogen.

CFLs are up to four times more efficient than incandescent bulbs. You can replace a 100-watt incandescent bulb with a 22-watt CFL and get the same amount of light.

While initially theycostmore, CFLs are less expensive in the long run because they last much longer than incandescent bulbs.

here we shall use the first law of thermodynamics

ΔQ = ΔU + ΔW

so, change in internal energy will be

ΔU = ΔQ -ΔW

here,

ΔQ = mL =1g x 540Cal/g = 540 Cal

ΔU = change in internal energy (to be calculated)

ΔW = change in work done

so,

ΔW = pΔV

where

ΔV = 1671cm3- 1cm3= 1670cm3= 1670 x 10-6m3

p = hρg = 0.76 x 13600 x 9.8 ~ 101293 N/m2

so,

ΔW = 101293 x 1670x10-6= 169.16J

or

ΔW = 169.16 / 4.2 = 40.3 Cal

thus, we have

ΔU = 540 Cal - 40.3 Cal

so,

ΔU = 499.7 Cal = 2098.74 J

Absolute pressure is the pressure measured with absolute zero taken as a reference. Hence, a perfect vacuum, called absolute zero, is the datum. Gauge pressure is the pressure measured with atmospheric pressure taken as its datum.

Absolute pressureis zero-referenced against a perfect vacuum, so it is equal to gaugepressureplus atmosphericpressure. Gaugepressureis zero-referenced against ambient airpressure, so it is equal toabsolute pressureminus atmosphericpressure. Negative signs are usually omitted.

find ideal sources

D find ideal sources

Efficiency of a carnot engine is given by

η = 1 - Q2/Q1

In order to achieve 100% efficiency (η=1), Q2 must be equal to 0 which means that all the heat form the source is converted to work.

The temperature of sink means a negative temperature on the absolute scale at which the temperature is greater than unity. This would be violation of second law of thermodynamics. Hence negative temperature of absolute scale is impossible and we cannot reach absolute 0 temperature.

The correct option is C.

Ans :- Absolute pressureis zero-referenced against a perfect vacuum, so it is equal to gaugepressureplus atmospheric pressure. Gaugepressureis zero-referenced against ambient airpressure, so it is equal toabsolute pressureminus atmosphericpressure.

Atmospheric pressure is the force that the weight of air exerts on a surface. It is usually estimated through hydrostatic pressure, which is produced by the total weight of air above the spot to be measured. This type of pressure can be applied in many industrial processes, including corrosion protection.

Gauge pressure is zero-referenced against ambient air pressure, so it is equal to absolute pressure minus atmospheric pressure. ... Gauge pressure is measured with the standard atmospheric pressure as the baseline.

displacement after 2m 20s is 20meter