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What does the acronym IUCN stand for?

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Important Questions on Work, Energy and Power

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Physics>Mechanics>Work, Energy and Power>Kinetic Energy

The correct IUPAC name of the following compound

Question Image
is :

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Physics>Mechanics>Work, Energy and Power>Kinetic Energy

A mass

M

attached to a horizontal spring executes

S . H . M .

of amplitude

A_{1}

. When the mass

M

passes through its mean position, then a smaller mass

m

is placed over it and both of them move together with amplitude

A_{2}

. The ratio of

(\frac{A_{1}}{A_{2}})

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Physics>Mechanics>Work, Energy and Power>Kinetic Energy

Select the correctly written scientific name of mango, which was first described by Carolus Linnaeus.

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Physics>Mechanics>Work, Energy and Power>Kinetic Energy

A body of mass

M

moving with velocity

v

explodes into two equal parts. If one part comes to rest and the other part moves with velocity

v_{0}

; what would be the value of

v_{0}

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Physics>Mechanics>Work, Energy and Power>Kinetic Energy

Which is the National Aquatic Animal of India?

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Physics>Mechanics>Work, Energy and Power>Kinetic Energy

Two bodies

A

and

B

have masses

20 k g a n d 5 kg

respectively. Each one is acted upon by a force of

4 kgf

. If they acquire the same kinetic energy in time

t_{A}

and

t_{B}

respectively. Then the ratio of

\frac{t_{A}}{t_{B}}

is
(Assume

g = 10 m s^{- 2}

)

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Physics>Mechanics>Work, Energy and Power>Kinetic Energy

A bullet fired from a gun with a velocity of

10^{4} m s^{- 1}

goes through a bag full of straw. If the bullet loses half of its kinetic energy in the bag, its velocity when it comes out of the bag will be

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Physics>Mechanics>Work, Energy and Power>Kinetic Energy

Which of the following statements is incorrect?

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Physics>Mechanics>Work, Energy and Power>Kinetic Energy

Two particles of masses

1 g

and

2 g

have equal momentum. What is the ratio between their kinetic energies?

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Physics>Mechanics>Work, Energy and Power>Kinetic Energy

When mass and speed are doubled the

K . E .

increases

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Physics>Mechanics>Work, Energy and Power>Kinetic Energy

Best relationship between momentum and kinetic energy possessed by an object in terms of mass is

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Physics>Mechanics>Work, Energy and Power>Kinetic Energy

A light and heavy body have equal kinetic energy. Which has greater momentum?

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Physics>Mechanics>Work, Energy and Power>Kinetic Energy

A running man has half the kinetic energy of a boy. Mass of man is double the mass of the boy. The man speeds up by

1.0 m s^{- 1}

and then he has same energy as the boy. The original speeds of the man and boy respectively are

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Physics>Mechanics>Work, Energy and Power>Kinetic Energy

If a man speeds up by

1 m s^{- 1}

, his KE increase by

44 %

. His original speed in

m s^{- 1}

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Physics>Mechanics>Work, Energy and Power>Kinetic Energy

A body of mass

4 kg

is moving with momentum of

8 kg m s^{- 1}

. A force of

0.2 N

acts on it in the direction of motion of the body for

10 s

. The increase in kinetic energy is

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Physics>Mechanics>Work, Energy and Power>Kinetic Energy

Given

E = \frac{1}{2} m v^{2}

, which one of the options is wrong?

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Physics>Mechanics>Work, Energy and Power>Kinetic Energy

A truck and a car are moving with same kinetic energy. Both are brought to rest by applying the same retarding force.

S_{1}

is the distance travelled by truck before coming to rest and

S_{2}

is the distance travelled by the car before coming to rest.

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Physics>Mechanics>Work, Energy and Power>Kinetic Energy

The kinetic energy

K

of a particle moving in straight line depends upon the distance

s

as :

K = a s^{2}

The force acting on the particle is

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Physics>Mechanics>Work, Energy and Power>Kinetic Energy

A bus and car have the same momentum. If kinetic energy of the bus is

k_{1}

and kinetic energy of the car is

k_{2}

, then

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Physics>Mechanics>Work, Energy and Power>Kinetic Energy

When an ideal gas is compressed adiabatically, temperature rises and the molecules on the average have more kinetic energy than before. The kinetic energy increases

What does the acronym IUCN stand for?

Important Questions on Work, Energy and Power

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