Question # 1

Gravitational force is a:

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Electric force

Magnetic force

Reactional force

Electromotive force.

Which is not an example of torque?

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Opening a nut

Door opening

Picking up a toy

All of them

Motion of butterfly is an example of.

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Random

Circular motion

Linear motion

Vibratory motion

When a horse pulls a cart , the action is on the :

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Cart

Earth

Man

Earth & cart

In symbols, Newton's second law of motion is stated as

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F = m/a

F = ma

F = a/m

F = ma²

Centripetal force always acts _________ to the motion:

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Opposite

Parallel

Perpendicular

Upward

Torque is a ___________ quantity.

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Vector

Scalar

Base

All of these

The conduction is due to:

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They have high boiling point

Vibration of atoms

They have high melting point

None of above

Normal human body temperature is:

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15 ^oC

37^oC

37^oF

98,6 ^oC

Anything that rotates around a planet is called:

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Star

Sun

Moon

Satellite

The centripetal acceleration is always along.

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Normal force

Centripetal forces

Mass

Horizental forces

In Einstein's mass-energy equation c means speed of light. Its value is:

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3 x 10^-8 ms^-1

3 x 10⁸ms^-1

3 x 10⁹ms^-1

3 x 10¹⁸ms^-1

What should be approximate length of a glass tube to construct of water barometer?

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0.5 m

1 m

2.5 m

11 m

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