Estimate the total number of air molecules (inclusive of oxygen, nitrogen, water vapour and other constituents) in a room of capacity 25.0 m3 at a temperature of 27 °C and 1 atm pressure.

Q: Pick the best answer for the following: tension force _____________. 1pulls along a rope. 2pulls...

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Q: A pendulum clock is in an elevator that descends in a free fall. Does it keep the correct time?

A: In free fall motion , the pendulum bob has the same downward acceleration as that of the pendulum su...

Q: If you push on a crate with a force of 100 N and it slides at constant velocity, how much is the fri...

A:  Given:Pushing force, F = 100 NSince, the crate is moving with constant velocity. Therefore, accordi...

Q: A body of mass 1kg is made to oscillate in turn on two springs , one of force constant 1N/m and anot...

A: The equivalent value of spring constant is,

Q: A string of mass 2.50 kg is under a tension of 200 N. The length of the stretched string is 20.0 m. ...

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Q: Choose the BEST answer to the following: The model of light supported by the photoelectric effect is...

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Q: Earth, like everything else illuminated by the Sun, casts a shadow. Why does this shadow taper?

A: Answer: The sun is much larger than the earth.

Q: What is elasctic moduli and Young's Modulus?

A: Elastic modulus:When a stress is applied to object or substances it goes to deformed elastically, th...

Q: Choose the BEST answer to the following: Your friend states that under all conditions, any radio wav...

A: Radio wave is an electromagnetic wave with low frequency and it is transverse in nature. Sound wave ...