Choose the BEST answer to the following:The speed of sound is slightly greater on a(a) cold day.(b) hot day.(c) day with steady temperature.(d) None of these.

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A: Whenever we put fire at a place, the air surrounding the fire gets heated up. As we know that hot ai...

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A: The vertical component of the force that lifts the car off the ground will be equal to the sine comp...

Q: what is elasticity?

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Q: We measure the period of oscillation of a simple pendulum. In successive measurements, the readings ...

A: The mean value of the measurement of time period is,

Q: Efficiency of reversible engine is maximum. Why?

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Q: Explain Avogadro's law on the basis of kinetic theory of gases.

A: Avogadro law states that under certain physical conditions of pressure and temperature, with equal v...

Q: Choose the BEST answer to the following: The process of boiling water tends to (a) warm the water. (...

A: The process that turns the liquid into the vapor is boiling process. In this process, the temperatur...

Q: Choose the BEST answer to the following: A wave transfers (a) amplitude. (b) wavelength. (c) frequen...

A: All types of waves like sound waves can be considered as mechanical waves. If there is an energy sou...

Q: Hello, can you help me with this problem, I had asked this question previously and had recieved this...

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