Waves — Physics STD 11 Science — Question

Is gravitational potential a scalar or a vector? Why?

Will a pendulum gain or lose time when taken to the top of a mountain?

What will be the change in the time period of a loaded spring when taken to moon?

Answer the following questions:

What is the frequency of oscillation of a simple pendulum mounted in a cabin that is freely falling under gravity?

From Kepler's second law and observations of the sun's motion as seen from the earth, we can conclude that the earth is closer to the sun during winter in the Northern hemisphere than during summer. Explain.

Although the r.m.s. speed of gas molecules is of the order of the speed of sound in that gas, yet on opening a bottle of ammonia in one corner of a room, its smell takes time in reaching the other corner. Explain why?

On a winter day the temperature of the tap water is 20°C whereas the room temperature is 5°C. Water is stored in a tank of capacity 0.5m³ for household use. If it were possible to use the heat liberated by the water to lift a 10kg mass vertically, how high can it be lifted as the water comes to the room temperature? Take g = 10m s^-2.

What is the order of strain within elastic limit?

What causes the rolling sound of thunder?