Motion in a Straight Line — Physics STD 11 Science — Question

Show that there can be no net charge in a region m which the electric field is uniform at all points.

A system containing one mole of an ideal gas is expanded adiabatically. If the temperature falls from T₁ to T₂, find the work done by the gas.

If velocity of sound in a gas depends on its elasticity and density, derive the relation for the velocity of sound in a medium by the method of dimensions.

Give one example each of central force and non - central force.

Two tuning forks vibrate with the same amplitude but the frequency of the first is double the frequency of the second. Which fork produces more intense sound in air?

Even when no heat is exchanged by the contents of a thermos flask, the contents get heated up by constant shaking. Why?

In Exercise, let us take the position of mass when the spring is unstreched as x = 0, and the direction from left to right as the positive direction of x-axis. Give x as a function of time t for the oscillating mass if at the moment we start the stopwatch (t = 0), the mass is:
At the mean position.
In what way do these functions for SHM differ from each other, in frequency, in amplitude or the initial phase?

Calculate the dimensions of force and impulse taking velocity, density and frequency as basic quantities.