Waves — Physics STD 11 Science — Question

Which quantity does not change during change of state?

An object is moving in a plane in a direction different from the direction of its initial velocity. What will be the path covered by it?

A car travels at a speed of 60km/hr due north and the other at a speed of 60km/hr due east. Are the velocities equal? If no, which one is greater? If you find any of the questions irrelevant, explain.

What is the difference between 4.0 and 4.000?

It is said that the assumptions of kinetic theory are good for gases having low densities. Suppose a container is so evacuated that only one molecule is left in it. Which of the assumptions of kinetic theory will not be valid for such a situation? Can we assign a temperature to this gas?

Consider the situation described in the previous problem. Show that the force on the sphere due to the light falling on it is the same even if the sphere is not perfectly absorbing.

Why are space rockets usually launched from west to east in the equatorial plane?

How is shear modulus related to Young's modulus?

Define impulse and tell its unit

When the direction of an object is reversed after completing one revolution, what will be its effect on the direction of centripetal force?