PART - 2 CH - 8 Mechanical Properties of Solids — Physics STD 11 Science — Question

An impulse is applied to a moving object with a force at an angle of 20° w.r.t. velocity vector, what is the angle between the impulse vector and change in momentum vector?

An open pipe makes a good musical instrument, in comparison to a closed pipe. Why?

Why does the direction of motion of the projectile becomes horizontal at the highest point of trajectory?

Write an expression for distance covered in n^th second for a uniformly accelerated motion.

Two satellites are at different heights. Which would have greater velocity?

What is the effect:

1. Of highly soluble impurities on the surface tension of a liquid?
2. Of less soluble impurities on the surface tension of a liquid?
3. On the angle of contact when the temperature of a liquid is increased?

A mass m moving with a speed u collides on a similar stationary mass and sticks to it. What is the velocity after collision?

Galileo was punished by the Church for teaching that the sun is stationary and the earth moves around it. His opponents held the view that the earth is stationary and the sun moves around it. If the absolute motion has no meaning, are the two, viewpoints not equally correct or equally wrong?

What is Stokes' law?