Mechanical Properties of Fluids — Physics STD 11 Science — Question

Assume that the law of gravitation changes from inverse square to inverse cube. Does the angular momentum of a planet about the sun will remain constant?

A passenger arriving in a new town wishes to go from the station to a hotel located 10km away on a straight road from the station. A dishonest cabman takes him along a circuitous path 23km long and reaches the hotel in 28 min. What is (a) the average speed of the taxi, (b) the magnitude of average velocity? Are the two equal?

A one meter long glass tube is open at both ends. One end of the tube is dipped into a mercury cup, the tube is kept vertical and the air is pumped out of the tube by connecting the upper end to a suction pump. Can mercury be pulled up into the pump by this process?

What is the method of transmission of heat without the help of any medium called?

Where does a body weigh more at the surface of the earth or in a mine?

What is the difference between 4.0 and 4.000?

In a progressive wave, what is the path difference between a node and the antinode immediately following it. And phase difference?

A particle is in linear simple harmonic motion between two points, A and B, 10cm apart. Take the direction from A to B as the positive direction and give the signs of velocity, acceleration and force on the particle when it is:
At the end B.

A wooden charcoal and a metal piece of the same dimension are heated in the same oven to the same temperature and then removed in the dark. Which one would shine more and why?

Can we determine the mass of a satellite by measuring its time period?