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

What is the Young's modulus for a perfect rigid body?

Write the formula to find the value of excess pressure due to inside and outside in a soap bubble.

The dimensional formula M¹L²T^-2 represents which physical quantities?

Explain why
When we try to close a water tap with our fingers, fast jets of water gush through the openings between our fingers.

Explain why :
a brass tumbler feels much colder than a wooden tray on a chilly day.

Avarage translational K.E. of a gas molecule at absolute temperature T, how much is it?

A body of mass 2kg initially at rest moves under the action of an applied horizontal force of 7N on a table with coefficient of kinetic friction = 0.1. Compute the:
Work done by the net force on the body in 10s.

Which unit is used to measure size of a nucleus?

Change in internal energy is independent of path followed. Is it true? Why?

Write dimensional formula for compressibility.