Physics Answers

 What will be the expected fringe shift on the basis of stationary ‘ether’ hypothesis in 

Michelson -Morley experiment if the effective length of each path is 8 m and wavelength of 

light used is 8000 Ả

A 5.0g conducting sphere with charge of 20 μC hangs by a non-conducting thread in an electric field produced by two plates separated by 8.0cm. What potential will cause the ball to hang at 25° to the vertical? 

Two blocks of mass m1 and m2 connected by a massless spring of spring constant k are placed on a smooth horizontal table. Determine the equations of motion using lagrangian mechanics.

 write the lagrangian for the system.

When a teacher asked a student to explain the ADIABATIC PROCESS from a microscopic perspective, a student wrote, “The temperature will increase because the number of collisions increases as the piston moves downward”. (i) What conceptual error, according to you, is the student making? *

What will happen if a balanced tray each side having 9 balls one of the sides one ball is removed?

the period of a simple pendulum depends on the mass (m), length (l) of the thread and acceleration due to gravity (g). derive an expression for its period using dimensional analysis

A car travels at a speed of 25 m/s on a flat stretch of road. The driver must maintain pressure on the accelerator to keep the car moving at this speed. What is the net work done on the car over a distance of 250 m?

Impulse can be defined as

An 8 kilogram bowling ball is rolling in a straight line toward you. If its momentum is 16 kg•m/sec, how fast it is traveling.

A toy truck travels a distance of 2.5 meters in 0.95 seconds after a ball is shot out from it in the opposite direction. The mass of the truck is 1kg angmdthe ball is 0.06 kg. What is the velocity of the ball.