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Q1. A 2.47 kg steel ball strikes a massive wall at 11.7 m/s at an angle of alpha = 67.2° with the plane of the wall. It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.218 s, what is the magnitude of average force exerted on the ball by the wall?
Q2. Find out the breakdown voltage for an argon filled chamber having electrode separation of 0.3 cm and first Townsend coefficient of 100 cm^-1 at STP. What would be the breakdown voltage if the gas in the chamber is replaced by helium?
The power needed to operate your body is about 100 {rm watts}. Suppose your body could run on fusion power and could convert a total of 0.7 of its mass into energy. How much energy would be available through fusion? Assume the mass is 70kg.
A 1.20 liter flask contains a certain quantity of ideal gas at 305 K. next an equal number of molecules of the same gas are added to the flask, after which the absolute pressure is 1.30 times its original value. What is the final temperature.
What is speed of the second train, which travels faster
Which of the planets fits the following description: "a solid, cool surface, with occasional dust clouds and a thin CO2 atmosphere".
Find out the gravitational potential energy
What least number of grooves is required for a grating
A 3.60-{rm m}-long, 430 {rm kg} steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 66.0 {rm kg} construction worker stands at the far end of the beam. What is the magnitude..
What is the tension in the string
Find an expression for work done by the gas
What is change in the car's kinetic energy KEf - KEo from A to B. How fast will the father be moving.
A block with mass m = 19.0 kg slides down an inclined plane of slope angle 17.8 ° with a constant velocity. It is afterwards projected up the same plane with an initial speed 1.35 m/s. How far up the incline would the block move before coming to rest..
Find density of the object
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