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Q1. The active element of a certain laser is made of a glass rod 33.0 cm long and 1.60 cm in diameter. Assume the average coefficient of linear expansion of the glass is equal to 9.00 10-6 (°C)-1. The temperature of the rod increases by 70.0°C.
(a) What is the increase in its length?
(b) What is the increment in its diameter?
(c) What is the increment in its volume?
Q2. Write down an expression for the efficiency of the air cart bumper in terms of the initial and final kinetic energy of the cart. What defines a collision as elastic or inelastic?
The path of an electron, travelling at 3.7 × 104 meters/second, is making the right angle to a magnetic field. A single electron experiences a force of 2.2 × 10-15 Newton's while in the field. What is strength of the magnetic field .
What should be coefficient of static friction
If an average frequency emitted by a 200,-,rm W light bulb is 5.00 times 10^{14} , {rm Hz}, and 10.0 percent of the input power is emitted as visible light, approximately how many visible-light photons are emitted per second .
A 75-kg person sits on a 3.7-kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.5 cm in diameter. Find out the pressure exerted on the floor by each leg of the chair; assume the weight is evenly distributed.
Create a graph corresponding to the stone vertical velocity
Calculate change in kinetic energy
Question on constant speed
Assume the charge on black hole is 5740 C. At what distance from it is the electric potential equal to 1100 V.
At 500°C, the diffusion coefficient of Zn in brass is 4.10-17 m2.s-1. What is the flux of Zn moving down the rod.
What is the height of the hill . Find the coefficient of kinetic friction between flight bag and floor.
Find the distance from the positive plate
Calculate the dc voltage applied to the circuit.
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