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An incoming 40 keV photon interacts with an atom by the Compton scattering process. an electron is produced with an energy of 2keV. what is the energy of the scattered photon?
Three light bulbs each with a resistance of 50W, are connected in series to a 100 V power supply. What is the current flowing through the third light bulb.
A typical American house requires an average 20 kW for heating. Explain how many homes could be heated with the waste heat of this one power plant?
A fish hanging from the bottom of the spring oscillates vertically at a frequency of 2.55Hz, Ignoring the mass of the spring, what is the mass m of the fish
A U tube is filled with water, and the two arms are capped. The tube is cylindrical, and the right arm has twice the radius of the left arm. The caps have negligible mass, are watertight, and can freely slide up and down tube.
find the maximum distance she can be from the craft and still return within 2.30 min (the amount of time the air in her helmet remains breathable).
A tennis player places a 40 kg ball machine on a frictionless surface, as shown below. The machine fires a 0.052 kg tennis ball horizontally with a velocity of 30.6 m/s toward the north. What will be the final velocity of the machine.
A 75 kg person escapes from a burning building by jumping from a window 25-m above a catching net. Assuming that air resistance exerts a 95-N force on the person all through the fall, determine out the person's velocity just before hitting the net..
If the ball is released from rest at a height of 0.91 above the bottom of the track on the no-slip side, what is its angular speed when it is on the frictionless side of the track? suppose the ball is a solid sphere of radius 3.7 and mass 0.14.
A ranger in a national park is driving at 52 km/h when a deer jumps onto the road 86 m ahead of the vehicle. After a reaction time of t s, the ranger applies the brakes to produce an acceleration of -2.9 m/s2.
what is the max number of steps any worker should be allowed.
She moves her family to New York and begins work. Three months later, she is fired for no stated cause. Could she successfully sue for reinstatement or pay?
An electron traveling horizontally to the right enters a region where a uniform electric field is directed downward. What is the direction of the electric force exerted on the electron once it enters the electric field? A. to the left B. to the ri..
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