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Upon being struck by 240 nanometers photons, a material ejects electrons with a maximum kinetic energy of 1.44 eV. Obtain what is the work function of this material?
A Machine Gun is attached to a railroad car that is free to roll on a frictionless track. If the railroad car of mass 62,500 kilogram is initially at rest, compute how many bullets of mass 25 gram would have to be fired
A 500-kg elevator is pulled upward with a constant force of 5500 N for a distance of 50.0 m. What is the net work done on the elevator? A 4.00-kg box of fruit slides 8.0 m down a ramp, inclined at 30.0 degrees from the horizontal. If the box slides a..
A 1 kg wheel (hoop) rolls 5 rev. across a horizontal surface (without slipping)a distance of 3.2 m. if the wheel rolls for 3 sec. determine the angular velocity of the wheel
Suppose you wish to make a solenoid whose self-inductance is 1.7 mH. How many turns of wire are needed
as 771.0 kg copper bar is put into a smelter for melting. the initial temperature of the copper is 300.0 k. how much
A 1945-W electric hair dryer is designed to work in the United States, where the ac voltage is 120 V rms. What power is dissipated in the hair dryer
A solid conducting sphere (radius=.05) has a charge of 0.25nC distributed uniformly on its surface. If point A is located at the center of the sphere and point B is 15cm from the center, what is the magnitude of the electric potential difference bet..
a 2.00 kg ball is attached to the bottom end of a length of a string 0.60 m in lenght. the top end of the string is
White light reflected at perpendicular incidence from a uniform soap film has an interference maximum at 600. nm and a minimum at 450. nm, what is the film thickness
At an outdoor market, a bunch of bananas attached to the bottom of a vertical spring of force constant 16.0 N/m is set into oscillatory motion with an amplitude of 20.0 cm. What is the weight of the bananas in newtons
You are watering your lawn with a hose when you put your fingerover the hose opening to increase the distance the water reaches.If you are pointing the hose at the same angle, and the distancethe water reaches increases by a factor of 4, what frac..
what is the ratio of the electric force holding an electron in an assumed circular orbit around a hydrogen nucleus
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