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In a photoelectric effect experiment, a metal sample is illuminated by 10.0 mW of ultraviolet light of wavelength 240 nm. It is observed that 250,000 photoelectrons are ejected from the metal each second, with kinetic energies from 0 to 2.20 eV.
a) What is the work function of this metal, in eV?
b) What is the longest wavelength of light that can knock electrons out of this metal?
If the frequency of oscillation of the wave emitted by an FM radio station is 95.8 MHz, determine the wave's period of vibration
During a thunderstorm, winds with a speed of 49.4 m/s blow across a flat roof with an area of 751 m2
A solid spherical ball of mass 2.3 kg and radius 0.11 m rolls along a smooth, What is the ball's rotational kinetic energy
Assume that water flowing through a pipe with a circular cross section flows most rapidly at the center of the pipe and least rapidly near the pipe walls. find the speed of the water at the center of the pipe
A gold prospector finds a solid rock that is composed solely of quartz and gold. The mass and volume of the rock are, respectively, 13.1 kg and 2.08 × 10-3 m3, Find the mass of the gold in the rock
A flashlight bulb with a potential difference of 6.0 V across it has a resistance of 8.5 W. How much current is in the bulb filament
Your spaceship lands on an unknown planet. You drop a 1.50 kg wrench from 5.50 m above the ground, What is the mass of the planet, in kilograms
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A 2.0kg wood block is launched up a wooden ramp that is inclined at a 27? angle. What speed does it have when it slides back down to its starting point
The longest recorded pass in an NFL game traveled 86 yards in the air from the quarterback to the receiver.Assuming that the pass was thrown at the optimal 45 angle, what was speed at which the ball left the quarterback's hand.
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