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Question: A hydrogen atom makes a transition from the n = 3 state to the ground state and emits a single photon of light in the process. The photon then strikes a piece of silicon, which has a photoelectric work function of 4.8 eV. Calculate the energy of emitted photon. (Express your answer to four significant figures.) Find the maximum possible kinetic energy of the photoelectron. (Express your answer to three significant figures.)
A wire 3.00 m long and 0.450 mm2 in cross-sectional area has a resistance of 40 at 20°C. what is the temperature coefficient of resistivity
A whale swims due east for a distance of 1.5 km, turns around and goes due west for 5.7 km, and finally turns around again and heads 4.5 km due east. (a) What is the total distance traveled by the whale? km (b) What are the magnitude and direction..
a block of mass m 3.0 kg is attached to a spring of constant k 240 nm. it can slide along a board tilted at an angle
How much steam at 100°C must be condensed into the water if the final temperature of the system is to reach 40.0°C?
A two stage reciprocating air compressor works between pressure limits of 1 bar and 20 bar. The inlet temperature is 150C and the polytrophic index is 1.29. Inter cooling between stages reduce the air temperature back to 150C. Both stages have the..
A 201.8 kg satellite is in a circular orbit of 22,000 miles (35,405,000 m) in radius. The force keeping the satellite in orbit is 49.6 N. What is the velocity (speed) of the satellite?
two equal masses are attached to the ends of a spring whose force constant is k. With what frequency do they oscillate
Our Milky Way galaxy is 100000 ly in diameter. A spaceship crossing the galaxy measures the galaxy's diameter to be a mere 1.0 ly. What is the speed of the spaceship relative to the galaxy
An RLC series circuit has a 2.50 ? resistor, a 100 µH inductor, and an 80.0 µF capacitor. Find the average power at the circuits resonant frequency
A 1 kg ball is attached to a 2 m long piece of very light string and suspended in such a way that it can freely swing and it passes just above the ground.
Male Rana catesbeiana bullfrogs are known for their loud mating call. The call is emitted not by the frog's mouth but by its eardrums, which lie on the surface of the head. And, surprisingly, the sound has nothing to do with the frog's inflated th..
A boy is on a Ferris wheel, which takes him in a vertical circle of radius 5.5 m once every 21.0 s. What is the angular speed of the Ferris wheel
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