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Molecules conserve energy and mometum when they absorb photons. An H2 molecule at 250K absorbs a UV photon with a wavelength of 120nm. What is the change in H2's velocity?
A student (m = 56 kg) falls freely from rest and strikes the ground. All through the impact with the ground, he comes to rest in a time of 0.04 s.
A 60 g ball is tied to the end of a 50 cm --long string and swung in a vertical circle. how far to the right does the ball hit the ground
a ball is thrown straight up in the air with a velocity of 40 ms. what is the speed of the ball right before it hits
Oxygen has a molar mass of 32.0g/mol. What is the root-mean-square speed of an oxygen molecule at a temperature of 298K
A transmission line that has a resistance of 0.5 omh per km of length is used to transmit 200 MW across 300 miles. what should be the transmission voltage
The archerfish hunts by dislodging an unsuspecting insect from its resting place with a stream of water expelled from the fish's mouth, What is the vertical component of the water's initial velocity
Three equal point charges, each with charge 1.15 , are placed at the vertices of an equilateral triangle whose sides are of length 0.600 . What is an electric potential energy of the system? (Take as zero the potential energy of the three charges ..
A bullet is fired from a rifle that is held 1.69 m above the ground in a horizontal position. Calculate the time it takes for the bullet to strike the ground
A body starts from rest, moves in a straight line with constant acceleration, and covers a distance of 19.6 meters in 4 sec: what was the velocity in half the total time
An electron starts from rest 75.5 cm from a fixed point charge with Q = -0.150 µC. How fast will the electron be moving when it is too far away.
absorberdensity pnbspnbspattenuation coefficient mup cm2gmuhalf value layer hvl
q1. a proton orbits a long charged wire making 1.50 times 10 6 revolutions per second. the radius of the orbit is 1.60
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