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In a hydrogen atom, the electron jumps from the n=1 to the n=4 level. During the transition from n=1 to n=4, is a photon emitted or absorbed and what is the change in energy of the electron?
An ideal gas initially at pressure 8.0 atm and temperature 300K expands adiabatically until its volume doubles. Find the final pressure and temperature
A 40kg child standing on a frozen pond throws a 0.5kg stone to theeast with a speed of 5m/s. what is the recoil velocity of the child
Two gliders move toward each other on a frictionless linear air track. Glider A has mass 0.50 kg. Glider B has mass 0.30 kg. What is the final velocity of glider A.
A diffraction grating has 4436 lines/cm. Light that contains all wavelengths between 447 and 650 nm shines on the grating. Calculate the width of the dark area
If the frequency of oscillation of the wave emitted by an FM radio stationis 93.6 MHz, determine the wave's period of vibration
A person in a cave emits a sound and receives an echo 2.5 seconds later. How far is that person away from the wall
Water has a mass per mole of 18g/mol, and each water molecule (H2O) has 10 electrons.
A helium nucleus contains two protons. What is the approximate magnitude of the electric force between these two protons
A uniform electric field exists in a region among two oppositely charged plates. An electron is released from rest at the surface of the negatively charged plate and strikes the surface of the opposite plate, 3.20 cm away, in a time 1.36 x 10-8 s. Wh..
A football punter accelerates a football from rest to a speed of 9 m/s during the time in which his toe is in contact with the ball, what average force does the punter exert on the ball
A learner heats up a one-half liter (0.50 x 10-3m3) glass (Pyrex) beaker of cold coffee. Find how much coffee has spilled out of the beaker
A block is given an inital speed of 5m/s up a frictionless 20degree incline. how far up the incline does the block slide before coming to rest? Now suppose the lock is released with the same initial speed as in part a) but from the top of the icli..
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