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A pion has a rest energy of 135MeV. It decays into two gamma rays, bursts of electromagnetic radiation that travel at the speed of light. A pion moving through the laboratory at v=0.98c decays into two gamma rays of equal energies, making equal angles with the direction of motion. Find the angle (theta) adn the energies of the two gamma rays. (HInt: Gamma rays are electromagnetic radiation with E=pc)
Helicopter blades withstand tremendous stresses. Calculate the centripetal acceleration at the tip of a 4.00 m long helicopter blade that rotates at 300 rpm
In an EM wave traveling west, the B field oscillates vertically and has a frequency of 84.0 kHz and an rms strength of 6.30×10^?9T.
A 0.527 kg metal cylinder is placed inside the top of a plastic tube, the lower end of which is sealed off by an adjustable plunger, what is the initial acceleration of the metal cylinder
At the time this problem was written, the price of gold was $411 per ounce, while that of platinum was $884 an ounce, How much would a platinum nugget of this size be worth
a 17.0-g piece of styrofoam carries a net charge of -0.75 microc and is suspended in equilibrium above the center of a
A stroboscope is a light that flashes on and off at a constantrage. It can be used to illuminate a rotating object, and ifthe flashing rate is adjusted properly, What is the shortest time between flashes of light
two polarizers are oriented at 72 degress to one another. Unpolarized light falls on them. What fraction of the light intensity is transmitted
A spy satellite is in circular orbit around Earth. It makes one revolution in 6.01 hours. How high above Earth's surface is the satellite
A 100 kg scaffold is 5.8 m long. It is hanging with two wires, one from each end. A 480 kg box sits 1.4 m from the left end. What is the tension in the left hand side wire?(g = 9.8 m/s2)
7.4 kg crate slides on a horizontal surface. The coefficient of kinetic friction between the surface and the crate is 0.365. find the magnitude of the external force acting on the crate
A moth at about eye level is 5.9 cm in front of a plane mirror; you are behind the moth, 17.8 cm from the mirror. At what distance must you focus your eyes to see the image of the moth in the mirror, that is, what is the distance between your eyes..
Quadrupole moments in the shell model
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