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Which transition between energy levels n=3 to n=2, n=4 to n=2, n=5 to n=2 is associated with the largest difference in energy? And which color light has the highest frequency and the highest energy per photon?
Find internal resistance of a battery if current through resistor R2 is 0.30 A. Give answer in Ohms.
Three men are riding on a train of proper length L that is moving at speed v = 3/5 c with respect to the ground, Calculate the time difference between the two emissions, in both frames
A plate carries a charge of -3.7 C, while a rod carries a charge of +1.9 C. How many electrons should be transferred from the plate to the rod, so that both objects have the same charge.
A man pushes a lawn mower on a level lawn with a force of 212N. If 41% of this force is directed downward, how much work is done by the man in pushing the mower 7.4m?
A system of four particles made of 20 g at (4,0), 30 g at (0,6), 25 g at (-4,3) and 40 g at (-3,2) in the xy-plane, rotate about the z-axis through the centre of the coordinate system. The coordinates are given in units of centimetres. Calculate t..
a rocket is fired at a speed of 72.0 ms from ground level at an angle of 50.0 deg above the horizontal. the rocket is
A.Light of 578nm wavelength is directed at a two-slit apparatus and produces a famous intensity pattern on a screen 75.0cmaway. Each slit is 0.434mmwide, and the center-to-center separation of the slits is 0.640mm.
A racing dog is initially running at 15.0 m/s, but is slowing down. How fast is the dog moving when its kinetic energy has been reduced by half
The escape velocity of a bullet from the surface of planet Y is 1727 m/s. Calculate the escape velocity from the surface of the planet X if the mass of planet X is 1.490 times that of Y, and its radius is 0.8790 times the radius of Y (in m/s).
Each croquet ball in a set has a mass of .50kg. The green ball travels at 10.5m/s and strikes a stationary red ball. what is the final speed of the red ball after the collision
A 0.20 m 0.70 m 0.40 m block is suspended from a wire and is completely under water. What buoyant force acts on the block
Find the speed at which the penny strikes the ground Vf, in meters per second, using the initial velocity, V0, and the drop distance, h.
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