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A laser produces a 3.10-mW beam of light, consisting of photons with a wavelength of 610.1 nm. (a) How many photons are emitted by the laser each second? photons/s (b) The laser beam strikes a black surface and is absorbed. What is the change in the momentum of each photon that is absorbed? kg · m/s (c) What force does the laser beam exert on the black surface? N
A walkway suspended across a hotel lobby is supported at numerous points along its edges by a vertical cable above each point and a vertical column underneath. how much does the point move down in meters
Two identical rods each of length L and charge Q are perpendicular to each other and separated by a distance D, Find the force between them
The tip of a tuning fork goes through 540 complete vibrations in 0.300 s. Find the angular frequency and the period of the motion
An asteroid is discovered heading straight toward Earth at 13 . An international team manages to attach a giant rocket engine to the asteroid. The rocket fires for 10 , after which the asteroid is moving at 29 to its original path at a speed of 18..
light with a frequency of 3.75 x 10^15 Hz strikes a metal surface and ejects electrons that have a maximum kinetic energy of 5.9 eV
question1a mountain climber in procedure of crossing between two cliffs by a rope pauses to rest. she weighs 521 n. as
A cylindrical air capacitor with a length of 15.6m stores an amount of energy equal to 3.30×10?9J, Calculate the ratio of the radii of the inner and outer conductors
You are standing 2.5 {rm m} straight in front of one of the two loudspeakers. They are 3 {rm m} apart and both are playing a 686 {rm Hz} tone in phase. As you begin to walk directly away from the speaker, at what distances from the speaker do you ..
A harmonic wave travels in a wire with amplitude of 3.25 mm, wavelength 2.04 m, and frequency 636 Hz. What is the speed with which the wave travels
A model-train transformer plugs into 120-V ac and draws 0.41A while supplying 7.8A to the train. Is the transformer step-up or step-down
At time t=0, a 2650kg rocket in outer space fires an engine that exerts an increasing force on it in the + x direction. What impulse does the engine exert on the rocket during the 1.50s interval starting 2.00s after the engine is fired
You are walking along a small country road one foggy morning and come to an intersection. While you are crossing, you hear an ambulance siren, At what speed is the ambulance traveling
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