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When a laser beam reflects from a rotating mirror, it produces pulses of light with a band of frequencies centred on the fundamental optical frequency. Why do the light pulses give rise to a band of frequency?
A thin double convex lens is to focus the image of an object onto a screen so that the image is life-sized. What is the distance d from image to screen
A refrigerator does 135.0 J of work to remove 540.0 J of heat from its cold compartement. How much heat per cycle is exhausted to the kitchen
Red light from three separate sources passes through a diffraction grating with 6.00×10^5 Lines/m. Calculate the angles for the first-order diffraction lines
a cylinder with initial volume v contains a sample of gas at pressure p. on one end of the cylinder a piston is let
A transformer with 410 turns in its primary coil and 34 turns in its secondary coil is designed to deliver an average power of 1300 W with a maximum voltage of 60 V
Here's a basketball problem: A 75.0 kg basketball player is running in the positive direction at 8.2 m/s. what is the resulting velocity of the 75.0 kg player
A mass is attached to a spring. It oscillates at a frequency of 4/? Hz when displaced a distance of 7.00 cm from equilibrium
A 390 nm thick film floats on a puddle of water. When illuminated normally with 700 nm light there is no reflection, but 400 nm light is strongly reflected. What is the film's index of refraction
176.12 J of energy are transferred to a system in the form of heat while the internal energy decreases by 30.69 J. How much work is done by the system
An aluminum wire is 20m long and has a radius of 2mm = 2x10^-3 m. The linear limit for aluminum is 0.6x10^8 N m^-2. a.) how large a tension force must be applied to stretch the wire to its linear limit? b.) how much will the wire stretch when this fo..
The giant hornet Vespa mandarinia japonica preys on Japanese bees. However, if one of the hornets attempts to invade a beehive, several hundred of the bees quickly form a compact ball around the hornet to stop it. They don't sting, bite, crush, or..
Two stationary point charges of 4 nC and 2 nC are separated by a distance of 60 {rm cm}. An electron is released from rest at a point midway between the charges and moves along the line connecting them. What is the electric potential energy of the..
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