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He-Ne lasers are often used in physics demonstrations. They produce light of wavelength 633 nm and a power of 0.500 mW spread over a cylindrical beam 1.30 mm in diameter (although these quantities can vary).
a) What is the intensity of this laser beam? (answer in W/m2)
b) What is the maximum value of the electric field? (answer V/m)
c) What is the maximum value of the magnetic field? (answer in mT)
d) What is the average energy density in the laser beam? (answer in J/m3)
You throw a 13.0N rock into the air from ground level and observe that, when it is 13.0m high, Use the work-energy principle to find the maximum height the rock will reach
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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
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a boy hears an eco of his own voice from a distant hill after 1s. The speed of the sound is 340m/s. What is the distance of the hill from the boy
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