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A plane electromagnetic wave has an energy flux of 711 W/m2. A flat, rectangular surface of dimensions 100 cm × 24 cm is placed perpendicular to the direction of the wave. The surface absorbs half of the energy and reflects half. The speed of light is 2.99792 × 108 m/s.
a) Calculate the total energy absorbed by the surface in 1.1 min. Answer in units of J.
b) Calculate the momentum absorbed in this time. Answer in units of kg · m/s
three charges q1 q2 and q3 are located at the corners of an equilateral triangle with side length of 1.11 m. find the
A certain type of laser emits light that has a frequency of 6.0 × 1014 Hz. The light, however, occurs as a series of short pulses, each lasting for a time of 2.8 × 10-11 s. How many wavelengths are there in one pulse
Two capacitors, C1 = 28.0 µF and C2 = 34.0 µF, are connected in series, and a 24.0-V battery is connected across them. (a) Find the equivalent capacitance, and the energy contained in this equivalent capacitor.
If the reproduction constant is 1.00021 for a chain reaction in a fission reactor, by what factor does the reaction rate increase in one minute
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An ore sample weighs 14.00 N inair. When the sample is suspended by a light cord and totallyimmersed in water, Find the total volume and the density of the sample
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A 208 kg copper bar is put into a smelter for melting. The initial temperature of the copper is 300.0 K. How much heat must the smelter produce to completely melt the copper bar? (The specific heat for copper is 386 J/kg?K, the heat of fusion for cop..
consider two wire coil inductors la and lb. the inductor la is smaller than lb in diameter and la is placed inside of
A ball moving at a speed of 3.0 m/s hits an identical stationary ball. what is the velocity and direction of the incoming ball after the collision
In an experiment designed to measure the speed of light, a laser is aimed at a mirror that is 53.0 km due north. By how many meters (due east) will the reflected ray miss the detector
A farsighted man uses eyeglasses with a refractive power of 1.85 diopters. Wearing the glasses 0.02 m from his eyes, he is able to read books held no closer than 0.28 m from his eyes. He would like a prescription for contact lenses to serve the same ..
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