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A laser beam is traveling through an unknown substance. When it encounters a boundary with air, the angle of reflection is 24.9° and the angle of refraction is 43.0°.
(a) What is the index of refraction of the substance?
(b) What is the speed of light in the substance?
m/s
(c) At what minimum angle of incidence would the light be totally internally reflected?
°
A car is traveling along a straight road at a velocity of +27.6 m/s when its engine cuts out. For the next 1.40 seconds, Find the velocity of the car at the end of the initial 1.40-second interval
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The tractor beam exerts a constant force of 4.0 104 N on the shuttlecraft. Both spacecraft are initially at rest. Explain how far does the starship move as it pulls the shuttlecraft aboard?
An R = 54.9 ? resistor is connected to a C = 28.0 ?F capacitor and to a ?VRMS = 117 V, and f = 133 Hz voltage source. Calculate the power factor of the circuit
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