An innovative physics professor conducts laboratory exercises in the college swimming pool. Suppose that one exercise was the measurement of the degree of polarization by bouncing laser light off the vertically-oriented transparent polycarbonate side wall of the pool. The laser is shone on the pool wall at an angle of 42 degrees with respect to the vertical, and at that angle the reflected ray is perfectly polarized. What is the index of refraction of the material? It will help to recall that the index of refraction of water is 1.33.
A. 1.11
B. 1.28
C. 1.20
D. 1.48
D. 1.48
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_____ is an example of a Terrestrial planet
A) Jupiter B) Saturn C) Mars D) Neptune
How much power is theoretically available from a mass flow of 1 000 kg/s of water that falls a vertical distance of 120 m?
a. 1.18E+6 kW b. 1.20E+5 kW c. 1.18E+3 W d. 8.17E+1 W e. 1.18E+6 W
A series RLC circuit contains a 20.0-V resistor, a 0.750-mF capacitor, and a 120-mH inductor. If a sinusoidally varying rms voltage of 120 V at f = 500 Hz is applied across this combination of elements, what is the rms current in the circuit?
1.2.33 A 2.6.00 A 3.10.0 A 4.17.0 A 5.none of those answers
The average temperature over the past 1000 years has been about 15?C?C. From the graphs, you can conclude that Earth's average temperature during the past 800,000 years has
A. varied between about 7?C and 19?C B. stayed remarkable steady, never varying by more than about 2?C C. never been as high as it is today D. varied between about ??10?C and +4?C