For total internal reflection to take place, light must go from a medium of lower index of refraction to a medium of higher index of refraction
Indicate whether the statement is true or false
FALSE
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The Ptolemaic model of the universe was heliocentric
a. True b. False Indicate whether the statement is true or false
Power: A series circuit has a 50-Hz ac source, a 60-? resistor, a 0.50-H inductor, and a 10-?F capacitor, as shown in the figure. The rms current in the circuit is 2.2 A. What is the power factor of the circuit?
A. 0.35 B. 0.33 C. 0.31 D. 0.30 E. 0.28
What is the efficiency of an ideal Carnot engine operating between a reservoir in which ice and water coexist, and a reservoir in which water and steam coexist? The pressure is constant at 1.0 atm for both reservoirs
A) 27% B) 0.27% C) 100% D) 1.0% E) 15%
What did Thomson discover about the electron that changed a long-accepted idea about atoms?
a. That electrons are negatively charged. b. That electrons do not respond to a magnetic field. c. That electrons are smaller than atoms. d. That electrons respond to an electric field. e. That they were ionized.