In a nuclear reactor, "chain reaction" refers primarily to
A. the process of heating water to create steam to generate electric power.
B. the process by which the fission of one nucleus causes other nuclei to undergo fission.
C. an out-of-control explosion.
D. the enrichment of uranium to make fuel for the reactor.
Answer: B
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What is the lowest frequency that will resonate in an organ pipe 1.00 m in length, closed at one end? The speed of sound in air is 340 m/s
a. 42.5 Hz c. 170 Hz b. 85.0 Hz d. 680 Hz
Conduction: A glass tea kettle containing 500 g of water is on the stove. The portion of the tea kettle that is in contact with the heating element has an area of 0.090 m2 and is 1.5 mm thick. At a certain moment, the temperature of the water is 75°C, and it is rising at the rate of 3 C° per minute. What is the temperature of the outside surface of the bottom of the tea kettle? Neglect the heat capacity of the kettle, and assume that the inner surface of the kettle is at the same temperature as the water inside. The thermal conductivity of glass is 0.840 W/m ? K and the specific heat of water is 4186 J/kg ? K.
A. 39°C B. 92°C C. 120°C D. 86°C E. 77°C
Exhibit 18-1The figure below shows wave crests after a stone is thrown into a pond.
Use this exhibit to answer the following question(s).
Refer to Exhibit 18-1. The phase difference in radians between points A and D is
A. ?. B. 2?. C. 3?. D. 4?. E. 5?.
A pipe of length L will support the lowest fundamental frequency in which of these cases?
1.if it were closed at both ends 2.if it were open at both ends 3.if it were open at one end and closed at the other 4.All of these cases support the same fundamental frequency because the pipe is the same length for each case.