A loop of wire is rotated about a diameter (which is perpendicular to a given magnetic field.) In one revolution the induced current in the loop reverses direction how many times?
A) 0
B) 4
C) 2
D) 1
E) 3
C
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In a certain chemical reaction, 8.1 × 10-19 J of energy is released per molecule formed
What is the difference in mass per molecule between the sum of the masses of the molecules of the reagents before the reaction and the mass of the molecules produced by the reaction? (c = 3.0 × 108 m/s) A) 2.7 × 10-27 kg B) 8.1 × 10-28 kg C) 9.0 × 10-36 kg D) 5.4 × 10-32 kg E) 3.2 × 10-27 kg
Air expands adiabatically (no heat in, no heat out) from T = 300 K and P = 100 atm to a final pressure of 1 atm. Treat the gas as ideal with g = 1.4, and determine the final temperature. Compare your result to the boiling points of nitrogen (77.4 K) and oxygen (90.2 K). Could this method result in the liquification of air?
In the circuit shown in Figure OQ28.12, each battery is delivering energy to the circuit by electrical transmission. All the resistors have equal resistance. Rank the magnitudes of the currents at the same points from greatest to least, noting any cases of equality
1. b > c > a = e > d 2. a > d > b = c > e 3. e > a = b > c = d 4. c = d > b > a > e
In order for two waves to interfere completely destructively, they must have the same amplitude
Indicate whether the statement is true or false