Lenz's Law: According to Lenz's law, the induced current in a circuit always flows to oppose the external magnetic field through the circuit.
A. True
B. False
Answer: B
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From Earth, one satellite appears to overtake another. The faster satellite is
A) higher. B) lower. C) smaller. D) can't say
The Cassini spacecraft detected large clouds of water vapor escaping from vents through the icy crust of Saturn's moon Enceladus
a. True b. False Indicate whether the statement is true or false
A 40.0-L container is divided into two equal parts by a rubber membrane. One half of the container has 1.50 moles of an ideal monatomic gas at 250 K, and the other half is a vacuum
The container is well insulated, so there is no exchange of heat with the surroundings. The membrane breaks, and eventually the gas reaches a new equilibrium condition occupying the entire volume. What is the final temperature of the gas? A) 125 K B) 250 K C) 157 K D) 180 K E) 100 K
By how many newtons does the weight of a 100-kg person decrease when he goes from sea level to mountain top at an altitude of 5000 m? The mean radius of the earth is 6.38 × 106 m
A) 2.6 N B) 1.5 N C) 3.6 N D) 9.8 N E) 0.60 N