When Nellie Newton hangs at rest in the middle of a clothesline, the tension will not be the same in each side of the rope when
A) the lengths of rope on each side are different.
B) the angles at each side of the rope are unequal.
C) she is in equilibrium.
D) none of the above
Answer: B
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A 4.00 kg object is moving at 5.00 m/s EAST. It strikes a 5.00 kg that is moving WEST at 2.00 m/s. The objects have a one-dimensional elastic collision in the EAST-WEST direction. The velocity of the 5.00 kg object after the collision is
A. 4.22 m/s EAST. B. 2.78 m/s WEST. C. 4.22 m/s WEST. D. 2.78 m/s EAST. E. 1.11 m/s WEST.
Two radio antennas are 120 m apart on a north-south line, and they radiate in phase at a frequency of 3.4 MHz
All radio measurements are made far from the antennas. If the east-west reference line passes midway between the two antennas, what is the smallest angle from the antennas, measured north of east, at which constructive interference of two radio waves occurs? (c = 3.00 × 108 m/s) A) 30° B) 47° C) 43° D) 68° E) 22°
A solenoid of length 4.00 cm and cross-sectional area 2.00 cm2 has 80 turns. What is its self- inductance?
A. 160 
H
B. 120 H
C. 80.0 H
D. 40.0 H
E. 0.500 H
During an adiabatic compression, does a gas’s temperature increase, decrease, or remain the same?
A. It increases. B. It decreases. C. It remains the same.