The electron drift speed 
A. A
B.B
C.C
A. A
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A 2.00 kg pendulum bob on a string 1.50 m long, is released with a velocity of 4.00 m/s when the support string makes an angle of 30.0 degrees with the vertical. What is the angle with the vertical the bob makes at the highest point of its motion?
A. 85.3 degrees B. 71.2 degrees C. 60.3 degrees D. 56.7 degrees E. 45.0 degrees
A nucleon has more mass on average when it is
A) inside the nucleus. B) removed from the nucleus. C) both the same
Newton's Second Law in 1 Dimension: The figure shows an acceleration-versus-force graph for three objects pulled by wires. If the mass of object 2 is 36 kg, what are the masses of objects 1 and 3?
A. 12 kg and 90 kg B. 72 kg and 18 kg C. 90 kg and 12 kg D. 12 kg and 72 kg
A length of wire has a resistance R. The wire is then uniformly stretched to double its original length. What resistance results. Hint: When the wire is stretched, its volume remains constant
1. R/2 2. R 3. 2R 4. more than 2R