Consider a region of space where the electric field is uniform with magnitude 
, as shown below. What is the value of the specified potential difference in each case? (a) ?B - ?A? (b) ?C - ?B? (c) ?A - ?C?
A. 
B. 
C. 
D. 
E. 
F. 
T. zero
T. zero
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Young's Modulus: A solid steel column is 4.0 m long and 0.20 m in diameter. Young's modulus for this steel is 2.0 × 1011 N/m2. By what distance does the column shrink when a 5000-kg truck is supported by it?
A. 8.0 × 10-7 m B. 3.2 × 10-6 m C. 7.8 × 10-6 m D. 3.1 × 10-5 m
When ice floats in water, a small part of it extends above the surface. Interestingly, the volume of ice that extends above the surface is equal to the volume of the
A) water the ice displaces. B) vast number of open spaces in the hexagonal ice crystals. C) both of these D) none of the above
If the 14 billion year history of the universe were compressed to one year, and "now" is exactly midnight December 31, approximately how long ago were your grandparents born?
A) 0.15 second ago B) 1 second ago C) 1 minute ago D) 1 hour ago
A mass of 355 g hangs from one end of a string that goes over a pulley with a moment of inertia of 0.0125 kg?m2 and a radius of 15.0 cm. A mass of 680 g hangs from the other end
When the masses are released, the larger mass accelerates downward, the lighter mass accelerates upward, and the pulley turns without the string slipping on the pulley. What is the acceleration of the masses? A) 2.00 m/s2 B) 3.82 m/s2 C) 2.87 m/s2 D) 5.74 m/s2 E) 7.78 m/s2