Household wiring can emit electromagnetic waves of frequency 60 Hz. What is the wavelength of these waves?
A. 
B. 
C. 
D. 
E. 
E.
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The redshifts of the galaxies imply that the Universe is expanding and that we are at the center
Indicate whether the statement is true or false
The unit of electric current, the ampere, is equivalent to which of the following?
a. V?? b. V/? c. ??m d. V/s
In a resonating pipe which is open at both ends, there
A) are displacement nodes at each end. B) are displacement antinodes at each end. C) is a displacement node at one end and a displacement antinode at the other end. D) all of the above are possible E) none of the above
Consider the motion of a 1.00-kg particle that moves with potential energy given by U(x) = -(2.0 J?m)/x + (4.0 J?m2)/x2. Suppose the particle is moving with a speed of 3.00 m/s when it is located at x = 1.00 m
What is the speed of the object when it is located at x = 5.00 m? A) 2.13 m/s B) 3.00 m/s C) 4.68 m/s D) 3.67 m/s E) This question cannot be answered. You need to know the direction of the velocity, not just the speed, when the particle is located at x = 1.00 m.