The nearest star is 1 ly from the solar system
a. True
b. False
Indicate whether the statement is true or false
False
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A v vs. t graph is drawn for a ball moving in one direction. The graph starts at the origin and at t = 5 s the acceleration of the ball is zero. We know that at t = 5 s,
a. the slope of the curve is non-zero. b. the velocity of the ball is not changing. c. the curve is not crossing the time axis. d. the curve is at v = 0, t = 0.
Exhibit 17-1
The figure below shows a sine wave at one point of a string as a function of time.
?
?
Use the exhibit to answer the following question(s).
Refer to Exhibit 17-1. Which of the graphs below shows a wave where the amplitude and the frequency are doubled?
A.
B.
C.
D.
E.
A charge, +Q, is placed inside a balloon and the balloon is inflated. As the radius of the balloon r increases the number of field lines going through the surface of the balloon:
a. increases proportional to r2. b. increases proportional to r. c. stays the same. d. decreases as 1/r.
The meter is defined in terms of the speed of ______________
Fill in the blank(s) with correct word