An object is moving with constant non-zero acceleration in the +x-axis. The velocity versus time graph of this object is
A) a horizontal straight line.
B) a vertical straight line.
C) a straight line making an angle with the time axis.
D) a parabolic curve.
E) a hyperbolic curve.
C
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A very long string is tied to a rigid wall at one end while the other end is attached to a simple harmonic oscillator. Which of the following can be changed by changing the frequency of the oscillator?
A. The speed of the waves traveling along the string. B. The tension in the string. C. The wavelength of the waves on the string. D. All of the above. E. None of the above.
The light reflected from a soap bubble (n = 1.40) appears red (l = 640 nm) at its center. What is the minimum thickness (in nm)?
a. 124 b. 104 c. 114 d. 134 e. 234
Simple Pendulum: A simple pendulum has a period T on Earth. If it were used on Planet X, where the acceleration due to gravity is 3 times what it is on Earth, what would its period be?
A. 3T
B. 
T
C. T
D. T/
E. T/3
Almost all stars on the main sequence range from 1 to 10 solar luminosities
Indicate whether the statement is true or false