A force applied to an object will always cause the object to
a. speed up
b. accelerate
c. change its momentum
d. all of the above
e. none of the above
e
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A 4.0-?C charge is situated at the origin of an xy-coordinate system. What is the potential difference between the points x = 4.0 m and y = 2.0 m because of this charge?
A) -9.0 × 103 V B) 9.0 × 103 V C) -36 × 103 V D) 36 × 103 V E) 0 V
A monochromatic light source emits a wavelength of 403 nm in air. When passing through a liquid, the wavelength reduces to 363 nm. What is the liquid's index of refraction?
a. 1.23 b. 1.05 c. 1.11 d. 1.90 e. 1.81
If the Moon is setting at noon, then it rose at
A) midnight. B) 9 A.M. C) 6 P.M. D) 6 A.M. E) noon.
Tritium has a half-life of 12.3 years. What proportion of its original radioactivity will a sample have after 2 years?
a. 0.01 b. 0.89 c. 0.37 d. 0.16 e. 0.25