A 1938 nickel has a diameter of 21.21 mm, a thickness of 1.95 mm, and weighs 0.04905 N. What is its density?
A) 1.37 × 10-4 kg/m3
B) 1.82 × 103 kg/m3
C) 19.3 × 103 kg/m3
D) 3.63 × 103 kg/m3
E) 7.26 × 103 kg/m3
E
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An object is moving with constant non-zero velocity in the +x-axis. The position 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.
It takes the planet Jupiter 12 years to orbit the sun once in a nearly circular orbit. Assuming that Jupiter's orbit is truly circular,
what is the distance from Jupiter to the sun, given that the distance from the earth to the sun is 1.5 × 1011 m? A) 3.9 × 1011 m B) 5.2 × 1011 m C) 7.9 × 1011 m D) 9.7 × 1011 m E) 3.2 × 1012 m
When the reflection of an object is seen in a plane mirror, the distance from the mirror to the image depends on:
a. the distance from the object to the mirror. b. the size of the object. c. the distance of both the observer and the object to the mirror. d. the wavelength of light used for viewing.
Our senses may obtain less-than-accurate information concerning our physical world because they
a. have limited sensitivity. b. have a limited range. c. are useless. d. can be deceived.