Graphical Analysis: If the velocity versus time graph of an object is a straight line making an angle of +30° (counter clockwise) with the time axis, the object is
A. moving with constant non-zero speed.
B. moving with constant non-zero acceleration.
C. at rest.
D. moving with increasing acceleration.
Answer: B
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What is this object?
A) Jupiter's moon Europa B) Saturn's moon Titan C) Uranus's moon Miranda D) Neptune's moon Triton E) Jupiter's moon Callisto
If an extrasolar planet suddenly became more massive, but kept the same radius and orbit, what would change during an observed transit?
A) The amount of starlight would have a larger dip during the transit. B) The amount of starlight would have a smaller dip during the transit. C) The time between transits would decrease. D) The time between transits would increase. E) Nothing. The mass of a planet does not affect the appearance of a transit.
A block pulled to the left with 15 N and to the right with 5 N at the same time experiences a net force of
A) 5 N. B) 10 N. C) 15 N. D) 20 N.
The angle of incidence of a light wave is
a. different depending on whether there is diffuse or specular reflection. b. measured from a normal to the surface. c. equal to the angle of refraction. d. measured relative to the surface of the material.