A 200-g hockey puck is launched at an initial speed of 16 m/s up a metal ramp that is inclined at a 30° angle. The coefficients of static and kinetic friction between the hockey puck and the metal ramp are µs = 0.40 and µk = 0.30, respectively
What vertical height does the puck reach above its starting point?
A) 17 cm B) 13 cm C) 4.2 cm D) 8.6 cm
D
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Suppose two stars are separated in the sky by 0.1 arcseconds. If you take a picture of them with the SOAR telescope, which has an angular resolution of 0.6 arcsecond, what will you see?
A) one point of light that is the blurred image of both stars B) two separate points of light C) nothing at all
What characteristic of light mostly relates to color?
A) frequency B) amplitude C) both of these
Starting from rest, a wheel undergoes constant angular acceleration for a period of time T. At what time after the start of rotation does the wheel reach an angular speed equal to its average angular speed for this interval?
a. 0.25T b. 0.50T c. 0.67T d. 0.71T
When your eye forms an image, the ________ plays a role analogous to the detector in a camera.
A) retina B) lens C) pupil D) optic nerve