A mass is attached to a vertical spring and bobs up and down between points A and B. Where is the mass located when its kinetic energy is a maximum?
A) at either A or B
B) midway between A and B
C) one-fourth of the way between A and B
B
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When ejected electrons from a photosensitive surface are confined within the material we have a
A) photovoltaic cell. B) light-emitting diode. C) both of these D) none of these
What, other than its existence, is unusual about the magnetic field of Mercury?
What will be an ideal response?
A point on the rim of a 0.15-m-radius rotating disk has a centripetal acceleration of 5.0 m/s2 . What is the angular speed of a point 0.075 m from the center of the disk?
a. 0.89 rad/s b. 1.6 rad/s c. 3.2 rad/s d. 5.8 rad/s
Consider the displacement vectors shown below.
a) Which vector (if any) is equal to 
?
(b) Which is not equal to but has the same magnitude?
(c) Which is equal to 
?
(d) Which is equal to 
?