A flywheel rotating at 640 rev/min is brought to rest with a uniform deceleration of 2.0 rad/s2. How many revolutions does it make before coming to rest?
A)
320
B)
17
C)
160
D)
360
E)
180
E
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Jennifer hits a stationary 200. gram ball and it leaves the racket at 40. m/s
If time lapse photography shows that the ball was in contact with the racket for 40. ms: (a) What average force was exerted on the racket? (b) What is the ratio of this force to the weight of the ball?
How does the cosmic background radiation relate to the Big Bang?
What will be an ideal response?
The figure shows a ‘snapshot’ of four different waves in identical ropes stretched with the same force
The wave with the largest wavelength is wave
a.
I.
b.
II.
c.
III.
d.
IV.
e.
all of the above
__________ in an x ray spectrum of an atom occurs because of rapid deceleration of the bombarding electrons
Fill in the blank(s) with correct word