The light output from some quasars varies in just a few hours
Indicate whether the statement is true or false
TRUE
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A car is moving with a speed of 32.0 m/s. The driver sees an accident ahead and slams on the brakes, giving the car a deceleration of 3.50 m/s2. How far does the car travel after the driver put on the brakes before it comes to a stop?
A) 4.57 m B) 9.14 m C) 112 m D) 146 m E) 292 m
The energy of a system
a. always increases. b. always remains constant. c. increases when work is done by the system. d. increases when work is done on the system.
A 3.00 kg object is moving at 5.00 m/s EAST. It strikes a 6.00 kg that is moving EAST at 2.00 m/s. The objects have a one-dimensional elastic collision in the EAST-WEST direction. The velocity of the 3.00 kg object after the collision is
A. 4.00 m/s EAST. B. 1.00 m/s EAST. C. 4.00 m/s WEST. D. 1.00 m/s WEST. E. 3.00 m/s EAST.
A pane of glass having transmissivity of 0.8 between wavelengths of 0 to 4 ?m and 0 above 4 ?m is subjected to direct radiation from the sun on one side and from a room on the other side. Assume that the sun is a black body at 6000 K and the room is a black body at 300 K. Determine the net radiation through the glass.
