A strong gravitational field
A) slows a clock.
B) speeds up a clock.
C) has no effect on the speed of a clock.
Answer: A
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According to the 2013 report from which body (which is informed by the world's most accomplished atmospheric scientists) have global temperatures been increasing in recent years?
A) Association of National Talk Show Hosts B) National Association of Chemists C) Mobil Oil Corporation D) Intergovernmental Panel on Climate Change
Liquid sodium is to be heated from 500 K to 600 K by passing it at a flow rate of 5.0 kg/s through a 5-cm-ID tube whose surface is maintained at 620 K. What length of tube is required?
GIVEN
FIND
The length of tube (L) required
ASSUMPTIONS
Surface temperature is constant and uniform
SKETCH
PROPERTIES AND CONSTANTS
for liquid sodium at the average bulk temperature of 550 K
If Mars is on your meridian at midnight, it is a great time to view Mars and we say that Mars is at
a)Perihelio b)greatest elongation c)conjuction d)opposition
An absorption line spectrum, with dark lines crossing the rainbow of the continuum, is produced by a low-density hot gas
Indicate whether the statement is true or false