The diameter of the Moon is approximately
a) 1200 km
b) 3500 km.
c) 8000 km.
d) 6,000,000 km.
?
b
You might also like to view...
The tunneling current in an STM is _________dependent upon the negative of the gap between the tip and the specimen.
Fill in the blank(s) with the appropriate word(s).
Determine the viscosity and the kinematic viscosity for air at 330 K and at 350 K.
What will be an ideal response?
A 40-kg boy is standing on the edge of a stationary 30-kg circular platform that is free to rotate. The boy tries to walk around the platform in a counterclockwise direction. As he does:
a. the platform doesn't rotate. b. the platform rotates in a clockwise direction just fast enough so that the boy remains stationary relative to the ground. c. the platform rotates in a clockwise direction while the boy goes around in a counterclockwise direction relative to the ground. d. both go around with equal angular velocities but in opposite directions.
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
