You are holding on to the axle of a spinning bicycle wheel with one hand on either side of the wheel. The top part of the wheel is moving away from you and the bottom is moving toward you and the axle is horizontal. In what direction do you need to apply a torque for the wheel to turn to the left?
A) toward you
B) away from you
C) vertically up
D) vertically down
E) to your right
A
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Evaluate the Nusselt number for flow over a sphere for the following conditions
GIVEN
FIND
The Nusselt number (Nu)
If excess charge is put on a spherical conductor,
A) it remains where it was placed B) it spreads a little from where it was placed but not over the whole sphere C) it spreads uniformly over the surface of the sphere if the sphere is small D) it spreads uniformly throughout the volume of the conductor E) it spreads uniformly over the surface of the sphere
Science is a body of knowledge that
A) describes order in nature. B) is an ongoing human activity. C) condenses knowledge into testable laws. D) all of the above E) none of the above
Voltage can also be called potential
a. True b. False Indicate whether the statement is true or false