The total mechanical energy of a system
A)
is equally divided between kinetic energy and potential energy.
B)
is either all kinetic energy or all potential energy, at any one instant.
C)
can never be negative.
D)
is constant, if only conservative forces act.
E)
is not uniquely determined for most naturally occurring systems.
D
You might also like to view...
You are asked to select a material for a barge tow line that must be as strong as steel cable, but can float on water and is not corroded by salt water. What material discussed in this chapter might be suitable?
What will be an ideal response?
Momentum is defined as
A) mass multiplied by velocity. B) mass multiplied by speed. C) force multiplied by velocity. D) mass multiplied by acceleration.
As a solid is gradually heated, it first glows
A) red. B) yellow. C) white. D) blue.
Greenland and Antarctica are covered with glacial ice sheets called
a. valley glaciers. b. mountain glaciers. c. continental glaciers. d. none of the above.