Is the TMA always greater than the AMA for a machine? Explain
TMA is always greater than AMA because friction is always present and must be
overcome by the input force, although this effect may be so small that it is difficult to
detect, especially at slow speeds.
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If a metal has a low cohesive energy, the metal is expected to have a ______________hardness.
Fill in the blank(s) with the appropriate word(s).
Which of these undergoes circular motion?
a. A bullet shot from a gun. b. A top spinning on a table. c. A baseball hit by a bat. d. A satellite orbiting the Earth. e. An apple falling out of a tree.
What two factors can change a rock's melting point?
What will be an ideal response?
When star light passes by the sun
A) it is unaffected by the sun. B) it is deflected away from the sun. C) it is deflected toward the sun. D) it is absorbed by the sun.