Voltage is the force on a charged object divided by the charge on the object
Indicate whether the statement is true or false
F
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A 280-lb linebacker running down the field at 7 m/s tackles a 240-lb halfback running up the field at 9 m/s. Will the halfback gain or lose yards after he is tackled?
A. gain B. lose C. neither gain nor lose
A book rests on a table, and the table rests on the ground. Which of the following pairs of forces forms a force pair, or action-reaction pair, obeying Newton's law of force pairs?
A) Gravity pulling down on the table and the book pushing down on the table. B) The ground pushing up on the table and the book pushing down on the table. C) The table pushing up on the book and the book pushing down on the table. D) Gravity pulling down on the book and the book pushing down on the table. E) Gravity pulling down on the book and the table pushing up on the book.
Instructions: On occasion, the notation 
= [A, ?] will be a shorthand notation for 
.
The vector 
has components +5 and +7 along the x and y axes respectively. If the vector is now rotated 90 degrees counterclockwise relative to the original axes, the vector's components are now
A. ?7; ?5.
B. 7; ?5.
C. ?7; 5.
D. 7; 5.
E. 7; 0.
On an H-R diagram, a protostar would be
A) below and near the right side of the main sequence. B) above and to the right of the main sequence. C) above and near the upper left of the main sequence. D) below and to the left of the main sequence. E) on the main sequence at the extreme lower right.