Helium is more abundant on Saturn than on Jupiter
Indicate whether the statement is true or false
FALSE
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If 10 J of work is used in pushing 1 C of charge into an electric field, its electric potential relative to its starting position is
A) less than 10 V. B) 10 V. C) more then 10 V. D) none of the above
In the absence of an external force, a moving object will
A) stop immediately. B) slow down and eventually come to a stop. C) gradually speed up until it reaches its terminal velocity. D) move with constant velocity in a straight line. E) move with constant velocity in a circular orbit.
The heavy boy and light girl are balanced on the seesaw. If they both move inward so that each is exactly half the original distance from the pivot, then the
1) boy's end will move downward. 2) girl's end will move downward. 3) seesaw will remain in balance. If the fulcrum of the seesaw is repositioned so each can sit at an END of the board and be in balance, then if each moves inward half way the 4) boy's end will move downward. 5) girl's end will move downward. 6) seesaw will remain balanced.
A piano wire of length 1.5 m vibrates so that one-half wavelength is contained on the string. If the frequency of vibration is 65 Hz, the amplitude of vibration is 3.0 mm, and the density is 15 g/m, how much energy is transmitted per second down the wire?
a. 21 W b. 11 W c. 5.4 W d. 2.2 W e. 1.1 W