Consider a situation where a constant force of 25N acts on an object having a mass of 2 kg for 3 seconds. What is the work done by the force?
a. 150 J
b. 50 J
c. 75 J
d. undetermined—not enough information given
e. none of the above
D
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Determine the energy stored in the 60-?F capacitor
a.
2.4 mJ
b.
3.0 mJ
c.
3.6 mJ
d.
4.3 mJ
e.
6.0 mJ
Would we call a large earthquake or major volcanic eruption a natural disaster if no humans were killed or buildings destroyed?
What will be an ideal response?
A resistor and a capacitor are connected in series to an ideal battery of constant terminal voltage. At the moment contact is made with the battery, the voltage across the resistor is
A) greater than the battery's terminal voltage. B) equal to the battery's terminal voltage. C) less than the battery's terminal voltage, but greater than zero. D) zero.
A man 190. cm tall stands 25. m from a plane wall mirror. One meter in front of him sits his dog, 30. cm tall. What minimum mirror size is needed for the man to see all of his dog's reflection?
What will be an ideal response?