A catapult fires an 800-kg rock with an initial velocity of 100 m/s at a 40° angle to the ground. The magnitude of the vertical impulse the catapult receives from the rock is
A.
s.B.
s.C.
s.D.
s.E.
s.Answer: A
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Which type of force would be the equal and opposite force to a gravitational force?
A. gravitational B. electromagnetic C. strong D. weak E. It could be any one of the above or some combination of them.
The dynamo effect is believed to produce the ____________________ of the sun
Fill in the blank(s) with correct word
Charge of uniform density (0.30 nC/m2) is distributed over the xy plane, and charge of uniform density (–0.40 nC/m2) is distributed over the yz plane. What is the magnitude of the resulting electric field at any point not in either of the two charged planes?
a. 40 N/C b. 34 N/C c. 28 N/C d. 46 N/C e. 6.0 N/C
Consider the following statement, and explain whether or not it is sensible: My sign is Ursa Major because the Sun was in Ursa Major when I was born
What will be an ideal response?