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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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?
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.