A 0.28-kg stone you throw rises 34.3 m in the air. The magnitude of the impulse the stone received from your hand while being thrown is
A.
B.
C.
D.
E.
Answer: C
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The number of molecules in a container is tripled and the Kelvin temperature doubled. The volume remains unchanged. The new pressure will be how many times greater than the original pressure?
Traveling at their current speeds, how long would it take the Pioneer and Voyager probes to travel the distance to the nearest stars?
A) at least 100,000 years B) several billion years C) around 4.4 years D) about a 1,000 years
An atom with atomic number 3 is in its ground state. How many electrons are in its outermost shell?
What will be an ideal response?
Two masses are suspended by a cord that passes over a pulley with negligible mass. The cord also has negligible mass. One of the masses, has a mass of 7.0 kg and the other mass,
has a mass of 3.0 kg. The pulley turns on a shaft through the center of the pulley and supports the pulley and all the masses. The vertical force of the shaft on the pulley that supports the whole system is
A. 49 N upward.
B. 49 N downward.
C. 82 N upward.
D. 82 N downward.
E. 98 N upward.