At the same moment, one rock is dropped and one is thrown downward with an initial velocity of from the top of a building that is 300 m tall. How much earlier does the thrown rock strike the ground? Neglect air resistance
What will be an ideal response?
2.4 s
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Once an alpha particle is outside the nucleus it is
A) free to wander about the surrounding material. B) quickly bound to a neighboring nucleus. C) electrostatically repelled. D) radioactive.
How does quantum uncertainty differ form the uncertainty involved in a coin flip?
A) With sufficient information, a coin flip's outcome can be predicted, but no amount of information can remove quantum uncertainties. B) They don't differ in any essential way--no amount of information can remove either type of uncertainty. C) They don't differ in any essential way--with sufficient information, both types of uncertainty can be removed. D) With sufficient information, quantum uncertainties can be removed, but no amount of information can make a coin flip's outcome predictable.
A bar magnet is falling through a loop of wire with constant velocity. The north pole enters first. As the south pole leaves the loop of wire, the induced current (as viewed from above) will be:
a. along the length of the magnet. c. counterclockwise. b. zero. d. clockwise.
The number of protons in a nucleus equals the number of neutrons
Indicate whether the statement is true or false