Uncertainty Principle Using Energy and Time: If the maximum possible accuracy in measuring the lifetime of a particle increases, the maximum possible accuracy in measuring its energy will
A. increase.
B. decrease.
C. not be affected.
Answer: B
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Two charges are separated by a certain distance. If the magnitude of each charge is doubled the force on each charge is
a. halved. b. doubled. c. tripled. d. quadrupled.
Consider the n = 9 shell. (a) What is the largest value of the orbital quantum number, l, in this shell? (b) How many electrons can be placed in this shell?
What will be an ideal response?
You can see a clock in a spaceship moving past you at 90% of the speed of light. According to you, how much time would pass while the clock in the spaceship ticked through one minute?
A) more than one minute B) less than one minute C) A minute is the same on the ship as it is for you. D) A minute on the ship is exactly two minutes for you.
Jennifer bungee-jumps from a bridge (event A). Jennifer’s bungee cord is perfectly elastic, so she bounces exactly back up to the bridge and lands on her feet (event B). The time between these events is measured by Jennifer’s watch, a stopwatch held by Jennifer’s friend, Rob, who is standing on the bridge, and by two passengers (one present at event A and one present at event B) who are riding on a train traveling at a constant velocity across the bridge at the time (the passengers have synchronized watches and compare readings later). Assuming the earth’s frame is inertial, who measures
(a) the longest time interval between these events? A. Jennifer B. Rob C. The train passengers