Does the uncertainty principle affect our ability to follow the path of a baseball? Why or why not?
A) no, because the uncertainties in the position and momentum of the baseball are so small in comparison to its size and total momentum that they are unnoticeable
B) yes, because we cannot know both where the baseball is and which way it is going at the same time
C) no, because the exclusion principle says that large objects are excluded from the consequences of the uncertainty principle
D) no, because the uncertainty principle applies only to electrons
A) no, because the uncertainties in the position and momentum of the baseball are so small in comparison to its size and total momentum that they are unnoticeable
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If you stand on a weighing scale and suddenly the atmosphere vanishes, taking buoyancy into account, the scale reading
A) increases. B) decreases. C) remains the same. D) quickly reduces to zero.
A chunk of ice (T = -20°C) is added to a thermally insulated container of cold water (T = 0°C). What happens in the container?
A) The ice melts until thermal equilibrium is established. B) The water cools down until thermal equilibrium is established. C) Some of the water freezes and the chunk of ice gets larger. D) None of the above things happen.
If the pole-vaulter were to land on concrete rather than on a cushion, the impulse that stops the fall would be:
a. greater because of the rigidity of the concrete. b. greater because the force of impact is greater. c. less, because there is less change in momentum during the stop. d. less, because he would come to a stop over a shorter period of time. e. the same because impulse is the change in momentum of the object.
Which block has given up more energy to the water?
A. Block A B. Block B C. The quantity is question is the same for both blocks.