A dart is loaded into a spring-loaded toy dart gun by pushing the spring in by a distance d. For the next loading, the spring is compressed a distance d/2. How much faster does the second dart leave the gun compared with the first?
1.two times as fast
2.the same
3.half as fast
4.one fourth as fast
3
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If an object is accelerating, it must therefore undergo
A) a change in velocity. B) a change in direction. C) a change in speed.
A battery charges a parallel-plate capacitor fully and then is removed. The plates are then slowly pulled apart. What happens to the potential difference between the plates as they are being separated?
A) It increases. B) It decreases. C) It remains constant. D) It cannot be determined from the information given.
Briefly explain why antimatter is difficult to store after it is produced in laboratories
What will be an ideal response?
Which of the following continually emits electromagnetic radiation?
A) insects B) radio antennas C) red-hot coals D) all of the above E) none of the above