The trade-off when the threads are closer together, is that more turns of the screw or bolt are needed to do the job because the distance over which the input force must be applied is greater.  Harry was installing a TV mount. He drills into the wall with a screw that has 30 threads. If he used a screw of the same size with 20 threads, it would take fewer or more turns to put it in?
fewer


(Question)
In electromagnetic waves with higher frequencies, photons have more energy.  Will analyzes the photon energy in an electromagnetic wave with a high frequency. Bill analyzes the photon energy in an electromagnetic wave with a low frequency. Bill or Will's wave has less photon energy?
(Answer)
Bill


Ques: People in the richer nations of the world use far more energy, especially energy from fossil fuels, than people in the poorer nations do.  If America is a poor nation and China is a rich nation, then America's energy usage compared to China's is greater or smaller?
Ans: smaller


(Q).
When the heart expels more blood with each stroke, the heart has to beat less often in order to maintain the same volume of blood flow.  Don notices that the patient's heart is expelling more blood with each stroke. The patient's heart has to beat more or less often to maintain consistent blood flow?
(A).
less


Ques:Thicker wires offer less resistance.  Which likely offers the greatest amount of resistance a boat towing cable or a telephone cable?

Ans:a telephone cable


Ques:Higher-frequency waves have more energy.  Sasha decreases the frequency of a wave. This wave now has more or less energy?

Ans:
less