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denis23 [38]
3 years ago
5

Why does a vibrating simple pendulum not to produce any sound

Physics
1 answer:
Gelneren [198K]3 years ago
7 0
It does produce 'sound' ... a compression wave traveling through the air. But your ears don't hear a sound that's vibrating less than 20 or 30 times every second. If you could swing your pendulum that fast, you could hear the sound of its vibrations pushing the air around.
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A water pump is a positive displacement-type pump true or false
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Answer: True

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Moreover, water pump is a reciprocating positive displacement pump that have an expanding cavity on the suction side and a decreasing cavity on the discharge side. In water pumps, the liquid flows into the pumps as the cavity on the suction side expands and then the liquid flows out of the discharge as the cavity collapses providing water in a pail.

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A fisherman is fishing from a bridge and is using a "44.0-N test line." In other words, the line will sustain a maximum force of
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Answer:

a) 4.485 kg b) 3.94 kg

Explanation:

since the maximum tension the line can stand is 44 N and for question a the speed is constant (acceleration must be zero since the velocity or speed is not changing), F(tension) = mass * acceleration due to gravity (g) .

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3 0
3 years ago
Which uses direct current?
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Explanation:

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