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yawa3891 [41]
3 years ago
5

What occurs when an object vibrates in response to sound waves of a certain frequency?

Physics
1 answer:
ArbitrLikvidat [17]3 years ago
8 0
I believe its vibration or my teacher taught me wrong

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Please choose all that describe a series circuit.
jok3333 [9.3K]

Answer:

b          d                   a

Explanation:

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3 years ago
A 3.00 kg stone is dropped from a 39.2 m high building. when the stone has fallen 19.6 m, the magnitude of the impulse the earth
tatiyna
<span>The formulas are, Impulse = mv-mu ....... (1) v^2 = u^2 + 2as .......... (2) We know that, u=0 a=acceleration=gravity = 9.80665 m/s^2 = 9.81 m/s^2 s=19.6 sub (2) we get, v^2 = 0+ 2*9.81*19.6 v^2 = 2*9.81*19.6 v^2 = 384.552 v = 19.6099 v = 19.61 m/s Sub v=19.61 m/s in (1) we get, Impulse = mv - mu we know that u=0; v= 19.61 m/s; m= 3.00 kg Impulse = 3(19.61) - 3(0) Impulse = 58.83-0 Impulse = 58.83 Ns. Therefore the gravitational force exerted by the stone is 58.83 Ns.</span>
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4 years ago
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alekssr [168]
That is a closed switch
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3 years ago
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Please help me with the one in the middle
Thepotemich [5.8K]

the answer is b. gravity

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3 years ago
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A 100100​-watt ​[W] motor ​(6060​% ​efficient) is available to raise a load 1010 meters​ [m] into the air. If the task takes 808
dlinn [17]

Answer:

m = 48.93kg

The load is 48.93kg.

Explanation:

Given;

Power P = 100watts

Efficiency e = 60% = 0.60

distance d = 10 m

time taken t = 80 s

Acceleration due to gravity g = 9.81m/s

Workdone W can be expressed as;

W = ePt = Fd = mgd

ePt = mgd

Making m the subject of formula;

m = ePt/gd

Substituting the values;

m = (0.60×100×80)/(9.81×10)

m = 48.93kg

The load is 48.93kg.

4 0
3 years ago
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