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ArbitrLikvidat [17]
3 years ago
14

Nancy applies a force to a violin string by pulling her bow across it. The vibrations of the string produce sound waves, which c

ause the wooden portion of the violin to vibrate at its natural frequency.
The violin is designed so that a string vibrates at a frequency that matches the natural frequency of the wooden portion of the instrument. So repeatedly pulling the bow across this string allows _______ to occur.
A.
sound
B.
harmony
C.
muting
D.
resonance
Physics
2 answers:
ra1l [238]3 years ago
6 0

Answer:

option a) sound is the right answer

klasskru [66]3 years ago
6 0

Answer: The correct answer is D. resonance ..

Explanation:

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We use coal, crude oil, and natural gas to generate electricity in _____________.
tresset_1 [31]

Answer:

<u>thermal power stations</u>

Explanation:

these resources are burned to produce the electricity.

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2 years ago
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Which of these accurately describes the products of a reaction?
stiv31 [10]
The one that accurately describes the products of a reaction is : B. new substances that are present at the end of a reaction
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3 years ago
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A 4.8 mF capacitor in series with a 500 Ω resistor is connected, by a switch, to a 12 V battery. The current through the resisto
ad-work [718]

Answer:

Current will be 81.7 mA

Which is not given in bellow option

Explanation:

We have given  capacitance C=4.8mF=4.8\times 10^{-3}F

Resistance R = 500 ohm

Voltage V = 12 volt

We know that time constant of RC circuit of RC circuit is given by

\tau =RC=500\times 4.8\times 10^{-3}=2.4sec

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We know that current in RC circuit is given by

i=\frac{v}{R}(1-e^{\frac{-t}{\tau }})

So current i=\frac{12}{500}(1-e^{\frac{-1}{2.4 }})=0.00817A=81.7mA

Which is not given in the following option

3 0
3 years ago
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Digiron [165]
Speed is the answer
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Why is warm up important?
atroni [7]
Because it stretches and makes your muscles ready for the activity
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