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Tems11 [23]
3 years ago
8

Instruments use resonance to amplify sound.....true/false

Physics
2 answers:
chubhunter [2.5K]3 years ago
3 0
Yep thats true
now i have to write 20 characters blah blah blah done
Marina CMI [18]3 years ago
3 0
Yes they do espesy the guitar they use the vibs in the hollow area that eaco thew   
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A hunter fires a rifle while seated with the butt of the gun resting against their shoulder. If the forward momentum is the same
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Answer:

Because the bullet is smaller and has a sharp/pointy tip.

Explanation:

The bullet kinda puts the majority of kinetic energy in a small are, whereas the gun butt kinda spreads the energy evenly amongst a larger surface. If more explanation is needed add comment.

6 0
3 years ago
in oder to reduce the amount of energy lost due to heat flow, electricity is deliverd to our homes useing
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High voltage transmission wires. Electrical lines you see outside of your home and basically everywhere you go.
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4 years ago
A car hits a tree with a force of 45 N, the mass of the tree is 65g. What is the resulting acceleration?
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i think 692m/s2 is the correct answer

4 0
3 years ago
A room has a volume of 160 m3. An air-conditioning system is to replace the air in this room every 21.3 minutes, using ducts tha
serious [3.7K]

Answer:

A. 0.204203928 m

b. 0.1443939822

Explanation:

Givens:

Volume (V) = 160 m^3

velocity 1 (v1) = 3.00 m/s

velocity 2 (v2) = 6.00 m/s

Time (t) = 21.3 minutes = 1278 seconds

Side length = ?

V = A*v*t

A = s^2

V = s^2*v*t

s= \sqrt{\frac{V}{v*t} }

A.

s = \sqrt{\frac{V}{v*t} } = \sqrt{\frac{160}{3.00*1278} } = 0.204203928 m

B.

s = \sqrt{\frac{V}{v*t} } = \sqrt{\frac{160}{6.00*1278} } = 0.1443939822 m

I hope this helped!! Have a good day.

7 0
3 years ago
What is the current in a 160 V circuit if the resistance is 2
galben [10]

V= IR

160 = I × 2

80 A = I = current

8 0
3 years ago
Read 2 more answers
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