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Levart [38]
3 years ago
11

Which shows the perceived sound wave heard by a

Physics
2 answers:
Liono4ka [1.6K]3 years ago
6 0

Answer:

The answer is D, hope you past!

Explanation:

OlgaM077 [116]3 years ago
6 0

Answer:

D

Explanation:

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Bar magnets have 2 poles. I think. Answer: first choice

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A power plant uses 365 GJ/hr of energy from a boiler and extracts 18 GJ/hr as work from a turbine and rejects the remaining ener
ziro4ka [17]

Answer:

The rate of heat rejection will be 347 GJ/hr

Explanation:

We have given that power plant uses energy of 365 GJ/hr

So energy uses Q_B=365GJ/hr

Work done from turbine W_T=18GJ/hr

We have to find the rate of heat rejection to the atmosphere Q_C

We know that Q_B=W_T+Q_C

365=18+Q_C

Q_C=347GJ/hr

So the rate of heat rejection will be 347 GJ/hr

5 0
3 years ago
The magnitude of the resultant force is to be 200 N, directed along the positive ݒaxis. Determine the magnitude of the force Fin
Ilia_Sergeevich [38]

Answer: F = 776.18N θ = 29.41°

Question:

The magnitude of the resultant force is to be 200 N, directed along the positive y-axis. Determine the magnitude of the force F Find the angle θ.

Attached is the image.

Explanation:

To solve this question we need to resolve the forces to the x and y axis.

For the x axis;

Fcosθ = 700cos15....1

For the y axis;

200 = Fsinθ - 700sin15

Fsinθ = 200 + 700sin15 ...2

Dividing equation 2 by 1

Fsinθ/Fcosθ = (200 + 700sin15)/700cos15

Tanθ = (200 + 700sin15)/700cos15

θ = Taninverse(200 + 700sin15)/700cos15)

θ = 29.41°

From equation 1;

F = 700cos15/cosθ

F = 700cos15/cos29.41

F = 776.18N

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4 years ago
Why is copper NOT used as a filament?
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Short answer, because copper wire does not have high resistance.

Explanation:

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How can a nuke (Nuclear bomb) be hotter than the sun?
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3 years ago
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