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Bingel [31]
3 years ago
6

Question 3

Physics
1 answer:
Yuki888 [10]3 years ago
4 0

Answer:

Power = 2.5kW

Explanation:

Given

Mass = 200kg -- mass of tub

Energy = 200,000J

Time = 80s

Required

Determine the amount of power needed

Power is calculated as thus:

Power = \frac{Energy}{Time}

Substitute values for Energy and Time

Power = \frac{200,000J}{80s}

Power = 2500W

Divide by 1000 to convert to kW (kilowatt)

Power = 2.5kW

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ivolga24 [154]

Answer:

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Mrs Wood runs 10 s vs 10.4 for Mr Overstreet

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3 years ago
How does amplitude determine loudness?
sdas [7]

Answer:

Explanation:

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A light wave travels through air in equals 1.00 at an angle of 35 degrees what angle does it have when it passes from the air in
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Answer: Angle 59 degree

Explanation: Given that the

n1 = 1.0

n2 = 1.5

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From Snell law, which says that

n1/n2 = sinØ1/ sinØ2

Substitute all the parameters into the formula

1/1.5 = sin 35/sinØ2

Cross multiply

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SinØ2 = 1.5 × 0.573 = 0.860

Ø2 = sin^-1(0.860)

Ø2 = 59.36 degree

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5 0
3 years ago
A proton moving at 3.90 106 m/s through a magnetic field of magnitude 1.80 T experiences a magnetic force of magnitude 7.20 10-1
VARVARA [1.3K]

Answer:

\theta=40^0

Explanation:

The magnitude of the magnetic force is

F_m=evB\sin\theta

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\implies \sin\theta=\frac{F_m}{evB}=\frac{7.20\times 10^{-13}}{1.6\times 10^{-19}\times 3.90\times 10^6\times 1.80}

\implies \sin\theta=0.641025641

\therefore \theta=\sin^{-1}=39.8683^0\\\implies \theta\approxeq 40^0

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Answer:

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