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vodka [1.7K]
3 years ago
7

How much work does it take to slide a box 37 meters along the ground by pulling it with a 217 N force at an angle of 19° from th

e horizontal?
Physics
1 answer:
-Dominant- [34]3 years ago
8 0

Answer:

W = 7591.56 J

Explanation:

given,

distance of the box, d = 37 m

Force for pulling the box, F = 217 N

angle of inclination with horizontal,θ = 19°

We know,

Work done is equal to product of force and the displacement.

W = F.d cos θ

W = 217 x 37 x cos 19°

W = 7591.56 J

Hence, the work done to pull the box is equal to W = 7591.56 J

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Two friends are playing a version of proton golf where the hole is marked by a single proton. The first friend reads his meter,
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Answer:

the electric field strength on the second one is 2.67 N/C.

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the electric fiel on the first one is:

E1 = k×q/(r^2)

r^2 = k×q/(E1)

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then the electric field on the second one is:

E2 = k×q/(R^2)

we know that R = 3r

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E2 = k×q/(9×r^2)

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5 0
3 years ago
The notes produced by a tuba range in frequency from approximately 45 Hz to 375 Hz. Find the possible range of wavelengths in ai
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Answer:

The possible range of wavelengths in air produced by the instrument is 7.62 m and 0.914 m respectively.

Explanation:

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The notes produced by a tuba range in frequency from approximately 45 Hz to 375 Hz.

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To find,

The wavelength range for the corresponding frequency.

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The speed of sound is given by the following relation as :

v=f_1\lambda_1

Wavelength for f = 45 Hz is,

\lambda_1=\dfrac{v}{f_1}

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So, the possible range of wavelengths in air produced by the instrument is 7.62 m and 0.914 m respectively.

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