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Nadya [2.5K]
3 years ago
8

Johnson is dragging a bag on a ice surface. He pulls on the strap with a force of 112 N at an angle of 45° to the horizontal to

displace it 84 m in 3.33 minutes. Determine the work done by Johnson on the bag and the power generated by Johnson
Physics
1 answer:
Nady [450]3 years ago
5 0

Answer with Explanation:

We are given that

Force=F=112 N

\theta=45^{\circ}

Distance,s=84 m

Time, t=3.33 minutes

We have to find the work done by Johnson on the bag and the power generated by Johnson.

Work done, W=Fscos\theta

Using the formula

Work done, W=112\times 84cos45=6652.46 J

Power, P=\frac{W}{t}=\frac{6652.46}{3.33\times 60}=33.3 watt

Using 1 minute=60 s

Hence, the power generated by Johnson=33.3 watt

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A small sphere has a harge of 9uC and other small sphere has a charge of 4uC.
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Electrical force, F = 90 N

Explanation:

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A 2 nC point charge is at the origin, and a second 5 nC point charge is on the x-axis at x = 8 m. Find the electric field (magni
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Answer:

The magnitude of  the electric field is 5.75 N/C towards positive x- axis.

Explanation:

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We need to calculate the electric field at the point x = 2 m

Using formula of electric field

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3 years ago
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