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Mice21 [21]
3 years ago
15

If 478 watts of power are used in 14 seconds,how much work was done

Physics
1 answer:
zepelin [54]3 years ago
6 0

Answer:

6692J

Explanation:

Power is defined as the rate at which work is being done.

So,

    Power  = \frac{workdone}{time }  

  Work done  = Power x time

Given parameters:

Power  = 478watts

Time  = 14s

So;

 Work done  = 478 x 14  = 6692J

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F = 104.832 N

Explanation:

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A disk with a rotational inertia of 2.0 kg m2 and a radius of 1.6 m is free to rotate about a frictionless axis perpendicular to
aleksandrvk [35]

Answer:

a) 4.0 rad/s2

Explanation:

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       τ = I  * α (1)

        where τ is the net external torque applied, I is the rotational inertia

       of  the body with respect to the axis of rotation, and α is the angular

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  • At the same time, we can apply the definition of torque to the left side of (1), as follows:

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      In this particular case, as Fnet  is applied tangentially to the disk, Fnet

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