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Answer :
Final answer:
The amount of work done by the dog is 2,268 J, which is found by multiplying the power (81W) the dog generated by the time (28s) over which it was exerted. The given options in the question do not provide this as an answer choice.
Explanation:
The student's question pertains to the Physics concept of work—specifically, determining how much work a dog did based on provided information. Work, in Physics, is defined as the product of force and the distance over which it is applied. However, we're not directly given the force exerted by the dog in this problem. What we do have is the power (P) the dog generated, and power is defined as the work done (W) per unit time (t), or P = W/t. From this equation, we can solve for W to get W = P*t.
Given that the dog generated 81W for 28s, we can substitute these values into our formula: W = P*t, thus W = 81W * 28s = 2,268 J. So, none of the options (a) 97.5 J, (b) 2,925 J, (c) 105 J, (d) 81 J are correct.
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