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denis23 [38]
2 years ago
12

A hockey puck is pushed by a stick with a force of 750 newtons. The puck travels 2.0 meters in 0.30 seconds. How powerful is the

push? (Ignore frictional effects.)
Physics
1 answer:
nekit [7.7K]2 years ago
5 0
The work done by the force pushing the puck is equal to the product between the force and the distance covered:
W=Fd=(750 N)(2.0 m)=1500 J

And the power is the work done per unit time:
P= \frac{W}{t}
and using t=0.30 s, we find the power:
P= \frac{1500 J}{0.30 s}=5000 W
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Which term do modern psychologists prefer to use in place of short-term memory?
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Hence, the correct answer would be option D.




7 0
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Explanation:

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(C) 4 beats per second.

Explanation:

As we know that the no of beats can be calculated as.

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Therefore the number of beats per second will be hear by the observer is 4 beats per second.

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