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Ira Lisetskai [31]
3 years ago
7

Which of the following concepts helps explain the modern technology used in 3D films?

Physics
1 answer:
stealth61 [152]3 years ago
6 0

Answer:

a.

Explanation:

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A weightlifter lifts a 1250-N barbell 2 m in 3 s.How much power was used to lift the barbell?
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The power is 833.3 W

Explanation:

First of all, we need to calculate the work done in lifting the barbell, which is equal to the change in gravitational potential energy of the barbell:

W=(mg)h

where

mg = 1250 N is the weight of the barbell

h = 2 m is the change in height

Substituting,

W=(1250)(2)=2500 J

Now we can calculate the power, which is equal to the work done per unit time:

P=\frac{W}{t}

where

W = 2500 J is the work done

t = 3 s is the time taken

Substituting,

P=\frac{2500}{3}=833.3 W

Learn more about power:

brainly.com/question/7956557

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this question is troubling me i guessed 96 ft/s

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Which country has more nuclear power stations, the UK or France?
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