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balu736 [363]
3 years ago
12

Work occurs when

Physics
1 answer:
andrew-mc [135]3 years ago
6 0
The answer is the FIRST OPTION 
Work occurs when a force is applied to an object and the object moves in the direction of the force applied <span />
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Why is photoelectric effect important?
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3 years ago
A community plans to build a facility to convert solar radiation to electrical power. The community requires 1.00 MW of power, a
Aneli [31]

We will find that the effective area that must be used to get the desired power is 3,333.33 m^2

The information we have is:

power needed = 1.00 MW = 1,000,000 watts

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We know that the system has an efficiency of 30%, then per meter square, the energy converted is:

E = 0.3*1,000 W/m^2 = 300 W/m^2

Now we need to find the area (in meters squared) such that:

A*E  = 1,000,000 watts

A*(300 W/m^2) =  1,000,000 watts

A = (1,000,000 watts)/(300 W/m^2) = 3,333.33 m^2

So the effective area that must be used is A =  3,333.33 m^2

If you want to learn more, you can read:

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6 0
2 years ago
An object that has momentum must have
Mama L [17]

Answer:

Mechanical energy

Explanation:

If an object does not have any momentum, then it doesn't have mechicanl energy.

3 0
2 years ago
Distances (d)=144m<br> Time (t)=12s<br><br><br> What is the speed?
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Speed=distanse/time
144/12=12
ans is 12m/s
5 0
3 years ago
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