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laila [671]
3 years ago
15

To determine power, we need to know the

Physics
2 answers:
Kipish [7]3 years ago
6 0
There are several formulas for power for different units but one of them  is voltage(current)=Power
vodomira [7]3 years ago
5 0
Force and Velocity or Work and Time

Power = Force * Velocity = Work / Time
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a certain projetor uses a concave mirror for projecting an object's image on a screen .it produces on image that is 4 times bigg
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Answer:

f = 1 m

Explanation:

The magnification of the lens is given by the formula:

M = \frac{q}{p}

where,

M = Magnification = 4

q = image distance = 5 m

p = object distance = ?

Therefore,

4 = \frac{5\ m}{p}\\\\p = \frac{5\ m}{4}\\\\p = 1.25\ m

Now using thin lens formula:

\frac{1}{f}=\frac{1}{p}+\frac{1}{q}\\\\\frac{1}{f} = \frac{1}{1.25\ m}+\frac{1}{5\ m}\\\\\frac{1}{f} = 1\ m^{-1}\\\\

<u>f = 1 m</u>

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3 years ago
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When you observe a physical property the substance
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A car engine burns fuel and has moving parts. Sometimes, an engine can become too hot and overheat. What can prevent the engine
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there many things you could do, one is try getting a cooling system, another thing is its extramly hot and you may need to tunr off your car to prevent the engine from over heating.


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