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Vesnalui [34]
3 years ago
8

Who does more work - a man who lifts a large box from the ground up into the back of a truck, or a man who puts the same box on

a trolley and wheels it up a ramp into the truck?
•the man who lifts it
•the man who uses the trolley
•they do the same work


Please i need help ASAP!!! *will mark brainliest if right*​
Physics
1 answer:
Viefleur [7K]3 years ago
4 0
Answer :
The man who uses the trolley
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A square is cut out of a copper sheet. Two straight scratches on the surface of the square intersect forming an angle theta. The
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Answer:

<em>a) increases</em>

Explanation:

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How do I solve this problem
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it is light

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A wave of infrared light has a speed of 6 m/s and a wavelength of 12 m. What is the frequency of this wave?
givi [52]
I'll be happy to solve the problem using the information that
you gave in the question, but I have to tell you that this wave
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If it was a wave of infrared, then its speed would be close
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For the wave you described . . .

             Frequency  =  (speed)  /  (wavelength)

                                 =  (6 m/s)  /  (12 m)

                                 =      0.5 / sec

                                 =      0.5 Hz .  

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