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Lilit [14]
3 years ago
7

You expend 500 w of power in moving a piano 5 meters in 10 seconds. how much force did you exert?

Physics
2 answers:
shutvik [7]3 years ago
8 0
Power = Work/time
Work = Force*Displacement 

Power = (Force*Displacement )/time

500 W= F*5m/10s
F = 500W*10s/5m =1000 J/s*s/m = 1000 J/m= 1000 N
zzz [600]3 years ago
5 0

Answer:

1,000 N APEX Verified

Explanation:

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The volume of 2.0 kg of helium in a piston-cylinder device is initially 7 m3. Now the helium is compressed to 5 m3 while its pre
IrinaVladis [17]

Answer:

A) T1 = 269.63 K

T2 = 192.59 K

B) W = -320 KJ

Explanation:

We are given;

Initial volume: V1 = 7 m³

Final Volume; V2 = 5 m³

Constant Pressure; P = 160 KPa

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To find the initial and final temperatures, we will use the ideal gas formula;

T = PV/mR

Where R is gas constant of helium = R = 2.0769 kPa.m/kg

Thus;

Initial temperature; T1 = (160 × 7)/(2 × 2.0769) = 269.63 K

Final temperature; T2 = (160 × 5)/(2 × 2.0769) = 192.59 K

B) world one is given by the formula;

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6 0
3 years ago
What is the weight of an object with a mass of 19 kg?
Natalija [7]

Answer:

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Explanation:

7 0
2 years ago
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Where are the physics in football
sasho [114]

Answer:

The branch of physics that is most relevant to football is mechanics, the study of motion and its causes.

Explanation:

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Answer:

I may not have the answer so i'll just give up some hints.

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Which is an example of electrical energy being converted or changed into light energy?
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When I see the word "which" at the beginning of your question,
I just KNOW that there's a list of choices printed right there
next to he part that you copied, and for some mysterious
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Any flashlight, light bulb, laser, or spark ... like lightning ...
converts some electrical energy into some light energy.

8 0
3 years ago
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