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DaniilM [7]
3 years ago
11

Robert pushes the box to the left at constant speed. In doing so, Robert does ______ work on the box. A. positive B. negative C.

zero
Physics
1 answer:
andrew-mc [135]3 years ago
5 0

Answer:

He does postive work

Explanation:

Because W= F xS sinစ

So since work is done such that Force and distance have the Sam direction

Thus စ=0

Then work is positive in value

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A rocket powered sled accelerates a jet pilot in training straight forward from rest to 270 km/h in 12.1 seconds. Find:
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An acorn with a mass of .0300 kg is hanging from a branch in a tree it is 2.50 M off the ground what is the potential energy of
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According to another source this is what I got
<span>0.735 J ( Ep-potential energy, m-mass,g-gravitational acceleration = 9.81m/s², h-height; Ep = m * g * h; Ep = 0.0300 kg * 9.81 m/s² * 2.5 m ) 
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5 0
3 years ago
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An astronaut on the moon places a package on a scale and finds its weight to be 10. N. () What would the weight of the package
jeka94

Answer:

(a) 61.25 N

(b) 6.25 kg

(c) 6.25 Kg

Explanation:

Weight on moon = 10 N

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Let m be the mass of the package.

(a) Weight on earth = mass x acceleration due to gravity on earth

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(b) Weight on moon = mass x acceleration due to gravity on moon

10 = m x 1.6

m = 6.25 kg

(c) Mass of the package remains same as mass does not change, so the mass of package on earth is 6.25 kg.

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Answer:

50 Hz is the answer because 60 m/s divided by 1.2 meters is 50.

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3 years ago
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