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inysia [295]
3 years ago
6

What are two factors affecting friction? How do they affect friction? ch

Physics
1 answer:
AlexFokin [52]3 years ago
5 0
The roughness of the surface, the mass of the object, and the area of contact.
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A man supports himself and the uniform horizontal beam pulling the rope with a force T.The weights of men and the beam are 883 N
artcher [175]

Answer:

T=502.5N

Ax=171.8N

Explanation:

The computation of the tension T in the rope and the forces exerted by the pin at A is shown below:

vertical forces sum = Ay + Tsin20 + T - 245 - 883 = 0

Now  

horizontal forces sum = Ax - Tcos70

Now Moment about B

-Ay × 4.8 + 245 × 2.4 + 883 × 1.8=0

Ay=453.6N

Now substitute in sum of vertical forces T=502.5N

Ax=171.8N

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Statement B is true.
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An object moves along the x axis. The graph shows it’s position x as a function of time t. Find the average velocity of the obje
nadezda [96]
Question is from B to C

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t1=1s, t2=5s
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3 years ago
What is the power output of a pump which can raise 60kg of water height to height of 10m every minute
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Answer:

<h3>Power = Work Done/time</h3>

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Hence the power output of a pump is 100 Watts.

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