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Sidana [21]
2 years ago
10

What is the definition of electrical power?

Physics
1 answer:
Nonamiya [84]2 years ago
6 0
An electric power measure the rate of electrical energy transfer by an electric circuit per unit of time.
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Two friends are carrying a crate of mass 200 kg up a flight of stairs. The crate has length 1.25 m and height 0.500 m, and its c
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Ans; see attached file for calculation and answer

Explanation:

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Should a flat grassland or a hillside have deeper soil? Explain your answer.
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A hillside of course my friend
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The largest stars are _____ times the mass of the Sun. 10 100 1,000 10,000
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<h3><u>Answer;</u></h3>

100 times

<h3><u>Explanation;</u></h3>
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True or False<br> further the sun, the longer the shadow
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An 8.5 kg crate is pulled 5.1 m up a 30 degree incline by a rope angled 17 degrees above the incline. The tension in the rope is
Ulleksa [173]

Answer:

1. a W_t=746.63 J

  b E_p=212.415 J

  c W_n=183.96J

2. T_e=99.71J

Explanation:

a). The work done by the tension is:

W_t=T*dt

dt=\frac{5.1}{cos(17)}

W_t=140N*\frac{5.1}{cos(17)}

W_t=746.63 J

b). The work done potential of gravity

E_p=m*g*h

h=5.1*sin(17)

E_p=8.5kh*9.8*5.1*sin(30)

E_p=212.415 J

c). The work done by the normal force

W_n=N*d_n

d_n=5.1*sin(30)=2.55

W_n=8.5kg*9.8*cos(30)*2.55

W_n=183.96J

2. The increase in thermal energy is:

T_e=F*d

F_k=u_k*m*g=0.271*8.5kg*9.8*cos(30)

F_k=19.5N

T_e=19.55*5.1m

T_e=99.71J

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3 years ago
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