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JulijaS [17]
3 years ago
6

In what order do the effort, fulcrum, and resistance appear on a second class lever?

Physics
1 answer:
Delvig [45]3 years ago
3 0
<span>it should be the effort resistance fulcrum

</span>
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What type of energy does friction produce?
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Answer:

The correct option is A = adiant negy.

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What is the independent variable and dependent variable of Justin wants to determine the effect of fertilizer on the growth of g
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Calculate the magnitude of the electric field at one corner of a square 2.42 m on a side if the other three corners are occupied
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Two astronauts, of masses 60 kg and 80 kg, are initially right next to each other and at rest in outer space. They suddenly push
Sergeeva-Olga [200]

Answer:

The astronauts are separated by 28 m.

Explanation:

The separation of the astronauts can be found by conservation of linear momentum:

p_{i} = p_{f}

m_{1}v_{1i} + m_{2}v_{2i} = m_{1}v_{1f} + m_{2}v_{2f}

m_{1}*0 + m_{2}*0 = m_{1}v_{1f} + m_{2}v_{2f}

m_{1}v_{1f} = -m_{2}v_{2f}

v_{1f} = -\frac{m_{2}v_{2f}}{m_{1}} = -\frac{80v_{2f}}{60}

Now, the distance (x) is:      

x = \frac{v}{t}  

The distance traveled by the astronaut 1 is:

x_{1} = v_{1f}*t = -\frac{80v_{2f}}{60}*t    (1)

And, the distance traveled by the astronaut 2 is:

x_{2} = v_{2f}*t  (2)

From the above equation we have:  

t = \frac{x_{2}}{v_{2f}}    (3)                                    

By entering equation (3) into (1) we have:    

x_{1} = -\frac{80v_{2f}}{60}*(\frac{x_{2}}{v_{2f}})

x_{1} = -\frac{4*12}{3} = -16 m    

The minus sign is because astronaut 1 is moving in the opposite direction of the astronaut 2.      

Finally, the separation of the astronauts is:

x_{T} = |x_{1}| + x_{2} = (16 + 12)m = 28 m

Therefore, the astronauts are separated by 28 m.

   

I hope it helps you!

8 0
3 years ago
A small-motorized cart can go from a standing start to 42 m/s in 7 seconds. What is the acceleration rate of the cart?
larisa86 [58]
You say 42m/s times (7s) the answer is 294m/s2 squares cause you times not sure but I am just a nice er at this sry if it’s wrong :)
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