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Marysya12 [62]
3 years ago
5

What can Lisa do to increase the strength of the electromagnet?

Physics
1 answer:
drek231 [11]3 years ago
4 0

Answer:

move the wire loops closer

Explanation:

because the closer t they are the more concentrated the energy is in that specific area

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A soccer player carries the ball for a distance of 40.0 m in the direction 42.0° west of south. find the westward component of t
Maksim231197 [3]

Actually what the problem meant about the westward component of the ball’s displacement is the horizontal component of the displacement. To help us better understand the problem, I attached a figure of the situation.

We can see from the figure that to solve for the value of the horizontal component, we have to make use of the sin function. That is:

sin θ = side opposite to the angle / hypotenuse of the triangle

sin 42 = x / 40 m

x = (40 m) sin 42

x = 26.77 m

 

Therefore the ball has a westward displacement of about 26.77 m

3 0
3 years ago
The input work done on a machine is 9.63 × 103 joules, and the output work is 3.0 × 103 joules. What is the percentage efficienc
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Input work = 9.63×10³ J.
Output work = 3.0×10³ J

By definition,
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                 = (3.0×10³)/(9.63×10³)
                 = 0.31 = 31%

Answer:  31%
5 0
3 years ago
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If a car increases its speed from 20km/h to 100 km/h undergoes positive acceleration. Hope this helped!
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