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ANTONII [103]
3 years ago
10

If you know any of them, please help!!!!!!

Physics
1 answer:
Anna [14]3 years ago
5 0

I believe the answer for 1) is

PEgrav = mass • g • height

PEgrav = m *• g • h

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What is the formula for mechanical advantage?
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Answer:

A. MA=force output/force input

Explanation:

mechanical advantage is the ratio of the load to the effort

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A 0.10 newton spring toy with a spring constant of 160 newtons per meter is compressed 0.05 meter before it is launched. When re
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Answer:

(1) V = 0.2 J (2) 0.05J

Explanation:

Solution

Given that:

K = 160 N/m

x = 0.05 m

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Thus,

V = 1/2 kx² = 0.5 * 160 * (0.05)²

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(2)Now, we solve for how much of the internal energy is produced as the toy springs up to its maximum height.

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A block and tackle is used to lift an automobile engine that weighs 1800 N. The person exerts a force of 300 N to lift the engin
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1800/300 = 6ropes

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A silver tea spoon is placed in a cup filled with hot tea. After some time, the exposed end of the spoon becomes hot even withou
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2 years ago
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The resistance of the piece of wire is
R= \frac{\rho L}{A}
where
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A=0.13 cm^2 = 0.13 \cdot 10^{-4} m^2 is the cross sectional area of the wire
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Then, by using Ohm's law, we find the potential difference between the two points of the wire:
V=IR=(51 A)(6.6 \cdot 10^{-5} \Omega )=3.4 \cdot 10^{-3} V
7 0
3 years ago
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