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vagabundo [1.1K]
3 years ago
5

Is it true that mproving overall fitness may not be possible for people who have physical limitations.

Physics
1 answer:
OleMash [197]3 years ago
8 0
That's not true people that have a broken leg use crutches and the constant lifting of their own body weight will help them gain muscle 
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To stretch a certain nonlinear spring by an amount x requires a force F given by F = 40 x − 6 x 2 , where F is in Newtons and x
strojnjashka [21]

Answer:

64 J

Explanation:

The potential energy change of the spring ∆U = -W where W = work done by force, F.

Now W = ∫F.dx

So, ∆U = - ∫F.dx = - ∫Fdxcos180 (since the spring force and extension are in opposite directions)

∆U = - ∫-Fdx

=  ∫F.dx

Since F = 40x - 6x² and x moves from x = 0 to x = 2 m, we integrate thus, ∆U =  ∫₀²F.dx

=  ∫₀²(40x - 6x²).dx

=  ∫₀²(40xdx - 6x²dx)

=  ∫₀²(40x²/2 - 6x³/3)

=  ∫₀²(20x² - 2x³)

= [20x² - 2x³]₀²

= [(20(2)² - 2(2)³) - (20(0)² - 2(0)³)

= [(20(4) - 2(8)) - (0 - 0))

= [80 - 16 - 0]

= 64 J

5 0
3 years ago
In terms of the sequence of the scientific method, what is the immediate purpose of doing an experiment? A. asking the question.
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In terms of the scientific method, the immediate purpose of doing an experiment is gathering data. You cannot draw conclusions or form a proper hypothesis without some sort of basis and data.
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Which statement best summarizes the theory of evolution by natural selection?
prisoha [69]

Answer:

c is the one that makes the most sense

Explanation:

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2 years ago
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Consider the following FBDs.FBDsAn elevator is suspended by a cable and moves uniformly upward. Which of the above free body dia
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The force of gravity F_g will act downwards.

Normal force F_N will act upwards equal to the force of gravity.

A force due to uniform acceleration F_a will act upwards to move the elevator upwards.

Thus, figure E is the correct answer.

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Officials in the House of Representatives serve __ terms.
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Officials in the House of Representives have are able to serve a 2 year term and there are no limits as to how many terms.
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