3 years ago

What are the three categories of adult development?

Physics

1 answer:

andreev551 [17]3 years ago

5 0

Physical development , Cognitive Development , psychosocial development I think!

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A mover brings a box up the stairs in 10 seconds. If he applied a force of 20 N over a distance 10 m on the box, calculate the p

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20 Watts

Explanation:

Work = force × distance

W = (20 N) (10 m)

W = 200 Joules

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3 years ago

Which bulbs would be on and or off if :

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If the spring constant is doubled , what value does the period have for a mass on a spring?

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Answer:

D. The period would decrease by sqrt (2)

Explanation:

The period of a mass-spring system is given by:

$T=2\pi \sqrt{\frac{m}{k}}$

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k' = 2k

So the new period will be

$T'=2\pi \sqrt{\frac{m}{(2k)}}=\frac{1}{\sqrt{2}}(2\pi \sqrt{\frac{m}{k}})=\frac{T}{\sqrt{2}}$

So the correct answer is

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Answer:

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