3 years ago

Reducing waste and recycling things are ways to conserve energy. True false

Physics

2 answers:

Leya [2.2K]3 years ago

6 0

I think the correct answer is true :)

nydimaria [60]3 years ago

5 0

True b/c we conserve energy by not using energy to make new materials because we have those available because we recycled

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Rama09 [41]

Answer:

Ф = 239.73 rad

Explanation:

α = 12 + 15×t

W = ∫α×dt

= ∫(12 + 5×t)×dt

= 12×t + 2.5×t^2

then:

Ф = ∫W×dt

= ∫(12×t + 2.5×t^2)dt

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Ф = 6×(4.88)^2 + 5/6×(4.88)^3

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A mass of 100 g stretches a spring 5 cm. If the mass is set in motion from its equilibrium position with a downward velocity of

Rudiy27

Answer:

Explanation:

Given

mass of spring $m=100\ gm$

extension in spring $x=5\ cm$

downward velocity $v=70\ cm/s$

Position in undamped free vibration is given by

$u(t)=A\cos \omega _0t+B\sin \omega _0t$

where $\omega _0^2=\frac{k}{m}$

also $\frac{k}{m}=\frac{g}{L}$

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it is given

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substituting values we get

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$70=14B$

$B=\frac{10}{2}$

$B=5$

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Explanation:

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