2 years ago

Which can occur during a physical change? (SELECT ALL THAT APPLY!.)

Physics

1 answer:

olya-2409 [2.1K]2 years ago

8 0

Answer:

C, B, and D are ones i think i know that can occur during a physical change

Explanation:

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3 years ago

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3 years ago

A) 1.2-kg ball is hanging from the end of a rope. The rope hangs at an angle 20° from the vertical when a 19 m/s horizontal wind

Marat540 [252]

Answer:

Part a)

$F_v = 4.28 N$

Part B)

$L = 1.02 m$

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Explanation:

Part A)

As we know that ball is hanging from the top and its angle with the vertical is 20 degree

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$Tcos\theta = mg$

$T sin\theta = F_v$

$\frac{F_v}{mg} = tan\theta$

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Part B)

Here we can use energy theorem to find the distance that it will move

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$(-(0.37)m(9.81) cos15 + m(9.81) sin15)L = - \frac{1}{2}m(1.4)^2$

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Part C)

At terminal speed condition we know that

$F_v = mg$

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3 years ago

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