3 years ago

A student dips a strip of metal into a liquid. Which is evidence that only a physical change has occurred?

Physics

1 answer:

sattari [20]3 years ago

3 0

Answer:

PLS add the picture too.....

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How much force is needed to accelerate a 68 kilogram-skier at a rate of 1.2 m/sec^2?

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<span>Answer: Force = 81.6 N

Explanation:
According to Newton's Second law:
F = ma --- (1)

Where F = Force = ?
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Plug in the values in (1):
(1) => F = 68 * 1.2
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3 years ago

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Answer:

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Explanation:

$f_e = \frac{{q}^{2}k }{ {r}^{2} } \\ q = \sqrt{ \frac{f_e( {r}^{2} )}{k} } = \sqrt{ \frac{5.2(5 \times {10}^{ - 2} )^{2} }{9 \times {10}^{9} } } \\ q =\sqrt{ \frac{5.2(5 \times {10}^{ - 2} )^{2} }{9 \times {10}^{9} } } = \sqrt{ \frac{0.013}{9 \times {10}^{9} } } \\ q = 1.2 \times {10}^{ - 6}$

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2 years ago

The diagram shows movement of thermal energy. At bottom a fire has red curved lines labeled Y with arrowheads pointing upward to

Pepsi [2]

Answer:

X and Z

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3 years ago

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