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krek1111 [17]
3 years ago
10

A piece of solid copper, at 10oC, is dropped into a graduated cylinder of 100°C water. Which statement BEST describes the change

in heat energy in this system?
A) Both water and copper temperatures decrease.
B) The temperatures of both substances remain constant.
C) Water temperature increases; copper temperature decreases.
D) Water temperature decreases; copper temperature increases.
Physics
2 answers:
goblinko [34]3 years ago
7 0

Answer:

D

Explanation:

Water temperature decreases; copper temperature increases. Heat energy moves from high to low. Heat energy will be transferred from the water to the copper.

enot [183]3 years ago
6 0

Answer:

D

Explanation:

just took the test

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Julli [10]

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The paper does not catch fire when wrapped around aluminium pipe because aluminium absorbs the heat, so paper does not attain its ignition temperature.

Explanation:

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What are flavonoids responsible ?
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Answer:

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6 0
3 years ago
One of the many by products of uranium is radioactive plutonium, which has a half life of approximatley 25000 ytears. if some of
strojnjashka [21]

Answer:

0.9972 fraction of plutonium will remain after 100 years.

Explanation:

Half life of plutonium = t_{1/2}=25000 years

Let the initial mass of plutonium be = A_o

Mass of plutonium after time of 100 years = A

Decay constant for this process = \lambda =\frac{0.693}{t_{1/2}}

A=A_o\times e^{-\lambda t}

A=A_o\times e^{-\frac{0.693}{25000 years}\times 100 year}

A=A_o\times 0.9972

\frac{A}{A_o}=0.9972

0.9972 × 100 = 99.72 %

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8 0
3 years ago
Abby throws a ball straight up and times it. she sees that the ball goes by the top of a flagpole after 0.50 s and reaches the l
Arisa [49]
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Vf is the final speed which is equal to 0 on the topmost location of the ball.
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At 0.5 s,
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3 years ago
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Lynna [10]

Answer:

Water that contains a larger than normal amount of <em>magnesium</em> is still safe to drink.

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4 0
3 years ago
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