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marusya05 [52]
2 years ago
8

But this on your own sentences please

Biology
1 answer:
alina1380 [7]2 years ago
3 0
Since hydropower is powered by water, it’s a good fuel source. It will not contaminate the air like power plants that release fossil fuels, for example coal and oil. It does not rely on international fuel sources and lets each state make their own energy.
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To test how fertilizer affects tomato plants, a farmer divided a field of young tomato plants into 10 plots of equal size. The f
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c

Explanation:

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Why do you think heart disease is so prevalent in the United States? How could heart
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Explanation: hope this helps :)

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2 years ago
Gold has a specific heat of 0.129 J/(g×°C). How many joules of heat energy are required to raise the temperature of 15 grams of
Elodia [21]

Answer:

\boxed {\boxed {\sf 121.905 \ J  }}

Explanation:

We are asked to find the energy given mass, specific heat, and change in temperature. Therefore, we must use this formula;

q= mc \Delta T

The mass is 15 grams and the specific heat is 0.129 J/(g×°C). Let's calculate the change in temperature.

  • ΔT= final temperature - initial temperature
  • ΔT= 85 °C- 22°C = 63°C

Now we know all the values:

m= 15 \ g \ \\c= 0.129 \ J / (g* \textdegree C) \\\Delta T= 63 \ \textdegree C

Substitue the values into the formula.

q= (15 \ g)( 0.129 \ J / (g* \textdegree C)) ( 63 \ \textdegree C)

Multiply the first numbers together. The grams will cancel.

q= (1.935 \ J/ \textdegree C) ( 63 \ \textdegree C)

Multiply again, this time the degrees Celsius cancels.

q= 121.905 \ J

<u>121.905 Joules</u> are required.

5 0
2 years ago
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11. Which type of cells does NOT contain a nucleus?
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A, a prokaryotic cell

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</span>Insulin <span>is a </span>peptide hormone<span> produced by </span>beta cells<span> of the </span><span>pancreatic islets.</span>
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