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2 years ago

Muscles convert chemical energy into A) light energy. B) nuclear energy. C) mechanical energy. D) electromagnetic energy.

Physics

2 answers:

hoa [83]2 years ago

7 0

The muscles convert the stored chemical energy into mechanical energy

pshichka [43]2 years ago

3 0

Answer:

The correct answer would be C) mechanical energy.

The muscles harness the energy from the food that is, the chemical energy and convert it into the ATP (adenosine triphosphate) which is also a chemical energy.

The ATP are then used by the muscles as the source of energy for the movements such as locomotion that is, mechanical energy.

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How many seconds are there in 13 hours?

Zina [86]

Answer:

46,800 seconds. I hope this helps

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2 years ago

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A piston-cylinder device initially contains 0.3 kg of nitrogen gas at 160 kPa and 140oC. The nitrogen is now expanded isothermal

irakobra [83]

Answer:

<h2>Work done by the gas is given as</h2><h2> $W = 1.72 \times 10^4 J$ </h2>

Explanation:

As we know that the process is isothermal so here work done is given as

$W = nRTln(\frac{P_1}{P_2})$

here we know that

$n = \frac{w}{M}$

$n = \frac{300}{28} = 10.7 moles$

now we have

$W = 10.7 (8.31)(273 + 140) ln(\frac{160}{100})$

so we have

$W = 1.72 \times 10^4 J$

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2 years ago

Why do sound waves travel around corners better than light waves? Sound<br>waves<br>

Lesechka [4]

Answer:

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2 years ago

it takes 687 days for the planet mars to revolve around the sun once. how many earth days it takes mars to revolve around the su

mihalych1998 [28]

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2 years ago

A cook puts 1.90 g of water in a 2.00 L pressure cooker that is then warmed from the kitchen temperature of 20°C to 111°C. What

sergey [27]

Answer:

P= 168258.30696 Pa

Explanation:

Given that

Mass of water vapor m = 19.00 g

Volume of water vapor V = 2.00 L

$=2.00\times10^{-3}m^3$

Temperature of water vapor is T = 111°C

= 384K

Molar mass of water is M = 18.0148 g/mol

Number of moles are

n = m/M

= (1.90 g)/(18.0148 g/mol)

= 0.1054 mol

Pressure inside the container is

P= nRT/V

$P=\frac{(0.1054)(8.314472)(384)}{(2.00\times10^{-3})}$

P= 168258.30696 Pa

3 0

3 years ago