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RSB [31]
3 years ago
5

In a coal-fired power plant, after the steam has been used to turn the turbine to power the generator, it goes through a condens

er. What’s happening in this process?
A.a phase change from a liquid togas
B.a phase change from gas to liquid
C.an energy change from kinetic energy to potential energy
D.an energy change from heat energy to kinetic energy

Suppose you cut an apple into 4 slices and then eat it. Your body digests it and uses the energy from the apple to help your body grow. Pick the correct physical and chemical changes from the following list
A.physical changes = cutting the apple; chemical changes = digesting the apple, your body growing
B.physical changes = cutting the apple, your body growing; chemical changes = digesting the apple
C.physical changes = body growing; chemical changes = digesting and cutting the apple
D.physical changes = digesting the apple; chemical changes = your body growing

Suppose you have a gas under 2 atm of pressure and taking up 0.5 m3 of volume. If you compress the gas so that it takes up 0.1 m3 of volume, what is the new pressure of the gas?

When coal is placed into a burner, what type of energy is being supplied to the burner?
A.light
B.nuclear
C.chemical

What is chemical energy?
A.the form of energy that we perceive with our eyes
B.the energy of motio
C.the energy that does work through chemical reactions


In a coal-burning power plant, a condenser is used to cool down the steam and convert it back to liquid water.
true
false

A windmill converts the chemical energy of the wind to nuclear energy at a wind power plant.
true
false
Physics
2 answers:
Murljashka [212]3 years ago
8 0

Answer:

give me theze points

Explanation:

atroni [7]3 years ago
5 0

Answer:

A B C B T F

Explanation:

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a 2100-kg car drives with a speed of 18 m/s onb a flat road around a curve that has a radius of curvature of 83m. The coefficien
Law Incorporation [45]

Answer:

<u>The magnitude of the friction force is 8197.60 N</u>

Explanation:

Using the definition of the centripetal force we have:

\Sigma F=ma_{c}=m\frac{v^{2}}{R}

Where:

  • m is the mass of the car
  • v is the speed
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Now, the force acting in the motion is just the friction force, so we have:

F_{f}=m\frac{v^{2}}{R}

F_{f}=2100\frac{18^{2}}{83}

F_{f}=8197.60 \: N

<u>Therefore the magnitude of the friction force is 8197.60 N</u>

I hope it helps you!

7 0
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What is the potential energy of a 2-kilogram potted plant that is on a 1 meter-high plant stand?
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Hunter is in lab. He clears a spot on his lab bench to start working. He also puts his lab coat and goggles on. He then identifi
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