PHYSICS HIGH SCHOOL

What are geothermal heat pumps used for?a. Cooling and heating buildings
b. Cooling buildings
c. Heating buildings
d. Heating water for using in homes

Answers

Answer 1
Answer: Heat pumps are also known as refrigeration units for heating and cooling homes by taking heat from air outside in the winter time and then reversed to take heat out of the inside of a home in the summertime. The Geothermal heat pumps take heat from the ground by way of buried pipes deep in ground with chemicals such as water and glycol or similar and transfers that heat into homes in the winter time.
Heating buildings

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(20 POINTS!) A piece of copper (c = 0.385 ) undergoing a temperature change from 150°C to 225°C absorbs 3,500 joules of energy. What is the mass of the piece of copper? Express the answer to the nearest whole number.

Answers

The mass of the piece of copper is equal to 121.2 g when its specific heat capacity is 0.385 J/g°C.

What is the specific heat capacity?

The specific heat capacity can be described as the amount of heat required to raise the temperature in one kilogram of a substance by one-degree Celcius.

The temperature of the material will change whenever the heat is absorbed or lost by it.

Q = mCΔT

Given, the amount of energy transferred, Q = 3500 J

The change in the temperature = 225 - 150 = 75 °C

The specific heat capacity of the copper, C = 0.385 J/g°C

The mass of the piece of copper for the given change in temperatures can be calculated as:

3500 J = m × (0.385 J/g°C) × 75°C

m = 121.2 g

Therefore, the mass of the piece of copper is equal to 121.2 g.

Learn more about specific heat capacity, here:

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Answer:

121 on edge 23

Explanation:

Advantages and disadvantages of resonance

Answers

Advantage: Having hopefully a good price

Explain which has a greater inertia - a speeding car or jet plane sitting on a runway?

Answers

Explanation:

Inertia is related to only mass, not speed.

Since a jet plane has more mass than a car, it has more inertia.

Is a marble rolling across the table kinetic energy

Answers

Not exactly.  A marble rolling across the table is a marble,
and it has mass, weight, momentum, and kinetic energy.

Which geochemical cycle involves mantle convection

Answers

the answer is rock cycle

Light waves will bend when passing from one transparent substance to another unless: a. Constructive interference occurs/ b. Destructive interference occurs/ c. The light hits the substance at an angle of 60 degrees/ d. The light hits at an angle of 90 degrees

Answers

The correct answer is (d.) The light hits at an angle of 90 degrees. The light waves will bend whenever passing from one transparent substance to another unless the light is hitting at an angle of 90 degrees.

the answer is d.................
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a 4768-kg roller coaster train full of riders approaches the loading dock at a speed of 17.1 m/s. It is abruptly decelerated to a speed of 2.2 m/s over a distance of 13.6m. Determine the magnitude of the restraining force that acts upon the roller coaster cars.