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Anna35 [415]
3 years ago
14

HELP ASAP ANSWER ALL OF THIS FOR 55 POINTS+BRAINLIST

Physics
2 answers:
Paladinen [302]3 years ago
6 0

Answer:

1. conduction

2. a convection current

3. Heat is always transferred from the object at the higher temperature to the object with the lower temperature

4. noooooo!Heat is always transferred from the object at the higher temperature to the object with the lower temperature

5.convection

6. Thermal radiation

7. convection again!

A. Conduction is the transfer of thermal energy through direct contact. Convection is the transfer of thermal energy through the movement of a liquid or gas.

B. Radiation is the transfer of thermal energy through thermal emission.

C. the heat required to raise the temperature of the unit mass of a given substance by a given amount

rusak2 [61]3 years ago
3 0

Answer:

Heat is transferred directly from one particle of matter to another by the process of conduction.

A circular flow of warmer fluid and cooler fluid is called convection

Heat is always transferred from conduction to radiation

radiation is the transfer of energy by electromagnetic waves.

Heat that is transferred by the movement of currents within a fluid is called conduction

The only form of heat transfer that does not require matter is specific heat

Water bubbles up through a hot spring at Yellowstone National Park. What method of heat transfer is this?

convection

Explanation:

I hope that this helps, I kinda rushed on it

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A 1 200-kg car traveling initially at vCi 5 25.0 m/s in an easterly direction crashes into the back of a 9 000-kg truck moving i
sukhopar [10]

Answer:

The velocity of the truck after the collision is 20.93 m/s

Explanation:

It is given that,

Mass of car, m₁ = 1200 kg

Initial velocity of the car, v_{Ci}=25\ m/s

Mass of truck, m₂ = 9000 kg

Initial velocity of the truck, v_{Ti}=20\ m/s

After the collision, velocity of the car, v_{Cf}=18\ m/s

Let v is the velocity of the truck immediately after the collision. The momentum of the system remains conversed.

initial\ momentum=final\ momentum

1200\ kg\times 25\ m/s+9000\ kg\times 20\ m/s=1200\ kg\times 18+9000\ kg\times v

210000-21600=9000\ kg\times v

v=20.93\ m/s

So, the velocity of the truck after the collision is 20.93 m/s. Hence, this is the required solution.

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3 years ago
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