Chemistry : asked on kenken2583
 29.09.2021

Why does the hood of a car heat up after the car has been running for a while

. 6

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Physics
Step-by-step answer
P Answered by Master

C)According to the second law of thermodynamics, not all energy from the burnt fuel is used to do work on the piston. It also produces heat which warms other parts of the car.  

Explanation:

A)According to the fourth law of thermodynamics, the temperature of the other parts of the car increases due to the coolant used for the engine.  

B)According to the first law of thermodynamics, the hood of the car heats up using heat from the surroundings in-order to achieve thermal equilibrium with the engine.  

C)According to the second law of thermodynamics, not all energy from the burnt fuel is used to do work on the piston. It also produces heat which warms other parts of the car.  

D)According to the third law of thermodynamics, the increase in the velocity of the car changes the entropy of the tires. To balance this change, the temperature of the other parts is increased.

Physics
Step-by-step answer
P Answered by Specialist

C)According to the second law of thermodynamics, not all energy from the burnt fuel is used to do work on the piston. It also produces heat which warms other parts of the car.  

Explanation:

A)According to the fourth law of thermodynamics, the temperature of the other parts of the car increases due to the coolant used for the engine.  

B)According to the first law of thermodynamics, the hood of the car heats up using heat from the surroundings in-order to achieve thermal equilibrium with the engine.  

C)According to the second law of thermodynamics, not all energy from the burnt fuel is used to do work on the piston. It also produces heat which warms other parts of the car.  

D)According to the third law of thermodynamics, the increase in the velocity of the car changes the entropy of the tires. To balance this change, the temperature of the other parts is increased.

Physics
Step-by-step answer
P Answered by PhD

The hood of a car heats up after the car has been running for a while because the engine gets heated up.

What causes this heat is the friction in the internal parts of the engine. The resistance due to the friction in the internal parts of the engine, heat energy is produced. Heating up off the car's engine is a serious issue. To control this heat, cooling system does its job.

A leak in the cooling system or a blockage in the cooling system are considered indirect causes of overheating.

The engine oil itself plays a part in cooling down the engine by lubricating the engine parts and reducing the friction.

Physics
Step-by-step answer
P Answered by PhD

The hood of a car heats up after the car has been running for a while because the engine gets heated up.

What causes this heat is the friction in the internal parts of the engine. The resistance due to the friction in the internal parts of the engine, heat energy is produced. Heating up off the car's engine is a serious issue. To control this heat, cooling system does its job.

A leak in the cooling system or a blockage in the cooling system are considered indirect causes of overheating.

The engine oil itself plays a part in cooling down the engine by lubricating the engine parts and reducing the friction.

StudenGPT
Step-by-step answer
P Answered by Studen AI
The description of Darry in paragraphs 21-22 primarily serves to:

b. emphasize how rational and tough-minded he is.

This is noted through several points made in the description including:

- "Darry is six-feet-two, and broad-shouldered and muscular,"
- "He’s got eyes that are like two pieces of pale blue-green ice. They’ve got a determined set to them, like the rest of him."
- "He looks older than twenty—tough, cool, and smart."
- "He doesn’t understand anything that is not plain hard fact. But he uses his head."

While other elements, like missing his parents (option a), Darry being cruel and unkind (option c), or drawing an unfavorable comparison between Darry and his dad (option d), might be subtly implied, they aren't the primary objective of these paragraphs.
The main focus remains on outlining Darry's rational, tough-minded character and the differences between him and his younger brother, Ponyboy.
StudenGPT
Step-by-step answer
P Answered by Studen AI
"How Arthur was chosen king" draws on the tension created in "How Theseus Lifted the Stone" by having Arthur successfully complete a challenging task or test to prove his worthiness and claim his rightful position. In both stories, there is a significant object (the sword in "How Arthur was chosen king" and the sandals and sword in "How Theseus Lifted the Stone") that can only be obtained by someone who possesses great strength or is destined for a special role.

In "How Theseus Lifted the Stone," Theseus attempts to lift the stone multiple times but fails, indicating that he is not yet ready or strong enough to claim his birthright. However, he perseveres and eventually becomes strong enough to lift the stone, demonstrating his growth and readiness to fulfill his destiny as a hero.

Similarly, in "How Arthur was chosen king," Arthur retrieves the sword from the stone, a task that no one else can accomplish. This act not only provides proof of his royal lineage but also symbolizes his strength and destiny as the rightful king of England. The tension arises from the inability of others to perform the task, highlighting Arthur's unique abilities and setting him apart as the chosen one.

In both stories, the tension lies in the anticipation of whether the protagonist will be able to overcome the challenge and fulfill their destiny. The parallel between Theseus and Arthur showcases the themes of destiny, heroism, and the journey towards self-discovery, resonating with the readers and creating suspense and excitement.

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