Answer: a) Fd = 3.24 N/m
b) Q = 520 w/m
Explanation: please find the attached files for the solution
Answer:
2000-7000 * 6% = - 0,000126
Answer:
a. molecular interactions.
Explanation:
Conduction is thermal energy transfer by molecular interactions. Therefore, conduction involves the transfer of electric charge or thermal energy due to the movement of particles. When the conduction relates to electric charge, it is known as electrical conduction while when it relates to thermal energy, it is known as heat conduction.
In the process of heat conduction, thermal energy is usually transferred from fast moving particles to slow moving particles during the collision of these particles. Also, thermal energy is typically transferred between objects that has different degrees of temperature and materials (particles) that are directly in contact with each other but differ in their ability to accept or give up electrons.
Some examples of conductors include metal, steel, aluminum, copper, graphite, etc.
Hence, conduction is thermal energy transfer as a result of the movement of electrons and collision between the molecules of an object.
Explanation:
Which stroke in the four stroke cycle begins as the piston reaches BDC after combustion takes place?
Answer :Exhaust stroke is the waste gasses discharging process into the atmosphere after the combustion stroke. This step takes place after the piston reaches the BDC at the end of the combustion stroke. When the piston reaches BDC, the piston will definitely move back to TDC.
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Answer:
Lets take heat transfer take place from 500 K reservoir to device and from device to 300 K reservoir.
From the energy conservation we can say that
-----1
For reversible process
----2
By solving above two equation
But here sign come negative it means that
heat transfer take place from device to 500 K reservoir and from 300 K reservoir to device.