Surface mining is the method of removing the overburden parts of the earth which are the earth and rocks. It also involves removal and loading out of the coal, and then placing back the collected earth back into a surface once again. It's also a method that uses equipment or explosives.
That's the symbol used for a battery. Actually, it's <em>one cell of a battery</em>, and if there's more than one cell used in the circuit, then the same symbol is repeated in the diagram.
The longer line ... on the left side in this picture ... represents the positive ( + ) side of the cell. The short, fat line on the right is the negative side.
The statement "<span>The motion of a pendulum for which the maximum displacement from equilibrium does not change is an example of simple harmonic motion." is true.
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Answer:
Answer
The Final Quality of teh R-134a in the container is 0.5056
The Total Heat transfer is 
Explanation:
Explanation is in the following attachments
To the right, if you push something left the friction is to the right
