According to the Jefferson lab, "The scientific definition of work is: using a force to move an object a distance (when both the force and the motion of the object are in the same direction.)"
The average energy delivered to a surface is 7.5*10^6J.
To find the answer, we have to know about the poynting vector.
<h3>How to find the average energy delivered to a surface?</h3>
- Energy per time through a unit area perpendicular to the direction of propagation of EM wave is called poynting vector.
- We can write the expression of Poynting vector as,
where; E(avg) is the average energy of the EM wave, and c is the speed of light.
- We can rewrite the expression as per our defenition as,
- Thus, the value of average energy will be,
Thus, we can conclude that, the average energy delivered to a surface is 7.5*10^6J.
Learn more about the poynting vector here:
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Answer:
Glassy texture
Explanation:
The rocks that are characterized by the absence of structure, shape, and size are usually referred to as the glassy texture. These rocks are comprised of atoms that are randomly oriented. These rocks are lacking in crystals because of their faster rate of cooling. It cools so fast that it does not get a sufficient amount of time to form crystals. For example, Obsidian.
This glassy textured rocks are found in the igneous types of rocks that are formed due to the cooling of magma.
Answer:
she is going to be mad dude
We will start by finding the heat in state one through the thermal efficiency or efficiency of a thermal machine is a coefficient or dimensionless ratio calculated as the ratio of the energy produced (in an operating cycle) and the energy supplied to the machine. Mathematically it is the relationship between the work generated and the heat emanated.
So,
The total change of energy is equivalent to 4500J and this is equal by conservation of energy to the total change in heat. So:
Therefore the energy which is discharged to the lower temperature reservoir every cicle is 921.7J