7291.2! I'm for sure this is the right answer.
Efficiency η of a Carnot engine is defined to be:
<span>η = 1 - Tc / Th = (Th - Tc) / Th </span>
<span>where </span>
<span>Tc is the absolute temperature of the cold reservoir, and </span>
<span>Th is the absolute temperature of the hot reservoir. </span>
<span>In this case, given is η=22% and Th - Tc = 75K </span>
<span>Notice that although temperature difference is given in °C it has same numerical value in Kelvins because magnitude of the degree Celsius is exactly equal to that of the Kelvin (the difference between two scales is only in their starting points). </span>
<span>Th = (Th - Tc) / η </span>
<span>Th = 75 / 0.22 = 341 K (rounded to closest number) </span>
<span>Tc = Th - 75 = 266 K </span>
<span>Lower temperature is Tc = 266 K </span>
<span>Higher temperature is Th = 341 K</span>
Answer:
![\boxed {\boxed {\sf 2.40 \ meters}}](https://tex.z-dn.net/?f=%5Cboxed%20%7B%5Cboxed%20%7B%5Csf%202.40%20%5C%20meters%7D%7D)
Explanation:
Work is the product of force and distance, so the formula is:
![W= F \times d](https://tex.z-dn.net/?f=W%3D%20F%20%5Ctimes%20d)
The work is 6.00 Joules, but
- 1 Joule (J) is equal to 1 Newton meter (N*m).
- Therefore, the work of 6.00 J is equal to 6.00 N*m
The force is 2.50 Newtons.
The known values are:
Substitute the values into the formula.
![6.00 \ N*m= 2.50 \ N *d](https://tex.z-dn.net/?f=6.00%20%5C%20N%2Am%3D%202.50%20%5C%20N%20%2Ad)
We are solving for distance, so we must isolate the variable, d. It is being multiplied by 2.50 Newtons and the inverse of multiplication is division. Divide both sides by 2.50 N.
![\frac {6.00 \ N*m}{2.50 \ N}=\frac{2.50 \ N * d}{2.50 \ N}](https://tex.z-dn.net/?f=%5Cfrac%20%7B6.00%20%5C%20N%2Am%7D%7B2.50%20%5C%20N%7D%3D%5Cfrac%7B2.50%20%5C%20N%20%2A%20d%7D%7B2.50%20%5C%20N%7D)
![\frac {6.00 \ N*m}{2.50 \ N}=d](https://tex.z-dn.net/?f=%5Cfrac%20%7B6.00%20%5C%20N%2Am%7D%7B2.50%20%5C%20N%7D%3Dd)
The units of Newtons cancel out.
![\frac {6.00 m}{2.50 }=d](https://tex.z-dn.net/?f=%5Cfrac%20%7B6.00%20m%7D%7B2.50%20%7D%3Dd)
![2.40 \ m =d](https://tex.z-dn.net/?f=2.40%20%5C%20m%20%3Dd)
The force was applied to the rock over a distance of <u>2.40 meters</u> and choice <u>C</u> is correct.
Answer:
Subcategories: Ice field
Explanation:
Glacier ice is blue because the red (long wavelengths) part of white light is absorbed by ice and the blue (short wavelengths) light is transmitted and scattered. The longer the path light travels in ice, the more blue it appears.
The channel is whatever was used to carry information from
one place to another, or from one person to another.
In this scenario, the channel is e-mail.