Answer:
5. dispersion
6. 49.8°
Explanation:
5. Dispersion is the name given to the phenomenon of light of different wavelengths being bent differently. A rainbow is the result of light from a point source (the sun) being spread out by wavelength (color), a nice example of dispersion.
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6. n = 1.31 is the ratio of the sine of the angle of refraction to the sine of the angle of incidence (for light passing to a medium of n = 1). When the angle of refraction is 90°, the angle of incidence is the "critical angle." So, ...
sin(90°)/sin(critical) = 1.31
critical angle = arcsin(1/1.31) ≈ 49.8°
Answer:
Given,
mass of man = 100 N = 10 kg
height = h = 25m
since the man does not move anything with his force, work done by him is zero
work done on the man = gain in potential energy
P.E=mgh
P.E=10×9.8×25
P.E=2.45KJ
Explanation:
so, potential energy gained by man is 2.45 KJ
Answer:
(a) 
(b) 
: From the air to the surroundings.
Explanation:
Hello,
(a) In this case, we can compute the area at the entrance by firstly computing the inlet volumetric flow:
Then, with the velocity, we compute the area:
(b) In this case, via the following energy balance for the nozzle:
We can easily compute the change in the enthalpy by using the given Cp and neglecting the work (no done work):
Finally, the heat turns out:
![Q=-348.795kW+\frac{1}{2}*2.3\frac{kg}{s}*[(460\frac{m}{s})^2 -(3\frac{m}{s})^2 ]\\\\Q=-348.795kW+243329.65W*\frac{1kW}{1000W}\\ \\Q=-105.5kW](https://tex.z-dn.net/?f=Q%3D-348.795kW%2B%5Cfrac%7B1%7D%7B2%7D%2A2.3%5Cfrac%7Bkg%7D%7Bs%7D%2A%5B%28460%5Cfrac%7Bm%7D%7Bs%7D%29%5E2%20%20%20-%283%5Cfrac%7Bm%7D%7Bs%7D%29%5E2%20%20%5D%5C%5C%5C%5CQ%3D-348.795kW%2B243329.65W%2A%5Cfrac%7B1kW%7D%7B1000W%7D%5C%5C%20%5C%5CQ%3D-105.5kW)
Such sign, means the heat is being transferred from the air to the surroundings.
Regards.
The graph shows the production of Fe, from the graph that it increases rapidly and then slowly increases.<span>The answer is a! (:
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The answer is A because the healthiest option out of all of those selections is the fruit smoothie.
