B. most fuel sources create environmental change (the process of making the efficient engine will still create environmental damage)
Answer:
In this phase, the detailed user documentation is created that highlights how to use the system and how to troubleshoot issues or problems.
Explanation:
its all i got sorry but hope it helps a lil
Answer:
- Light is bounced back at same angle (Classical Reflection)
- Light penetrates medium at different angle due to different material densities (Refraction)
Light bounces at different angles in periodic grid (Reflected Diffraction)
Light enters medium at different angles through a grid (Transmission Diffraction)
- Light EMF field looses one axis component (Polarized filter)
Explanation:
Reflection is a phenomenon in which waves (light included) bounce back from an obstacle at the same angle of incidence
Refraction is the change in the angle of a wave as it enters the interface of two media. The change in angle is due to the difference in the densities of the two media.
Reflected diffraction occurs when an optical component with a periodic grid, splits, and diffracts light into several beams travelling in different directions. The light light bounces at an angle in the periodic grid.
Transmission diffraction is dispersion a beam of various wavelengths into a spectrum of associated lines due to the principle of diffraction. In this type of diffraction, light enters medium at different angles through a grid.
Polarized filters removes one field from the incidence electromagnetic wave like light, leaving it to vibrate in only one plane.
Answer:
Required Diameter = 302.65 inches
Explanation:
We are given;
Allowable tensile stress = 60 ksi
Weight of tensile load = 24,000 lb
Elongation = 0.05 in
Original length = 18 in
We'll need to check the diameters under stress and strain.
Now, we know that the formula for stress is;
Stress = Force/Area
Thus,
Area = Force/stress
So for this stress, area required is;
A_req = 24000/60 = 4000 in²
So let's find the required diameter here.
Area = πd²/4
So, 4000 = πd²/4
(4000 x 4)/π = d²
d² = 5092.96
Required diameter here is;
d = √5092.96
d = 71.36 in
For Strain;
Formula for strain is;
Strain = stress/E
We are given E = 120 ksi
stress = P/A = 24,000/A
strain = elongation/original length = 0.05/18 = 0.00278
Thus;
0.00278 = P/(A•E)
0.00278 = 24000/(120 x A)
Making A the subject to obtain;
A = 24000/(120 x 0.00278)
A_required = 71942 in²
Area = πd²/4
So, 71942 = πd²/4
(71942 x 4)/π = d²
d² = 91599.4
Required diameter here is;
d = √91599.4
d = 302.65 in
The larger diameter is 302.65 inchesand it's therefore the required one.
