The amount of work that has been done on the projectile by air friction is 7,569.2 J.
<h3>
Work done by air friction on the projectile</h3>
The work done by air friction on the projectile is calculated as follows;
W = ΔK.E
W = ¹/₂mvf² - ¹/₂mv₀²
where;
- vf is the final velocity = 85 m/s
- v₀ is the initial vertical velocity = 100 x sin(20) = 34.2 m/s
W = ¹/₂m(vf² - v₀²)
W = ¹/₂ x 2.5 (85² - 34.2²)
W = 7,569.2 J
Thus, the amount of work that has been done on the projectile by air friction is 7,569.2 J.
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Answer:
t= 1.34x10power 6 sec
Explanation:
l = lo ( 1+b / 1+b /)1/2 where L = wave length
(700mn/589mm)2 = 1.41 = 1+b/1-b
1.41-1.41b = 1+b
0.41= 2.41b
b = 0.17
v=5.1 x 10 7 m/s
v = at
t = a/v = 5.1 x 10power 7 m/s / 38m/s2= 1.34*10 power 6
t= 1.34x10power 6 sec
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The Earth's energy does not come from eating a balanced diet,
or from ninja turtles, or from getting sleep and exercise.
There are no hamsters running on a treadmill inside the Earth.
God didn't wind up a big spring to operate the Earth.
The Sun provides, and has always provided, almost all of the energy
used on Earth. It was the energy that got stored in dead dinosaurs
to make gas and oil, and it's the energy that makes plants grow, and
gets stored in them so we can get the energy by eating the plants.
Answer:
Shear stress on upper plate = 837.4N/m2
Shear stress when the linear velocity profile were assumed = 418.7N/m2
Explanation:
The detailed and step by step calculation and appropriate differentiation to get the shear stress is as shown in the attachment.
Other instruments can measure the height and thickness of clouds and how much water they contain. Space technology has helped us understand how Earth works and how we can help keep it healthy. It can also help us learn more about something bigger than ourselves, and maybe, build the right equipment to explore it.