Answer:
h₍₁₎ = 495,1 meters
h₍₂₎ = 480,4 m
h₍₃₎ = 455,9 m
...
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Explanation:
The exercise is "free fall". t = ![\sqrt{\frac{2h}{g} }](https://tex.z-dn.net/?f=%5Csqrt%7B%5Cfrac%7B2h%7D%7Bg%7D%20%7D)
Solving with this formula you find the time it takes for the stone to reach the ground (T) = 102,04 s
The heights (h) according to his time (t) are found according to the formula:
h(t) = 500 - 1/2 * g * t²
Remplacing "t" with the desired time.
Find the volume of the bottom and top separately and then add them.
Cylinder volume is the area of the bottom times the height
(22/7)(5^2)•175=13750 ft^3
The volume of a sphere is
V=(4/3)(22/7)r^3
where r is the radius. Here that's also 5 since it fits on the cylinder.
Also we only want half the sphere so use
V=(2/3)(22/7)•5^3=261.9 ft^3
Which we round upto 262.
Now add the parts together
13750+262=14,012 ft^3
Answer:
cells
Explanation:
they are the smallest living organisms
The acceleration of the car will be needed in order to calculate the time. It is important to consider that the final speed is equal to zero:
![v^2 = v_0^2 + 2ad\ \to\ a = \frac{-v_0^2}{2d} = -\frac{21.8^2\ m^2/s^2}{2\cdot 99\ m} = -2.4\frac{m}{s^2}](https://tex.z-dn.net/?f=v%5E2%20%3D%20v_0%5E2%20%2B%202ad%5C%20%5Cto%5C%20a%20%3D%20%5Cfrac%7B-v_0%5E2%7D%7B2d%7D%20%3D%20-%5Cfrac%7B21.8%5E2%5C%20m%5E2%2Fs%5E2%7D%7B2%5Ccdot%2099%5C%20m%7D%20%3D%20-2.4%5Cfrac%7Bm%7D%7Bs%5E2%7D)
We can clear time in the speed equation:
![v = v_0 + at\ \to\ t = \frac{-v_0}{a} = \frac{-21.8\ m/s}{-2.4\ m/s^2} = \bf 9.08\ s](https://tex.z-dn.net/?f=v%20%3D%20v_0%20%2B%20at%5C%20%5Cto%5C%20t%20%3D%20%5Cfrac%7B-v_0%7D%7Ba%7D%20%3D%20%5Cfrac%7B-21.8%5C%20m%2Fs%7D%7B-2.4%5C%20m%2Fs%5E2%7D%20%3D%20%5Cbf%209.08%5C%20s)
If you find some mistake in my English, please tell me know.
Answer:
A lot of the earth oxygen comes from the ocean around 50%-80%
Explanation: