Answer:
V = 42187 m/s = 42.18 km/s
Explanation:
given data:
mass of sun is ![= 2\times 10^{30} kg](https://tex.z-dn.net/?f=%3D%202%5Ctimes%2010%5E%7B30%7D%20kg%20)
radius of earth orbit is ![1.5\times 10^{11} m](https://tex.z-dn.net/?f=1.5%5Ctimes%2010%5E%7B11%7D%20m)
minimum speed can be determined by using following formula
}
where G is ![\times 10^{-11}](https://tex.z-dn.net/?f=%5Ctimes%2010%5E%7B-11%7D)
Plugging all value to get desired value
![V =(\frac{2\times 6.674 \times 10^{-11}2\times 10^{30}}{1.5\times 10^{11}})^{1/2}](https://tex.z-dn.net/?f=V%20%20%3D%28%5Cfrac%7B2%5Ctimes%206.674%20%5Ctimes%2010%5E%7B-11%7D2%5Ctimes%2010%5E%7B30%7D%7D%7B1.5%5Ctimes%2010%5E%7B11%7D%7D%29%5E%7B1%2F2%7D)
V = 42187 m/s = 42.18 km/s
Answer:
A: It decreased trade because soldiers no longer protected the oases.
I took it on E2020. I hope I've helped. If you need further explanation, please comment below.
Density = mass / volume
So density =567.5/50 = 11.35 g/cm3.
The SI unit of energy is the Joule .
Any kind of energy ... electrical, mechanical, nuclear, solar,
wind etc. It's easy to change from one form to another ... we
do it every day ... and they all have the same unit.
Answer:
The distance of the runners from the flag pole is 1.28 miles west of the flagpole
Explanation:
Both the runners will meet at the same time = t
Distance they will cover together = 7 + 1 = 8 miles
Let speed of runner A = v₁ = 5 mph
Let speed of runner B = v₂ = 2 mph
Distance = Speed × Time
v₁t+v₂t = 8
![5t+2t=8\\\Rightarrow 7t=8\\\Rightarrow t=\frac{8}{7}\ hours](https://tex.z-dn.net/?f=5t%2B2t%3D8%5C%5C%5CRightarrow%207t%3D8%5C%5C%5CRightarrow%20t%3D%5Cfrac%7B8%7D%7B7%7D%5C%20hours)
Distance covered by runner A = v₁t = 5× (8/7) = 5.71 miles
Distance of runner A from flagpole = 7-5.71 = 1.28
The distance of the runners from the flag pole is 1.28 miles west of the flagpole.