The answer would be a.
a chemical change is a change to the chemical makeup of a substance so if the bonds are unchanged it would be a characteristic of a physical change
Answer:
![d=2.38*10^{13}m](https://tex.z-dn.net/?f=d%3D2.38%2A10%5E%7B13%7Dm)
Explanation:
We know the mass of the hole, so we define as,
kg
For which centripetal force is equal to gravitational force
![\frac{mv^2}{r}=\frac{GMm}{d^2}](https://tex.z-dn.net/?f=%5Cfrac%7Bmv%5E2%7D%7Br%7D%3D%5Cfrac%7BGMm%7D%7Bd%5E2%7D)
Angular velocity is equal to v/r,
![w^2r=\frac{6.67*10^{-11}*8.5*10^{36}}{d^2}](https://tex.z-dn.net/?f=w%5E2r%3D%5Cfrac%7B6.67%2A10%5E%7B-11%7D%2A8.5%2A10%5E%7B36%7D%7D%7Bd%5E2%7D)
As r=1 and w=1, we clear to d,
m
![d=2.38*10^{13}m](https://tex.z-dn.net/?f=d%3D2.38%2A10%5E%7B13%7Dm)
Force of gravity =mass*graviational acceleration
gravitational acceleration=g=9.81
mass=Density*Volume=.08*7840
force of gravity= .08*7840*9.81
gg
Answer:
1. 18.5m/s
2. 17.5 m
3. 0 at its highest point
4. Direction is downwards
Explanation:
1. This egg is thrown vertically from a height
Yo = 0. This egg then falls to the point y = -30.0 at t = 5seconds
Y-Yo = V0t - 1/2gt²
-30-0 = V0(5)-1/2(9.8)(5²)
-30 = 5v0 - 4.9x25
-30 = 5V0 - 122.5
-30+122.4 = 5v0
V0 = 92.5/5
= 18.5m/s
<em><u>this </u></em><em><u>is </u></em><em><u>the </u></em><em><u>initial</u></em><em><u> </u></em><em><u>speed</u></em><em><u> of</u></em><em><u> the</u></em><em><u> </u></em><em><u>egg</u></em>
2. When the egg is at a maximum height it would have a velocity equal to 0
V² = V0² - 2*g*y
V = 0, V0 = 18.5, g = 9.8
0 = 18.5²-2x9.8*y
342.25-19.6y = 0
342.25 = 19.6y
Divide through by 19.6
Y = 342.25/19.6
Y = 17.5m
<em><u>this value is how high it rises above starting point</u></em>
3.
The magnitude of velocity is = 0 at its highest point
4.
This egg falls under gravity. Therefore the acceleration due to gravity has a constant magnitude and direction. Magnitude = 9.8m/s and it's direction is downwards.
5. Please check attachment for graph