Answer:
Following are the solution to the given question:
Explanation:
For crashing speed, we can use energy conservation:
kinetic energy
potential energy
moon mass![= 7.36\times 10^{22} \ kg](https://tex.z-dn.net/?f=%3D%207.36%5Ctimes%2010%5E%7B22%7D%20%5C%20kg)
Radius
Calculating the mass drop for the leave:
![\to \frac{vo^2}{2} - \frac{GM}{1848000}\\\\ \to \frac{vc^2}{2} - \frac{GM}{1738000}](https://tex.z-dn.net/?f=%5Cto%20%5Cfrac%7Bvo%5E2%7D%7B2%7D%20-%20%5Cfrac%7BGM%7D%7B1848000%7D%5C%5C%5C%5C%20%5Cto%20%5Cfrac%7Bvc%5E2%7D%7B2%7D%20-%20%5Cfrac%7BGM%7D%7B1738000%7D)
Solve the value for
The approach is correct but misrepresented in replacing 180 km instead of 110 km.
YES IT IS if you add a zero to <span>Zeroes placed between other digits are always </span>significant; 4009 kg has foursignificant<span> digits. Zeroes placed after other digits but behind a decimal point are</span>significant<span>; 7.90 has three </span>significant<span> digits. Zeroes at the </span>end of a number<span> are</span>significant<span> only if they are behind a decimal point as in (c).</span>
That gives you the magnitude of velocity, but it doesn't handle
the directions that are involved.
Answer: The elevator must be accelerating.
Explanation:
As the tension force is opposing to the the force of gravity on the load which is hung vertically, and the tension force can adopt any value in order to comply with Newton's 2nd law, if the tension force is less than the force due to gravity, this means that all system is not in equilibrium, so it must be accelerating.
If we assume that the downward is the positive direction, we can write:
mg - T = ma
If T = 0.9 mg, ⇒ mg (1-0.9) =0.1 mg = m a ⇒a = 0.1 g , in downward direction.
Prior to the discovery and elaboration of Copernicus with the theory of heliocentricism, which states that the sun is the center of the universe and that the planets orbit around it in a circular manner. The theory of geocentrism was first published by another astronomer and philosopher, Ptolemy. As a custom in the early years of the society, people already stood for the idea that the earth is the center of the universe which is easy to believe at that time given that their perspective shows that the sun moves when observed from earth's atmosphere.