Answer: The distance between the man and the plane increasing at a rate of 400ft/s
Explanation: Please see the attachments below
The particles in a solid are tightly packed and the particles do not move
The particles of liquid is less tightly packed and move with lesser kinetic energy than solids
The particles of gases are least tightly packed and the particles move around freely with the least kinetic energy than solids and liquids
Answer:
Planet Y
Rx = 1.587 Ry
Explanation:
Tx = 290 days
Ty = 145 days
Let the semi major axis of planet X is Rx and of plant Y is Ry.
According to the Kepler's third law of planetary motion
![\frac{T_{x}^{2}}{T_{y}^{2}}=\frac{R_{x}^{3}}{R_{y}^{3}}](https://tex.z-dn.net/?f=%5Cfrac%7BT_%7Bx%7D%5E%7B2%7D%7D%7BT_%7By%7D%5E%7B2%7D%7D%3D%5Cfrac%7BR_%7Bx%7D%5E%7B3%7D%7D%7BR_%7By%7D%5E%7B3%7D%7D)
![\frac{290^{2}}{145^{2}}=\frac{R_{x}^{3}}{R_{y}^{3}}](https://tex.z-dn.net/?f=%5Cfrac%7B290%5E%7B2%7D%7D%7B145%5E%7B2%7D%7D%3D%5Cfrac%7BR_%7Bx%7D%5E%7B3%7D%7D%7BR_%7By%7D%5E%7B3%7D%7D)
![4=\frac{R_{x}^{3}}{R_{y}^{3}}](https://tex.z-dn.net/?f=4%3D%5Cfrac%7BR_%7Bx%7D%5E%7B3%7D%7D%7BR_%7By%7D%5E%7B3%7D%7D)
![1.587=\frac{R_{x}}{R_{y}}](https://tex.z-dn.net/?f=1.587%3D%5Cfrac%7BR_%7Bx%7D%7D%7BR_%7By%7D%7D)
Rx = 1.587 Ry
So, planet Y is closest to star.
<span>The last main subatomic particle to be discovered was the
antihelium-4. It was discovered on 2011
and it is measured and produces through the STAR detector. The Antihelium-4 was discovered accidentally
when an experiment was conducted. It is
also the first particle that was discovered by the means of experiment.</span>