Answer:
The sum of PE and KE remains constant
Explanation:
Answer:Water is easily evaporated, and oil and grease will not evaporate.
Explanation:
<span>Venus, Uranus, and Pluto are exceptions</span>
Answer:
The work done on the wagon is 37 joules.
Explanation:
Given that,
The force applied by Charlie to the right, F = 37.2 N
The force applied by Sara to the left, F' = 22.4 N
We need to find the work done on the wagon after it has moved 2.50 meters to the right. The net force acting on the wagon is :
![F_n=F-F'](https://tex.z-dn.net/?f=F_n%3DF-F%27)
![F_n=37.2-22.4](https://tex.z-dn.net/?f=F_n%3D37.2-22.4)
![F_n=14.8\ N](https://tex.z-dn.net/?f=F_n%3D14.8%5C%20N)
Work done on the wagon is given by the product of net force and displacement. It is given by :
![W=F_n\times d](https://tex.z-dn.net/?f=W%3DF_n%5Ctimes%20d)
![W=14.8\ N\times 2.5\ m](https://tex.z-dn.net/?f=W%3D14.8%5C%20N%5Ctimes%202.5%5C%20m)
W = 37 Joules
So, the work done on the wagon is 37 joules. Hence, this is the required solution.