Answer: Fnet = 40 N on the right
Explanation: The net force is the summation of forces acting on an object. Add the forces in the same direction and subtract to the opposing force moving in the opposite side.
Fnet= F1 + F2 - F3
= 120 N + 60 N - 140 N
= 180 N - 140 N
= 40 N on the right
Answer:
The total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision.
Answer:
The objects were 1.8m apart.
Explanation:
We will start stating the Coulomb's Law. It says that:
![F_e=\frac{Kq_1q_2}{r^{2}}](https://tex.z-dn.net/?f=F_e%3D%5Cfrac%7BKq_1q_2%7D%7Br%5E%7B2%7D%7D)
Where F_e is the electric force between the objects, q_1 and q_2 are the magnitude of the charge of the objects, r is the distance between them and K is the Coulomb's constant (
in vacuum). Solving for the distance r we have:
![r=\sqrt{\frac{Kq_1q_2}{F_e} }](https://tex.z-dn.net/?f=r%3D%5Csqrt%7B%5Cfrac%7BKq_1q_2%7D%7BF_e%7D%20%7D)
Plugging the given values into this equation, we obtain:
![r=\sqrt{\frac{(8.9*10^{9}\frac{Nm^{2} }{C^{2} })(2.56*10^{-6}C)(3.34*10^{-7}C)}{2.26*10^{-3}N}}=1.8m](https://tex.z-dn.net/?f=r%3D%5Csqrt%7B%5Cfrac%7B%288.9%2A10%5E%7B9%7D%5Cfrac%7BNm%5E%7B2%7D%20%7D%7BC%5E%7B2%7D%20%7D%29%282.56%2A10%5E%7B-6%7DC%29%283.34%2A10%5E%7B-7%7DC%29%7D%7B2.26%2A10%5E%7B-3%7DN%7D%7D%3D1.8m)
In words, the two charged objects were 1.8m apart.
1. Energy transfer is the movement of energy from one location to another. For example, when electricity moves from a wall plug, through a charger, to a battery.
2. Insulation helps to prevent that transfer of heat. Many different materials are used for insulation. Engineers often use fiberglass, wool, cotton, paper (wood cellulose), straw and various types of foams to insulate buildings. A layer of trapped air can serve as insulation, too!
3. I'm not sure. Sorry
Congress has the power to make laws, declare war, raise and provide public money as well as overseeing its proper expenditure, impeach and try federal officers. (Tell me if you need more)