Answer:
-13.09 N
Explanation:
Hello!
With Coulomb's law, the force of attraction between two charges can be calculated:
F=(K*q_1*q_2)/r^2
K=9*〖10〗^9 (N*m^2)/C^2
9,9 cm = 0,099 m
-2,3µC= -2,3*〖10〗^-6 C
6,2µC= 6,2*〖10〗^-6 C
By simplifying units the force remains in Newton.
Successes with your homework!
It traveled 200 m in 50 seconds. 200/50 can be simplified to 4 m/s!
The velocity is -4 m/s (negative because it travelled from 100 to -100 or backwards)
Answer:
i have no clue i just need brailnly points
Explanation:
Answer:
K = 0.076 J
Explanation:
The height of the target, h = 0.860 m
The mass of the steel ball, m = 0.0120 kg
Distance moved, d = 1.50 m
We need to find the kinetic energy (in joules) of the target ball just after it is struck. Let t is the time taken by the ball to reach the ground.
Put all the values,
The velocity of the ball is :
The kinetic energy of the ball is :
So, the required kinetic energy is 0.076 J.