Answer:
the force between the two charges is 198.37 N
Explanation:
Given;
charge of the first particle, Q₁ = -3 x 10⁻⁵ C
charge of the second particle, Q₂ = 9.0 x 10⁻⁵ C
distance between the two charges, r = 0.35 m
The force between the two charges is calculated from Coulomb's law;
where k is Coulomb's constant = 9 x 10⁹ Nm²/C²
Therefore, the force between the two charges is 198.37 N
Answer:
v = 5.38 m/s
Explanation:
Given that,
A tennis ball is dropped from 1.48 m above the ground, d = 1.48 m
It rebounds to a height of 0.956 m
We need to find the velocity of the ball when it hits the ground. Using equation of kinematics as follows :
So, when the ball hits the ground, its velocity is 5.38 m/s.
Answer:
1.) Employee Driven Machines
2.) Self Driven Machines
Explanation:
A machine is a mechanical device that utilizes the application of forces to carry out an operation. It's operation can be "employee driven" (i.e it is operated by a person) or "self driven" (i.e it is operated by itself).
Answer:
Only Temperature
Explanation:
substances dont have a set Temperature and mass has nothing to do with its temperature.