Answer:

Explanation:
The formula for the velocity of the ball is

1. Velocity at time of impact

2. Velocity on rebound
The ball has enough upward velocity to reach a height of 0.86 m.

3. Acceleration

Answer:
Isotopes
Explanation:
Isotopes are the same element with different masses because of the different number of neutrons. Also, the element doesn't change. If we change the protons, the element will change and then it won't be an isotope. Hope it helps!
Answer:1.30 x 10 to the 4th
Explanation:
Just know
Answer:
D. visible light and the electromagnetic spectrum
have a small area of overlap.
Explanation:
you have to look careful in answering questions you could end up right or wrong, on these answers are very important to know, and I am always right with these answer's
Answer: C. Electrochemical cells involve oxidation-reduction reactions.
Explanation: Oxidation occurs at the anode, and reduction occurs at the cathode.