Acheetah can go from a state of resting to running at 20 m/s in just 2 seconds. what is the cheetah’s average acceleration?

a.
0.1 m/s^2

b.
10 m/s^2

c.
0.1 m/s

d.
10 m/s

Along the line connecting the two charges, at what distance from the charge q1 is the total electric field from the two charges zero? express your answer in terms of some or all of the variables s, q1, q2 and k =14ï€ïµ0. if your answer is difficult to enter, consider simplifying it, as it can be made relatively simple with some work.

How will the system respond to a temperature increase?

In a hydrogen molecule there are a total of four charges, 2 protons in the two nuclei, and 2 electrons. how many unique charge-pairs are there (without double counting)?