3. A battery has an e. m.f. of 3 V and an internal resistance of 12. What current will it give if it is connected to a circuit of
resistance:
a) 2.12
b) 4.1?
What current will it give if its terminals are short-circuited?

answer; how far out of place which the object finished relative to the starting location;

+15-35=-20

going in opposite directions

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.