Law of inertia Material: Beaker, index card, penny

Procedure:
1.place the index card over the opening of the beaker
2.place the penny in the middle of the index card
3,Thump, flick, or pull the index card as quickly as possible

1.What happens to thd index card?
2.What happens to the penny
3.How does this show that objects at rest want to stay at rest
4.How does this demonstrate Newton first law of motion? ​

answer: option c. i.e. electric current flowing “downhill” from the negative electrode to the positive electrode in a battery

explanation:

the water analogy to the circuits define the pipes (water flows) to the electric current. now, we know that the electric current flows from the positive terminal to the circuit (as shown in the diagram attached).

hence, option c is the correct answer.

temp rises, and expansion

measuring things 1 litre of water