The battery pack of a pocket calculator has a voltage of 3 V and delivers a current of 0.17 mA. In one hour of operation. (a) How much charge flows in the circuit and (b) how much energy does the battery deliver to the calculator circuit?

Oxygen and nutrients are moved through the body by the: a. circulatory system c. lymphatic system b. digestive system d. reproductive system

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

First answer marked as brainiest which is the correct equation describing the first law of thermodynamics? a) when the internal energy of a system changes, it equals the amount of heat added plus the work done. b) when work is done by the piston, it is equal to the heat added plus the change in internal energy of the system. c) when heat is added to the system, it is equal to the amount of work done by the piston plus the change in internal energy of the system.