Please help me out 1. A 5.0 V battery contains 775 C of charge. How much electricity energy can it produce?
2. 200 C of charge passes through a circuit in 20 minutes. What is the current?
3. A battery can produce 337 joules of energy for every 9.5 coulombs of charge. What is its voltage?

1.3875 Joules. 2. 0.17A 3. 35.47volts

Explanation:

1. Energy = Q × V = 5 × 775 = 3875 Joules.

Q is quantity of electricity in Columbs

V is Voltage in volts

2. From Q = I × t

Q is quantity of electricity in Columbs

T is time taken

I is current

Now we define I as the quantity of electricity in 1 sec; hence;

200= I × 20× 60 [ 20minutes converted to seconds ]

I = 200/ 20× 60.= 200/1200=0.1667

= 0.17A( to the nearest hundredth)

3.v = E/ Q ( from equation in question 1)

V = 337/9.5 = 35.47volts

conservation of mass

mass before something happens = mass afterwards