Can you help me out with these problems.

1. How much voltage is created in a circuit that has 6.4 amps of current and 26 ohms resistance?

2. Calculate the energy released from a battery in a radio that was on for 3 and a half hours, that has 6V and 0.5A of current.

3. Calculate the power used in a toaster that uses 200 000 joules of energy in 150 seconds.

4. How much energy is created in a circuit that uses 2A in a 9 volt battery if it is switched on for 25 minutes.

5. If an appliance uses 75 000 J in 38 seconds, how much power is used?

6. Calculate the voltage drop of a circuit that has 2.5A of current, 0.25Ω resistance and runs for 30 s.

7. How much power is used in the following situation?
a. 120 V
b. 0.4 Ω
c. 8 A
d. 50 s

i solved 3, 5 and 7 but can you show your answers too please..