1. What is the force between two balloons with a negative charge of 1.6 x 10¹⁰ C if the balloons are 5.0 cm apart?
   1. Try writing out the response in scientific notation. Then enter the answer in two separate entries: (1) for coefficient (with 1 decimal place) and (2) for the exponent (Don't forget to specify + or -).
2. A 10.0 lightbulb is connected to a 12.0 V battery.
   1. What current flows (in Ampere) through the bulb?
   2. What is the power (in watts) of the bulb?
3. A step-down transformer connected to a 120 V electric generator has 30 loops on the primary for each loop in the secondary. ( Assume no losses.)
   1. What is the voltage of the secondary (in Volts)?
   2. If the transformer has a 90.0 A current in the primary, what is the current (in Ampere) in the secondary?
   3. What are the power input (in watts)?
   4. What are the power output(in watts)?