A electric coll has an internal resistance of 2ohms. A current o.5A is found to fond to flow when a resistor of 5ohms is connected across it . what is the e. m.f of the cell

Amira pulls a 3 pound wagon 4 feet. how much work has she done?

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.

The ozone hole appears in antarctica during