6. Internal resistance of cell when there is current of 0.40A when a battery of 6.0V is connected to a resistor of 14.5Ω is 1.5Ω
3.5Ω
2.3Ω
0.5Ω​

Ball b is hanging from an inextensible cord. an identical ball a is released from rest when it is just touching the cord and drops through the vertical distance h a 5 8 in. before striking ball b. assuming e 5 0.9 and no friction, determine the resulting maximum vertical displacement h b of the ball b

Is there a point between a 10 nc charge and a 20 nc charge at which the electric field is zero?

Asmall 12.00g plastic ball is suspended by a string in a uniform, horizontal electric field with a magnitude of 10^3 n/c. if the ball is in equilibrium when the string makes a 30 ° angle with the vertical, what is the net charge on the ball?