Aspring has a constant of 53 n/m. how much elastic potential energy is stored in the spring when it is compressed by 0.21m?

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

Two point charges are on the y axis. a 3.90-µc charge is located at y = 1.25 cm, and a -2.4-µc charge is located at y = −1.80 cm. (a) find the total electric potential at the origin. v (b) find the total electric potential at the point whose coordinates are (1.50 cm, 0). v

The field between two charged parallel plates is kept constant. if the two plates are brought closer together, the potential difference between the two plates either a) decrease b) does not change c) increase?