Superman is carrying Lois lane as he walks the street of Metropolis. He uses a force of 545 N to carry her. What is her mass ?( use gravity in place of acceleration) *

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Drag each item into the proper state of matter category.

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