Ms. Perry travels north 5 km, 10 Km west, and then turns and travels 5 Km 20 points south. What is her displacement?
A:10 Km East
B:5 Km West
C:20 Km West
D:20 km East

F500 j of energy were added to 1 kg of each of these samples, which would experience the least temperature increase?

Find the magnetic field a distance r from the center of a long wire that has radius a and carries a uniform current per unit area j in the positive z direction.

Suppose a force of 60 n is required to stretch and hold a spring 0.1 m from its equilibrium position. a. assuming the spring obeys hooke's law, find the spring constant k. b. how much work is required to compress the spring 0.5 m from its equilibrium position? c. how much work is required to stretch the spring 0.6 m from its equilibrium position? d. how much additional work is required to stretch the spring 0.1 m if it has already been stretched 0.1 m from its equilibrium? a. kequals 600