Help me with this problem: Find the magnitude and direction of (a) 9B vector– 3Ā vector and (b) –5Ā vector + 8B vector, where Ā = (23.0, 59.0), B = (90.0, – 150.0).

(With the steps please)

Within a pendulum, as potential energy decreases, energy increases. a. heat b. kinetic c. frictional d. gravitational

If an astronaut takes an object to the moon the following is true (choose only one). a the mass will change but the weight will be the same. b both the mass and the weight of the object will be the same. c the weight will change but the mass will be the same. d both the mass and the weight of the object will change.

Observations show that interstellar clouds can have almost any shape and