While taking a walk a bear travels 2.5 km [S] for 1 hour, then 4.6 km [N] for 3.5 hours then 0.4km [S] for 30 minutes. Then the bear lays down to take a nap.
a) What is the bear’s displacement in kilometers?
b) What is bear’s distance traveled for the trip?

The current in a hair dryer measures 11 amps. the resistance of the hair dryer is 12 ohms. what is the voltage?unit:

Review multiple-concept example 7 in this chapter as an aid in solving this problem. in a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. in one instance, the radius of the circle is 0.626 m. at one point on this circle, the ball has an angular acceleration of 66.1 rad/s2 and an angular speed of 12.6 rad/s. (a) find the magnitude of the total acceleration (centripetal plus tangential) of the ball. (b) determine the angle of the total acceleration relative to the radial direction.

Another word for electromagnetic energy is a. heat b. force c. matter d. radiation