() what area of the earth's mantle is the densest?
a. the entire mantle has the same density.
b. the area nearest to the earth's crust
c. the area in-between the earth's crust and core
d. the area nearest to the earth's core

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.

Awind turbine is rotating counterclockwise at 0.5 rev/s and slows to a stop in 10 s. its blades are 20 m in length. (a) what is the angular acceleration of the turbine? (b) what is the centripetal acceleration of the tip of the blades at t=0s? (c) what is the magnitude and direction of the total linear acceleration of the tip of the blades at t=0s?

Which body part transports oxygen removes waste materials in carries nutrients to the body as part of the circulatory system