The layers of Earth are the . A
hydrosphere, atmosphere, troposphere, outer core and inner core

B
stratosphere, ionosphere, troposphere, outer core and inner core

C
crust, mantle, outer core and inner core

D
tectonic plates, faults, lithosphere and core

Let f(x) = x4- 8x2 . find the relativeextrema of this function using the second derivative test.

Abicycle slows down when the rider applies the brakes. what type of energy transformation is involved in this example? a. kinetic energy into heat energy b. heat energy into potential energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?