Which of the following are properties of mechanical waves? Select all that apply.
A.
Energy travels toward the source in all wave motion.

B.
Waves transport energy, but not matter.

C.
The particles of the medium always move parallel to the wave motion.

D.
The three categories of mechanical waves are transverse, longitudinal, and surface waves.

The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e

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.

According to the image below, which season is about to begin in the southern hemisphere? a. summer b. autumn c. winter d. spring