Levi observed properties of four different waves and
recorded observations about each one in his chart.
which statement is best supported by the table?
wave
observations
travels fastest
through metal
travels fastest
through air
travels more slowly
through water than
air
travels more slowly
at cool temperatures
wave w and y are light waves, wave z is a sound
waves, and it is impossible to tell what kind of wave
wave x is.
wave w is a light wave, waves x and y are sound
waves, and it is impossible to tell what kind of wave
wave zis.
waves w and z are sound waves, and waves x and y
are light waves
wave w is a sound wave, waves x and y are light
waves, and it is impossible to tell what kind of wave
wave zis

Chapter 23, problem 075 the figure shows a geiger counter, a device used to detect ionizing radiation (radiation that causes ionization of atoms). the counter consists of a thin, positively charged central wire surrounded by a concentric, circular, conducting cylindrical shell with an equal negative charge. thus, a strong radial electric field is set up inside the shell. the shell contains a low-pressure inert gas. a particle of radiation entering the device through the shell wall ionizes a few of the gas atoms. the resulting free electrons (e) are drawn to the positive wire. however, the electric field is so intense that, between collisions with gas atoms, the free electrons gain energy sufficient to ionize these atoms also. more free electrons are thereby created, and the process is repeated until the electrons reach the wire. the resulting "avalanche" of electrons is collected by the wire, generating a signal that is used to record the passage of the original particle of radiation. suppose the radius of the central wire is 24 âµm, the inner radius of the shell 2.3 cm, and the length of the shell 14 cm. if the electric field at the shell's inner wall is 2.8 ă— 104 n/c, what is the total positive charge on the central wire?

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

Does anyone have the answers to online physics course plato course physics, semester a v3.0