To understand the standard formula for a sinusoidal traveling wave. One formula for a wave with a y displacement (e. g., of a string) traveling in the x-direction is y(x, t)=Asin(kx−ωt). All the questions in this problem refer to this formula and to the wave it describes.
a. Which are the independent variables?
b. Which are parameters that determine the characteristics of the wave?
c. What is the phase phi(x, t) of the wave?
d. What is the wavelength lambda of the wave?
e. What is the period Tof this wave?
f. What is the speed of propagation v of this wave?

Consider an ideal gas at 27.0 degrees celsius and 1.00 atmosphere pressure. imagine the molecules to be uniformly spaced, with each molecule at the center of a small cube. what is the length l of an edge of each small cube if adjacent cubes touch but don't overlap?

If the area of a square has increased by a factor of 16, by how much has each side increased?

In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis. then the floor on which the passengers are standing suddenly drops away! if all goes well, the passengers will “stick” to the wall and not slide. clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. part a what is the minimum rotational frequency, in rpm, for which the ride is safe? express your answer using two significant figures. f f = rpm