A wave pulse is created in a slinky. It takes 1.2 seconds to travel the length of the slinky. If the slinky is 8 meters long (1 wavelength), what is the speed of the wave?

What type of light does this light bulb produce most (i.e. at what wavelength does the spectrum have maximum intensity)?

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.

An athlete is holding 24 lb of weights at a height of 6 inches above the stack as shown. to lower the weights, she applies a constant force of 5 lb to the handle. determine the velocity of the weights immediately before they hit the stack.