At a festival, spherical balloons with a radius of are to be inflated with hot air and released. the air at the festival will have a temperature of and must be heated to to make the balloons float. of propane fuel are available to be burned to heat the air. calculate the maximum number of balloons that can be inflated with hot air.

Select light for the type of wave, adjust the wavelength so that the light is red, and increase the amplitude of the light to the max. then, select the start button at the source location to begin producing the waves. light is a form of electromagnetic wave, containing oscillating electric and magnetic fields. the wave amplitude detector mentioned above shows how the electric field oscillates in time at the location of the probe. the amplitude of the wave at the location of the probe is equal to the maximum electric field measured. how does the amplitude of the wave depend on the distance from the source?