Reset the phet simulation (using the button in the lower right) and set it up in the following manner: select oscillate, select no end, and use the parameters in parentheses by sliding the bars for amplitude (1.00 cm), frequency (2.00 hz ), damping (none), and tension (highest). using the available rulers, calculate the frequency of a photon that corresponds to the wavelength of the resulting wave. assume the length with units (cm) of the ruler represents the real photon wavelength and that the speed of light is 3.00×108 m/s.

Amerry-go-round of radius r, shown in the figure, is rotating at constant angular speed. the friction in its bearings is so small that it can be ignored. a sandbag of mass m is dropped onto the merry-go-round, at a position designated by r. the sandbag does not slip or roll upon contact with the merry-go-round. how would you rank the following different combinations of m and r on the basis of the angular speed of the merry-go-round after the sandbag "sticks" to the merry-go-round from largest to smallest. a) m = 10kg, r = 0.25r b) m = 20kg, r = 0.25r c) m = 10kg, r = 0.50r d) m = 10kg, r = 1.0r e) m = 15kg, r = 0.75r f) m = 40kg, r = 0.25r