Frequency = (speed) / (wavelength)
Frequency = (331 m/s) / (0.6 m) = 551.7 Hz
Answer:
B. Radiowaves
Explanation:
Radiowaves are on the higher end of the spectrum, then infrared, visible light, and UV light (which is the lowest energy)
Cathode Ray Tube i think?
K.E.= 1/2 x MV^2 = 1/2 x 40(kg) x (25x25) =12500J