Find the wavelengths of electromagnetic waves with the following frequencies. (Assume the waves are traveling in a vacuum.) (a) 1.50 ✕ 1019 Hz (Enter your answer in pm.) pm (b) 4.00 ✕ 109 Hz (Enter your answer in cm.) cm

Radio waves transmitted through space travel at 3.00 x 10$ m/s. If their wavelength is 0.240 m, what is their frequency?e

An electromagnetic wave with a frequency of 6.10x1014 Hz propagates with a speed of 2.13x108 m/s in a certain piece of glass. For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Electromagnetic waves in different materials. ▼ Part A Find the wavelength of the wave in the glass. Express your answer in meters. λ = Submit Part B λο = 5 ΑΣΦ Submit Request Answer Find the wavelength of a wave of the same frequency propagating in air. Express your answer in meters. 15. ΑΣΦ Review | Constants Request Answer m m

A distant galaxy emits light that has a wavelength of 655.6 nm. On earth, the wavelength of this light is measured to be 661.9 nm. (a) Decide whether this galaxy is approaching or receding from the earth. (b) Find the speed of the galaxy relative to the earth. (Give your answer to 4 significant digits. Use 2.998 × 108 m/s as the speed of light.)