Blue light of wavelength 500 nm in a vacuum travels into glass, where its speed decrease to 200,000,000 m/s. Determine Its frequency and wavelength in the glass

A Car engine emits a note of constant frequency 200 Hz. It is moving away from observer at a speed of 60 m/s. Speed of sound on Air is 340 m/s. Determine The observed frequency

A Car engine emits a note of constant frequency 200 Hz. It is moving away from observer at a speed of 60 m/s. Speed of sound on Air is 340 m/s. Determine the observed wavelength!

A Car engine emits a note of constant frequency 300 Hz. It is moving toward observer at a speed of 40 m/s. Speed of sound on Air is 340 m/s. Determine the observed frequency!

A pilot is flying toward a sirene tower that rings the siren at 1700 Hz. However as the pilot approaches, he hears the sirene to be 2700 Hz. If the speed of sound wave is 340 m,s, what is the speed of the pilot!

An astronomer observes light from a distant star. A particular line in its spectrum has a wavelength of 550 nm. When measured in laboratory, the same spectral line has a wavelength of 535 nm. Determine The change in wavelength of the spectral line!

An astronomer observes light from a distant star. A particular line in its spectrum has a wavelength of 550 nm. When measured in laboratory, the same spectral line has a wavelength of 535 nm. Determine The speed of star!

What is the the shortest wavelength in electromagnetic spectrum?

What is the electromagnetic spectrum that has range of wavelength from 400 nm to 700 nm.