Calculate the energy, in electron volts, of X-rays that have a frequency of 1.0 x 1019 Hz. eV
6.3 x 10 37
4.1 x 10 4
6.6 x 10 -15
1.1 x 10 -33

Waves are used in many practical applications to support work, entertainment, and health. one example is the use of ultrasound imaging to safely track the development of a growing fetus. what is a specific example of a practical application of waves in medicine, entertainment, safety, or other fields? provide a brief explanation of how the properties of waves are useful to that application.