What are beats? periodic fluctuations in the velocity of sound waves periodic fluctuations in the wavelength of sound waves periodic fluctuations in the intensity of sound waves periodic fluctuations in the frequency of sound waves

Acar moves a distance of 50.0 km west, followed by a distance of 64.9 km north what was the magnitude of the displacement of the car, in units of kilometers?

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.

Which type of energy is transferred by convection currents?