Two airplanes leave an airport at the same time. the velocity of the first plane is 690 m/h at a heading of 67.5° . the velocity of the second is 620 m/h at a heading of 182°. how far apart are they after 3.5 h?

Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?

Aspectroscope breaks light up into its colors, allowing scientists to analyze light from the solar system and universe. by studying the spectral line patterns, widths, strengths and positions, scientists can determine the speed, position, and of celestial bodies. a) age b) origin c) rotation d) temperature

Acar is traveling 35 mph on a smooth surface . if a balanced force is applied to the car what happens?