Kepler used the observations and data of which scientist to formulate his laws of planetary motion? A. Sir Isaac Newton B. Tycho Brahe C. Galileo Galilei D. Nicholas Copernicus

Calculate the amount of heat produced when 18000 coulombs of charge is transferred in one hour through a potential difference of 50v

An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0° above the horizontal. it then moves 137 ft at an angle of 48.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

Which statement correctly describes the relationship between frequency and wavelength?