A tennis ball is launched horizontally at a speed of 24.4 meters per second, and at a height of 2.10 meters above the ground. How long will it take for the tennis ball to reach the ground

Which type of wave can travel without a medium

Which statement best describes the superposition principle? a.) if two in-phase waves arrive simultaneously at a point, their amplitudes add up b.) if two out-of-phase waves arrive simultaneously at a point, their amplitudes add up c.) if two in-phase waves arrive at a point one after another, their amplitudes add up d.) if two out-of-phase waves arrive at a point one after another, their amplitudes adds up

When using the scientist method, which step comes last?