From the mantle rises and flows out through a vent onto earth's surface as this molten material, sometimes along with ash, cinders, and rock, builds up a mountain around the vent. the vent and its mountain together are called a

Which statement correctly describes the relationship between frequency and wavelength?

Who was the first scientist to measure speed as distance over time?

Abird flies directly overhead from where you stand at an altitude of 300.0 m and at a speed horizontal to the ground of 20.0 m/s. the bird has a mass of 2.0 kg. the radius vector to the bird makes an angle \thetaθ with respect to the ground. the radius vector to the bird and its momentum vector lie in the xyxy-plane. what is the bird’s angular momentum about the point where you are standing?