There are 25 elements found in living things. How many of these elements are found in some organisms but not all? 1
6
19
25

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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?

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?