Aball is thrown vertically upward from the ground with velocity ~v0. assume air resistance exerts a force proportional to the velocity. write down a differential equation for the position. rewrite this equation in terms of the velocity and solve for ~v(t). does your solution give the correct result for t → [infinity]? what is the physical meaning of this asymptotic value? would you expect the time during which the ball rises to be longer or shorter than the time during which it falls back to the ground?

Which lists the main components of darwin’s theory of evolution? a. random mutations drive evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms do not change. b. natural selection drives evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms change over time. c. natural selection drives evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms change over time. d. random mutations drive evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms do not change.

The field between two charged parallel plates is kept constant. if the two plates are brought closer together, the potential difference between the two plates either a) decrease b) does not change c) increase?

Photons with the highest energy have the longest period