An oxygen molecule is moving near the earth's surface. another oxygen molecule is moving in the ionosphere (the uppermost part of the earth's atmosphere) where the kelvin temperature is three times greater. determine the ratio of the translational rms speed in the ionosphere to the translational rms near the earth's surface.'

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 position of a crate sliding down a ramp is given by x=(0.05t^3) m, y=(1.7t^2) m, z=(6−0.85t^5/2) m, where t is in seconds. (a) determine the magnitude of the crate's velocity when t = 2 s. (b) determine the magnitude of the crate's acceleration when t = 2 s.

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.