A red blood cell is 7 x 10-6 m in size. This means it is 7 in size. What unit completes the sentence?

Which of the following is not am example of a polymer? protein nylon kevlar concreta

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.

Which articulations allow for greatest range of motion?