Which sentence contains italicized words that are used as an infinitive phrase?
a. tom went there for some flour.
b. mark wanted to go, but not today.
c. jane parked her car behind a truck.
d. kelly went to the grocery store.

Aproton is projected toward a fixed nucleus of charge +ze with velocity vo. initially the two particles are very far apart. when the proton is a distance r from the nucleus its velocity has decreased to 1/2vo. how far from the nucleus will the proton be when its velocity has dropped to 1/4vo?

A200-n force is applied to the foot-operated air pump. the return spring s exerts a 2.6-n·m moment on member oba for this position. determine the corresponding compression force c in the cylinder bd. if the diameter of the piston in the cylinder is 40 mm, estimate the air pressure generated for these conditions. state any assumptions. enter a positive number for the compression force c.

Which of the following list the divisions of the geologic time scale in order from longest to shortest