QUESTION 3 A constant force, F, acts on an object. The object undergoes a change in momentum of 45 kg m/s during 5 s.
The magnitude of F
is

☆3N
☆9N
☆90 N
☆225 N

Which of these statements is true? a. quarks pair with leptons to form protons and neutrons. b. quarks pair with bosons to form photons. c. quarks pair with photons to form protons and neutrons. d. quarks pair with other quarks to form protons and neutrons. e. quarks pair with electrons to form protons.

The energy released by a nuclear fusion reaction is produced when

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.