Why it takes much more effort to stop a freight train compared with a car. Include the term force, mass, and acceleration

Which force is most responsible for binding together an atom's protons and neutrons? electrostatic gravitational nuclear magnetic

Lymphocytes known as blastocysts make antibodies that fight infection. select the best answer from the choices provided t f

Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.