If the torque required to loosen a nut that
is holding a flat tire in place on a car has a
magnitude of 34 n · m, what minimum force
must be exerted by the mechanic at the end
of a 30 cm-long wrench to loosen the nut?
answer in units of n

Which of the following is considered to be a vector?               a.  temperature    b.  velocity    c.  time    d.  mass

What is the primary force that suspension bridges use cables to hold their spans up? a. tension force b. resistance force c. normal force d. elastic force e. applied force

The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e