In a Cartesian frame of reference, the potential
energy of an object is
given by u(x) = 6x2 + 2x3
where U is in joules and x
in metres. In addition to
the origin, the position
where the object is in
equilibrium is?

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?

Contrast the force of gravity between these pairs of objects: 1-kg mass and a 2-kg mass that are 1 m apart; a 1-kg mass and a 2-kg mass that are 2 m apart; and two 2=kg masses that are 1 m apart. i dont understand.

The unit of resistivity is the: ohm ohm-cm volt coulomb