Which of the following is true of friction? a friction makes motion possible on earth. b. friction has mass and can be held. c. friction is always equal to velocity

What is binding energy and separation energy

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?

Acar of mass m goes around a banked curve of radius r with speed v. if the road is frictionless due to ice, the car can still negotiate the curve if the horizontal component of the normal force on the car from the road is equal in magnitude to 101) a) mv2/r b) mg/2. d) mg e) tan[v2/(eg)]