. QUESTION What three physical quantities determine a minimum and maximum safe speed on a
banked racetrack? (Select all that apply.)
U the weight of the vehicle
the mass of the vehicle
the coefficient of kinetic friction between the tires and the road surface
the radil of the curves
the angle the road surface makes from the horizontal
the coefficient of maximum static friction between the tires and the road surface

We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?

Asap and show ! a 14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.

Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1×105 wm-2k-1 and t∞ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =