A12-kg turtle rests on the bed of a zookeeper's truck, which is traveling down a country road at 62.0 mi/h. the zookeeper spots a deer in the road, and slows to a stop in 11 s. assuming constant acceleration, what is the minimum coefficient of static friction between the turtle and the truck bed surface needed to prevent the turtle from sliding?

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 =

Which of the following characteristics is fixed, or definite, for all states of matter?

Amoving freight car collides with an identical one that is at rest. if momentum is conserved, what happens to the second car after the collision? it attains the same speed as the first car. it moves at half the speed of the first car. it moves at twice the speed of the first car.