Bols Help PSI-Physics
Homework 7a
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Ax = v. t + 1/2 at?
70. An object is moving with an initial velocity of 23 m/s. It is then subject to a
constant acceleration of 3.5 m/s2 for 12 s. How far will it have traveled during
the time of its acceleration?

Ametal ball with a mass of 0.028 kg is dropped from rest at a height of 1.0 meters above the ground. assuming the energy in the ball is conserved, how much kinetic energy will the ball have when it is 0.5 meters above the ground?

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 =

How much energy is supplied to each coulomb of charge that flows through a 12-v battery?