Suppose a current of 110' flows through a copper wire for minutes. calculate how many moles of electrons travel through the wire. be sure your answer has the correct unit symbol and the correct number of significant digits.

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?

Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.