Copper has 8.5×1028 free electrons per cubic meter. A 69.0 cm length of 12-gauge copper wire, that is 2.05 mm in diameter, carries 4.50 A of current. How long does it take to travel the wire?
Repeat Part A for a 6 gauge copper wire.

Akg a of 55 m at an of 11 ? . if is at 98 km/h,be ?

Amass weighing 24 pounds, attached to the end of a spring, stretches it 4 inches. initially, the mass is released from rest from a point 8 inches below the equilibrium position. find the equation of motion. (use g = 32 ft/s2 for the acceleration due to gravity.)

8.29 two streams containing pyridine and acetic acid at 25°c are mixed and fed into a heat exchanger. due to the heat-of-mixing effect, it is desired to reduce the temperature after mixing to 25°c using a stream of chilled ethylene glycol as indicated in the diagram. calculate the mass flow rate of ethylene glycol needed. the heat capacity of ethylene glycol at these conditions is approximately 2.8 kj/(kg k), and the enthalpy change of mixing (δmixh) is given below.