Air enters a 12 m long, 7 cm diameter pipe at 50oC at a rate of 0.06 kg/s. The air is cooled at an average rate of 400W per m2 surface area of the pipe. What is the exit temperature

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

Along the line connecting the two charges, at what distance from the charge q1 is the total electric field from the two charges zero? express your answer in terms of some or all of the variables s, q1, q2 and k =14ï€ïµ0. if your answer is difficult to enter, consider simplifying it, as it can be made relatively simple with some work.

A2.00-m long piano wire with a mass per unit length of 12.0 g/m is under a tension of 8.00 kn. what is the frequency of the fundamental mode of vibration of this wire?