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

What is the fate of the electrons that interact with a specimen in an electron microscope?

The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has a magnitude of 7.0 × 10-6 c/m2. (a) what is the magnitude of the electric field within the cell membrane? (b) find the magnitude of the electric force that would be exerted on a potassium ion (k+; charge = +e) placed inside the membrane.

2. which of the following does not affect the electrical resistance of a body? a. material composing the body b. bodies directly surrounding the body c. length of the body > d. temperature of the body