In a liquid with a density of 1400 kg/m3 , longitudinal waves with a frequency of 370 hz are found to have a wavelength of 8.40 m . calculate the bulk modulus of the liquid.

How many neutrons does plutonium -196 with an atomic number of 78.

Asteel tube (k=50 w/mk) of inner and outer diameter di = 20mm and do=26mm, respectively, is used to transfer heat from hot gases flowing over the tube (h-hot = 200w/m2k) to cold water flowing through the tube (h-cold = 8000 w/m2k). what is the cold-side overall heat transfer coefficient uc? to enhance heat transfer 16 straight fins of rectangular profile are installed longitudinally along the outer surface of the tube. the fins are equally spaced around the circumference of the tube, each having a thickness of 2mm and a length of 15mm. what is the corresponding overall heat transfer coefficient uc? *solve for uc in both cases*

What is the role of the water cycle in maintaining freshwater levels in lake and rivers?