You're carrying a 3.6-m-long, 21 kg pole to a construction site when you decide to stop for a rest. you place one end of the pole on a fence post and hold the other end of the pole 35 cm from its tip. for the steps and strategies involved in solving a similar problem, you may view a video tutor solution. part a part complete how much force must you exert to keep the pole motionless in a horizontal position? express your answer in newtons. f = 114 n previous answers

Asap and show ! a 14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.

This is the number of complete movements of a wave per second.

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*