500N 4) In the drawing to above: a. How much force is the physics student exerting on the rope? In what direction? b. How much force is the wall excrting on the rope? In what direction? c. Would the Physics student be moving? If yes, is he accelerating? d. What is the net force on the force gauge? e. What would happen if the wall stopped exerting any force? f. What happens if the Physics student is standing on ice? g. What is the force between the student and the ground called? h. Draw and label arrows on the draw and label arrows on the diagram to represent three sets of force pairs

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.

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*

Which statement describes the formation of our sun? a disk formed of long trails of stars coiled into a spiral. it formed an elliptical flattened disk. heat and gases contracted within a nebula. gravity pushed stars away from a center core.