Astudent standing on the ground throws a ball straight up. the ball leaves the student's hand with a speed of 16.0 m/s when the hand is 2.20 m above the ground. you may want to review (pages 49 - 51) . for with math skills, you may want to review: quadratic equations for general problem-solving tips and strategies for this topic, you may want to view a video tutor solution of time in the air for a tossed ball.

What is an electric motor? explain its operation. 2-3 sentence

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*

2. circled insects have mutations, or changes to their dna. how many of the offspring insects in this generation have mutations?