Ablock of mass 2.40 kg is on a tabletop and is connected to a second block by a pulley. the second block has a mass of 1.80 kg and hangs straight down. when the blocks are released from rest they move through a distance of 0.500 m, at which point the hanging block hits the floor. given that the coefficient of kinetic friction between the first mass and the horizontal tabletop is 0.450, find the speed of the blocks just before the second block lands. (use energy relations to solve.)

Rats that received electric shocks were unlikely to develop ulcers if the

Read the scenario. alfonso is 19 years old and has a high school diploma. recently, he was promoted to assistant manager at the fast-food restaurant where he has worked since the age of sixteen. his dream is to become the restaurant’s manager. what is his best option for achieving his dream? he should find another job and work his way up to a higher position. he should hope that his manager transfers to another location and that he is his replacement. he should attend classes at the local college to receive training in management. he should work hard, work longer hours, and remain assistant manager.

Suppose either computers or televisions can be assembled with the following labor inputs: units produced 1 2 3 4 5 6 7 8 9 10 total labor used 3 7 12 18 25 33 42 54 70 90 (a) draw the production possibilities curve for an economy with 54 units of labor. label it p54. (b) what is the opportunity cost of the eighth computer? (c) suppose immigration brings in 36 more workers. redraw the production possibilities curve to reflect this added labor. label the new curve p90.