Abolt is threaded onto one end of a thin horizontal rod, and the rod is then rotated horizontally about its other end. an engineer monitors the motion by flashing a strobe lamp onto the rod and bolt, adjusting the strobe rate until the bolt appears to be in the same eight places during each full rotation of the rod. the strobe rate is 2000 flashes per second; the bolt has mass 50 g and is at radius 3.5 cm. what is the magnitude of the force on the bolt from the rod?

Unaware that 35% of the 10000 voters in his constituency support him, a politician decides to estimate his political strength. a sample of 200 voters shows that 40% support him. a. what is the population? b. what is the parameter of interest? state its value c. what is the statistics of the interest? state its value d. compare your answers in (b) and (c) is it surprising they are different? if the politician were to sample another 200 voters, which of the two numbers would most likely change? explain