Suppose that a disk i/o takes 100 msec. let b(r) = 100, so the disk i/o’s for computing σc(r) on a uniprocessor machine will take about 10 seconds. what is the approximate speedup if this selection is executed on a parallel machine with p page 3 of 3 processors, where (a) p = 8 (b) p = 100 (c) p =1000 (2 pts)?

An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?

Calculate the first and second velocities of the car with four washers attached to the pulley, using the formulas v1 = 0.25 m / t1 , and v2 = 0.25 m / (t2 – t1) where t1 and t2 are the average times the car took to reach the 0.25 and the 0.50 meter marks. record these velocities, to two decimal places, in table e.

Write a hypothesis about the effect of increasing resistance on the current in the circuit. use theformat and be sure to answer the lesson question. “how do changes in voltage or resistance affect current in an electric circuit? ”