1.When a gas is kept at constant temperature and the pressure on it is changed, its volume changes in accord with the pressure-volume relationship known as Boyle's law V1/V2 = P2/P1, where P1 and V1 are the beginning volume and pressure and P2 and V2 are the final volume and pressure.

A} Solve for V1b) solve for V2 c) solve for P1d) solve for P2e) find P1, when V1 = 12 cu ft, V2 = 20 cu ft, and P2 = 147 psi.

2. Nurses use a formula known as young's rule to determine the amount of medicine to give a child under 12 years of age when the adult change is known. C = AD/A + 12. C is the child dose, A is the age of the child in years, and D is the adult dose.

a) Work backward and find the adult dose in terms of the child's dose. Solve for D.

b) Find D if C = 0.03 gram and A = 6.

3. From a series of measurements, the mean voltage in a certain line is found to be 22,610 V with a standard deviation of 134 V. A beaker must be installed to protect against surges in voltage. If the measurements are distributed normally and the beaker is set so that it is activated only about 2.5% of the time, what level is it set? The beaker must be set at _____.

A tool and die company manufactures a precise pin that is supposed to measure 10.25 mm in diameter. For equality control purposes, ten pins are selected at random and measured to determine how closely they match the diameter. The results are provided.

10.27, 10.31, 10.24, 10.22, 10.25, 10.21, 10.24, 10.31, 10.25, 10.21

a) Find the range of the measurement _____

b) Find the standard deviation of the measurement.