The GRAVE DIGGER monster truck has a 1500 horsepower big block motor that turns the steel drive shaft at 1000 revolutions per minute as it crushes cars. Required:
Determine the required outside diameter of the tubular driveshaft to the nearest 1/2 if the wall thickness is 1/4

Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

The short distance from the objective lens to the object causes problems at high magnification. which of the following is the most serious? a. cleaning the object surface b. positioning the object c. reflection from the object surface. d. illumination of the object