A wheel tractor-scraper whose weight on the driving wheels is 36,000 lbs has a gross weight of 64,000 lbs. If the road surface is wet earth having a rolling resistance factor of 120 lb/ton, what is the maximum grade the scraper could ascend?

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

What precautions should you take to prevent injuries when dealing with heavy loads?

For the closed feedwater heater below, feedwater enters state 3 at a pressure of 2000 psia and temperature of 420 °f at a rate of ix10 ibhr. the feedwat extracted steam enters state 1 at a pressure of 1000 psia and enthalpy of 1500 btu/lbm. the extracted er leaves at an enthalpy of 528.7 btu/lbm steam leaves as a saturated liquid. (16) a) determine the mass flow rate of the extraction steam used to heat the feedwater (10) b) determine the terminal temperature difference of the closed feedwater heater