If you are driving down a steep downgrade and have reached your safe speed of 40 mph, you would apply the service brake until your speed dropped to ____ mph.
a. 25
b. 30
c. 35
c. 35
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The gage pressure in an automobile tire is 240 kPa when the tire temperature is ?30°C. The automobile is driven to a warmer climate and the tire temperature increases to 65°C. The gage pressure in the tire assuming the elevation does not change is nearest:
A) 480 kPa B) 370 kPa C) 320 kPa D) 280 kPa
Draw the envelopes for maximum shear and moment in a 24-ft-long simply supported beam produced by a live load that consists of both a uniformly distributed load of 0.4 kip/ft of variable length and a concentrated load of 10 kips (Figure P12.42). The 10-kip load can act at any point. Compute values of the envelope at the supports, quarter points, and midspan.
At least __________ of free blacks lived in southern cities
A) three-quarters B) one-half C) one-third D) one-quarter