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An automobile traveling at 30 miles per hour on level pavement with a coefficient of kinetic friction of 0.6. Weighs 3,000 lb. Sixty percent of its weight is on the front axle and 40% on the rear axle.
Calculate the braking distance if all brakes are working.
Calculate the braking distance if only the front brakes work.
Calculate the braking distance if only the rear brakes work.
Assuming constant acceleration, determine how long the train blocked the crossing. Dis- regard the width of the crossing.
Over the course of 3days, she added another 6lbs of water and at the end of 3days, there was 67lbs of water remaining. A nearby rain gage recorded 0.4 inches of precipitation over the period.
For a rubber component that, in its final form is to be vulcanized, should vulcanization be carried out prior or subsequent to the forming operation? Why?
Discuss bracing types of buildings with real-life example. Provide photograph or sketch for each type of bracing.
The time between truck arrivals at the station is exponentially distributed with a mean arrival rate of 1.5 veh/min. the time it takes vehicles to be weighed is exponentially distributed with a mean rate of 2 veh/min.
The total volume of the house is 650 m3 (assume that the volume is well mixed throughout). The radon source emits 250 pCi/s (A picoCurie [pCi] is a unit proportional to the amount of radon gas and indicates the amount of radioactivity of the gas)
A 1:2000 scale tidal model is operated to satisfy Froude’s law. A velocity of 0.02 ft/s is observed in the model. What is the velocity at the corresponding point in the prototype? What length of time in the model corresponds to one day in the prototy..
A water line to a home is usually 3⁄4" copper tube. What is the flow rate that can be delivered and still maintain laminar flow in the tube?
Find the mass of air in a closed chamber measuring 35 ft by 20 ft by 10 ft, when the pressure is 17 lb/in^2 and the temperature is 75°F, assuming air to be an ideal gas
An excursion train, travelling at 80ft/s, encounters a rain shower. The point A lies directly 8ft. beneath the lip of an overhang in the observation car. The raindrops can be assumed to be falling at a constant speed of 40ft/s.
Fixed GPS broadcast stations enable users to make differential measurements to other points whose positions are needed. In the US, there are two such networks two such networks of broadcast stations, name one (blank)
An aluminum rod (1) (E=80 GPa, d=24.5 x 10-6/oC) and a brass rod (2) (E=115 GPa, d=22.0 x 10-6/oC) are connected to rigid supports. The cross-sectional areas of rod (1) and (2) are 4,000 mm2 and 5,000 mm2
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