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1.A level test track has a coefficient of road adhesion of 0.80, and a car being tested has a coefficient of rolling friction that is approximated as 0.018 for all speeds. the vehicle is tested unloaded and achieves the theoretical minimum stop in 180 ft. the initial speed was 60 mi/h. ignoring aerodynamic resistance, what is the unloaded braking efficiency?
2.An engineering student is driving on a level roadway and sees a construction sign 500 ft ahead in the middle of the roadway. the student strikes the sign at a speed of 25 mi/h. if the student was traveling at 55 mi/h when the sign was first spotted, what was the students associated perception/ reaction time?
Divide the sodium hydroxidecharge into 10 smaller charges, and add them one at a time, makingsure that each is well mixed and the tank temperature has stoppedincreasing before adding the next charge.
A motorcyclist travels around a curved path that has a radius of 200 . While traveling around the curved path, the motorcyclist increases speed by 1.25 . If the motorcyclist starts from rest, determine the time needed to reach an acceleration of 5...
A rancher has 1200 ft of fencing to enclose a double paddock with two rectangular regions of equal areas. find the maximum area that the rancher can enclose.
A soil sample is obtained by pushing a 16 inch long tube into the side of a pit. The tube has an inside diameter of 3 inch and weighs 1.8 lb. The soil in the tube is trimmed so that its ends are flush with the ends of the tube.
If the resistivity of this alloy is dependent only on thermal and impurity considerations, find the amount of changes in length of the rod (in mm) when the temperature is changed from T1 to 1.47268x10^2 °C.
When fluid of specific weight 8.2 KN/m^3 flows in a 150-mm-diameter pipe, the frictional stress between the fluid and the pipe wall is 25 N/m^2. Calculate the friction head loss per meter of pipe
John Adams has a $65,000 adjustable gross income from Apple Corp. and allowable itemized deductions of $7200. Mary Eve has a $75,000 adjustable gross income and $2000 of allowable itemized deductions.
1. draw a plan of a typical strip mine showing all operational features and equipment.2. answer the followinga. why is
For a given tank circuit resonance frequency, what is the parameter that determines the bandwidth
a tension member with cross-sectional area 3 in2 resists a load of 10 kips. How do you Calculate the normal and shear stress on planes making a 0, 20, 45, and 60 angle with the transverse section.
A local contractor has just bought warehouse and decided to fence in an area of 1152 square feet behind the warehouse.He plans to use the wall of the building as one of the four sides that will enclose the rectangular area.
At failure, the respective minor and major principal stress values are 20 kPa and 46 kPa for one and 40 kPa and 80 kPa for sample two. From these data, determine the value for (phi)cu and the cohesion intercept c on the Mohr's circle shear stress ..
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