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A rear-wheel-drive 3000-lb drag race car has a 200-inch wheelbase and a center of gravity 20 inches above the pavement and 140 inches behind the front axle. The owner wish to achieve an initial acceleration from rest of 15 ft/s^2 on a level paved surface. What is the maximum coefficient of road adhesion needed to achieve this acceleration?
A hydrologic structure (e.g. a dam or a dike) is said to be designed for the N-year flood if it has a capacity which will be exceeded only by a flood equal oto or greater than N-year flood.
The initial concentration of carbon in the metal is 0.1wt%. We first do an experiment by applying a concentration of 5%wt of carbon at the surface of a similar slab and maintaining the system at 900 K for an hour.
For each of the following, draw both the p - v and the T - v diagrams showing the location of the state and write below the diagrams a) what the condition the H2O is in (eg. Superheated vapor), b) which table in the back of the text provides the e..
a component in a packaging machine is subjected to a tensile load of 36.6 KN which will be repeated several times over the life of the machine. The cross-section of the component is 12 mm thick and 20 mm wide.
A square with the dimensions of .02m by .02m by .5m is attatched to a solid surface. If the forces on the rod are too large, it will either crush or be sheared off where it is atatched to the solid surface.
A culvert under a road must be 35m long, have a slope of 0.0035 and carry 4m^3/s. The crown of the roadway is 4.2m above the culvert invert. Assume the outlet will discharge freely.
Due to atmosphere drag, the deceleration equation is 60a=588.6-30v^2 in m/s^2. Find the velocity at which he lands on the ground. This velocity is referred to as terminal velocity, which is found by letting the distance of the fall (y) go to infin..
The flow of water over a weir, can be computed by Q=5.35LH^(3/2), where Q is the volume low rate of water in cubic feet per second, L is the length of weir in feet, and H is the height of water over the weir in feet.
A new concrete mix is being designed to provide adequate compressive strength for concrete blocks. The specification for a particular application calls for the blocks to have a mean compressive strength greater than 1350 kPa.
One second later another ball is thrown vertically from the ground with a velocity of 10m/s. Determine the height from the ground where the two balls pass eachother.
A small truck is to be driven down a 4% grade at 70mi/hr. The coefficient of road adhesion is 0.95, and it is known that the baking efficiency is 80% when the truck is empty and decreases by one percentage point for every 100 lb of cargo added.
determine the rate of discharge through the gate; b) determine the critical depth , yc at the minimum energy, Es,min; c) determine the critical depth, yc at the current flow; d) determine the alternate depth; e) determine the flow regime (sub- or ..
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