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1.Sled and rider with a total weight of 200 lb travel down smooth slope defined by equation y=x^2/20. At x=40 ft the sled's speed is 10 ft/s. At x=40 ft determine rate of increase of speed and the normal force which the slope exers on the sled. Neglect size of the sled and rider
2.A company can manufacture parts for a cost of $4.00 per unit plus $4,000 for tooling. A semiautomated system has been developed as an alternative. The costs for the proposed method are $40,000 for equipment and $1.00 per manufacturing cost per unit. What is the break-even number of units per year?
Determine the pump power in W & hp required to pump water froma tank at the base of the world's tallest building (1667 ft) to ahot tub of similar size on the roof. Ignore friction losses& changes in atmospheric pressure due to change inelevation. Flo..
A 20 kg box is on an upward inclined surface of 30 degrees from the floor. the velocity of the box is zero when it is subjected to a constant horizontal force F=30N. assuming the surface is smooth,
How much annual income would be need to be generated over a 5 year period to be equivalent to $4,000 over an 8 year period. Consider 6% nominal interest (compounded annually) for both cases.
Determine the forces on the beam and what force is needed at C to put the beam in equilibrium
the block w shown in figure below has a mass of 250 kg. bar ab rests against a smooth verticalnbspwall at end b and is
a trapezoidal canal 6m wide at the bottom and having a side slope of 1v2h carries water with a mean velocity of 1.0ms
A polystyrene rod consisting of two cylindrical portions AB and BC is restrained at both ends and supports two 6 kip loads. Knowing that E = 0.45 * 10^6 psi,
A soil sample with a water content of 14.5% and unit weight of 128.2 lb/cu. ft. was dried to a unit weight of 118.8 lb/cu. ft. without changing its void ratio. What is its new water content (in %)?
What is the maximum size aggregate which can be used in concrete for the following conditions 1. slabs on grade 6 inch #2- slab on grade 4 inch.
A certain gas has a molecular mass of 40. It is under a pressure of 2.5atm and a temperatature of 25 Degree Celsius. Determine its density and pressure in CGS absolute units.
Determine the degree of saturation of a sample of soil given that its maximum dry unit weight is 18 kN/m^3 and its optimum moisture content is 12.1%. Assume the Specific Gravity of soil is 2.65.
Box I contains 3 red and 5 white balls, while Box II contains 4 red and 2 white balls. A ball is chosen at random from the first box and placed in the second box without observing it's color. Then a ball is drawn from the second box.
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