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You are standing in the middle of a frozen lake. There is no wind and the ice is so smooth it is frictionless. You are carrying a slingshot and 100 marbles each with a mass of 0.05kg. Your sling shot requires 250 N/m to pull it back and you have a reach of 1 m. Estimate your final velocity after you have shot all the marbles one at a time. Would you get any benefit (increased velocity) by shooting more than one marble at a time? Explain.
a frictionless piston-cylinder device fitted with stops above the piston contains 1.2 kg of air at 200degc and 700 kpa.
air is compressed in a piston-cylinder device from 100 kpa and 17degreec to 800 kpa in a reversible adiabatic process.
cu and ni form a substitutional solid solution. this means that the crystal structure of a cu-ni alloy consists of ni
Consider two-dimensional flow over the double-wedge airfoil shown. Find the lift and drag per meter span acting on the airfoil and sketch the flow pattern. Find the pressure acting on all surfaces.
a well-insulated control volume operates at a steady state and has one inlet location 1 and two outlets locations 2 and
write down expressions for the normal strain and the true strain for the following situation 1 in a tensile test where
a closed gaseous system undergoes a reversible process in which 35 kj of heat is rejected and the volume changes from
a propeller drive shaft is to transmit 2500 hp at 75 rpm. it is to be made of aisi 1040 wqt 1300 steel. use a design
argon at 2mpa and 500oc enters an isentropic turbine. the temperature of argon at the outlet is 20oc. determine the
A beam of span 600mm has a load of 1 kg and deflects by 0.55mm its width is 25.4mm and depth is 6.7mm what is the elastic modulus of the material?
identify the approximate values of each of the parameters listed below based on the graph.a yield strengthb tensile
consider the cuau crystal structure. it can be described as a simple cubic lattice with a basis of cu 0 0 0 cu 1 2 1 2
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