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a truck travelling along a straight road at speed 20 km/hr increases its speed to 120 hr/hr in time 15 sec.If its acceleration is constant, determine the distance traveled.
Calculate the concentration of vacancies in Pb at its melting temperature of 327oC. Assume an energy for vacancy formation of 0.55 eV/atom. Lead has an atomic weight of 207.2 g/mol and a density of 11.35 g/cm3.
What is the acceleration of the aircraft (in m/s2)? How long does it take the aircraft to reach its take-off speed?
Newtons laws describing equations of motion for balance beam with cart (ball), Need to obtain a working mathematical model of the balance beam problem, preferably with a cart, not a ball
Cantilever Beam with maximum tensile strength. A cantilever beam is to be made using a symmetrical I section beam. The cantilever is to carry a load of 40kN at a distance 2.5m from the fixed end. The situation allows for a depth of I beam to be no..
A vapor-compression heat pump system uses R-134a as the working fluid. The refrigerant enters the compressor at 0.24 Mpa, 0 degrees Celsius, with a volumetric flow rate of 0.6m^3/min. The compression process is adiabatic to 0.9 MPa, 60 degrees Cel..
Starting from the energy equation and using the one-dimensional heat conduction derivation as an example
Find the final state inside the tank, A tank contains 2kg of nitrogen at 10K with a quality of 50%.Through a volume flow meter and valve, 0.5kg is now removed while the temperature remains constant.
calculate the position of the quasi-Fermi levels for electrons and holes with respect to the intrinsic level (assume that ni=1.5x10^10cm^-3).
The polynomial method is to be used to solve the equation. For the graphs, Mathcad or similar program is necessary to graph the solution.
A horizontal platform rests on four vertical springs, each of stiffness 15kN/m and mass 0.25kg. what will the frequency of oscillation of the table be if it has a mass of 2.okg
The entrance is inward projecting. What flow will be expected if the gate valve is one-half open?
Determine the molecular weight of a poly(ethylene-propylene) with a degree of polymerization of 25,000 given that 20% of the mers (by number) are ethylene and 80% are propylenel.
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