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If the spring constant k=100lb/ft is initially unstretched, determine the maximum rotation of the light rod after impact.
A random poly(isobutylene-isoprene) copolymer has a number-average molecular weight of 202000 g/mol and a degree of polymerization of 3030.
The inside diameter of the pipe is 2 cm|. Estimate the convective heat-transfer coefficient using the appropriate dimensionless correlation.
If the velocity at entrance is 60 m/s, the velocity at exit is 360 m/s, and the inlet pipe is 3 m above the exhaust pipe, calculate the change of specific enthalpy across the turbine.
Calculate: a. The velocity of the fluid at exit b. The rate of flow of fluid when the inlet area is 0.1 m2 and the specific volume at inlet is 0.19 m3/kg.
The specific internal energy after expansion is 230 kJ/kg. Calculate the heat rejected to the cylinder cooling water per kg of gases during the expansion stroke.
Determine how far the plate moves downwards when the block momentarily stops after striking it. Neglect the mass of the plate.
A researcher working on a batch of a ceramic material tested two sets of samples for fracture strength. The average strength calculated for the bend bars was 40% higher than for the tensile specimens.
A brass rod 1.5 cm in diameter is deformed in tension reducing its diameter to 1.128 cm. If the deformation process was performed in one step, what was the yield stress of your brass after reduction?
Find v_2/v_1, the ratio of the velocity v_2 of the two-block system after the first collision to the velocity v_1 of the block of mass m_1 before the collision?
Find the kinetic energy K_e that the electron must have in order to excite the atom. What is the least possible initial kinetic energy the oxygen atom could have and still excite the cesium atom?
As the engineer in charge of the project, determine the required steady rate of cooling capacity for this process. Compare the COP with the maximum possible COP for this application.
A rigid, insulated 4 m^3 tank is divided into two halves by a thin membrane. One half contains argon gas at 25 degrees celsius. What is the final temperature and pressure of the argon?
The ambient pressure is 100 kPa. The pin is then removed and the water expands rapidly and adiabatically. What is the final state of the water?
You are asked if the system is good enough to detect all cracks that might result in rupture of the pressure vessel before plastic deformation can occur.
The rate of heat loss from the turbine casing to the surroundings is 8.5 kW. Calculate (a) the mass flow rate (kg/s) of the steam, and (b) the power output (MW) of the turbine.
Calculate the Schmid factor for all possible slip systems for slip of a single crystal of a FCC metal pulled in the [121]. By using the dot product and noticing when cos phi.
It is compressed slowly to 10 litres in a polytropic process with n=2 then compressed further to 5 litres in a second polytropic process in which n=1.5. Find the total work done on the carbon dioxid
Describe the microstructure of a heavily cold-worked metal of an Al=0.8% Mg alloy as observed with an optical microscope at 100x.
Calculate the water temperature (K) at the exit, (a) if there is no heat loss from the heat exchanger to the surroundings, and (b) if heat is lost to the surroundings at a rate of 6 kW.
The rate of heat loss from the turbine casing to the surroundings is 8.5 kW. Calculate (a) the mass flow rate (kg/s) of the steam, and (b) the power output (MW) of the turbine
If heat transfer from the heat exchanger to its surroundings in 10% of the energy required to increase the temperature of the oil, determine the steam mass flow rate, in kg/s.
The initial temperature of the plate and the cooling air temperature are 295 K when 300 W of power are switched on. Find the plate temperature after 10 minutes. Find the steady temperature of the co
Find the inlet area (m2). Find the velocity (m/s) and area (m2) at a point where p2 = 20 bar, T2 = 180oC, and Find the velocity (m/s) and area (m2) at a point where p3 = 5 bar, T3 = 50oC.