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A material has a viscoelastic response that can be modeled by a maxwell model, where spring constant is 50 MPa and the dashpot viscosity is 600 MPa-s.
(a) Calculate the relaxation time of the material
(b) Is the material is initially stretched to a strain of 0.2, what will be the stress in the material after six seconds
(c) How much time will it take for the stress to reach one tenth of its initial value?
We have a mixture consistingof 90 mole% 'A' (45 mol/lit) and 10 mole%impurity 'B'(5 mol/lit). To be satisfactory quality the ratio of 'A' to 'B' in the mixture must be 100 to 1or higher.
A man comes home on a summer day and finds that his house is at 35oC. He turns on the air conditioner. In 30 minutes the entire house is at 22oC. If the COP of the air conditioner is 2.8, calculate the powerthat must be supplied to it. Assume the..
Calculate the chemical potential of methanol in solution with acetic acid at xMeOH = 0.8, 80 °C, 0.4 bar. The reference state is the pure liquid at 80 °C, 0.4 bar.
Look up the term chemiluminescence in a technical dictionary or chemical encyclopedia; provide a definition and explain how it can affect plume radiation.
A four-pole, lap-wound armature has 144 slots with two coil sides per slot, each coil having two turns. If the flux per pole is 20 mWb and the armature rotates at 720 r/min, calculate the induced voltage, given that the number of parallel paths is..
The window washers A and B support themselves and the 30-lb uniform plank CD by pulling down on the two ropes
The curie (Ci) is a commonly used unit for measuring nuclear radioactivity: 1 curie of radiation is equal to decay events per second (the number of decay events from 1 g of radium in 1 s).
Plot the heat transfer coefficient associated with free convection, forced convection, and mixed convection for air velocities ranging from 2 ≤ u∞ ≤ 10 m/s. The velocity of the plate is small compared to the air velocity.
How big of a container (cm3) is needed to store 1000 moles of a solution that contains 50% by mole carbon dioxide at 290 K, 30.1 bar?
Draw a network diagram for the building of the summerhouse and from it identify the critical path and the minimum duration of the project.
100 moles of a fuel containing methane and butane is burned with 25% excess air in a furnace producing stack gas at 300 degrees C and 105 kPa.
Two charges of equal magnitude 5µC but opposite sign are separated by a distance of 10 m. Find the net force experienced by a positive charge q = 2 µC that is placed midway between the two charges.
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