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A household refrigerator that has a power input of 80W (assume constant work input over time) and a coefficient of performance of 2.5 is to cool 24 bottles of Mt. Dew weighing 1 lb ea to 40 °F. If the bottles are initially at 75 °F, determine how long it will take for the refrigerator to cool them. Assume the cans can be treated as a pure substance whose specific heat is .42 Btu/lb °F.
Assuming that the bomb is perfectly insulated what is the temperature of the air in the bomb at the end of filling process? Assume air is an ideal gas with constant specific heats in a ratio Cp/Cv = γ = 1.4 and constant R= 287 J/kg K.
for flow over a circular cylinder as shown below the velocity outside of boundary layer can be estimated to beux 2
the acceleration of a particle moving along a straight line is inversely proportional to its speed with the constant of
Find the diameter of a pipe to convey the superheated steam flowing into the mixing process if the speed of the steam is 20m/s and also ascertain the condition of the resulting mixture.
solid carbon reacts with steam to produce carbon monoxide and hydrogen. given an hc atom ratio of 11 and an oc atom
on an assembly line that fills 8-ounce cans a can will be rejected if its weight is less than 7.90 ounces. in a large
Determine the minimum coefficient of static friction between the crate and the truck so that the crate does not slide relative to the truck.
a completely mixed chemical reactor has an in fluent flow with conc. 150 mgl of a and a flow rate of 100 galmin 380
two machines are used for filling glass bottles with a soft-drink beverage. the filling process have known standard
a piston d50mm sits on top of a fluid s.g.11 connected to a 10mm diameter tube open to the atmosphere. a if the fluid
Estimating fractions of a cost, Estimate what fraction of the price of a pocket calculator is required to cover the cost of developing the product.
The system shown anchors a stanchion of cable-suspended roof. If the tension in cable AB is 900 kN, what are the tensions in cables EF and EG?
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