Engineering, 28.11.2019 05:31 HarryPotterhead7
You can purchase a 15-watt compact fluorescent lamp for $1 that is rated to last 10,000 hours. this lamp provides the same light output as a 75-watt incandescent lightbulb that costs $0.50 and lasts 1000 hours. based on an electric energy cost of $0.30/kwh, calculate the money saved over the life of the fluorescent lamp by using it instead of the conventional lightbulb. include the cost of the lightbulbs.
Answers: 3
Engineering, 03.07.2019 14:10, volleyballfun24
If the thermal strain developed in polyimide film during deposition is given as 0.0044. assume room temperature is kept at 17.3 c, and thermal coefficient of expansion for the film and the substrate are 54 x 10^-6c^-1 and 3.3 x 10^-6c^-1respectively. calculate the deposition temperature.
Answers: 3
Engineering, 04.07.2019 18:10, viicborella
Steel is coated with a thin layer of ceramic to protect against corrosion. what do you expect to happen to the coating when the temperature of the steel is increased significantly? explain.
Answers: 1
Engineering, 04.07.2019 18:10, winterblanco
The higher the astm grain-size number, the coarser the grain is. a)-true b)-false
Answers: 3
Engineering, 04.07.2019 18:10, soreese02
An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature
Answers: 2
You can purchase a 15-watt compact fluorescent lamp for $1 that is rated to last 10,000 hours. this...
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