Recent content by mbm

Thnx SammyS! just needed a little more info!

Homework Statement Why 220-V circuits used for such devices as electric clothes dryers and stoves? What differences do you expect to find in the wire used for these circuits compare to 120-V lines? Homework Equations The Attempt at a Solution clueless

the bbl/day quantity is a fuel requirement for a 1000MW power plant I was giving the problem some thought, the 1000MW can be converted to SCF/year and afterwards use the equation efficiency= output/input to obtain the input in SCF/year instead of using the SCF/day

Homework Statement a gas fired turbine generator for producing electricity has an efficiency of about 50%. how many cubic feet would be needed to produce 1000MW for one year. Homework Equations 2.4 x 10 ^8 SCF/day is the natural gas required for the power plant input = 2.4x10^11...

Homework Statement For a gasification project being planned, 26000tons of coal per day will be used to produce 250000000 cubic ft per day of natural gas. if the coal is rated at 8700btu/lb and the gas at 950btu/cu ft. what will the efficiency will be? Homework Equations efficiency =...

Homework Statement suppose you had to carry ten 30lb concrete blocks up a 24ft ladder, to build a chimney. if you were paid for the work that you did on the blocks at the same price as electrical energy costs (14 cent kWh). how much money would you make from this job. Homework Equations...

thnx :P

Homework Statement Suppose you left a 100w light bulb on continuously for one month. If the electricity generation and transmission efficiency is 30%, how much chemical energy (in joules) was wasted at the power plant for this oversight? if the fuel consumption for one meal in China using...

thnx! I now understand!

Homework Statement what is the kinetic energy of a 3000lb car traveling at a 60mph (pounds are not units of mass) Homework Equations KE=1/2* mass * velocity ^2 The Attempt at a Solution pounds are the units of force but to calculate the mass I am missing some data unless I'm...