a mill requires 5000kW to operate at full capacity, produces 14tons of paper per hour, purchases electricty for $.10/kW*hr
There is a dam 10m high that supplies water to a turbine. the river can be used only if the flow is above 50 cubic ft/sec. efficiency of generator is 75%
how am i...
yea, i definitely still don't get it.. i found how many kg/sec it will be producing but how am i supposed to convert that to watts without knowing m^2/s that the mill is putting out?
the average velocity forumula is [f(b)-f(a)]/b-a, the avg. acceleration formula is essentially the same except that for the values of f(b) and f(a) you need to take the derrivative of the position equation to give the velocity values
ok, so I know that a paper mill requires 5000kW to operate at full capacity, the mill produces 14 tons of paper per hour, electricity is purchased at $.10/kW*hr, and the paper is sold at $5/kg.
knowing this i need to find how much electricity is need to produce 1kg of paper.
so far, I've...
the angles not given but i derrived it
the diameter of the wheel is 1m and the height of the step is .15m
so using the radius of the wheel, the heigt of the step and the defination of the tangent function i got 16.7degrees
here's the question as written:
A person is attempting to pull a large stone wheel up a step. The wheel has a mass of 300kg. Assuming the force the person applies is horizontal and at the certer of gravity, what imust the force be to start the wheel rolling over the curb?
alright, so i...
Two delivery men carry a crate up a flight of stairs that have an angle of 45 degrees. You may assume the crate is loaded evenly and has a mass of 200kg. Assuming the workers can only exert a force strait up with their hands on the boz, calculate the load that each worker is supporting. Who...
i don't see how this question give enough information to answer it..
"A lighter than air balloon and its load of passengers and ballast are floating stationary above the Earth. Ballast is the weight that van be dropped over board to make the balloon rise. The radius of the balloon is 6.25m...