An 11.0-w energy-efficient fluorescent lightbulb is designed to produce the same illumination as a conventional 40.0-w incandescent lightbulb. assuming a cost of $0.111/kwh for energy from the electric company, how much money does the user of the energy-efficient bulb save during 220 h of use?

Abucket full of water weights 4 kg and water well is 10m deep. a girl draws water from the well. it takes the girl 3 minutes to draw a bucket full of water from the well. what is the power of the girl?

Find the steady-state temperature at the center of the plate = /2, = /2) for sums of w from n=1 to n=19 (only odd values). find the value of n for which the change in /2, /2) is less than 1% from the value at the previous n. at this point, we consider the solution converged. does the value of the temperature at the center seem reasonable? in this part, the values of x and y are constant scalar values. you should produce a plot of the value of n on the horizontal and the estimate of the temperature at the center of the plate on the vertical. b. using the value of n (or larger) that resulted in convergence in part (a), create a contourf plot of the temperature distribution across the entire plate. use enough spatial subdivisions to create a useful plot. comment on the results. hint: you need to determine what “x” and “y” values to use to make your t matrix. i recommend using a different number of x and y values. use enough x and y values so that the plot is “smooth”.

Amars prototype carrying scientific instruments has a mass of 1060kg. a net force of 52000 n is applied to this roverat a test site on earth . what is the acceleration of the rover? solve the acceleration. force/ mass a =f/m