Recent content by Ogakor

anyone??

Ok, thanks rockfreak

Homework Statement The total consumption of electrical energy in Country A is about 1.5 x 1015 Joules/year. What is the average rate of electrical energy consumption in Watts? So, my friend and I were arguing. He said, 1.5 x 1015 is the answer. I said, since watts is equal to Joules /...

Homework Statement The human heart is a powerful and extremely reliable pump. Each day, it takes in and discharges about 7,500 liters or blood. If the work done by the heart is that of an average American female, 1.63m; and if the density of blood is 1.03 x 103 kg/cubic meter, a) How much...

Homework Statement Water is pumped from the ocean to a large reservoir on land. A total lift of 140m. At a rate of 60 cubic meters per hour and eject it with a speed of 65 m/s. If one cubic meter of sea water has a mass of 1,025 kg, find: a) The work done in lifting the water b) the work...

thanks rock.freak

Homework Statement A force of 720 N stretches a certain spring a distance of 15 cm. What is its force constant? If a 60-kg mass is hung on it, how far will it stretch? Solving for Force Constant given: F (Restoring Force) = 720 N ΔL (spring's elongation) = 15 cm x (1 m / 100 cm) = 0.15 m k...

No, this was my seatwork and I didn't get the answer.

Xor gate with negated input and negated output. The expected output is an XNOR gate. I can't get it with boolean algebra. My initial formula is: ((AB')' + (A'B)')' The expected output is: AB + (AB)' right? Please help me.

Sorry, I forgot to use another variable. w2x is w2 (cos theta). I forgot how my friend did it but I think his answer to letter A is 8.75(not sure though). His letter B is 6m/s2 (forgot the exact amount. acceleration is 6 point something)

Homework Statement Block A, B and C are placed as in the figure below and connected in ropes of negligible mass. Both A and B weighs 25N each and the coefficient of kinetic friction between each block and the surface is 0.35. The weight of Block C is 30.75774639 and it descends with constant...

Im so confused... is the 50.0N a weight or a force?

oh ok thanks. ^^

Sorry, I am so dumb when it comes to physics. Does this mean I'll use F = ma then solve weight from there?

Homework Statement A proud angler hangs her catch from a spring balance, which is supported from the roof of an elevator. a.) if the elevator has an upward acceleration of 2.45m/s2 and the balance reads 50.0N, what is the true weight of the fish? b.) Under what circumstances will the balance...