Recent content by chawki

I' not sure, they just asked what's the tension in the robe. I think the tension at both edges of the robe is the same?

It is distributed.

Homework Statement An object 50kg is hanged with a wire that wights 12,2kg Homework Equations what's the tension in the robe The Attempt at a Solution W - T = 0 (50+12,2)* 9,81 = 0 T = 610.182 N

I=50/2.34=21.36Amperes P=2.34*(21.36)2 P=1067.62 watt somehow it looks the same answer as the one posted in post #1

yeah i think i made a mistake :/ but we don't have I

no it's 7 Ohms. sorry for the typing mistake.

Homework Statement A 200m long copper wire, with cross section area of 1.5mm2, is connected with a 10Ω resistor in a series circuit, and the supply voltage is 50V. Homework Equations Find the power loss in the copper wire, when ρ=0.0175 Ωmm2/m The Attempt at a Solution R=*L/A...

Homework Statement How many resistors, R = 70 ohms can be connected in a series circuit when the maximum power loss of the circuit is 1800W. and the voltages supply is 127V Homework Equations Number of resistors! The Attempt at a Solution P = V2 / x*R x*7=1272/1800 x=1.28 so...

wow, so the displacement is 40m ? and therefore the average velocity= 40/50 = 0.8 m/s ?

I don't get it :(

63m ?

well, that displacement is 189m ?

im still thinking about it, i think i need some law

Homework Statement A runner travels 1,5 laps around a circular trackin a time of 50s. The diameter of the track is 40m and its circumference is 126m. Homework Equations a) Find the average speed of the runner b) Find the magnitude of the runner's average velocity. The Attempt at a...

I don't like your attitude. It was my guess, I had about 10 seconds left, and I thought ''he has at least 20, so i wrote 20 students'' Not much time to think about it or to do fraction calculations. You can't just use the fact of being a mentor and suspect things on me. Keep your words...