Recent content by Luis2101

Nevermind. I found a link in the archives and figured it out from there. Here it is if anyone needs it: https://www.physicsforums.com/showthread.php?t=55853

Two moles of N2 gas undergo the cycle abcd. The pressure of the gas in each state is pa = pd = 5500 Pa; pb = pc = 1500 Pa. Note that 5500 Pa > 1500 Pa. The volume of the gas in each state is Va = Vb = 1.80m^3 ; Vc = Vd = 8.70m^3. Note that 8.70 m^3 > 1.80 m^3. The gas may be...

Yeah, I used the wrong value for the heat capacity of ice. (Used 33400 instead of 334000).

Ahh... I'm sorry AM, I see what you're saying now. I'll work on it a bit.

An open container holds 0.550 kg of ice at -15 Celsius. The mass of the container can be ignored. Heat is supplied to the container at the constant rate of 800 J/min for 500 min. A) After how many minutes does the ice start to melt. This part I calculated and got correct, it's 21.7 min...

I've no idea, none of that information was provided... Did you look at the picture?

Two loudspeakers, A and B, are driven by the same amplifier and emit sinusoidal waves in phase. Speaker B is 2.00 m to the right of speaker A. Consider point Q along the extension of the line connecting the speakers, 1.00 m to the right of speaker B. Both speakers emit sound waves that travel...

-_- Wow. Lol. I looked over that equation like, 5 different times too, I can't believe I didn't see that. Thanks. -Luis

Question Details: A cowgirl ties one end of a 10.0-m-long rope to a fence post and pulls on the other end so the rope is stretched horizontally with a tension of 140 N. The mass of the rope is 0.800 kg. a) What is the speed of transverse waves on the rope? b) If the cowgirl moves the...

Ohhh I see... I have to use radians for angular acceleration otherwise my Torque value is wrong. Cool, thanks a lot man. -L.

I had trouble with the question intially also, because of the wording, but it makes sense: there are two forces that act on the cylinder while the bucket is falling, its own weight, and the Tension of the bucket. By adding these, you get the total force that's acting on the cylinder. -L.

That makes perfect sense... But... I solved for Friction using torque/radius or (3.5)/(.255) = 13.7N I then tried to solve for the coefficient of friction using the relationship: Friction = Mu*Normal Force So 13.7/160 = 0.0856 for coefficient of friction... which is wrong. Is that...

A grindstone in the shape of a solid disk with diameter 0.510 and a mass of m= 50.0kg is rotating at w = 900rev/min. You press an ax against the rim with a normal force of N= 160N, and the grindstone comes to rest in 7.00sec. Find the coefficient of friction between the ax and the...