Recent content by Noor123

haha ok, so a is 273.15 so you're basically saying, PV = n R (t(°C) + a) 1) 22.98 = nRa 2) 31.18 = nR(100 + a) If we do 2-1 31.18 - 22.98 = 100Rn + nRa - nRa 8.20 = 100R (1 mol) R = 0.0820 L atm C and if we plug back into one of the equations, we get 22.98 L atm=...

C= value of Temp in C + 273.15 = value in K I have no idea what "a" is. I don't understand the meaning behind the given equation: T = t(°C) + a What's t(°C) ? and how are we supposed to use it to determine "a"? I'm so lost. :(

ohh well we usually do it in Kelvin, but the question asks for Celsius, so I guess we don't have to convert anything, no?

What do you mean?

Homework Statement Suppose that you measured the product pV of 1 mol of a dilute gas and found that pV = 22.98 L atm at 0°C and 31.18 L atm at 100°C. Assume that the perfect gas law is valid, with T = t(°C) + a, and that the value of R is not known. Determine R and a from the...

Got it! Thank a lot folks!

but how do you know that it's 0.005? or why do you choose it?

BUMP! does anyone know?

Uncertainty?? URGENT HELP How do you answer this? I totally don't get it. What do I do to calculate the uncertainty percentage?? Q. The number of significant figures reported for a measured value suggests a certain degree of precision. What is the relative uncertainty implied by the...

URGENT: rotatonal KE Two astronauts each having a mass of 54 kg are connected by a 10 m rope of negligible mass. They are isolated in space, orbiting about their centre of mass at speeds of 3.7 m/s. Calculate the rotational energy of the two astronauts. A. 739.3 J B. 1478.5 J C. 29.6 J...

Ok what about this? PLZ QUICK A solid sphere of mass 4.0 kg and radius 0.12 m starts from rest at the top of a ramp inclined 15 degrees, and rolls without slipping to the bottom. The upper end of the ramp is 2.7 m higher than the lower end. What is the linear speed of the sphere when it...

Plzz Hurrrrryyyy Folks!

omege final = 3.45 rad/sec omega initial = 2.094 rad/sec omega final = omega initial + alpha x delta t 2.094 = 3.45 + 5.9 alpha alpha = -0.230 torque = I x alpha mR^2 x alpha (0.1078) (-0.229) = -0.02468 ?? none of these answers

URGENT! rotational kinematics A record player is spinning at 33 rpm when the motor is switched off. After 5.9 seconds the angular speed has decreased to 20 rpm. Calculate the frictional torque if the record player can be treated as a solid wheel of mass 5.5 kg and radius 14 cm. A...

URGENT- Simple physics problem Homework Statement Is the Normal force applied to an object always equal to its weight? TRUE or FALSE Homework Equations Fg = - Fg I don't know if that's relevant or not... The Attempt at a Solution True?