Recent content by kristibella

...I'm slightly embarrassed because I completely looked over that detail. Thank you for pointing that out.

Homework Statement A beam of protons is accelerated to a speed of 5.0x10^6 m/s in a particle accelerator into a uniform magnetic field. What B field perpendicular to the velocity of the proton would cancel the force of gravity and keep the beam moving exactly horizontally? Homework...

Homework Statement An electron travels at a speed of 2.0x10^4 m/s through a uniform magnetic field whose magnitude is 1.2x10^-3 T. What is the magnitude of the magnetic force on an electron if its velocity and magnetic field: a. are perpendicular? b. make an angle of 45 degrees? c. are...

Homework Statement 0.54 mol of argon gas is admitted to an evacuated 90 cm3 container at 10 o C. The gas then undergoes an isochoric heating to a temperature of 400 oC. What is the final pressure of the gas (in kPa)?Homework Equations PV = nRTThe Attempt at a Solution P(9.0x10-5 m3) = (.54...

I found the correct answer so thanks for your help!

According to the book, which was written by the professor, Q = W in an isothermal process. This was all that I could find on isothermal processes.

This class is supposed to be Trig based, Calc is not a prerequisite. This isn't the first time that I've been expected to know calculus, though.

I'm sorry, what does W = \int P(V) dV mean? I know that is something with integral calculus but I haven't taken that class yet so I'm not exactly sure what it means.

Thank you for point it out! I found the correct answer of 0.084 J/K.

Homework Statement In a well-insulated calorimeter, 1.0 kg of water at 20o C is mixed with 1.0 g of ice at 0o C. What is the net change in entropy Delta Ssys of the system from the time of mixing until the moment the ice completely melts? The heat of fusion of ice is Lf=3.34x105 J/kg. Note...

Homework Statement I have most of these figured out (it is 4 and 5 that are causing me problems) but I figured that I may as well post the answers that I have already gotten because they may be relevant. The answers that I got are in bold. 1. Which of the curves in the figure represents an...

Homework Statement A. What is the sound intensity of a whisper at a distance of 3.5 m, in W/m2? I know that a whisper is approximately 20 dB and P = 10-10 W/m2. B. What is the corresponding sound intensity level in dB?Homework Equations I = Power/[(4pi)(3.5m)2) dB = 10 log (I/Io). The...

Homework Statement A 200 g ball attached to a spring with spring constant 2.50 N/m oscillates horizontally on a frictionless table. Its velocity is 18.0 cm/s when x = -5.00 cm. A. What is the amplitude of oscillation? B. What is the speed of the ball when x = 3.00 cm? Homework Equations A...

Thank you so much! I wasn't sure if the speed of sound had anything to with this. Those websites were extremely helpful and I quickly got to the correct answer of 854.5 Hz.

Homework Statement A certain organ pipe, open at both ends, produces a fundamental frequency of 291 Hz in air. If the pipe is filled with helium at the same temperature, what fundamental frequency fHe will it produce? Take the molar mass of air to be 28.8 g/mol and the molar mass of helium...