Recent content by chicagobears34

Homework Statement The electric potential along the x-axis is V=100e^(−2x/m), where x is in meters. Find Ex at x=1.0m and Ex at x=2.1mHomework Equations V=Ed Ex = dV/dx (?) The Attempt at a Solution I took the derivative of V and got (-200/m)e^(-2x/m) I don't know what m is and I'm just not...

Hi, I have a question regarding a dynamics question that be found here:http://by.genie.uottawa.ca/~mess/files/MCG_2107/MCG2107_M2005_p2.pdf, It is the first problem on that link (labeled number 2.) I did ƩFx, ƩFy, ƩMG which allowed me to find angular acceleration, frictional force, and...

oh I found one equation E=kQ/d^2 could that be it?

Do I maybe set Kqq/ r^2 = Eq and solve for the q? We never covered the material in class yet, but the homework was assigned. Not exactly sure what other equations relate r with q other than kqq/r^2

Part A: The average distance an electron travels between collisions is 2.0μm . What acceleration must an electron have to gain 2.3×10^−18J of kinetic energy in this distance? a=1.3x10^8 m/s^2 Part B:What force must act on an electron to give it the acceleration found in part A? F=1.2x10^-12 N...

this was a 4part question and the previous parts solved for the acceleration, force, and electric field. The parts usually needed variables from the previous part to solve the answer. I got the field and force right and I figure they might need to be used to solve for the charge needed to...

This class is just physics II and should just be a Coulomb's law problem, but I'm not sure what other ways to approach the problem other than the way I already tried

Homework Statement Suppose a free electron in air is 1.1cm away from a point charge. What minimum charge must this point charge have to cause a breakdown of the air and create a spark? I already have the Electric field and force, which I solved to be E=7.2x10^6 N/C F=1.2x10^-12 N...

yes i was given the linear density, so I shouldn't have done m/L that's what I what was doing wrong. Thanks

Homework Statement A particularly beautiful note reaching your ear from a rare Stradivarius violin has a wavelength of 39.1 cm. The room is slightly warm, so the speed of sound is 344 m/s. If the string's linear density is 0.560g/m and the tension is 160N , how long is the vibrating section...

thanks collinsmark! totally forgot about that :p

Homework Statement A container of gas at 3.90atm pressure and 136 ∘C is compressed at constant temperature until the volume is halved. It is then further compressed at constant pressure until the volume is halved again. What is the final temperature of the gas? Homework Equations PV=nRT...

well, it worked for mastering physics in this particular problem. not sure if it would apply for all damping pendulums

The formula be Amax = Ae^(-bt/2m) A = initial amplitude b=damping constant t=time in sec m=mass in kg

Homework Statement In a science museum, a 100kg brass pendulum bob swings at the end of a 13.0m -long wire. The pendulum is started at exactly 8:00 a.m. every morning by pulling it 1.7m to the side and releasing it. Because of its compact shape and smooth surface, the pendulum's damping...