Recent content by jaded18

Consider a very, very long rod (length L) with total negative charge Q0, uniformly spread out. The rod is located in the plane of the page, is parallel to the top of the page, and moves right‐ward with a speed v. There is a negative charge Q1 located a small distance D away from the rod...

this question is confusing me to no end. how would i go about solving this? i know that i need to find the total force as the sum of the forces on each straight segment of the wire loop and i know that my first step is to calculate the magnitude of the force F_1 on the section of the loop...

first of all, i don't need the angular velocity. i need the rotational frequency. and also, the equations are all very real. it turns out that my ans was right and it was a mistake in the ans key... So yeah won't double post in the future, it's pretty much useless anyways.

no one?

I don't understand how the energy relates to frequency! Degrees of freedom for diatomic molecules: 5. energy of each one = 0.5k_B(T)= 0.5(1.38*10^-23 J/K)(25+273K)=2.056*10^-21= 0.5I(angular velocity)^2... what is I?. How come what i did in the beginning with the equation i found didn't work out...

nvm i got it

[SOLVED] please explain this entropy change formula for me?? An aluminum bar of mass 2.00 kg at 300 Celsius is thrown into a lake. The temperature of the water in the lake is 15.0Celsius; the specific heat capacity of aluminum is 900 J/(kg*K). The bar eventually reaches thermal equilibrium with...

i found this equation relating frequency and veolcity --> angular velocity=2(pi)f but i DONT UNDERSTAND why I'm not getting the right answer. i get velocity to be 4.2057*10^12 m/s and i SHOULD be able to get frequency by dividing it by 2pi, but f=6.69*10^11 is not right! whats wrOong?!

all righty. i found this equation relating frequency and veolcity --> angular velocity=2(pi)f but i DONT UNDERSTAND why I'm not getting the right answer. i get velocity to be 4.2057*10^12 m/s and i SHOULD be able to get frequency by dividing it by 2pi, but f=6.69*10^11 is not right! whats wrOong?!

what do i do with the rotational speed that i calculated to get rotational frequency??' molecule has moment of inertia I about the axis and is rotating with angular velocity omega about that axis with associated rotational kinetic energy (1/2) I omega_x^2

[SOLVED] Interference of Sound Waves Two loudspeakers, A and B, are driven by the same amplifier and emit sinusoidal waves in phase. The frequency of the waves emitted by each speaker is 172 Hz. You are 8.00 m from speaker A. Take the speed of sound in air to be 344 m/s. What is the closest...

What is the typical rotational frequency f_rot for a molecule like N_2 (nitrogen) at room temperature (25 C)? Assume that d for this molecule is 1 angstrom = 10^{-10} m. Take the atomic mass of N_2 to be 4.65 * 10^{-26} kg. _________________________________ I know that the rms angular speed...

My answer would be correct if both reflected rays had pi phase shifts... but they don't When light reflects off a surface with a higher index of refraction, it gains an extra shift of half of a wavelength. But if two beams reflect, they will both get a half-wavelength shift, canceling out that...

Ok, so when light reflects off a surface with a higher index of refraction, it gains an extra shift of half of a wavelength. Therefore: 2ndcosbeta=(m)lamda? is cosbeta = 1 still? then why am i not getting the right answer when i solve for d??

Suppose the oil had an index of refraction of 1.50. What would the minimum thickness t be now? Do I use the same method but instead change the refractive index?