Recent content by sckeen1988

A scientist notices that an oil slick floating on water when viewed from above has many different rainbow colors reflecting off of the surface. She aims a spectrometer at a particular spot, and measures the wavelength to be 750 nanometers (in air). The index of refraction of water is 1.33 The...

I can't think of any reason that part B.) shouldn't be 12, but it is 13.7cm, and I have no idea how A.) is 12. I do not know the matrix form

you are right on so far

First, mg is acting against the initial motion of the ball, so it should be negative. From that it may be a good place to start to solve for the initial net acceleration of the ball. Then remember that a=dv/dt

The left end of a long glass rod 6.00cm in diameter has a convex hemispherical surface 3.00cm in radius. The refractive index of the glass is 1.60. Distances are measured from the vertex of the hemispherical surface. A.)Determine the position of the image if an object is placed in air on the...

Thanks for the help, forgot to reply at the time due to my astonishment that I had not thought of that.

Just realized my problem was that my work was for a plane, not a line of charge. I'm not sure how to solve this for a line of charge though

The electric field 0.475m from a very long uniform line of charge is 830 N/C. How much charge is contained in a section of the line of length 3.00cm? My solution: the Electric field from an infinite plane is E=σ/(2*ε0), so σ=E*ε0*2=1.47*10^-8 3.00cm=.03m...

It was on a mastering physics quiz, viewing the right answer was blocked.

Two small aluminum spheres, each of mass 0.0250 kilograms, are separated by 80.0 centimeters. How many electrons does each sphere contain? (The atomic mass of aluminum is 26.982 grams per mole, and its atomic number is 13.) The attempt at a solution I said that there are 6.02*10^23...

ANGER! I knew I was forgetting something really easy, like adding and subtracting one. Thanks for the help

[b]1. The Problem comes down to what I think is a fairly simple integral, I just can't figure it out. int(x^2/(1+x^2) I know this is x-arctan(x)+c, but cannot figure out how. I tried subbing in u for x^2, this didn't really help me with a direction to take though.

Thanks a lot for your help.

How can I get volume from that?

Homework Statement At 273K and .01 atm, the density of a gas is 1.24*10^-5 g/cm^3. Find the Vrms for the gas molecules. Homework Equations Vrms=sqrt(3RT/M) Density=m/V The Attempt at a Solution I tried to relate the density given to the molar mass or the number of moles...