Friday
April 18, 2014

Posts by NeedHelp!


Total # Posts: 8

Beginning Chem.
A. What is the frequency of a photon with a wavelength of 8.35 multiplied by 10^-5 m? (The speed of light in a vacuum is 2.998 multiplied by 108 m/s. Planck's constant is 6.626 multiplied by 10^-34 J·s.) B. What is the wavelength of a photon with a frequency of 6.00...

Beginning Chem.
A. What is the frequency of a photon with a wavelength of 8.35 multiplied by 10-5 m? (The speed of light in a vacuum is 2.998 multiplied by 108 m/s. Planck's constant is 6.626 multiplied by 10-34 J·s.) B. What is the wavelength of a photon with a frequency of 6.00 m...

Physics
just to clairify, you're suffesting that there is no tension when the rock is at the top of the swing?

Physics
Oh, 'at the top' great, thanks for your help :)

Physics
Oh, so the Centripetal force= mg how though?

Physics
A rock of a mass 0.2kg is attatched to a 0.75m long string and swung in a vertical plane. What is the slowest speed that the rock can travel and still maintain a circular path. so, i started with the following equation: Fc= mv2/r but where do i go from there to solve for v(wha...

Math
multiply each term by 3, and solve for y. 3y + 3(5/3) = 3x + 6 3y = 3x + 6 - 5 3y = 3x + 1 3y/3 = 3x/3 + 1/3 y= x + 1/3

science
Well, work= force x displacement (as you stated) but if he lifts his pencil 20 cm, then lowers it back down to 20 cm, his displacement= 0 therefore, he did 0 joules of work

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