http://phet.colorado.edu/en/simulation/wave-interference
Tuesday, September 27, 2011
Blogpost 4: Wave Interference
Make sure that the following simulation runs for next week. Play with the simulation and get a sense of what it is showing.
Blog Post 3: Waves
http://phet.colorado.edu/
Simulations: http://phet.colorado.edu/en/simulation/wave-on-a-string
Questions:
1. which takes more energy, slow up and down, or fast up and down?
2. fast frequency corresponds to low energy or high energy?
3. Determine the frequency of the provided wave(frequency 27, amplitude 50)in Hz?
4. Determine the frequency of the provided wave(frequency 100, amplitude 50) in Hz?
5. Determine the frequency of the provided wave(frequency 27and amplitude 100) in Hz.
6. What is the wavelength of the provided wave(frequency 27, amplitude 50)in cm?
7. What is the wavelength of the provided wave(frequency 100, amplitude 50)in cm?
8. Describe the relationships between energy, frequency and wavelength. Include descriptions for relationships of all three.
Tuesday, September 20, 2011
Blog Post 2: Unit Cell of NaCl
Post an image of your unit cell model on your blog.
Post the height, width and length of the unit cell in nm, angstroms, and meters.
Determine and post the mass of one cube of NaCl. Calculate and post the number of moles of NaCl in one cube. Calculate and post the number of NaCl molecules in one cube of salt.
Determine the dimension of one cube of salt. Based on the dimensions determined by the unit cell model, determine and post the number of NaCl in one cube of salt.
Blog Post 1: Describe 10 nm and mole of atoms
On your blog, post your description of 10 nm and a mole of atoms.
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