1.1 What type of radiation on the electromagnetic spectrum are the colors of light an example of?
Visible radiation
The colors of light listed fall within the visible spectrum.
1.2 At what speed does light travel?
3.0 × 108 m/s
This is the fundamental speed of light in a vacuum.
1.3 Describe the relationship between the wavelength and frequency of a light wave.
Wavelength and frequency are inversely proportional: as wavelength increases, frequency decreases.
1.4 Describe the relationship between photon energy and frequency.
Photon energy is directly proportional to frequency. The formula is E = hf.
1.5 Which color has the longest wavelength?
Red
1.6 Calculate the typical frequency range of yellow light.
5.13 × 1014 Hz to 5.28 × 1014 Hz
2.1 Which sphere has an excess of electrons?
Z
2.2 Calculate the number of excess electrons on sphere Z.
4.375 × 1010 electrons
2.3 Will spheres Y and Z attract or repel?
They will attract at first but repel if charge is transferred.
2.4 Name the law that applies when charge is shared.
Law of Conservation of Charge
2.5 Calculate the charge on each sphere after separation.
-0.5 × 10-9 C each
2.6 Will the spheres attract or repel after separation?
They will repel because both are negatively charged.