Frequency and Wavelength Calculations

The video tutorial covers practice problems related to the speed of light, focusing on the equation speed of light = wavelength x frequency. It explains unit conversion from nanometers to meters, calculating frequency from given wavelength, and handling significant figures. The tutorial also discusses using textbook charts to identify properties of light waves, specifically focusing on red light. Example problems are provided to illustrate these concepts.

What is the equation for the speed of light?

• Speed of light = distance / time

• Speed of light = wavelength x frequency

• Speed of light = force / area

• Speed of light = mass x acceleration

How do you convert 700 nanometers to meters?

• 700 x 10^-9 meters

• 700 x 10^9 meters

• 700 x 10^6 meters

• 700 x 10^-6 meters

If the speed of light is 3 x 10^8 m/s and the wavelength is 700 nm, what is the frequency?

• 4 x 10^14 Hz

• 6 x 10^14 Hz

• 3 x 10^14 Hz

• 5 x 10^14 Hz

What is the frequency of light with a wavelength of 400 nm?

• 6 x 10^14 Hz

• 8 x 10^14 Hz

• 7.5 x 10^14 Hz

• 9 x 10^14 Hz

What information can be found on page 120 of the textbook?

• A diagram of the solar system

• A table of mathematical constants

• A chart of electromagnetic waves

• A list of chemical elements

What is the frequency of red light with a wavelength of 728 nm?

• 6.12 x 10^14 Hz

• 5.12 x 10^14 Hz

• 3.66 x 10^14 Hz

• 4.12 x 10^14 Hz

How is the frequency of red light determined using the chart?

• By finding the midpoint between 14 and 16 on the chart

• By using a ruler

• By measuring the amplitude

• By calculating the speed of sound

What is the speed of light for red light using the chart?

• 6.28 x 10^8 m/s

• 7.28 x 10^8 m/s

• 5.28 x 10^8 m/s

• 3.00 x 10^8 m/s

What is the importance of using scientific notation in these calculations?

• It simplifies large numbers

• It is not important

• It makes calculations more complex

• It is only used for small numbers

What is the correct way to input 10^15 in a calculator?

• Press 1, then the times 10 button, then 15

• Press 15, then the times 10 button, then 1

• Press 1, then the times 15 button, then 10

• Press 10, then the times 1 button, then 15