GGR378H5 Final: CHAPTER 6 EXAM REVIEW

When an ion channel opens in a cell wall, monovalent (charge e) ions flow through the channel at a rate of 2.9 10⁷ ions/s. What is the current through the channel?

Television broadcasts a frequency of 50 MHz for Channel 2. What is the wavelength for this channel?

There are 12 VHF channels (channel 2-13) that lie in a frequencyrange from 54 MHz to 216 MHz. Each channel has a width of 6 MHz,with the two ranges 72-76 MHz and 88-174 MHz received for non-TVpurposes.
(Channel 2, for example, lies between 54 and 60 MHz).

1.) Calculate the wavelength range Δλ for channel 2. The speedof light is 2.99792 × 10⁸ m/s .

Answer in units of m.

2.) Calculate the wavelength range Δλ for channel 5.

Answer in units of m.

3.) Calculate the wavelength range Δλ for channel 11.

Answer in units of m.