5. ELECTRICITY An electrician uses the
formula W = IR , where W is the power
in watts, I is the current in amperes, and
R is the resistance in ohms.
a. Find the power in a household circuit
that has 20 amperes of current and
5 ohms of resistance.
b. If the current is reduced by one half,
what happens to the power?

Awavelength of 610 nm was found to be the most intense wavelength emitted by copper. answer the following questions about this wavelength of light. a) what is this wavelength in cm? b) what is the frequency that corresponds to this wavelength? c) what is the energy of light of this wavelength? d) what is the wavenumber corresponding to this wavelength?