Q1)Calculate the frequency of each of the following wave lengths of electromagnetic radiation.
Part A
12.24 cm (wavelength of microwave oven)
Part B
0.0520 nm (a wavelength contained in medical X-rays)
Q2)Calculate the energy of a photon of electromagnetic radiation at each of the following frequencies.
Part A
102.2 MHz (typical frequency for FM radio broadcasting)
Express your answer in joules using four significant figures.
Part B
834.9 MHz (common frequency used for cell phone communication)
Express your answer in joules using four significant figures.
Q3)A heat lamp produces 25.0 watts of power at a wavelength of 6.0 μm .
Part A
How many photons are emitted per second? (1 watt = 1 J/s)
Express your answer using two significant figures.
Q4)What is the de Broglie wavelength of an electron traveling at 1.05×105 m/s ?
Express your answer with the appropriate units.
Answer:
