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Physics 30: Assignment 10, Divided into 2 parts:Part One: Electromagnetic Radiation and Part Two: The Speed of Light. With Verified answers

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Part One: Electromagnetic Radiation Part One of this assignment is worth 11 marks. The value of each question is noted in parentheses in the left margin. Note: The answer areas will expand to fit the length of your response. 1. (1) Medical technologies related to imaging and cancer treatment use high-frequency EMR. a. Explain why high frequency EMR is harmful. Answe r: (1) b. What precautions should medical personnel take when working with these types of technologies? Answe r: 2. A student measures the period of an electromagnetic wave as 3.64 x 10-15 s. (1) a. What is the frequency of the wave? Answe r: (1) b. What is the wavelength of the wave? Answe r: (1) c. To which part of the electromagnetic spectrum does the wave belong? Answe r: 3. Two competing models explaining electromagnetic radiation are the wave model and the particle model. Complete the two statements below by filling in the missing word(s). a. Regarding the wave model, the greater the intensity, the larger the _____ of the Part Two: The Speed of Light Part Two of this assignment is worth 20 marks. The value of each question is noted in the left margin in parenthesis. Note: The answer areas will expand to fit the length of your response. (3) 1. If you know Earth’s orbital diameter and can measure the difference in eclipse times for Jupiter’s moon, Io, you can calculate the speed of light. If an eclipse of Io occurred 24 min later than expected and Earth’s orbital diameter is 3.0 x 1011 m, what is the speed of light? Answe r: (3) 2 . As shown below, a rotating mirror with 16 sides was used to measure the time it took light to travel 3.5 km to a concave mirror and back. At what frequency did the rotating mirror need to turn such that it made 1/16th of a rotation in the time it took light to travel the 3.5 km and back again? Answe (3) 3. A rotating mirror with 8 sides rotates at 545 Hz in an experiment similar to that of Michelson. How far away should the distant concave mirror be placed to correctly measure the speed of light? Answe r: (3) 4. If the frequency of rotation of an 8-sided rotating mirror is 1.00 x 103 Hz and the distance between it and a fixed concave mirror is 17.5 km, calculate the speed of light. Answe r: 5. (1) Microwaves, being a form of EMR, travel at the speed of light and are governed by the universal wave equation v = fλ. A group of students partially melted marshmallows in a microwave oven operating at a frequency of 2.50 x 109 Hz. The students found that the distance between adjacent melted spots equaled one half the wavelengt

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Physics 30: Assignment 10 Part One: Electromagnetic Radiation Part One of this assignment is worth 11 marks. The value of each question is noted in parentheses in the left margin. Note: The answer...

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