North Star, frequency of light, radio waves, underwater sun

North Star, frequency of light, radio waves, underwater sun

Assignment help: The distance to Polaris, the North Star, is approximately 6.44 x 10^18 m. If Polaris were to burn out today, how many years would it take to see it disappear? (b) How long does it take sunlight to reach Earth? (c) How long does it take a microwave signal to travel from Earth to the Moon and back? (The distance from Earth to the Moon is 3.84 x 10^5 km.)

The human eye is most sensitive to light of wavelength 5.50 x 10^-7 m, which is in the green-yellow region of the visible electromagnetic spectrum. What is the frequency of this light?

An important news announcement is transmitted by radio waves to people sitting next to their radios 100 km from the station, and by sound waves to people sitting across the newsroom, 3.00 m from the newscaster. Who receives the news first? Explain. Take the speed of sound in air to be 343 m/s.

Find the speed of light in (a) water, (b) crown glass and (c) diamond

An underwater scuba diver sees the Sun at an apparent angle of 45.0° from the vertical. What is the actual direction of the Sun?

A laser beam is incident at an angle of 30.0° from the vertical onto a solution of corn syrup in water. If the beam is refracted to 19.24° from the vertical, (a) what is the index of refraction of the syrup solution? Suppose the light is red, with vacuum wavelength 632.8 nm. Find its (b) wavelength, (c) frequency, and (d) speed in the solution.

Quality Assignments Help Website

Cost of your order


Why Choose Us

Top Quality and Well-Researched Papers

We ensure that all your instructions are followed to the letter. You are able to choose the level of interest; professional, college, or high school. We will assign a writer who will cover all your specifications.

Professional and Experienced Academic Writers

We have a team of well trained and experiences assignment writers who are PhD and master’s holders. Our writers are can handle more than 91 disciplines.

Free Unlimited Revisions

If your assignment is not covered to your expectation, you can send your order for revision. The order should be submitted before 10 days elapses for review You can contact our support team or login to your personal account to submit your request.

100% Money-Back-Guarantee

We ensure on-time delivery of your papers. For clarification purpose, we may contact you regarding deadline extension. In case you cannot provide us with more time, we guarantee a 100% refund.

Originality & Confidentiality

We use professional tools to ensure all assignment help documents you receive are free of plagiarism. Our editors ensure optimum review of all quotations in the text. We also ensure confidentiality in our service delivery.

24/7 Customer Support

Our team of experts is available 24/7 to ensure that you are provided with the top customer experience. Any time you need assignment help, you can reach us and get the best experience with ours services.

Our Services

You don’t have to struggle with your papers. You need ample sleep; our writers will cover you. We provide writing services in all disciplines.


Essay Writing Services

No matter what kind of academic paper you need and how urgent you need it, you are welcome to choose your academic level and the type of your paper at an affordable price. We take care of all your paper needs and give a 24/7 customer care support system.


Admission and Business Papers

An admission essay is an essay or other written statement by a candidate, often a potential student enrolling in a college, university, or graduate school. You can be rest assurred that through our service we will write the best admission essay for you.


Editing and Proofreading

Our academic writers and editors make the necessary changes to your paper so that it is polished. We also format your document by correctly quoting the sources and creating reference lists in the formats APA, Harvard, MLA, Chicago / Turabian.


Revision Support

If you think your paper could be improved, you can request a review. In this case, your paper will be checked by the writer or assigned to an editor. You can use this option as many times as you see fit. This is free because we want you to be completely satisfied with the service offered.