An important news announcement is transmitted by radio waves to people who are 85 km away, sitting next to their radios, and by sound waves to people sitting across the newsroom, 3.0 m from the newscaster. Calculate the time for each signal to reach each group of people, then determine who receives the news first …Listeners or people in the newsroom?

An important news announcement is transmitted by radio waves to people who are 85 km away, sitting next to their radios, and by sound waves to people sitting across the newsroom, 3.0 m from the newscaster. Calculate the time for each signal to reach each group of people, then determine who receives the news first …Listeners or people in the newsroom?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter16: Electromagnetic Waves

Section: Chapter Questions

Problem 98AP: A radio station broadcasts its radio waves with a power of 50,000 W. What would be the intensity of...

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Ch. 33
When the NASA Rover Spirit successfully landed on Mars in January of 2004, Mars was 170.2 × 106 km from Earth. Twenty-one days later, when the Rover Opportunity landed on Mars, Mars was 198.7 × 106 km from Earth. A) How long, in minutes, did it take for a one-way transmission to the scientists on Earth from Spirit on its landing day? B) How long, in minutes, did it take for scientists to communicate with Opportunity on its landing day?