Final answer:
The question deals with Physics concepts related to electromagnetic phenomena, data transmission, and wave properties. High school students studying Physics would learn to solve such problems by applying formulas to calculate data transmission times, wave frequencies, and wavelengths.
Step-by-step explanation:
The problem pertains to a Physics subject, specifically electromagnetic phenomena and calculations involving data transmission speeds and wave properties. This would typically be covered in a high-school level physics class. Let's address and understand each part of the problem.
Problem 79:
The time to transmit one bit of data at a rate of 75 Mbps can be found by taking the reciprocal of the data rate: time = 1 / (75 x 10⁶) seconds per bit. To compare this with the time difference caused by a WiFi signal reflecting off a wall, you would need to calculate the extra distance the signal travels (16 meters round trip) and divide by the speed of light to find the time delay.
Problem 80:
For a broadcasting antenna that is 50 meters tall to be one-fourth the wavelength of the broadcast signal, you can use the formula λ = 4 * height to find the wavelength, then use the speed of light to find the frequency. Whether it's AM or FM depends on the resulting frequency value.
Problem 81:
To find the wavelengths of different electromagnetic waves, you use the formula λ = c / f, where λ is the wavelength, c is the speed of light, and f is the frequency of the wave. X-rays, yellow light, and gamma rays will have different wavelengths based on their frequencies.
Understanding these concepts is crucial in Physics, allowing us to comprehend how data is transmitted and processed in our daily lives through various forms of electromagnetic waves.