A hobbyist building a radio needs a 150- resistor in her circuit, but has only a 220-, a 79-, and a 92-resistor available

Heat escapes from the planet's surface into space by thermal radiation. Planets radiate almost entirely in the wavelength range of the a. visible. b. infrared. c. ultraviolet. d. radio. e. none of the above

Use any web server with MySQL and PHP support (free hosted or anything else available) to create a small MySQL database (database/table definition provided below). Also create a web interface to manipulate this database. In particular the web interface should enable users to insert, select,...

Electromagnetic radiation is more common than you think. Radio and TV stations emit radio waves when they broadcast their programs; microwaves cook your food in a microwave oven; dentists use X rays to check your teeth. Even though they have different names and different applications, these types...

An important news anouncement is transmitted by radio wavs to people who are 100 km away, sitting next to their radios, and by sound waves to people sitting across the newsroom, 3.0 m from the newscaster. Who receives the news first? Take he speed of sound in air to be 343 m/s.

What is the wavelength of a 105.7 MHz station on FM radio (88 MHz to 108 MHz)?