When tuning a radio to a particular station, you match the frequency of the internal electrical circuit with the frequency of the wanted radio station. What principle is being employed?
A) forced vibrations
B) resonance
C) beats
D) reverberation
E) wave interference
Answer: B
Physics & Space Science
You might also like to view...
The study of energy levels in atoms is called
A) special relativity. B) general relativity. C) quantum mechanics. D) classical mechanics. E) particle physics.
Physics & Space Science
If you double the frequency of a vibrating object, its period
A) doubles. B) halves. C) is quartered.
Physics & Space Science
Which of the following is not a feature of the Sun's
surface? a) sunspots. b) prominences. c) flares. d) rills.
Physics & Space Science
You want to have an electron in an energy level where its speed is no more than 66 m/s
What is the length of the smallest box (an infinite well) in which you can do this? (h = 6.626 × 10-34 J ? s, mel = 9.11 × 10-31 kg) A) 5.5 µm B) 11 µm C) 2.8 µm D) 1.4 µm
Physics & Space Science