Questions from Modern Physics

Q: If a pendulum has a period of 2.5 s on

If a pendulum has a period of 2.5 s on earth, what would be its period in a space station orbiting the earth? If a mass hung from a vertical spring has a period of 5.0 s on earth, what would its perio...

Q: Observations of this planet over time show that it is in a

Observations of this planet over time show that it is in a nearly circular orbit around its star and completes one orbit in only 9.5 days. How many times the orbital radius r of the earth around our s...

Q: If we model the vibrating system as a mass on a spring

If we model the vibrating system as a mass on a spring, what is the mass necessary to achieve the desired resonant frequency when the tip is not interacting with the surface? (a) 25 ng; (b) 100 ng; (c...

Q: In the model of Problem 14.94, what is the

In the model of Problem 14.94, what is the mechanical energy of the vibration when the tip is not interacting with the surface? (a) 1.2 × 10-18 J; (b) 1.2 × 10-16 J; (c) 1.2 × 10-9 J; (d) 5.0 × 10-8 J...

Q: By what percentage does the frequency of oscillation change if ksurf =

By what percentage does the frequency of oscillation change if ksurf = 5 N/m? (a) 0.1%; (b) 0.2%; (c) 0.5%; (d) 1.0%.

Q: The speed of sound in air at 20°C is 344

The speed of sound in air at 20°C is 344 m/s. (a) What is the wavelength of a sound wave with a frequency of 784 Hz, corresponding to the note G5 on a piano, and how many milliseconds does each vibrat...

Q: Provided the amplitude is sufficiently great, the human ear can respond

Provided the amplitude is sufficiently great, the human ear can respond to longitudinal waves over a range of frequencies from about 20.0 Hz to about 20.0 kHz. (a) If you were to mark the beginning of...

Q: On December 26, 2004, a great earthquake occurred off the

On December 26, 2004, a great earthquake occurred off the coast of Sumatra and triggered immense waves (tsunami) that killed some 200,000 people. Satellites observing these waves from space measured 8...

Q: Sound having frequencies above the range of human hearing (about 20

Sound having frequencies above the range of human hearing (about 20,000 Hz) is called ultrasound. Waves above this frequency can be used to penetrate the body and to produce images by reflecting from...

Q: (a) Audible wavelengths The range of audible frequencies is from

(a) Audible wavelengths The range of audible frequencies is from about 20 Hz to 20,000 Hz. What is the range of the wavelengths of audible sound in air? (b) Visible light. The range of visible light e...