0
Waves Vibrations and Oscillations
From pendulums, to sound, to Schrödinger's equation, waves and vibrational motion are of fundamental importance to all of the disciplines of physics. Please direct all questions concerning the causes, mechanics, applications, and significance of oscillatory behavior into this category.
5,382 Questions
How fast does light travel through acrylic?
it travels faster in water because it is less optically dense then acrylic
Which property do all electromagnetic waves have in vacuums?
All electromagnetic waves travel at the speed of light in a vacuum.
Yes, ants can sense vibrations through specialized cells located on their bodies. This ability helps them communicate with each other, locate food sources, and detect potential threats in their environment.
The speed of light is a constant, 299 792 458m/s, usually rounded to 3.0 x 108m/s.
Their are three proportions involving the speed of light that are the underlying
principles that make electromagnetic radiation travel at a fixed speed.
c = ƒ• λ, means that the speed of light, c, is directly proportional to the frequency, f,
and wavelength, λ.
ƒ = λ/ c, means that the frequency, f, of a wave is directly proportional to the
wavelength, λ, and inversely proportional to the speed of light, c.
λ = ƒ/c, means that wavelength is directly proportional to the frequency, f, and
inversely proportional to the speed of light, c.
=========================================
The first line above is correct. That is indeed the speed of light in a vacuum.
And now, to try and answer the question:
The speed of electromagnetic waves is the result of the electrical characteristics of
whatever they're moving through, whether vacuum or something else. The Physicist
who developed the theory of electromagnetic waves ... James Clerk Maxwell ... worked
out all the math in the 1870s, and right there in his math was a number that had to be
the speed of these waves. That was one reason why so many scientists worked so hard
from that time on to measure the speed of light. If it turned out to be the same as the
number in Maxwell's math, then that outcome would strongly support two conjectures:
#1). That light is an electromagnetic wave, and #2). That Maxwell probably knew what
he was talking about, and his whole theory of electromagnetic waves could be depended on.
Ever since then, the more accurately the speed of light is measured, the closer the
measurement comes to Maxwell's prediction for it.
What is length of 2nd pendulum on moon?
The length of a pendulum that has a period of 2 seconds is approximately 0.25 meters on Earth. On the moon, where gravity is about 1/6th of Earth's gravity, the length of a 2-second pendulum would be about 0.73 meters.
How far do you need to be to avoid blindness from an open door microwave?
That would depend on the operating power level of the device, the contents of
the cooking chamber, and the exact angle from the sides of the oven to you.
A microwave oven that's able to run with the door open is hazardous to people
anywhere near it. DO NOT RUN IT. It must be unplugged, and repaired by a
technician who is factory-certified and knows what he's doing, before it's used
again. Take it from an Electrical Engineer with 35 years' microwave experience:
Do NOT call people into the kitchen and say "Hey look what the microwave is doing".
It is nothing to play around with !
What process is energy transferred when sound waves travel through the air?
Energy transfer in sound waves traveling through air occurs through the compression and rarefaction of air molecules. The sound source creates vibrations that cause these molecules to compress and expand, transferring energy as a wave through the air. This transfer of energy is what allows us to hear the sound.
Which electromagnetic waves are used for communication in space?
Radio waves are predominantly used for communication in space due to their long wavelengths that enable them to travel long distances without much interference. These waves are able to penetrate Earth's atmosphere and travel through space to reach distant spacecraft and satellites.
Does infred waves have the same wavelength as visible light waves?
No, infrared waves have longer wavelengths than visible light waves. Infrared waves have wavelengths ranging from about 700 nanometers to 1 millimeter, while visible light waves have wavelengths ranging from about 380 to 750 nanometers.
Most physicists are convinced they do exist. The Laser Interferometer Gravity Wave Observatories (LIGO) were built to detect gravity waves from colliding neutron stars, supernova, and other space-time fabric disturbing events.
What facts happen in the Christchurch earthquake?
The Christchurch earthquake occurred on February 22, 2011, in New Zealand. It had a magnitude of 6.3 and caused widespread damage to buildings and infrastructure in the city. The quake resulted in 185 fatalities and thousands of injuries.
Are rotating stars that emit directional beams of radio waves?
Yes, rotating stars can emit directional beams of radio waves. This phenomenon is known as pulsars, which are rapidly rotating neutron stars that emit beams of electromagnetic radiation, including radio waves, along their magnetic axes. The regular pulsing of these beams as they sweep across our line of sight gives the appearance of a pulsating or blinking star.
What type of star gives out regular pulses of radio waves?
Pulsars. They are very dense neutron stars that rotate quickly and very regularly, emitting radiation pulses towards the earth like a lighthouse.
What is the length of a pendulum with a period of 4.48ses?
The equation for the length, L, of a pendulum of time period, T, is gievn by
L = g(T2/4?2),
where g is the acceleration due to gravity. So, for a pendulum of time period 4.48 sec, the length of the pendulum is 4.99 metres (3 s.f).
What is the different between transverse wave and longitudinal wave?
The vibration of the Longitudinal wave is parallel to the wave direction and the vibration is perpendicular to the direction in the transverse wave.
What is the name of the electromagnetic wave use to send signals in satellites?
The electromagnetic wave used to send signals in satellites is called radio waves. These waves have long wavelengths and are able to travel long distances through space without the need for a physical medium.
Do stars produce electromagnetic waves?
Yes, stars produce electromagnetic waves as a result of nuclear fusion reactions in their cores. The energy released during these reactions causes the stars to emit electromagnetic radiation across various wavelengths, including visible light, ultraviolet light, and X-rays.
Can sound waves be polarized like electromagnetic waves can?
For polarization the direction of the oscillation has to be perpendicular to the direction of travel. In sound waves, which are longitudinal waves, this isn't the case and thereby can not be polarized.
What kind of waves make up sounds waves?
Sound waves are made up of longitudinal waves. This means that the particles of the medium in which the sound is moving vibrate parallel to the direction of the wave.
What is the equation for wavelength and frequency?
The frequency of the wave multiplied by the wavelength equals the speed of light. The speed of light, abbreviated "c", is 186,000 miles per second or 300,000 km per second. This is a constant.
What's more, according to Einstein's theories of relativity, the is invariant (doesn't change) across all frames of reference.
How many Lewis resonance structures are there for the SO3 2 ion?
There are three Lewis resonance structures for the SO3 2- ion. This is because sulfur can form multiple double bonds with the oxygen atoms, resulting in different arrangements of the double bonds and lone pairs.
The wavelength of a wave is calculated using the formula: wavelength = speed of sound / frequency. Substituting the values given: wavelength = 1530 m/s / 7 Hz ≈ 218.57 meters. Therefore, the wavelength of the T Wave is approximately 218.57 meters.
What is it called when a sound wave is stretched out?
A stretched-out area of a wave is called a rarefaction.
What is the frequency of an electromagnetic wave with a wavelength of 1.80cm?
This is a typical math question about a wave.
First you need to know the equation: c=fλ where f is frequency, c is the speed of light and λ (Greek letter lamda) is wavelength. Next, you rearrange the equation so it can solve for what you're looking for--in this case, its frequency f. Algebraically, you can obtain the equation f=c/λ
Now you can plug in the speed of light (2.99x108 meters per second) and the wavelength that is 1,000,000 meters or 1x106 meters. And solve. The answer should be 299 Hertz (or inverse seconds-- s-1)
What wavelength frequencies of sound waves can people hear?
People can typically hear sound waves with frequencies ranging from 20 Hz to 20,000 Hz. Frequencies below this range are infrasound (below 20 Hz), and frequencies above this range are ultrasound (above 20,000 Hz).
