Physics, 22.07.2019 02:30 jojojolie6505

Which condition will result in resonance? the frequency of a sound wave is equal to the natural frequency of a material. the frequency of a sound wave is lower than the natural frequency of a material. the frequency of a sound wave is higher than the natural frequency of a material.

Answers: 2

Show answers

Answers

Sound waves traveling through the air or other mediums sometimes affect the objects that they encounter. Recall that sound is caused by the molecules of a medium vibrating. Frequency refers to the number of vibrations that an individual particle makes in a specific period of time, usually a second. The frequency of a wave is different than the speed of a wave. Frequency refers to how often a wave passes through a certain point, while speed refers to how fast a wave passes through the point.

Particles vibrate at a specific frequency for each source, called its natural frequency. Steel, brass, and wood all have different natural frequencies. Occasionally, objects vibrating at their natural frequencies will cause resonance. Resonance is when objects with the same natural frequency as the vibrating source also begin to vibrate. Resonance does not happen very often and only affects object close to the vibrating source. Sometimes, the effects of resonance can be powerful. A singer can make glass vibrate enough to shatter, just by singing a note with the glasss natural frequency!

Answer from: rouchedavisin4

The answer is A The frequency of a sound wave is equal to the natural frequency of a material.

Answer from: Quest

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.

Answer from: Quest

The answer is trial 3.

Another question on Physics

Physics, 22.06.2019 10:30

The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water

Answers: 2

Answer

Physics, 22.06.2019 21:00

Which of the following statements comparing electron microscopy and light microscopy is false? which of the following statements comparing electron microscopy and light microscopy is false? both the electron microscope and the light microscope use the same wavelengths for illumination. images produced by light microscopes can be in color, whereas electron microscope images are black and white unless they are artificially colored. the electron microscope has greater resolution than the light microscope. electron microscopes can allow examination of viruses and internal cell structures, whereas light microscopes are limited to objects that are 0.5 micrometers and larger. request answer

Answers: 2

Answer

Physics, 22.06.2019 21:00

Give me a example of a decomposer. explain what would happen if decomposers were absent from a forest ecosystem

Answers: 1

Answer

Physics, 22.06.2019 21:50

As microwave light travels through a liquid, it moves at a speed of 2.2 x 108 m/s. if the frequency of this light wave is 1.1 x 108 hz, what is the wavelength of this microwave?

Answers: 2

Answer

You know the right answer?

Which condition will result in resonance? the frequency of a sound wave is equal to the natural fre...

Questions