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4 years ago

Which type of wave cannot travel through a vacuum? visible light waves X-ray waves gamma ray waves sound waves

Physics

2 answers:

raketka [301]4 years ago

6 0

The correct answer to the question is- Sound waves i.e the sound waves can not move through vacuum.

EXPLANATION:

Sound wave is a mechanical longitudinal wave which requires a medium for its propagation. The medium may be solid,liquid or gas. It can not travel in space or vacuum.

As per Clark Maxwell's electromagnetic theory, the electromagnetic radiations are the waves which contain time varying electric and magnetic fields which are perpendicular to each other as well as perpendicular to the direction of propagation. Any electromagnetic wave can travel in space with the velocity of light i.e $3\times 10^8\ m/s$ .

As per the question, we have X-ray, gamma ray,visible light and sound wave.

Except sound, all the waves i.e visible light, gamma ray and X-ray are electromagnetic in nature. So, these waves can travel in space.

Hence, the correct answer of this question is sound wave which can not travel in space or vacuum.

Leni [432]4 years ago

5 0

Sound waves cannot travel through a vacuum. sound waves are mechanical. because the are mechanical they can not move through a vacuum due to their propagation they require oscillation of matter.

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What is the acceleration of this object? The object's mass is 60 kg.

Licemer1 [7]

First determine the net force. Let's say the downwards force is negative and the upwards force is positive.
Since the forces act in opposite directions, the net force would be:
400N - 600N = -200N

Since I said negative is downwards, this translates to the net force being 200N downwards.

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3 years ago

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Generate description of the right hand rule for finding the magnetic field around a current carrying wire an tell how it is used

vladimir1956 [14]

Answer:

Right hand thumb rule : It is a rule used to find the magnetic field direction around current carrying wire .

Explanation:

It states that : "If you grasp conductor in your right hand such that thumb points in upward direction ,then the direction in which our finger curls gives the direction of magnetic field or magnetic lines of forces" .

This rule proves that :Current can give rise to magnetism .

Around every current carrying conductor there exist a magnetic field which can be easily felt .

According to this rule : When a current flows in upward direction ,the finger curls in anticlockwise direction and when direction of current reverses ,then the direction of field also reverses .

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3 years ago

Why does your heart not get tired of constantly beating throughout your body

Ipatiy [6.2K]

cardiac muscle is striated. Uniquely, the cells of this kind of muscle are joined strongly together at adherens junctions that “enable the heart to contract forcefully without ripping the fibers apart.”

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3 years ago

Balok diam diatas bidang miring pada sudut kemiringan 40° balok mulai bergerak,tentukan koefisien gesek statis antara balok dan

Pachacha [2.7K]

Answer:

0.84

Explanation:

m = Massa balok

g = Percepatan gravitasi

$\theta$ = Sudut kemiringan

$\mu$ = Koefisien gesekan statik antara balok dan bidang miring

Gaya balok karena beratnya diberikan oleh

$F=mg\sin\theta$

Gaya gesekan diberikan oleh

$f=\mu mg\cos\theta$

Kondisi dimana balok mulai bergerak adalah ketika gaya balok akibat beratnya sama dengan gaya gesek pada balok.

$mg\sin\theta=\mu mg\cos\theta\\\Rightarrow \mu=\dfrac{mg\sin\theta}{mg\cos\theta}\\\Rightarrow \mu=\tan\theta\\\Rightarrow \mu=\tan40^{\circ}\\\Rightarrow \mu=0.84$