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lora16 [44]
4 years ago
12

through which of the following mediums is the velocity of a soundwave the greatest? steel water lead air

Physics
1 answer:
grin007 [14]4 years ago
7 0

Steel is the medium in which the velocity of sound wave is greatest.

Explanation:

The speed at which light in solids are faster when compared to gases and  liquids. This is because the molecules in the solid are tightly packed when compared to the molecules arrangement in gases and liquids. The sound travels 17 times faster in solids than in other states of matter.

Lead is also solid. But the arrangement molecules is more tight and compact in steel than in lead. Thus, in steel the speed at which the sound travels  is 5960m/s whereas the speed of sound in lead is 1960m/s .

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Two long, straight wires are separated by 0.120 m. The wires carry currents of 11 A in opposite directions, as the drawing indic
rewona [7]

Answer:

The magnitude of the magnetic field is 1.83 x 10^{-5} T.

Explanation:

The flow of an electric current in a straight wire induces magnetic field around the wire. When current is flowing through two wires in the same direction, a force of attraction exists between the wires. But if the current flows in opposite directions, the force of repulsion is felt by the wires.

In the given question, the direction of flow of current through the wires is opposite, thus both wires applies the same field on each other. The result to repulsion between them.

The magnetic field (B) between the given wires can be determined by:

B = \frac{U_{o}I }{2\pi r}

where: I is the current, r is the distance between the wires and U_{0} is the magnetic field constant.

But, I = 11 A, r = 0.12 m and U_{0} = 4\pi x 10^{-7} Tm/A

So that;

B = \frac{4\pi *10^{-7}*11 }{2\pi *0.12}

   = 1.8333 x 10^{-5}

B = 1.83 x 10^{-5} T

6 0
3 years ago
Explain how the graphic organizer helped you formulate your decision and participate in the discussion.
nekit [7.7K]

Answer:

The graphic organizers help to keep track of the details. They are a visual representation of knowledge that rescue the important aspects of a concept using labels within a scheme. They also present information in a concise manner, highlighting the organization and the relationship of the concepts. Graphic organizers help students organize their thinking process and their writing.

Explanation:

6 0
3 years ago
An exothermic reaction is taking place in a test tube what would you expect to feel when you touch the outside of the test tube
ValentinkaMS [17]

Answer:

Heat, Let me explain,

Explanation:

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7 0
4 years ago
Frequency of the wave below?
agasfer [191]

It's hard to tell exactly what's happening in that 110 cm that you marked over the wave. What is under the ends of the long arrow ? How many complete waves ? I counted 4.5 complete waves ... maybe ?

If there are 4.5 complete waves in 110cm, then the length of 1 wave is (110/4.5)=24.44cm.

Frequency = speed/wavelength

Frequency = 2m/s /0.2444m

Frequency = 8.18 Hz

6 0
3 years ago
_____ helped to socially and politically unify the early byzantine empire by tolerating and even promoting christianity.
Ber [7]

Constantine I helped to socially and politically unify the early byzantine empire by tolerating and even promoting christianity.

8 0
4 years ago
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