Do compressional waves need a medium? If so which one would be the fastest ans slowest medium.

Answers

Answer 1

Answer: Yes, compression waves need a medium. without a medium there is nothing to compress, hence, no wave. A fast medium like a gas (air) is easy to compress and allows waves to move through it easily. a slow medium, like a liquid, is still pretty fast, but not as fast as air.

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What happens to the room temperature in ehich an air conditioner is lefy running on a table in the midle of the room

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An air conditioner takes heat out of the air that runs through it. It has to put that heat somewhere. If it can't blow the heat out of the room then the heat stays in the room. But that's not all. While it's running the air conditioner also uses electrical energy to run. And that generates more heat. So if there's an air conditioner running in a closed room then the room will get warmer.

it will get cold only in that room. if you also have it in a room and close the door it will also get colder. sorry if this didnt help.

A coin is placed 32 cm from the center of a horizontal turntable, initially at rest. The turntable then begins to rotate. When the speed of the coin is 110 cm/s (rotating at a constant rate), the coin just begins to slip. The acceleration of gravity is 980 cm/s^2 . What is the coefficient of static friction between the coin and the turntable?

Answers

Answer:

0.39

Explanation:

distance from the center (r) = 32 cm = 0.32 m

speed of the coin (v) = 110 cm/s = 1.1 m/s

acceleration due to gravity (g) = 980 m/s^{2} = 9.8 m/s^{2}

find the coefficient of static friction (k) between the coin and the turn table

frictional force = kmg

before the table begins to move, the frictional force balances the centripetal force ( $(mv^(2) )/(r)$ )

therefore

frictional force = centripetal force

kmg = $(mv^(2) )/(r)$

kg = $(v^(2) )/(r)$

k = $(v^(2) )/(r)$ ÷ g

k = $(1.1^(2) )/(0.32)$ ÷ 9.8 = 0.39

Viscous lidocaine 2% 30 mL Maalox (do not substitute Kaopectate) 60mL Diphenhydramine (use on hand stock 12.5mg/5mL elixir) 75 mg Carafate 1gm/10mL 40 mL The doctor wants the patient to use a daily dose of 2 teaspoons. How many doses are in the final product?

Answers

Answer:

There are approximately 16 dozes in the final product

Explanation:

The given parameters are;

The viscous lidocaine 2% 30 mL + Maalox 60mL + Diphenhydramine (12.5 mg/5mL elixir)75 mg + Carafate 1gm/10mL 40mL

The total volume becomes;

30 mL + 60 mL + 5 × 75/12.5 mL + 40 mL = 160 mL

1 Teaspoon = 4.928922 mL

Therefore, 2 teaspoon = 2 × 4.928922 mL = 9.857843 mL

Which gives;

The number of doses in 160 mL = 160 mL/(9.857843 mL) = 16.2307312 doses

Which is approximately 16 doses

Therefore, there are approximately 16 dozes in the final product.

The final product contains viscous lidocaine, Maalox, diphenhydramine, and Carafate. There are approximately 10.5 doses in the final product.

The final product is a mixture of viscous lidocaine, Maalox, diphenhydramine, and Carafate. The doctor wants the patient to use a daily dose of 2 teaspoons.

To calculate the number of doses in the final product, we need to determine the total volume of the mixture and divide it by the volume of a single dose.

First, add the volumes of the individual components: 30 mL + 60 mL + 75 mg + 40 mL = 105 mL

Since the doctor wants the patient to use 2 teaspoons (10 mL) per dose, divide the total volume of the mixture (105 mL) by the volume of a single dose (10 mL): 105 mL ÷ 10 mL = 10.5 doses

Therefore, there are approximately 10.5 doses in the final product.

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A deep draught vessel sailing in a very narrow channel can develop a sudden sheer as it slows down. What could be the cause of this?

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Final answer:

A deep draught vessel sailing in a narrow channel can experience a sudden sheer due to squat, which is the downward displacement caused by hydrodynamic forces in shallow water. This can lead to the ship sinking lower in water and potentially losing control. Ship operators should be aware of this phenomenon and take precautions when navigating in narrow channels.

Explanation:

A deep draught vessel sailing in a very narrow channel can develop a sudden sheer as it slows down due to the phenomenon called squat. Squat refers to the downward displacement of a ship caused by hydrodynamic forces when it is sailing in shallow water. As the vessel slows down, the decrease in speed leads to a decrease in the hydrodynamic forces supporting the ship, causing it to sink lower in the water and potentially lose control.

This sudden sheer can be dangerous as it can result in the ship deviating from its intended course and potentially colliding with the channel walls or disturbing other vessels in the vicinity.

It is important for ship operators to be aware of this phenomenon and take necessary precautions when navigating in narrow channels, such as maintaining a safe speed and keeping a proper distance from the channel walls.

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Final answer:

A deep draught vessel sailing in a very narrow channel can develop a sudden sheer as it slows down due to the change in pressure caused by the narrowing of the channel.

Explanation:

A deep draught vessel sailing in a very narrow channel can develop a sudden sheer as it slows down due to the change in pressure caused by the narrowing of the channel. When the channel narrows, there is a pressure difference which results in a net force on the fluid. This net force causes the vessel to experience a sudden sheer as it slows down.

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Which of the following is not a property of water? A) Low density B) Low specific heat C) Low heat of vaporisation D) All of the above

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Answer:

the correct answer is (b) low specific heat

The portion of a light ray that falls on a surface is a/an A. reflected ray.
B. diffuse reflection.
C. specular reflection.
D. incident ray.

Answers

So we want to know what is a light ray that falls on a surface. The incident ray that fallls on a surface can then fe reflected, refracted or transmitted. The angle in which the incident ray is must be the same as the angle of a refracted light ray. So the correct answer is D.

d. incident ray, i just took the test yesterday

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