PHYSICS HIGH SCHOOL

If you were trying to build a soundproof room, which of the following materials would you choose in order to absorb the most sound, based on the coefficient of absorption for each material?        A. Heavy curtains   B. Wood   C. Concrete   D. Carpet

Answers

Answer 1
Answer:

The material that would absorb the most sound is Heavy curtains (Option A)

What material absorbs the most sound?

The effectiveness of a material in absorbing sound is typically measured by its coefficient of absorption.

The coefficient of absorption ranges from;

  • 0  (perfectly reflective, no sound absorption) to
  • 1  (perfectly absorptive, all sound is absorbed)

Based on the coefficient of absorption for each material listed, the best choice for sound absorption would be Heavy curtains.

Heavy curtains are often designed with sound-absorbing properties, and they can have a coefficient of absorption higher than other materials like wood, concrete, or carpet.

The ranking of the absorption of the materials are;

Heavy curtains (0.5)  >  Carpet (0.2) > Wood (0.05) > Concrete (0.02)

Learn more about sound absorption here: brainly.com/question/16297116

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Answer 2
Answer:

Coefficients of Absorption for Common Materials

(from Penn Foster) ⭐⭐⭐⭐⭐

Material                                            Coefficient of Absorption

Perforated acoustic ceiling material                              60%

Heavy curtains  (A)                                                            50%

Carpeting  (D)                                                                     20%

Wood  (B)                                                                              5%

Plaster                                                                                  3%

Clay tile                                                                                 3%

Concrete (C)                                                                         2%

The answer is A. Heavy curtains ✅

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Answers

Answer:

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Explanation:

Can someone plz tell me how to solve this step by step

Answers

Answer:

Explanation:

T=2π√l/g

to solve this for l we have to remove the square root in order to finish square root we have to take square on both side so the equation become

T²=4π²l/g

multiplying g on both side

T²g=4π²l

now dividing 4π² on both side

T²g/4π²=l

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Answers

The statement 'The more particles a substance has at a given temperature, the more thermal energy it has' is true. The kinetic molecular theory of gases has three main laws and one of them is the average kinetic energy of the particles in a gas. The average kinetic energy of the gas particles is the behavior and movement it does in the surroundings. It is directly proportional to temperature wherein if you increase the temperature, the kinetic energy of a particle also increases. It will also decrease its movement or its kinetic energy if the temperature lowers. 

Nếu tăng khoảng cách giữa hai điểm lên 4 lần thì lực tương tác tĩnh điện giữa chúng sẽ

Answers

Answer:

điện giữa chúng s

Explanation:

What happens to light when it enters a lens? A. It speeds up.

B. It is reflected.

C. It is refracted.

D. It becomes brighter.

Answers

Good Morning! When the light passes through a lens - whether of increase or withdrawal - it tends to be refracted, that is, to suffer a deviation in its trajectory. Depending on the type of lens, it may be that some of the light is reflected too, but this is not the common parameter. Correct letter is therefore c). Hugs!Hope this helps. Let me know if you need additional help!

Answer: i think the answer is c hope this helps

a car accelerates for 5 seconds at 2.1 m/s squared if the car intentionally has a speed of 10 m/s what is its new speed

Answers

Answer:

final velocity will be

v_f = 20.5 m/s

Explanation:

As we know that initial speed of the car will be

v_i = 10 m/s

acceleration of the car is

a = 2.1 m/s^2

time taken is

t = 5 s

now we know that

v_f = v_i + at

v_f = 10 + (2.1* 5)

v_f = 10 + 10.5 = 20.5 m/s
Hey - for this problem you will find out your new velocity (similar to speed)

You take your Initial Velocity and add to it all the gained velocity you get during this process (which is the Acceleration multiplied by the amount of Time you are accelerating for)

So we get (Final Velocity) = (Initial Velocity) + (Time)(Acceleration)

In your equations, thats (Final Velocity) = (10 meters/second) + (5 seconds)(2.1 meters/second/second)

Which is 10 + 10.2 = 20.2 meters/second
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