A pair of speakers on two sides of a stage are playing identical pure tones. When you stand in the center, equally distant from the two speakers, you hear the sound loud and clear. Why does the intensity of the sound diminish considerable when you step off to one side?

Answers

Answer 1

Answer: Answer is This is because of the interference of sound waves. Due to distractive interference, intensity diminishes when we step to one side.

Answer 2

Answer: bsbjdhdjdududuududhebbevsgshsnsnnsbsbd

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in 1994, Vladimir Kurlivich , from Belarus, set the world record as the world's strongest weight lifter. he did this by lifting and holding above his head a barbell whise mass was 253kg. Kurlovich's mass at the time was 133 kg. caculate the normal force exerted on each of his feet during the time he. was having ldi g the barbell

Answers

The free-body diagram of your question is; 2 downward forces (253 kg mass of barbell & 133 kg body mass of Kurlovich) acting together on a point supported by 2 upward forces as normal forces exerted by Kurlovich's feet.

Solving the normal forces exerted by 2 feet :

Summation of Forces Vertical = 0

2 Dowwnard Forces = 2 Upward Forces (2F)

253 + 133 = 2F

2F = 386 Kgs

F = 386 / 2

F = 193 Kgs (Normal Force Exerted by Each Foot)

Final answer:

To calculate the normal force exerted on each of Vladimir Kurlovich's feet while lifting the barbell, we need to consider the weights of Kurlovich and the barbell. The normal force is equal to the sum of the two weights.

Explanation:

To calculate the normal force exerted on each of Vladimir Kurlovich's feet while lifting the barbell, we need to consider the weight of Kurlovich and the weight of the barbell. The normal force is equal to the sum of Kurlovich's weight and the weight of the barbell, as it balances the gravitational force pulling them downwards. Kurlovich's weight can be calculated using his mass and the acceleration due to gravity, which is approximately 9.8 m/s².

Step 1:

Calculate Kurlovich's weight:
Mass = 133 kg
Acceleration due to gravity = 9.8 m/s²
Weight = Mass × Acceleration due to gravity
Weight = 133 kg × 9.8 m/s²

Step 2:

Calculate the weight of the barbell:
Mass = 253 kg
Acceleration due to gravity = 9.8 m/s²
Weight = Mass × Acceleration due to gravity
Weight = 253 kg × 9.8 m/s²

Step 3:

Calculate the normal force exerted on each foot:
Normal force = Kurlovich's weight + Barbell's weight

Learn more about Calculating normal force here:

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Which salt would be the most soluble in ice water?

Answers

Answer:

the answer to the question is calcium

Final answer:

Calcium chloride is the most soluble salt in ice water due to its ability to lower the freezing point of water more than other salts.

Explanation:

When it comes to solubility in ice water, the most soluble salt would be the one that can lower the freezing point of water the most. Sodium chloride (NaCl) and its analogs calcium chloride (CaCl₂) and magnesium chloride (MgCl₂) are often used to melt ice on roads and sidewalks because they have lower freezing points than pure water. Among these salts, calcium chloride would be the most soluble in ice water. The group 2 metal salts, such as calcium chloride, dissociate to yield three particles per formula unit and provide a larger depression of the freezing point compared to sodium chloride, which dissociates to yield only two particles per formula unit.

Learn more about solubility in ice water here:

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Please select ALL THAT APPLYWhich countries listed below EXCLUSIVELY use the metric system?

United States
France
England
Canada

Answers

Answer:

B, C, D

Explanation:

Considering the United States is the only country that does not used the metric system; France, England, and Canada all use the metric system.

How long does it take for the speed of light and sound to travel around the world

Answers

-- Light travels straight, not around in a circle. But if it did, it would cover
a distance equal to the length of the equator in about 0.13 second.

-- At the speed of sound (in air at standard temperature and pressure),
it would take about 32.6 hours to cover the same distance.

Fireworks change _____ into _____ and _____ energy.

Answers

They first change into chemical, then to radiant, then finally to thermal energy.

oooh! I love fireworks! but heres the answer:
chemical, then thermal, then to radiant.
I hope thats right. :)

A model rocket rises from rest with constant acceleration of 106m/s2.what is the rocket speed at a height of 3.2m

Answers

At a height of 3.2 meters, the final speed of the model rocket is 26.05 m/s.

Given the following data:

Initial speed = 0 m/s (since the model rocket accelerated from rest).

Acceleration = 106 $m/s^2$

Distance (height) = 3.2 meters.

To find the final speed of the model rocket, we would use the third equation of motion;

$V^2 = U^2 + 2aS$

Where:

V is the final speed.

U is the initial speed.

a is the acceleration.

S is the displacement or distance covered.

Substituting the given parameters into the formula, we have;

$V^2 = 0^2 + 2(106)(3.2)\n\nV^2 = 0 + 678.4\n\nV = √(678.4)$

Final velocity, V = 26.05 m/s