When a person speaks, a sound intensity is generated that is 600 times greater than when the person whispers. What is the difference in decibels between the sound level when the person speaks compared to when she whispers

Answers

Answer 1

Answer:

Originally :  Level = log I / I0

Currently: Level = 10 log I / I0

Level = 10 log 600 = 10 * 2.78 = 27.8

Note the term 1 bel = 10 decibels


Related Questions

Hey guys <3
I need some help with this performance task,, physics isn’t my strongest subject so help is much appreciated :)

(8/9 parts)

Answers

Answer:

8/9 parts

Explanation:

mark me as brainliest

In the absence of friction, explain why the horizontal component of a projectile’s velocity is a constant.

Answers

Answer:

This downward force and acceleration results in a downward displacement from the position that the object would be if there were no gravity. The force of gravity does not affect the horizontal component of motion; a projectile maintains a constant horizontal velocity since there are no horizontal forces acting upon it

A measurement has high
when it is very close to the
true value?

Answers

Answer:

Accuracy

Explanation:

Accuracy means making measurements that are close to the value precision means making measurement that are close in value to eachother but not necessarily close to the true value.

I hope this helps! If not sorry.

In a salt solution, salt is a solute. why​

Answers

Answer: Because it can dissolve in water

Explanation: Logic

A subatomic particle that has a positive charge and that is located in the nucleus of an atom

Proton
Neutron
Electron
Nucleus

Answers

Answer:

c

Explanation:

Answer:

protons have a positive charge

Explanation:

neutrons have no charge

electrons have negative charge

If the activity of a source is 70 Bq after 2 years, and 35 Bq after 15 years. How long will be until the activity is 8.75 Bq?​

Answers

Answer:

N = N0 e^-kt          calling k the decay constant

70 = N0 e^-2 kt

35 = N0 e^-15 k

2 = e^(-2 + 15) k

.693 = 13 k

k = .0533

N0 = N e^kt

N0 = 70 e^(.0533 * 2) = 77.87

8.75 = 77.87 e^-(.0533 t)

ln .1124 = -.0533 t

t = -ln .1124 / .0533 = 41 yr

what is a concentration?​

Answers

Answer/Explanation:

In chemistry, concentration is the abundance of a constituent divided by the total volume of a mixture. Several types of mathematical description can be distinguished: mass concentration, molar concentration, number concentration, and volume concentration.

A concentration refers to a subject or study within a specific major. As part of the degree coursework, concentration classes count toward your major requirements as well.

Physics - Vectors-- Could you help me please?

Answers

Answer:

please share the question

Explanation:

A) half as much
B) as much
C) two times as much
D) three times as much

Answers

Answer:

3 times as much

Explanation:

half as much would be 12%, as much would be 24%, and two times as much would be 48%.

3 times as much is 72, which is about 74%

I NEED THIS ANSWERED ASAP NO LINKS !!!
I need a answer that is 100% ACCURATE

Answers

Answer:

1. Not a noun phrase

2. Noun phrase

3. Noun prase

4. Not a noun phrase

Explanation:

hello, may you please help me

Calculate the percentage of water of crystallisation in Na2CO3•10H2O

Answers

Answer:

62.9%. The molar mass of sodium carbonate is 106 grams per mole. Each water molecule adds another 18.0 grams per mole.

Which statement is true about vectors?

Answers

Vectors need direction and magnitude to exist, otherwise, it becomes scalars that do not require direction to be expressed.

eg - Velocity is a vector as it needs direction, but speed is scalar and does not need direction

hope this helps

Answer:

a. All quantities in physics are not vectors. b. A vector may have either magnitude or direction. c. The vector's length should be proportional to its magnitude. d. Two vectors can be added only if they have the same direction.

a car is running with the velocity of 72km/h. what will be its velocity after 5s if its acceleration is -2m/s2 ?​

Answers

Answer:

36 km / hr

Explanation:

velocity final = velocity initial + accel * time

                             20 m/s     + (-2)*5                ( 20 m/s = 72 km/hr)

                                10 m/s     ( or 36 km/hr)

Explain this phase diagram by relating what you know about temperature, states of matter and
pressure.

Answers

Answer:

See explanation

Explanation:

The vertical axis corresponds to the pressure of a substance, while the horizontal axis corresponds to the temperature. The solid is the substance which contains particles of strong intermolecular force and compaction, typically ionic at a certain temperature, the liquid is the substance which contains relatively compact molecules, however lacks a particular arrangement. The gaseous substance is caused by particles with weak intermolecular forces, causing particle movement and collision with no arrangement whatsoever. The triple point as shown in the diagram, is the phrase on a diagram where each substance: solid, liquid and gas coexist. The critical point is the phase at which the/a substance is indistinguishable between liquid and gaseous states. A substance or elements state is highly dependent on its environment and it’s temperature, of which ultimately affects its kinetic energy within its particles. This is what the graph portrays and represents.

Hopefully I have aided you, and I apologize for the relatively late response.

What is the speed of an object that travels 60 metres in 4 seconds​

Answers

Answer:

[tex]s = \frac{d}{t} = \frac{60}{4} \\ \boxed{speed = 15m. {sec}^{ - 1} }[/tex]

Answer:

15 meters per second

Explanation:

what is the mass on mercury of an object that weighs 784 n on the earth’s surface?

Answers

Answer:

80 kg weighs 80 kg x 9.8 m/s2 = 784 kg m/s2, or 784 Newtons. The surface gravity of Mercury is 0.39 that of Earth's (table 10-1), so 80 kg weighs 784 N x 0.39 = 306 N.

Explanation:

I hope that helps you

car starts from rest and reaches a velocity of 10 m/s in 10s a) Draw the v against t graph for the motion of the car? b) From the graph find: i) the slope of the graph. II) Area of the v against t graph bounded by the slope, on x-axis. c) What are the slope and area of v against t graph equal to respectively?​

Answers

Explanation:

여기 당신의 대답이 있습니다. 즐겨 . 팔로우하고 브레인리스트로 표시해주세요

Answer:

The above answer is correct too, keep busy

9. The repair order is a legal document because

People say it’s either B or C, I’m not sure.

Give me the correct answer and you’ll get brainliest!!!

Answers

Answer:

A

Explanation:

for ot to be legal the shop owner should sing it

Answer:

The answer is b it's signed by the customer

When you sign it, you have agreed to the deal and will carry out what the deal says. It's a mark of proof that you have agreed to follow it.

What is a name of a isotope of carbon

Answers

Answer: Carbon 12 :)

Answer:

I've heard of many different names of isotopes of carbon, and they're Carbon-14, Deuterium, Hydrogen-1, Oxygen-18, boron-11, Nitrogen-14, and Neon-20.

Question 5 of 10 Which two factors affect the amount of thermal energy an object has? A. The amount of space between its particles B. The mass of the object C. The amount of motion its particles have D. The directions in which its particles are moving​

Answers

Answer: A: The Mass of Object AND D. The amount of motion it’s particles have

hi can someone please answer the number 2 question i really need it thank you ❤️​

Answers

#Batangas

[tex]\\ \tt\longmapsto d=\dfrac{49.07}{8}\times 100[/tex]

[tex]\\ \tt\longmapsto d=6.13(100)[/tex]

[tex]\\ \tt\longmapsto d=613km[/tex]

#Puerto Princesa

[tex]\\ \tt\longmapsto d=\dfrac{58.10}{8}\times 100[/tex]

[tex]\\ \tt\longmapsto d=7.26(100)[/tex]

[tex]\\ \tt\longmapsto d=726km[/tex]

#Davao

[tex]\\ \tt\longmapsto d=\dfrac{39.47}{8}\times 100[/tex]

[tex]\\ \tt\longmapsto d=4.93(100)=493km[/tex]

How is temperature related to the physical change of a substance

Answers

Answer:

Temperature is a measure of the kinetic energy of particles in a substance. As temperature increases, the atoms or molecules in a substance gain energy. As temperature decreases, the particles lose energy. A change in the energy of particles causes a change in their arrangement. A change in the arrangement of particles can lead to a physical change.

Explanation:

Brainliest pls

briefly explain distribution of charges on conductors ​

Answers

Answer:

The distribution of charge is the result of electron movement. Since conductors allow for electrons to be transported from particle to particle, a charged object will always distribute its charge until the overall repulsive forces between excess electrons is minimized.

Answer:

This is simply the movement and transportation of electrons

which type of energy is stored in chemical compounds and released in chemical reactions?

Answers

Answer:

potential

Explanation:

NEED ANSWER FAST

A person pushes a 11.5KG lawn mower with an applied force of 70.0N along the 45.0-degree-handle. if the lawn mower moves at a constant velocity
Determine the net force on the mower:

Fnet=__N
Determine the horizontal component of applied force on the mower:
Fx=__N (round to 3 digits)
Determine the horizontal frictional force acting on the mower
Ff=__N (Round to 3 digits)
Calculate the applied force the person must exert on the mower for it to accelerate at a rate of 1.00m/s^2
F=__N (round to 3 digits)​

Answers

Force is a vector quantity hence it can be resolved into a vertical and a horizontal components.

1) The horizontal component of the applied force is given by;

Fnet = F cos θ

Fnet = 70.0N × cos (45.0)

Fnet = 49.5 N

2) The horizontal component of the frictional force is;

F = -Ff + mgsinθ

F = applied force

Ff =mgsinθ - F

Ff = (11 × 10 × sin 45) - 49.5

Ff = 28.3 N

Horizontal component of Ff

28.3 N cos 45 = 19.9 N

3) The applied force is given by;

F = 11 Kg ×  1.00m/s^2 = 11.0 N

Learn more: https://brainly.com/question/1527403

Evan drives a golf ball with an initial velocity of 49 meters per second at an angle of 16 degrees own a flat driving range. How far will the golf ball land?

Answers

Answer:

solusion Explanation:the answer in 984

tha

what can be done not to let anyone of the country be hungry and clothless discuss in groups and present your findings in the class​

Answers

...get food to people in need when they need it...

Dùng công thức gia tốc trọng trường g =GM/R^2 . Tìm gia tốc trọng trường gH trên sao Hỏabiết khối lượng sao Hỏa bằng 0,5325 bán kính Trái Đất, theo đơn vị m/s^2 . Biết gia tốc trọng trường Trái Đất gTĐ =9,8 m/s^2 .
A. 1,204
B. 0,305
C. 3,712
D. 6,218

Answers

The answer is C: 3,712

Calculating Height
A ski lift is used to transport people from the base of a hill to the top. If the lift leaves the

base at a velocity of 15.5 m/s and arrives at the top with a final velocity of 0 m/s, what is the height of the hill? Round the answer to the nearest tenth.

Answers

Final velocity=v=0m/sInitial velocity=u=15.5m/sAcceleration due to gravity=g=10m/s^2Height=h

[tex]\boxed{\sf v^2-u^2=2gh}[/tex]

[tex]\\ \sf\longmapsto h=\dfrac{v^2-u^2}{2g}[/tex]

[tex]\\ \sf\longmapsto h=\dfrac{0^2-15.5^2}{2(10)}[/tex]

[tex]\\ \sf\longmapsto h=\dfrac{240.25}{20}[/tex]

[tex]\\ \sf\longmapsto h=12.012m[/tex]

Habiba and selehadin have measured the voltage across a resistor to be 5.26V and the current flowing through in to be 0.41A they work out the resistance .

habiba says the resistance is 12.8 ohms .selehadin disagrees and says that is 13 ohm .

who is correct?.​

Answers

Considering the definitipn of current, voltage, power, and Ohm's law,

Current

The flow of electricity through an object, such as a wire, is known as current (I). Its unit of measurement is amps (A). So current is a measure of the speed at which the load passes through a given reference point in a specified direction.

Voltage

The conductive force (electrical pressure) behind the flow of a current is known as voltage and is measured in volts (V) (voltage can also be referred to as the potential difference or electromotive force). That is, voltage is a measure of the work required to move a charge from one point to another.

Resistance

Resistance (R) refers to the resistance or opposition that an element has to the passage of electric current. It is represented by the symbol Ω and indicates the resistance that an element offers to the passage of electricity.

This means that the greater the resistance to the passage of current, the lower the intensity or amount of electricity that passes through this conductor.

The resistance that is measured in ohms.

Ohm's law

Ohm's law indicates that the current through a circuit is directly proportional to its voltage or voltage and inversely proportional to the resistance it presents.

Mathematically, Watt's law is expressed:

[tex]I=\frac{V}{R}[/tex]

So if you want to find resistance, the expression for its calculation is:

[tex]R=\frac{V}{I}[/tex]

This case

In this case, you know:

V= 5.26 VI= 0.41 A

Replacing:

[tex]R=\frac{5.26 V}{0.41 A}[/tex]

Solving:

R= 12.8 ohms

Habiba is right. The resistance is 12.8 ohms.

Learn more:

https://brainly.com/question/23205779?referrer=searchResultshttps://brainly.com/question/13485930?referrer=searchResultshttps://brainly.com/question/9813227?referrer=searchResults
Other Questions
why did germans come to america during industrial revolution A requirement for an insurers approval to pay for certain prescription drugs is a prior authorization. an incentive. a formulary. a reimbursement. Create a hypothesis: Ben wonders if sugar water will help his vine plant grow taller than it would with regular water. He would like to do an experiment. Create an appropriate hypothesis Ben can test using an experiment. *your hypothesis can be anything as long as it is in the correct format and related to the experiment! Do you think the Embargo Act was a smart idea? Why or why not? Pick the correct type of sentence.Some of the students homeschooling last yeara) sentenceb) fragment c) run-on How many grams of Hydrogen (H) would need to react with 143 grams of Oxygen (O) to make 235 grams of Water (H20)? 235 Water, made of 1 oxygen atom bonded with 2 hydrogen atoms, is what What element is in period 4 and is in group 18 can someone please help me with this What is probable cause and how does it affect what police officers can and cannot do? Two eighth-grade classes are selling popcorn to raise money for an end-of-year field trip. One class is selling popcorn for $4.50 a bag and has already raised $270.00. The other class is selling popcorn for $5.00 a bag and has already raised $250.00 Write an equation that can be used to calculate p, the number of additional bags of popcorn each class needs to sell, so that the total amount raised is the same for both classes. What questions do you have about the origin, history, or symbolism of the rainbow flag? Where might you find answers to your questions? When Beorn was missing, heQuestion 3 options:went back to check on the travelers' storywas scouting the area for goblinshad gone to get honey for his guests Porsha calculates the amount of money she will have at the end of 6 years on a $5,000 investment earning 3.75% interest compounded quarterly. She writes the following expression:5,000 (1 + 0.0375) superscript 24Which of the following statements about Porsha's expression is true?a.Porsha's expression is correct.b.Porsha's expression should have 1 + 0.009375 in the parentheses.c.Porsha's expression should have an exponent of 6, not 24.d.Porsha's expression should have both 1 + 0.009375 in the parentheses and an exponent of 6. Section 3 of the 14th Amendment reads that "no person shall be a senator or Representative in Congress or elector of president or Vice President .... shall have engaged in insurrection or rebellion ... or given aid or comfort to the enemies thereof" According to this information, who was not allowed to become a member of U.S. government after the civil war?Former confederate generals Former federal government employeesFormer union soldiers Former slaves 1. Gabungkan ayat-ayat tunggal di bawah supaya menjadi satu ayat majmuk.i. Puan Hamidah sering sakit.Puan Hamidah rindu akan anak bongsunya yang sudah lama tidak balik menjenguknya. ________________________________________________________________________ii. Kak Esah menghidangkan kek.Kak Esah menjemput kami makan. ________________________________________________________________________ 4 x 4 x 4 x 5 x 5With index notation? 43% of a town has blue eyes, 46% has blonde hair, and 24% has both. What is the probability that a random person picked will have both? What is an involuntary and a voluntary muscle action? trade associations provide all of the following exept