an ambulance is traveling north at 46.1 m/s, approaching a car that is also traveling north at 36.2 m/s. the ambulance driver hears his siren at a freq

Answers

Answer 1

The frequency of the sound heard by the ambulance driver is approximately 1.05 times the frequency of the sound emitted by the siren.

We can use the Doppler effect equation to find the frequency of the sound heard by the ambulance driver.

The Doppler effect describes the change in frequency of a wave (such as sound or light) due to the relative motion of the source and the observer.

The equation for the Doppler effect for sound is:

f' = f (v + vo) / (v + vs)

where f is the frequency of the sound emitted by the siren (in Hz), f' is the frequency of the sound heard by the observer (in Hz), v is the speed of sound in air (approximately 343 m/s at room temperature), vo is the velocity of the observer (in m/s), and vs is the velocity of the source (in m/s).

In this case, the ambulance is the observer and the car is the source. Both are traveling north, so we can take their velocities as positive. Plugging in the given values, we get:

f' = f (v + vo) / (v + vs)

= f (v + 46.1) / (v + 36.2)

= f (343 + 46.1) / (343 + 36.2)

≈ 1.05 f.

For similar question on Doppler effect.

https://brainly.com/question/22068654

#SPJ11

Answer 2

As the ambulance and car are approaching each other. The frequency heard by the driver is approximately 1.05 times the frequency of the siren.

To calculate the frequency of the sound heard by the ambulance driver, we can use the Doppler effect equation. The Doppler effect describes the change in frequency of a wave, such as sound or light, due to the relative motion of the source and the observer.

In this case, the ambulance is the observer, and the car is the source. Both are travelling north, so we can take their velocities as positive. We are given that the ambulance is travelling at a speed of 46.1 m/s, and the car is travelling at a speed of 36.2 m/s.

We also need to know the speed of sound in air, which is approximately 343 m/s at room temperature. With this information, we can use the Doppler effect equation for sound:

f' = f (v + vo) / (v + vs)

where f is the frequency of the sound emitted by the siren, f' is the frequency of the sound heard by the observer (in this case, the ambulance driver), v is the speed of sound in air, vo is the velocity of the observer (in this case, the ambulance), and vs is the velocity of the source (in this case, the car).

Plugging in the given values, we get:

f' = f (v + vo) / (v + vs)

= f (v + 46.1) / (v + 36.2)

= f (343 + 46.1) / (343 + 36.2)

≈ 1.05 f

Therefore, the frequency of the sound heard by the ambulance driver is approximately 1.05 times the frequency of the sound emitted by the siren.

To learn more about the Doppler effect click here: brainly.com/question/28106478

#SPJ11


Related Questions

What mathematical term describes both 5.3 and 8.2 in the expression 5.3 x − 8.2 y + 11.1 ?

Answers

Answer:

coefficient

Step-by-step explanation:

There are 99 males and 121 females participating in a marathon. What percent of the participants are female?​

Answers

To do this, we first want to see how many participants there are in total by adding both males and females.

[tex]99+121=220[/tex]

Now we know that there were 220 total participants, but only 121 were females.

This allows us to set up the fraction 121/220= the percent female.

[tex]\frac{121}{220} =0.55[/tex]

or 55%

y−6=4(x+5) what is the slope

Answers

Answer:

4 is the slope

Step-by-step explanation:

y−6=4(x+5)

This equation is in point slope form

y -y1 = m(x-x1)  where m is the slope and ( x1,y1) is a point on the line

4 is the slope and ( -5,6) is a point on the line

Mrs. Trotta drives 31 miles each day when she goes to work. How many miles does she drive in a 5 day work week?


Im a little lazy and i dont feel good so someone answer this please

Answers

155 because you do 31 times 5. 31 for each day she drives and 5 for many days she drives there so it’s 155

Consider the line 8x+6y= 7.
What is the slope of a line parallel to this line?
What is the slope of a line perpendicular to this line?

Answers

The slope of a line parallel to this line is -4/7
And the slope of a line perpendicular is 3/4

Simplify the following expression 2n+6+4y-8

Answers

2n + 4y -2. The only thing we can do is combine 6 and -8.

One serving of ice cream contains 1,400 calories. If 322 calories come from fat, what percent of the total calories come from fat?

Answers

Answer:

23%

Step-by-step explanation:

322 ÷ 1400 = 0.23 = 23%

23 %

Step-by-step explanation:

x percent of 1400 calories = 322 calories so, (x × 1400)÷100 = 322x = (322 × 100) ÷1400x = 32200 ÷ 1400x = 23

MARK ME AS BRAINLISTPLZ FOLLOW ME

what is the area of a rectangle when the two sides are 4200 and 4500 in meters squared

Answers

Answer                                                                                                                           17400

Step-by-step explanation:

Answer:

A=1.89×10 7 (7 as the exponent)

Explanation:

The equation  is written in point-slope form. What is the equation written in slope-intercept form?    ​

Answers

Answer:y+6 = 1/3 (x, -9)

Step-by-step explanation:The equation y+6 = 1/3 (x, -9) is written in point-slope form. What is the equation written in slope-intercept form? The point-slope form of a line that has a slope of -2 and passes through point (5, -2) is shown below. ... The equation y - 2/3 = -2 (x - 1/4) is written in point-slope form.

The county fair charges $.50 per ride and $10 to get
in. If you have $32, write an equation to find the
number of rides (r) you can go on.

Answers

Answer:

r=44 rides

Step-by-step explanation:

(32-10) ÷ 0.50 = r

r=44

Answer:

44 rides

Step-by-step explanation:

r=32-10/.50

r=44

Which expression is represented by the model below?

2 bars are shown next to each other and each bar is labeled

A.
8
×
2
3
B.
3
×
2
8
C.
8
×
3
2
D.
2
×
3
8

Answers

Answer

its d

Step-by-step explanation:

The expression that is represented by the model below is -

y = 2 x 3/8.

What is expression in mathematics?

An expression in mathematics is a combination of terms both constants and variables.

Given are two labelled bars shown next to each other and each bar.

3 of the 8 bars are colored. Using fraction, we can represent it as -

{f} = 3/8

There are two such bars, so we can write -

y = 2{f}

y = 2 x 3/8

Therefore, the expression that is represented by the model below is -

y = 2 x 3/8.

To solve more questions on algebraic expressions, visit the link below -

https://brainly.com/question/27911936

#SPJ2

Which algebraic expression represents the phrase "fourteen increased by a number"? 14 + y 14y StartFraction 14 over y EndFraction 14 minus y

Answers

the answer is 14 + y

The algebraic expression that represents the phrase "fourteen increased by a number" is 14 + y. which is the correct answer that would be an option (A).

What is the algebraic expression?

Algebraic expressions are mathematical statements with a minimum of two terms containing variables or numbers.

The given statement is "fourteen increased by a number"

According to the given question, translate the phrase into an algebraic expression:

⇒ 14 + y

This is because the phrase "increased by" means to add a certain number to 14.

The variable y represents the number that is being added to 14.

Thus, the algebraic expression that represents the phrase "fourteen increased by a number" is 14 + y.

Hence, the correct answer would be option (A).

Learn more about the algebraic expression here :

brainly.com/question/21751419

#SPJ2

John's high score on the Asteroid Game was 984. Mikes high score was 1,112. Rebecca just played the game and her high score was halfway between John's and Mikes. What was Rebecca's score?

Answers

Hello the answer would be 1048

Add the two numbers up:
984 + 1112 = 2096
And then divide by 2:
2096/2 = 1048

SYMBOL THAT INDICATES THE ROOT OF THE NUMBER

Answers

Answer:

The root symbol (√ ) is used to represent the square root of any number.

Answer:

[tex]\sqrt{x}[/tex]

Square Root

I need with geometry, I need the blank spaces, anything is appreciated!

Answers

Answer:

2: 139

3: 139

4:41

Answer:

Step-by-step explanation:

10) ∠2 + 41 = 180      {Linear pair}

             ∠2 = 180 - 41

            ∠2 = 139

11) ∠3 = ∠2    {Vertically opposite angles}

∠3 = 139

12) ∠4 = 41      {Vertically opposite angles}

Can someone help me out with these?
"write a linear equation for line m,n,l,p"​

Answers

Answer:

Step-by-step explanation:

m:  y = -2x + 4

n:    y = x - 1

l:      y = 4

p:     x = -4

m: y=-2x+4

slope: 2

2/1=2

Its negative because the line is going down from left to right

y-intercept:

it crosses the y axis at (0,4)

n: y=x-1

slope: 1

1/1=1

Its positive because the line is going up from left to right

y-intercept:

it crosses the y axis at (0,-1)

l: y=4

slope: 0

A vertical line's slope is always 0

y-intercept:

it crosses the y axis at (0,4)

p: x=-4

To find the equation for a horizontal line, you need to find what x always is no matter what.

please help solve :D

Answers

Answer:

101

Step-by-step explanation:

4x+11 + 6x -1 = 180 (because they are supplementary)

10x =170

x = 17

angle L = 6(17) - 1 = 101

Angle L and Angle N are congruent. so N = 101

The answer to this is101

Please help me! 20 points!
Enter your answer and show all the steps that you use to solve this problem in the space provided.
Multiply and simplify if possible.

√7x(√x−7√7)

Thank you lovely

Answers

Step-by-step explanation:

[tex] \sqrt{7x {}^{2} } - 7 \sqrt{49x} \\ \sqrt{7} x - 7 \times 7 \sqrt{x} \\ \sqrt{7} x - 49 \sqrt{x} [/tex]

Epress the ratio of cooking oil(80ml) to the milk (250 ml) of the recipe​

Answers

Answer:

8:25

Step-by-step explanation:

Hope this helps!

How would I go about solving this problem?

Answers

I started by finding the area of the walls. The 8x10 walls are 80 and there are 2 so 160. And the other walls are 15x8 so 120 and there are 2 so 240. I added 160 and 240 to get 400. Then you need to subtract the window and the door because you aren’t painting them. You end up getting 340

plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz helpppppppppppppp

Answers

Ok,It’s the first one

Answer:

its the first one.

Step-by-step explanation:

plzz answer fasttttt​

Answers

Answer:

45 square centimeters.

Step-by-step explanation:

Length(L) = 9 cm

breadth (b) = 5 cm

Area of the rectangle

= L * b

= 9 * 5

= 45 cm²

Hope it will help :)

Answer: 45 square centimeters

Step-by-step explanation: 9cm x 5cm = 45cm

30 points

Syed took out a cash advance of d dollars from a financing company. The company deducts a fee of 1/3 of the orig
advanced amount along with a wire transfer fee of $30.00. What is the final advanced amount that Syed receives if she takes out a
cash advance of $300?

(Numerical Answer Only)

Answers

Well what is 30x3 (because that is how you would find what is one third of unknown) then you find the answer witch is 90$

Will give brainlyest (however you spell it)
Directions: Find the missing angles or arcs. Circles may not be drawn to scale.

Answers

Answer:

7. 30°  8. 97.5°  9. 90°  10. 55°  11. 100°  12. x=32° y=64°

What is the slope-intercept equation for the
graph shown below?

A. y = 1/2x - 1
B. y = -1/2x - 1
C. y = -1/2 + 1
D. y = 2x - 1

Answers

It’s A because the slope is 1/2

Can someone help me with this math question plz i will appreciate it. So this is the question: some of the methods you can use to add or subtract are?.

Answers

You could use the distributive property, the distributive property is when you break down numbers, 36-36= (16+16)-(16-16)

Answer:

add: jump strategy, adding up to ten, do the tens last, compensation method, double when the numbers are the same, count from a number upwards

Subtract: take away, minus decrease, leave, how many are left over, difference between, half/halve

Step-by-step explanation:

Which of the following could represent consecutive even integers?

x + 1, x + 2
x + 1, x + 3
2x, 2x + 1

Answers

I’m so sorry I don’t know sorry for the inconvenience

Answer:

only x+1 , x+3 COULD represent consecutive even integers

Step-by-step explanation:

only x+1 , x+3 COULD represent consecutive even integers

un bebe tiene 26.000.000.000 celulas. un adulto tiene cerca de 4.94×10¹³ celulas ¿ cuantas celulas mas tiene un adulto que un recien nacido? escribe la respuesta en notacion cientifica​

Answers

el adulto tiene 13 células más que el bebe

Solve the system of equations using the elimination method.
3x + 4y = -2
2x + 3y = -1

Answers

Answer:

(-2, 1)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

BracketsParenthesisExponentsMultiplicationDivisionAdditionSubtractionLeft to Right  

Equality Properties

Multiplication Property of EqualityDivision Property of EqualityAddition Property of EqualitySubtraction Property of Equality

Algebra I

Terms/CoefficientsCoordinates (x, y)Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

3x + 4y = -2

2x + 3y = -1

Step 2: Rewrite Systems

Find LCM of both equations.

[1st Equation] Multiply everything by 2:                                                        6x + 8y = -4[2nd Equation] Multiply everything by -3:                                                    -6x - 9y = 3

Step 3: Redefine Systems

6x + 8y = -4

-6x - 9y = 3

Step 4: Solve for y

Elimination

Combine 2 equations:                                                                                    -y = -1[Division Property of Equality] Divide -1 on both sides:                               y = 1

Step 5: Solve for x

Define original equation:                                                                               3x + 4y = -2Substitute in y:                                                                                                3x + 4(1) = -2Multiply:                                                                                                           3x + 4 = -2[Subtraction Property of Equality] Subtract 4 on both sides:                       3x = -6[Division Property of Equality] Divide 3 on both sides:                                x = -2

write an expression in simplified form to represent the area of the trapezoid ​

Answers

3xf5 = 52 is the answer to this question have a blessed day
Other Questions
True/False : a pair of identical twins is separated-at-birth one twin is raised as a healthy diet and grows to be quitetall the other twin receives poor diet in proteins and vitamins 23- Samantha, Crystal and Dana are going to visit their manager and advocate for ______, eliminating undervaluation of women's jobs. Group of answer choices Two identical firms that share a market and produce a homogeneous good will find which of the following market outcomes LEAST desirable? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a Bertrand Oligopoly b Cournot Oligopoly Cartel d All are equally preferable. providers of equity funds forego the opportunity to receive periodic payments in order to share in ______. Consider the following problem on a dictionary of n words, W1...Wn, each with exactly k characters. You can transform a word W into word W; if they differ in at most d If the price elasticity of supply is 0.8, and price increased by 5%, quantity supplied woulda. Decrease by 6.25%b. Decrease by 4%c. Increase by 6.25%d. Increase by 4% which set of blood vessels carries blood that is oxygenated, filled with organic nutrients, and low in waste products from the placenta back into the fetus? 24.1.4 Quiz: Electric ForceQuestion 5 of 5What could you do to increase the electric force between two chargedparticles by a factor of 16?A. Reduce one particle's charge by a factor of 4.B. Increase one particle's charge by a factor of 16.C. Increase one particle's charge by a factor of 4.D. Reduce one particle's charge by a factor of 16. T/F: HDD is used to estimate the amount of energy required for residential space heating during a cool season philosophers who argue that the moral rightness of an action is determined solely by its results are called who represents the beginning of what grew into the genre known as folk rock by the end of the 1960s? An investor has researched financial information for Fried Chicken Corporation over the past three years. He has provided you a report with the returns for the company. YEAR RETURN 2016 4. 72% 2017 6. 71% 2018 14. 65% The investor put $860. 00 into Fried Chicken at the beginning of 2016. What is the average return for Fried Chicken Corporation over this time period Summary of propaganda and censorship article Which product from oxidation of fatty acids cannot feed into Kreb's Cycle? A. Acetyl-CoA B. Succinyl-CoA C. Succinate D. NADP+ Complete oxidation of 1 mole of which fatty acid would yield the most ATP? A. 16-carbon saturated fatty acid B. 16-carbon mono-unsaturated fatty acid C. 18-carbon mono-unsaturated fatty acid D. 16-carbon poly-unsaturated fatty acid E. 14-carbon saturated fatty acid the soccer team is transitioning from off-season to preseason training. how should the teams strength training frequency be altered? ________ is the process to ensure data were collected properly and are as free of error and bias as possible. List the eight components of the strategy execution process and one that you consider to be the most important. Explain why it is important? Research real world examples to support position. Must be at least 300 words. 4. Brendan is building a dog house, and the dimensions of the roof are shown below. What is the lateral surface area of the roof? 3. 1 ft 3. 14 2. 7 ft 11 00 5 ft. 3 ft A. 24. 84 ft2 C. 54. 1 ft B. 46 ft2 D. 43. 2 ft? How did the supreme court strengthen the rights of people accused of a crime A solid disk with a mass of 0.50 kg and a radius of 0.15 m is spinning at a rate of 20.0 radians per second. What is the rotational kinetic energy of this disk? a) 1.13J. b) 2.25J. c) 0.75J. d) 1.50J.