1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
liraira [26]
2 years ago
12

As an ambulance siren passes and moves away from you, the sound waves'

Physics
1 answer:
Tju [1.3M]2 years ago
7 0

\qquad\qquad\huge\underline{{\sf Answer}}♨

Amplitude and frequency are two properties of sound waves that decreases as distance from source decrease.

Therefore, as the ambulance moves away,

  • frequency - decreases
  • amplitude - decreases

So, correct choice is D

You might be interested in
A total resistance of 3.03 Ω is to be produced by connecting an unknown resistance to a 12.18 Ω resistance. (a) What must be the
insens350 [35]

Answer:

(a) 4.0334Ω

(b)parallel

Explanation:

for resistors connected in parallel;

\frac{1}{R_{eq} } =\frac{1}{R1}+\frac{1}{R2}

Req =3.03Ω , R1 =12.18Ω

\frac{1}{3.03 } =\frac{1}{12.18}+\frac{1}{R2}

\frac{1}{R2}=\frac{1}{3.03 }-\frac{1}{12.18}

\frac{1}{R2}=0.2479

R2=1/0.2479

R2=4.0334Ω

(b)parallel connection is suitable for the desired total resistance. series connection can not be used to achieve a lower resistance as the equation for series connection is.

Req = R1+R2

3 0
3 years ago
Ca anyone help me with writing a lab report about the reaction between the pepper and the soap in water
7nadin3 [17]

Answer:

Buoyancy force and surface tension are the reactions that take places between soap and pepper experiment.

Explanation:

Surface tension:

The surface tension of a liquid is the tendency of liquid surfaces to resist an external force due to the cohesive nature of its molecules.

The pepper and soap experiment helps you to understand buoyancy force and surface tension.

Reaction between the pepper and soap is as following.

  • The pepper flakes float because of buoyancy force. It makes the pepper flakes to move away to the edge of the plate.
  • This happens because the liquid dish soap changes the surface tension of water.
  • And The pepper flakes are so light, it floats on the water surface due to surface tension.
  • when we add soap, it breaks the surface tension of water, but the water resists it. So they pull away from the soap along with the pepper flakes.
  • This pushes the pepper away from your soap covered finger.

This is the reaction that take places between soap and pepper experiment.

Learn more about Pepper and soap experiment here:

<u>brainly.com/question/9614070</u>

<u>#SPJ4</u>

6 0
2 years ago
The humber bridge in england has the world's longest single span, 1410 m . calculate the change in length of the steel deck of t
Pepsi [2]
Applicable linear expansion equation:
ΔL = αΔTL
In which
ΔL = change in length, α = Linear expansion coefficient of steel, ΔT = change in temperature, L = original length

Therefore,
ΔL = 12*10^-6*(18.5-(-3))*1410 = 0.36378 m
3 0
3 years ago
If sensed fuel in the Piper Archer reaches ____ gallons in either tank, the yellow Low Fuel caution light will illuminate on the
lana66690 [7]

Answer:

10 litres.

Explanation:

The air fuel ratio for aircraft is 12:1. It is due to simplicity piper archer is equipped with continuous flow injection system. There is a fuel sensing is Piper Archer which informs the pilot about the low fuel when the fuel level reaches to as low as 10 litres only in the tank. The yellow low furl light will illuminate to alert the pilot.

3 0
3 years ago
How does a real image differ from a virtual image?
Snezhnost [94]

Answer:

one contains datta that can take up hard drive or disc space weras a picture takes up space on walls or photo albums

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • Why are there so few eclipses in 2014?
    9·2 answers
  • How many electrons are there in 3.5 x 10" C?
    7·1 answer
  • The shape of a sign gives you a clue about the information contained on the sign.
    13·1 answer
  • Planet Nine is speculated to be on average 20 times farther away from the Sun than Neptune (on average distance from the Sun). H
    14·1 answer
  • A resistor resists the flow of electricity and usually converts electrical energy to heat energy. True or False?
    5·2 answers
  • A wave transfers:<br> Water<br> particles<br> energy<br> matter
    12·1 answer
  • A temperature of 50F is equal to c
    15·1 answer
  • Protons and neutrons both have positive charge, and electrons have negative charge. true or false
    12·2 answers
  • hen approaching a curve, it is best to: A. Search for possible collision traps and escape paths B. Stay close to the centerline
    12·1 answer
  • A rectangular block measures 8cm by 5cm by 4cm, a mass of 1.25kg what is the volume of the block
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!