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
Katyanochek1 [597]
3 years ago
5

The students observe that the pitches of the sounds from the fire truck and the

Physics
1 answer:
Blababa [14]3 years ago
5 0

So, option 3 or the ambulance sound waves have more waves and shorter wavelength is the correct reason for ambulance siren having higher pitch compared to fire truck siren

Explanation:

Pitch of any sound wave is determined as the clarity in frequency of notes or the number of times a cycle is repeated for a single second. So pitch is similar to frequency. And frequency is the measure of number of complete cycles in a second. So if the ambulance siren has higher pitch compared to siren of fire truck. Then this means the frequency of ambulance siren is greater than the fire truck siren. As the frequency is more, then from the given options, choice 3 is correct. The ambulance siren have more waves and shorter wavelength. As more the frequency or number of waves, lesser or shorter is the wavelength of sound wave from ambulance.

You might be interested in
How long does it take for an airplane to change its velocity from 140 m/s to 180 m/s if its
kobusy [5.1K]

Answer:

Explanation:

a = 4ms⁻²,  Vf = 180 m/s  &  Vi = 140m/s

a = \frac{Vf-Vi}{t}

4 = \frac{180-140}{t}

t = 40/4

t = 10sec

To Measure Distance Use third Equation of Motion:

2aS = Vf²-Vi²

S = \frac{180*180 - 140*140}{2(4)}

S = 12800/8 = 1600m

4 0
3 years ago
Y'all I need this comon please give me a right answer
Natali [406]
It will be a virtual image that appears on the left side of the mirror

i hope this helps!
5 0
3 years ago
Will the sun ever stop shining? If so, how and when would we know((there are 3 questions
Alinara [238K]

Answer:

Explanation:stop it cause the sun don't shine that long unless if it's summer cause the summer time is very hot it may be 100 degrees or lower

6 0
3 years ago
Answer True or False to each case. Coulomb's law states that the force between static charges Q1 and Q2 is K Q1Q2/r2 where K is
Julli [10]

Explanation:

The Coulomb's law states that the force acting on two charges is directly proportional to the product of charges and inversely proportional to the square of distance between them . Mathematically, it is given by

F=k\dfrac{q_1q_2}{r^2}

Where

k is the electrostatic constant

q₁ and q₂ are charges

r is the distance between them.

The SI unit of electric force is Newton. It can be attractive or repulsive. The attraction or repulsion depend on charges. If both charges are positive, the force is repulsive and if both are opposite charges, the force is attractive.

4 0
3 years ago
compare the effects of HCl on protein digestion by pepsin and on starch digestion by salivary amylase. Explain the physiological
Murljashka [212]

Answer:

HCI creates an acidic environment, which promotes the process of pepsin.

When that happens, pepsin is maximally active and works on a fully digestion of the presented protein.

On the other hand HCI prevents the activeness of the amylase, thereby only a small part of starch is digested.

Explanation:

The physiological significance of these effects are: salivary glands found in the mouth which has a neutral pH environment segregates amylase, meanwhile pepsinogen becomes pepsin thanks to the compatibility with this environment.

While pepsin is widely active at a lower pH inside the stomach, amylase activity, on the other hand decreases at lower pH environment.

4 0
3 years ago
Other questions:
  • A bar extends perpendicularly from a vertical wall. The length of the bar is 2 m, and its mass is 10 kg. The free end of the rod
    5·1 answer
  • A train is traveling at 28 m/s. It slows to 6 m/s in 4 s. Calculate the distance the train
    13·2 answers
  • Simple but not plagiarized answer for "what is forces and motion?"​
    6·1 answer
  • Three-fourths of the elements on the
    8·1 answer
  • Two energy transfers take place when a book hits the ground, Which type of energy transfers are those
    11·1 answer
  • Waves transfer _________________, not the _____________ with it. A ______________________ causes particles in matter to move bac
    9·1 answer
  • Can we make electromagnet with copper​
    12·2 answers
  • Two resistors R1 = 3 Ω and R2 = 6 Ω are connected in parallel. What is the net resistance in the circuit?​
    7·1 answer
  • Olivia is on a swing at the playground.
    14·1 answer
  • Ina shoots a large marble (Marble A, mass: 0.08 kg) at a smaller marble (Marble B, mass: 0.05 kg) that is sitting still. Marble
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!