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
makvit [3.9K]
3 years ago
15

A train is traveling at 30.0 m/sm/s relative to the ground in still air. The frequency of the note emitted by the train whistle

is 262 HzHz. The speed of sound in air should be taken as 344 m/sm/s. Part A What frequency fapproachfapproachf_approach is heard by a passenger on a train moving at a speed of 18.0 m/sm/s relative to the ground in a direction opposite to the first train and approaching it
Physics
1 answer:
REY [17]3 years ago
3 0

Answer:

Explanation:

The problem is based on Doppler's effect , for which expression is as follows

n = \frac{n_o(V+v_o)}{(V-v_s)}

n is apparent frequency , n₀ is original frequency , V is velocity of light , v₀ is velocity of observer and v_s is velocity of source , both coming towards each other.

Putting the values

n = \frac{262(344+18)}{(344-30)}

n = 302 .

You might be interested in
Suppose you are in an elevator. As the elevator starts upward, its speed will increase. During this time when the elevator is mo
kkurt [141]

Answer:increased

Explanation:

It is given that elevator speed is increasing while moving upward i.e.its acceleration is increasing .

This causes the apparent to be increased if measured using weighing machine.

considering upward direction to be positive

N-mg=ma

N=m(g+a)

where N=Normal reaction=Apparent weight

a=acceleration of Elevator

thus you feel as if your weight is increased.

6 0
3 years ago
Could anyone can help me for this question I don’t understand how I can do?!! Please it really important!!
stiv31 [10]
Im sry i cant help u
6 0
3 years ago
In a certain region of space, the electric field is zero. from this fact, what can you conclude about the electric potential in
eduard
The answer is that it is constant. The relation between electric field and electric potential is given as, E=  -gradient (V).  The E, the partial rate of change of Electric potential, in the equation implies that the V, the partial differential of the potential of the three-dimensional space (assuming it is considered) is constant. 
5 0
2 years ago
You are faced with situations every day where you have to make choices, and there is a deep reason that compels you to do so. So
iren [92.7K]

Why did you put this here?

6 0
3 years ago
What is a transfer a wave
makkiz [27]

Energy is transferred in a wave

Energy is transferred, but mass is not.
4 0
3 years ago
Read 2 more answers
Other questions:
  • The triceps muscle in the back of the upper arm is primarily used to extend the forearm. Suppose this muscle in a professional b
    8·1 answer
  • How does losing an electron result in a positive charge?
    13·1 answer
  • How do the wavelength and frequency of red light compare to the wavelength and frequency of blue light?
    6·1 answer
  • Why are galaxies visible
    10·1 answer
  • Which of the following statements regarding heuristics and empiricism is true? A. Heuristics allows a priori theoretical concep
    8·1 answer
  • 9 write the Greek etymological meaning of Tracheophyta.​
    6·1 answer
  • List examples of foliated and non-foliated rocks. Explain the difference between the two types of metamorphic rocks.
    14·1 answer
  • Question 4 (point)
    5·1 answer
  • The number of dots near hydrogen and helium are the same as in the energy<br> level chart. Why?
    5·2 answers
  • Which list includes translucent objects only
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!