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
Brut [27]
3 years ago
10

A galloping pony speeds past you at 5 m/s. The frequency of the sound produced by the hooves on the dirt is 221 Hz. Assume the s

peed of sound to be 342 m/s. What is the observed frequency of the hooves after the pony has passed your position?
1. 218 Hz
2. 226 Hz
3. 216 Hz
4. 224 Hz
Physics
2 answers:
kow [346]3 years ago
7 0
Given:
speed of passing pony 5 m/s
frequency of the sound produced: 221 Hz
speed of sound 342 m/s

Let us use the Doppler Shift Formula:
Where the <span>source is moving away from the observer at rest
</span>
f' = (v / v+vs) f
Where, vs<span> = Velocity of the Source,</span>
           v = Velocity of sound or light in medium,
           f = Real frequency,
           f' = Apparent frequency.

f'= [342 m/s / (342 m/s+5m/s)] * 221 Hz
f' = 0.9856 * 221Hz
f' = 217.8176 Hz or 218 Hz

The observed frequency <span>of the hooves after the pony has passed your position is 218 Hz.</span>
Studentka2010 [4]3 years ago
7 0
The answer is A) 218 Hz
You might be interested in
If a lever has an input arm of 80 cm and an output arm of 20 cm, what is its ideal mechanical advantage?
Alexeev081 [22]

Answer:

16

Explanation:

6 0
2 years ago
If an atom contains 13 protons, then it has (2.4)a.13 electrons. b. 26 electrons. c. 13 neutrons. d.26 neutrons.
Yuliya22 [10]

If an atom contains 13 protons, then it has <u>13 electrons.</u>

7 0
3 years ago
An object has a mass of 2,000kg. what is its weight on earth? show your work​
artcher [175]

Answer:

F=m*g is the formula and the answer is 19,620 kg

Explanation:

Since the formula is F=m*g and Earth's gravity is 9.81 m/s^2 all you need to do is multiply 2,000 by 9.81

6 0
3 years ago
Read 2 more answers
16. An object has a mass of 13.5 kilograms. What force is required to accelerate it to a rate of 9.5 m/s2?
V125BC [204]
D. 128.25 because force=mass x acceleration
8 0
4 years ago
Read 2 more answers
HELP
Digiron [165]
Speed is the answer
4 0
3 years ago
Other questions:
  • A ball is attached to the end of a massless string. A circus clown twirls the string with a pulling force of 12 N, and the ball
    11·2 answers
  • 1. A 2500 kg car enters a curve with a radius of 45 m If the car is moving at a speed of 35 m's, what is the
    11·1 answer
  • How many total atoms are in one molecule of lithium nitrate, LiNO3? 1 3 5 7 6
    9·2 answers
  • Which of these things poses the greatest hazard to communications satellites? a) photons from the Sun b) solar magnetic fields c
    12·2 answers
  • If the mass of the Moon were suddenly to double, and the distance to the moon cut in half, how would the gravitational force bet
    14·2 answers
  • In Hooke's law, Fspring=kΔx , what does the Fspring stand for?
    8·2 answers
  • An electron is moving directly toward you in a horizontal path when it suddenly enters a uniform magnetic field that is either v
    15·1 answer
  • Scientists today learn about the world by _____. 1. using untested hypotheses to revise theories 2. observing, measuring, testin
    7·1 answer
  • CAN YALL HELP ME WITH DIS PLZ
    11·2 answers
  • a low tide and a high tide occur in the oceans two times each day. which factor has the greatest effect on the size of the tides
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!