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
Anastaziya [24]
2 years ago
9

Which situations might cause two observers (A and B) to measure different frequencies for the same vibrating object? Select the

two correct answers.
A. Observer A is stationary and Observer B is moving.
B. Observer A and Observer B are moving at different speeds relative to each other.
C. Observer A and Observer B are stationary but at different distances from the vibrating object.
D. Observer A and Observer B are both stationary and at the same distance from the object.
Physics
2 answers:
Serhud [2]2 years ago
8 0

This question involves the concept of doppler's effect and its effect on the frequency of sound.

The situations that might cause the two observers to measure different frequencies for the same vibrating object are:

"A. Observer A is stationary and Observer B is moving.

B. Observer A and Observer B are moving at different speeds relative to each other."

Doppler's effect states that the apparent frequency of a source of sound is different than its original frequency. It further explains that whenever an observer and the source are in relative motion with each other, either the source or the observer or both are moving, then the frequency of sound measured by the observer will be different than the actual frequency. This changed frequency is called the apparent frequency and it depends upon the direction and magnitude of the relative motion of the observer and the source.

Hence, the measured frequency can be different for the two observers if they are in relative motion with the source, with different speeds, or in the case when one observer is stationary while the other is in motion.

Therefore, the situations that might cause the two observers to measure different frequencies for the same vibrating object are:

<u>A. Observer A is stationary and Observer B is moving. </u>

<u>B. Observer A and Observer B are moving at different speeds relative to each other.</u>

<u />

Learn more about Doppler's Effect here:

brainly.com/question/1330077?referrer=searchResults

The attached picture illustrates the formulae of Doppler's Effect.

diamong [38]2 years ago
7 0

Answer: The answer is (B) Observer A and Observer B are moving at different speeds relative to each other. And (A) Observer A is stationary and Observer B is moving

Explanation:

You might be interested in
If a vibrating string is made shorter (i.e., by holding your finger on it), what effect does
Ghella [55]
  <span>Pitch and frequency are more or less the same thing - high pitch = high frequency. 
The freqency of vibration of a string f = 1/length (L) so as length decreases the frequency increases.</span>
4 0
3 years ago
Is O2 classified as a compound?
dybincka [34]

Answer: NO.

Explanation: Oxygen is not a compound. It has only one element in it.

3 0
3 years ago
An object is thrown upwards with the speed of 40.0 km/hr in 5 second, calculate the distance in millimeters (mm).
sertanlavr [38]
V=(40km/hr)(hr/3600s)(1000000mm/km)
v=11111.1mm/s

v=d/t
d=vt
d=(11111.1mm/s)(5s)
d=55555mm
d=5.56x10^4mm
4 0
3 years ago
A softball has a (positive/negative) acceleration when it is thrown. A soft ball has a (positive/negative) acceleration when it
Nadusha1986 [10]

Answer

A softball has a (negative) acceleration when it is thrown. A soft ball has a (positive) acceleration when it is caughtExplanation:

8 0
3 years ago
A farmer hitches her tractor to a sled loaded with firewood and pulls it a distance
Delvig [45]

(a) The work done by the force applied by the tractor is 79,968.47 J.

(b) The work done by the frictional force on the tractor is 55,977.93 J.

(c) The total work done by  all the forces is 23,990.54 J.

<h3>Work done by the applied force</h3>

The work done by the force applied by the tractor is calculated as follows;

W = Fd cosθ

W = (5000 x 20) x cos(36.9)

W = 79,968.47 J

<h3>Work done by frictional force</h3>

W = Ffd cosθ

W = (3500 x 20) x cos(36.9)

W = 55,977.93 J

<h3>Net work done by all the forces on the tractor</h3>

W(net) = work done by applied force  -  work done by friction force

W(net) = 79,968.47 J -  55,977.93 J

W(net) = 23,990.54 J

Learn more about work done here: brainly.com/question/25573309

#SPJ1

4 0
1 year ago
Other questions:
  • What are the two most important properties of a telescope?
    5·1 answer
  • A bigger pushing force does make the brick slide across the table.write down one thing that the sliding brick will do to the sur
    7·2 answers
  • Chemical, gravitational, and elastic are examples of types of what? A. systems B. potential energy C. kinetic energy D. engines
    8·1 answer
  • If a car travels 400m in 20 seconds how fast is it going? 20 m/s
    5·1 answer
  • The speedometer in your car reads 55 mi/h. This represents the what of the car
    6·2 answers
  • Please help me with this one
    6·1 answer
  • An elevator is being pulled up from the ground floor to the third floor by a cable. The cable is exerting 4500 newtons of force
    13·1 answer
  • Nighttime is the result of
    15·2 answers
  • How does the electric force between two charged particles change if the
    12·1 answer
  • An AC voltage source is connected to a resistor R = 1.90 102 Ω. The output from an AC voltage source is given by the expression
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!