Which situations might cause two observes (A and B) to measure different frequencies for the same vibrating object? Select the two correct answers
Observer A and Observer B are the both stationary and at the same distance from the object
Observer A and B are stationary but at different distances from the vibrating object
Observer A and observer B are moving at diffrent speeds relative to each other
Observer A stationary and Observer B is moving
Observer A and B are stationary but at different distances from the vibrating object
Observer A and observer B are moving at different speeds relative to each other
The correct answers are:
1. Observer A and B are stationary but at different distances from the vibrating object.
2. Observer A and observer B are moving at different speeds relative to each other.
The two correct answers are:
1. Observer A and Observer B are stationary but at different distances from the vibrating object.
Explanation: When two observers are stationary but at different distances from a vibrating object, they will measure different frequencies. This is because the frequency of a vibrating object is inversely proportional to the distance from the observer. The closer an observer is to the object, the higher the frequency they will measure, and vice versa.
3. Observer A and Observer B are moving at different speeds relative to each other.
Explanation: When two observers are moving at different speeds relative to each other, they will measure different frequencies. This is known as the Doppler effect. If an observer is moving toward a vibrating object, the frequency they measure will be higher than the frequency measured by a stationary observer. Conversely, if an observer is moving away from the vibrating object, the frequency they measure will be lower than the frequency measured by a stationary observer.