which situation might cause two observers (a and b) to measure different frequencies for the same vibrating object select the two correct answers
1) The object is moving towards observer A and away from observer B.
2) The object is undergoing doppler effect due to its motion relative to the observers.
There are several situations that could cause two observers (A and B) to measure different frequencies for the same vibrating object. The two correct answers are:
1. Doppler effect: When the object is in motion relative to the observers, the frequency of the waves emitted by the object can be affected by the Doppler effect. If observer A or B is moving towards or away from the object, they will measure a different frequency due to the compression or expansion of the waves.
2. Medium differences: If the vibrating object is producing waves that travel through different mediums, such as air and water, observer A and B may measure different frequencies. This is because the speed of sound waves varies depending on the medium through which they are traveling, resulting in a difference in observed frequencies.
There are two correct answers to the question of which situations might cause two observers (a and b) to measure different frequencies for the same vibrating object.
1. Doppler effect: If the vibrating object is in motion relative to the observers, they will measure different frequencies due to the Doppler effect. The Doppler effect is the change in frequency of a wave (such as sound or light) observed by an observer moving relative to the source of the wave. If the object is approaching observer a, the measured frequency will be higher for a, while it will be lower for observer b if the object is moving away from them.
2. Relative velocities: If observers a and b are moving at different velocities relative to the vibrating object, they will measure different frequencies. This is because the relative motion between the observers and the object will affect the wavelengths and thus the frequencies they observe. For example, if observer a is moving towards the object and observer b is stationary, observer a will measure a higher frequency than observer b.
To summarize, the two correct answers are the Doppler effect and relative velocities between the observers and the vibrating object.