Answer:
B) is perpendicular to the magnetic field
Person a because it stays the same
Answer:
It is b
Explanation:
It’s not a the other comment is wrong.
Answer:
Explanation:
The Doppler effect occurs when a source of waves and/or observer move relative to each other, resulting in the observer measuring a different frequency of the waves than the frequency that the source is emitting.
Let use our case study.
It would be higher pitched when approaching due to the Doppler effect.
The sound waves as you approach them, travel faster relative to you so they pass more frequently which is higher pitched. when you travel away from the source you are out-speeding these waves so they sound slower and thus, lower-pitched.
When a car approaches bus, the sound waves that reach person on the bus have a shorter wavelength and a higher frequency. The person hear a sound with a higher pitch. When the car moves away from bus, the sound waves that reach the person have a longer wavelength and lower frequency. The person hear a sound with a lower pitch.
Answer:
The length is
Explanation:
From the question we are told that
The length of the hand is
The angle at the hand is held is
Generally resolving the length the length of the hand to it vertical component we obtain that the length of the shadow on the vertical wall is mathematically evaluated as
substituting values