Answer:
The pitch increases
Explanation:
This effect is called Doppler effect. Doppler effect occurs when the source of a wave (such as a sound wave) moves relative to a stationary observer. In particular, two situations can occur:
- When the sound source moves towards the observer, there is a decrease in the apparent wavelength as seen from the observer; since frequency is inversely proportional to wavelength, the observer hears a sound with apparent higher frequency, which corresponds to a higher-pitch sound.
- When the sound source moves away from the observer, there is an increase in the apparent wavelength as seen from the observer; since frequency is inversely proportional to wavelength, the observer hears a sound with apparent lower frequency, which corresponds to a lower-pitch sound.
In this case, the sound source is approaching you: so we are in the 1st situation, therefore the pitch of the sound increases.
Answer:
The answer is ""
Explanation:
In this question, the force value is given and the acceleration is missing that's why the calculation of the acceleration can be defined as follows:
Formula:
Answer:
a) The resistance of the calf between the electrodes is
b) The average resistivity of this part of the leg is
Explanation:
Hi
a) Using Ohm's law , solving for , we obtain
b) The volume of the calf is like a cylinder, so , with and , therefore . Then we can use , this is the average resistivity of this part of the leg.