So it could fit perfectly.
Explanation:
It stretched or compresses the sound waves it is producing if it is relatively moving away to getting closer respectively. This is called the <u>Doppler shift effect</u>..
This is why when a wailing ambulance approached you, the pitch of its wailing is high but when it passes you and moves away from you the pitch of the wailing lowers. Remember this is happening relative to your position.
Answer:
The changing variables are: v and KE
Explanation:
Given

Required: What changes?
From the formula above:



m: The mass of the skater is constant.
v: Moving up and down the track may change the velocity of the skater.
KE: When velocity changes, the kinetic energy also changes
So:
The changing variables are: v and KE
Answer:
Following are the four combinations of active or inactive regulatory proteins that could be present anytime in the cell:
Active repressor , Active activator.
Active repressor, Inactive activator.
Inactive repressor, Active activator.
Inactive repressor, Inactive activator.
Explanation:
Use the attached diagram for
explanations on the four combinations of active or inactive regulatory proteins in cells.