The answer is B (400 j) because 10% gets taken off so it would go from 4,000 to 400 then to 40
I think the diameter of it is 0.03
Answer:
Doppler effect is a change in frequency and wavelength of a wave. It is caused by the change in distance between the thing creating the wave (causer) and whatever is measuring seeing or hearing the wave (watcher or observer). Another word for "causer" is "sender".
HOPE THIS HELPED!!!!!!!!!!!!!! XDDDD
Cells are combined in a structure called tissue wich have the same properties like the cells wich are formed by.