The shape is connected in parallel so;
5.1) Ans;

5.2) Ans;

I hope I helped you^_^
Answer:
All planets have an elliptical orbit
all planets have roughly the same SHAPE of orbit
I’m not sure but I think it’s
△ m=5 and △= -3 and so
Answer: 5/△-3 m/s
So sorry if it’s wrong
The amount of diffraction of sound waves depends on the medium the sound wave travels to and the frequency. Diffraction happens as soon as it has been out of the source.