I believe the answer would be C because potential energy is affected by height and mass. The truck in photo C is the highest and has a lot of mass.
Answer:
884Hz
Explanation:
Beats is the absolute difference between two frequencies therefore
Beats = f1-f2
4=f1-880
F1=880+4
F1=884Hz
The answer to question one is A.
The answer to question two is A.
The answer to question three is D.
C
Explanation:
that's just what I learned in school
I believe the correct answer is atmosphere (D).
