Answer:
It is most likely option A B and C
Look up pulleys problem through Khan academy and a video should pop up with a problem similar and you should be able to walk through it .
Explanation:
thomas edison and Nikola tesla were involved in the war of currents
The ability of singers to shatter glass is due to the control of frequency in their voices. The sound waves will vibrate the air particles that surround the glass at its resonant frequency. The glass will break if a singer sings too loudly.
Answer: 172
Explanation: Because yeah