Why is damage from sound waves is an issue on the launchpad but not in the air (I would have done more points for answering but I'm almost out sry. just pls answer and help.)

Standing side by side ,you and a friend step off a bridge at different times and fall for 1.6s to the water below. your friend goes first, and you follow after he has dropped a distance of 2.0m. when your friend hits the water, is the seperation between the two of you 2.0m or more than 2.0m? verify your answer with a calculation.

10 newton object is placed 3 meters from the fulcrum. at what distance on the other side would you need to place a 15 newton object to balance the lever? show your work!

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same