Anoisy toy is placed in a glass jar all the air is then slowly removed from the jar how does this affect the sound you hear

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?

Frank just graduated from eighth grade. assuming exactly four years from now he will graduate from high school how many seconds does he have until his high school graduation