Select all of the answers that apply (< take notice to this part of my question)instruments used to monitor a volcano include - seismographs - richter scale - tiltmeters - correlation spectrometers - mercalli intensity scale

Two cannon balls weighing 18 kg and 24 kg are chained together and fired horizontally with a velocity of 165 m/s from the top of a 21-m wall. the chain breaks during the flight of the cannonballs and the 18-kg cannonball strikes the ground at t = 1.5 s, at a distance of 240 m from the foot of the wall, and 7 m to the right of the line of fire. determine the position of the other cannonball at that instant. neglect the resistance of the air.

Why does the liquid rise up through the dip tube when the valve is open

How does the motion of an airplane compare to the motion of a rocket ?