What is compression a) region of zero pressure in a medium caused by a passing wave b) region of high pressure in a medium caused by a passing wave c) region of low pressure in a medium caused by a passing wave d) region of high altitude in a medium caused by a passing wave

Aprojectile is launched horizontally 10m above the ground and with an initial velocity of 15 m/s. a) sketch the trajectory using an appropriate coordination system. b) how long for the projectile to reach the ground. c) how far did projectile travel horizontally before striking the ground. d) determine the projectilex & y position at t-1.3s e) determine the magnitude and direction of projectile velocity at t= 1.3s f) determine the magnitude and direction of projectile acceleration at t-1.3s

Could someone me find the answer to this problem.

The cerebellum controls? thirst sensations sleep-wake cycles hand-eye coordination heart rate and pulse