List down the components of air and each case, Outline atleast 3 uses of each component.​

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

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?