Suppose an air parcel starts from rest at the 800-hpa level and rises vertically to 500 hpa while maintaining a constant 1 c temperature excess over the environment. assuming that the mean temperature of the 800- to 500-hpa layer is 260 k, compute the energy released due to the work of the buoyancy force. assuming that all the released energy is realized as kinetic energy of the parcel, what will the vertical velocity of the parcel be at 500 hpa?

so easy. just google the electromagnetic waves and it’ll pop up.

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me

conservation of mass

mass before something happens = mass afterwards