On average, the temperature of earth's crust increases 1.0 °c for every increase in depth of 30 m. the average thermal conductivity of earth's crust material is 0.74 j/(m · s · k). what is the heat loss of earth per second due to conduction from the core? how does this heat loss compare with the average power received from the sun? (the average power received from the sun on the earth is 1.37 kw/m^2.)

f=ma newton's second law 7x8=56n

graph slopes whilst gas cools, then it is flat whilst conensation to liquid happens, the coolong liquid then graphs as a slope when it solidifies graph is flat

latent heat

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