sebongkah es dengan massa 200 gram memiliki suhu -5 c. jika es tersebut ingin diubah menjadi air yang bersuhu 20 c, berapakah kalor yang harus diberikan? (kalor jenis air = 4200 J/kg, kalor jenis es = 2100 J/kg, dan kalor lebur es = 336 KJ/kg)

An experiment is designed to test the relationship between the initial height of a basketball before it is dropped to the height of its rebound bounce. the height of the rebound bounce is measured using a scale positioned behind the ball. in the above experiment, which condition would not be controlled? a). the starting height of the ballb). the surface the ball bounces on c). the type of ball d). the method to measure the rebound height of the ball

Can somebody explain to me how newton's 3rd law relates to momentum? ~ap physics 1

Acoal-fired plant generates 600 mw of electric power. the plant uses 4.8 x 10^6 kg of coal each day, and the heat of combustion of coal is 3.3x 10^7 j/kg. the steam that drives the turbines is at a temperature of 300° c, and the exhaust water is at 37° c. (a) what is the overall efficiency of the plant for generating electric power? (b) how much thermal energy is exhausted each day? (c) what is the change in entropy of the universe for this heat engine? (d) using the same heat reservoirs, what is the maximum possible (carnot) efficiency for a heat engine?