What is an accurate definition of a heat engine? a. a system that converts mechanical energy into thermal energy b. a system that creates thermal energy from the sun c. a system that converts thermal energy into other useful forms of energy d. a system that disperses mechanical energy into various reservoirs

Herbivores, carnivores, and omnivores are all types a. decomposers b. producers c. consumers d. biomes

Amodel rocket with a mass of 0.212 kg is launched into the air with an initial speed of 84 m/s. how much kinetic energy will the rocket have at a height of 214 m? assume there is no wind resistance. 634 j 303 j

Along the line connecting the two charges, at what distance from the charge q1 is the total electric field from the two charges zero? express your answer in terms of some or all of the variables s, q1, q2 and k =14ï€ïµ0. if your answer is difficult to enter, consider simplifying it, as it can be made relatively simple with some work.