3. The oldest working steam engine was designed in 1779 by James Watt. Suppose the engine's efficiency is 8.0 percent. How much work must be done by the engine if 2.5 kJ is transferred by heat into the engine ? Please help

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.

a 2,000 calorie based diet.

in most common fires, oxygen is needed for an oxidation reaction to takes place. the combination of oxygen with any element as fuel can create fire and combustion will occur especially if wood, light materials and other combustible things are combine with oxygen.