An asteroid with a diameter of 10 km and a mass of 2.6 x 1015 kg impacts the earth at a speed of 32 km/s, landing in the Pacific Ocean. If 1% of the asteroid's kinetic energy goes to boiling the ocean water (assuming an initial water temperature of 10°C), what mass of water will be boiled away by the collision? Let c=4190 J/(kg•K) and I, = 2256 x 10? J/kg.

During physical science, ms. greene challenged her students to produce an energy transformation. james and jill wrapped a 4-inch nail with a coil of fifty turns of wire. they connected one end of the coil to one terminal of a knife switch. they connected the other terminal of the knife switch to the battery. finally, they connected the end of the coil to the other terminal of the battery. james held the tip of a 1-inch nail near the flat end of the 4-inch nail. jill closed the knife switch quickly and then opened it. the 1-inch nail was pulled toward the 4-inch nail. what is the best explanation of why the nail moved? a) electrical energy was converted to mechanical energy in the 1-inch nail. b) the 4-inch nail became an electromagnet and the magnetic force attracted the 1-inch nail. c) the electric current in the 4-inch nail was converted to mechanical energy in the 1-inch nail. d) the 4-inch nail had a positive charge and the 1-inch nail had a negative charge. opposites attracted.

The air that we breath is made mostly of which gaseous molecule

Petroleum contains energy. a. light b. kinetic c. chemical d. mechanical