Which statement about energy generated from wind is true? a. wind is free "fuel," and government taxes on its use are lower than those on fossil fuel are b. wind power is abundant everywhere, and battery storage of excess power is inexpensive. c. wind power uses more water than coal power plants, but it is a far safer power source for wildlife. d. wind power gives off no greenhouse gases, but some people feel it spoils the view of the landscape.

Scout feels ill one day before school. her mother puts a thermometer in her mouth and the temperature begins to climb to 100°f. what is happening between the cooler thermometer and scout's body? a) scout's body is applying a force to the particles in the thermometer. b) kinetic energy is being transferred from her mouth to the thermometer. c) potential energy is being lost by the thermometer and gained by scout's body. d) the potential energy stored in foods is converted to mechanical energy to raise the mercury in the thermometer.

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

Una carga puntual de 3 x 10-6 c se coloca a 12 cm de una segunda carga puntual de - 1,5 x 10-6 c. calcular la magnitud fuerza eléctrica entre las cargas