Un muelle cuya constante elástica vale 150 N/m tiene una longitud de 35 cm cuando no se aplica ninguna fuerza sobre él. Calcula la fuerza que debe ejercerse sobre el muelle para que su longitud sea de 45 cm

Which of these would be caused by a chemical change? a) the formation of lava. b) sedimantary rock layering over time. c) metamorphic rock forming from igneous. d) metamorphic rock eroding to form sedimentary rock.

What happens to the average kinetic energy of a gas when the particles of the gas collide against each other at a constant temperature and volume? explain your answer.

While in europe, if you drive 125 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car’s gas mileage is 32.0 mi/gal? assume that 1 euro=1.26 dollars