Un niño empuja una carreta con su perro dentro. La masa del perro y la carreta juntos es de 45 kg. La carreta
acelera a 0.85 m/s2
. ¿Cuál es la fuerza ejercida por el niño?

Inside of a windmill or a dam is a that is used to transform one type of energy into electrical energy. a. motor b. generator c. transformer d. power pack

The magnitude of the amount of energy released by burning a fuel source, measured in energy per unit mass, is called its fuel value. note that the fuel value is the negative of the isobaric specific heat of combustion for the fuel. if all the energy obtained from burning 1.23 pounds of butane with a fuel value of 10.85 kcal/g is used to heat 128.0 kg of water at an initial temperature of 18.3 °c, what is the final temperature? note that 1 lb = 453.6 g.

What is the role of lenses in microscopy?