How does a photocopier use static electricity? a. positively charged ink is attracted to negatively charged paper c. negatively charged toner is attracted to a positively charged image b. positively charged ions power the machine d. negatively charged ink is repelled from the original onto the copy plate

Which changes of state do the labels represent? a: b: c:

Which sound characteristic is not affected by the relative motion of an object

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.