1. What are the two most common forms of waste energy? * Heat and light Heat and sound Light and sound Light and kinetic 2. Which of the following represents the energy transfers in a food mixer? * Electrical to heat Electrical to light and sound Electrical to kinetic Electrical to kinetic, sound and heat 3. What is the energy transfer that an electric guitar is designed to make? * Kinetic to sound Kinetic to elastic potential Kinetic to electrical Electrical to sound

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.