3. A student determined the Kf of t-butyl alcohol using tap water instead of distilled or deionized water. Describe the problems that might have been encountered. How would theses problems affect the magnitude of Kf.

Which two objects have the greatest gravitational force acting between them

Which example has gravitational potential energy? a. a horse slowing down from a run b. an apple about to fall from a tree branch c. a bicycle being pedaled down a horizontal path d. beaker sitting on the floor

The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.