Starting from rest, your friend dives from a high cliff into a deep lake below, yelling in excitement at the thrill of free-fall on her way down. You watch her as you stand on the lake shore immediately below, and at a certain instant your keen hearing recognizes that the usual frequency of her yell, which is 933 Hz, is shifted by 54.3 Hz.

What type of relationship exists between the length of a wire and the resistance, if all other factors remain the same? o a. resistance is directly related to length. ob. resistance is directly related to the square of the length. c. resistance is inversely related to the length. d. resistance is inversely related to the square of the length. reset next

By what primary heat transfer mechanism does the sun warm the earth?

Which of the following could represent a single-replacement reaction? a. element + compound = element + compound b. element + element = compound c. compound +compound = compound + compound d. compound = element + element