A 39 foot ladder is resting against a wall that is 36 feet high. What is the distance between the base of the ladder and the bottom of the wall?
5 feet?
15 feet?
10 feet ?

The first element on the periodic table of elements is carbon. a. true b. false

Name the element in group 17, period 2. (periodic table)

The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.