Which of the following statements is true?
1. light energy is a form of potential energy only.
2. light energy does not require a medium through which to travel.
3. light energy does not serve any useful purpose.
4. light energy is the same as sound waves.

2points what is the job of a scientist? a. to answer ethical questions. b. to write laws based on his or her knowledge. c. to ask and answer scientific questions. d. to ignore facts that do not support his or her theory.

Which of the following contributes to the structural rigidity of cellulose? adjacent glucose polymers are stabilized by hydrogen bonding. glucose residues are joined by (α1→4) linkages. cellulose is a highly branched molecule. the conformation of the glucose polymer is a coiled structure.

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table