Rate at which wave travels or propagates

If steel is more dense that lake water, why can a boat float

Which of the following is part of the explanation or description of electromagnetic waves? (select all that apply) a. electrically charged molecules in a medium transfer their energy to nearby electrically charged molecules. b. a changing electric field causes a changing magnetic field. c. magnetic molecules in a medium transfer their energy to nearby magnetic molecules. d. a changing magnetic field causes a changing electric field.

Aspring that is stretched 2.6 cm stores a potential energy of 0.053 j. what is the spring constant of this spring?