When you sit in a chair it exerts against you

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

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.

Which is a substance that can be separated by physical means and is not the same throughout