According to the theory of plate tectonics, where should the seafloor be the youngest? immediately adjacent to the continents immediately adjacent to both sides of the mid-ocean ridge in the polar regions of earth around the southern tip of africa

Hydrogen and helium are both members of?

An electron in an x-ray machine is accelerated through a potential difference of 1.00 × 104 v before it hits the target. what is the kinetic energy of the electron in electron volts?

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.