6. The shorter the wavelengths, the higher the frequency and energy. 7. Forces that are exerted by gases, liquids and solids normally are spread over a surface. 8. Plasmas interact strongly with magnetic fields and commonly exist at lower temperatures. 9. Torque has the units of force times length. 10. The action causing a rotation depends not only on the magnitude and direction of the applied force but also on the point of application.
