1. as volume increases, pressure (increases / decrease / stays the same).
2. if the volume is doubled the pressure (also doubles / is cut in half / stays the same).
3. what law is demonstrated by the graph?

The speed of light in a material is 0.50 c. what is the critical angle of a light ray at the interface between the material and a vacuum?

Large electric fields in cell membranes cause ions to move through the cell wall. the field strength in a typical membrane is 1.0 x 10 7 n/c. what is the magnitude of the force on a calcium ion with charge +e? what is its acceleration? is it possible for a particle with the same charge as as calcium to have a different acceleration if placed at this location? what would change the acceleration: mass of the particle? diameter of the particle?

Which of the following statements accurately describes the sign of the work done on the box by the force of the push? a. positive b. negative c. zero