A student designs an experiment using an ideal gas, as shown here. Which variable change would most likely increase the volume of the system, as shown in the image?
A) decreasing both the pressure and the temperature
B) decreasing the temperature while increasing the pressure
C) decreasing the pressure while increasing the temperature
D) increasing the pressure while holding the temperature constant

Describe the path of the electric current through a circuit?

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?

Students in an introductory physics lab are performing an experiment with a parallel-plate capacitor made of two circular aluminum plates, each 11 cm in diameter, separated by 1.0 cm. how much charge can be added to each of the plates before a spark jumps between the two plates? for such flat electrodes, assume that value of 3×106n/c of the field causes a spark.