Awave x meters long has a speed of y meters per second. the frequency of the wave is
a. x/y hertz
c. y x hertz
b. y/x hertz
d. y x hertz

Which is not true about oxygen-17 and oxygen-18?

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?

If anyone who can me with this hw? i would really appreciate it