When does a skydiver achieve terminal velocity? when gravity equals air resistance when gravity is greater than air resistance when air resistance acts on the diver and gravity does not when gravity acts on the diver and air resistance does not

Around faucet handle is part of a(n) a. lever b. screw c. inclined plane d. wheel and axle

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?

Daughter element the new element produced along with a decay particle in a nuclear transmutation 2. half-life the substance that decays in a nuclear transmutation 3. parent element the change of one chemical element into another by nuclear decay or radioactive bombardment 4. transmutation the time required for the decay of one-half of the atoms in a sample of radioactive material