Which of the following is not a type of system?

Mechanical Ecological Social Classical

Geocentric theory: a. was initially rejected b. was in contradiction to the ideas of Ptolemy c. stated that the sun revolved around the earth d. all of the above

A medical facility does MRIs for sports injuries. Occasionally a test yields inconclusive results and must be repeated.

What is the function of DNA polymerase? A. jadding base pairs B.) correcting errors C.) both adding base pairs and correcting errors D.) neither adding base pairs nor correcting errors

Gina designed a model to show the steps in the nebular theory of formation of planetary systems. which of these diagrams best represents the second step of gina's model? A.) condensation and contraction of cloud do to gravity B.

Frances drew a diagram to show electromagnetic induction. A grey cube at left labeled N and a grey cube at right labeled S. A copper colored rod runs vertically between the cubes. Red arrows labeled X run from N to S.

Two copper wires with different diameters are joined end to end. If a current flows in the wire combination, what happens to electrons when they move from the larger-diameter wire into the smaller-diameter wire?

A baseball player is warming up and tosses a ball straight up into the air. The ball travels up until it reaches some maximum height, and then falls back down to the player/'s hand.

Volume can be measured in liters or cubic meters. a. T b. F

A spring with a spring constant of 1200 N/m has a 55-g ball at its end. The energy of the system is 5.5J. What is the amplitude of vibration?

Force F1 acts on a particle and does work W1. Force F2 acts simultaneously on the particle and does work W2. The speed of the particle does not change. Which one of the following must be true? a. W1 is zero, and W2 is positiveb. W1 = - W2c.