The diagram above shows three models of carbon. Which statement is true about these models? (DOK 2)
A. Carbon-13 and Carbon-14 are isotopes, but Carbon-12 is not an isotope.
B. The Carbon-12 model is an anion, but Carbon-13 and Carbon-14 models are neutral.
OC. All three models are isotopes, but the Carbon-12 model is a cation.
D. All three models show neutral atoms that are all isotopes of carbon.

Awind turbine is rotating counterclockwise at 0.5 rev/s and slows to a stop in 10 s. its blades are 20 m in length. (a) what is the angular acceleration of the turbine? (b) what is the centripetal acceleration of the tip of the blades at t=0s? (c) what is the magnitude and direction of the total linear acceleration of the tip of the blades at t=0s?

Match each scenario to the form of energy it represents

The magnitude of the magnetic field at a certain distance from a long, straight conductor is represented by b. what is the magnitude of the magnetic field at twice the distance from the conductor? a. at twice the distance, the magnitude of the field is 4b. b. at twice the distance, the magnitude of the field is 2b. c. at twice the distance, the magnitude of the field is b/2.d. at twice the distance, the magnitude of the field is b/4.e. at twice the distance, the magnitude of the field remains equal to b.