The acronym AAOC stands for authority, accuracy, objectivity, currency, and coverage. Which of the following is an example of the evaluative criterion accuracy? The Web site that Jane is reading contains faulty facts and dates about events that occurred in World War II.

The Web site that Mary wants to use for her research paper about the latest trends in analyzing literature does not list an author.

The Web site that Joseph is using to study for an exam seems to have a skewed opinion about one scientific theory over another.

The Web site that David has quoted in his homework assignment does not list a bibliography or citations.

A23 kg log of wood begins from rest, 300 m up a sluice (a water track used to transport logs, think of it as an inclined plane with negligible friction) inclined at 20° to the horizontal. after it reaches the flat waterway at the bottom it collides elastically with a 100 kg block of wood initially at rest near the base of the incline. (a) how long does it take the 23 kg log to travel down the incline? (b) what is the speed of the 23 kg log at the bottom of the incline? (c) what are the velocities of both blocks of wood after the collision? (d) what is the total kinetic energy before the collision? (e) what is the kinetic energy of the 23 kg log after the collision? (f) what is the kinetic energy of the 100 kg block of wood after the collision? (g) what is the total kinetic energy after the collision? (h) compare the total initial and total final kinetic energies. is this consistent with what you would expect for elastic collisions? explain!

Which of the following is the phase that results when the moon is on the opposite side of the earth from the sun? a. quarter moon b. crescent moon c. new moon d. full moon

What is the kinetic energy of a baseball moving at a speed of 40 m/s if the baseball has mass of 0.15 kg?