Batteries supply DC, direct current, which does not change in direction over time, though eventually they get exhausted.

Venn diagrams are used for comparing and contrasting topics. The overlapping sections show characteristics that the topics have in common, and the sections that are unique to each topic show the characteristics that apply to only that topic.

Which of the following describes the effect of a convex mirror on light rays? A. It reflects light rays inward. B. It reflects light rays outward. C. It has no effect on light rays. D. It has the same effect on light rays as a concave mirror.

Simone created a chart to summarize the energy transformations that take place when energy from the wind is used to generate electricity. Which best completes the chart?

What is the two-step procedure that congress follows when appropriating money

Which of the following quantities are vectors? Select all that apply. Which of the following quantities are vectors? Select all that apply. 27 J/s 1980 kg m/s due south 35 m/s 8.2 m/s2 north-west 3.2 mi straight up 2.9 m/s 2 293 K 200 s

A student is trying to calculate the density of a ball. She already knows the mass, but she needs to determine the volume as well. Which of the following formulas can be used to calculate the volume of the ball?

Is there such a thing as real time weather radar? why not?

Luke and Carrie are driving down a straight section of the interstate at 70 mph in Luke's new convertible. Carrie is drinking a soda in the passenger seat.

A force produces power p by doing work w in a time t. what power will be produced by a force that does six times as much work in half as much time?

A batter hits a baseball with a bat. The bat exerts a force on the ball. Does the ball exert a force on the bat?