Apoint charge q2 = -3.8 μc is fixed at the origin of a co-ordinate system as shown. another point charge q1 = 1.7 μc is is initially located at point p, a distance d1 = 8.5 cm from the origin along the x-axis

the charge q2 is now replaced by two charges q3 and q4 which each have a magnitude of -1.9 μc, half of that of q2. the charges are located a distance a = 2 cm from the oringin along the y-axis as shown. what is δpe, the change in potential energy now if charge q1 is moved from point p to point r?

Work = force × a. work b. energy c. distance d. momentum

Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. a) reforestation would not benefit many species because most forest species live on the ground. b) reforestation would take the longest time to be effective because trees take several years to grow. c) biological augmentation would benefit only a few species because is is typically not very effective. d) biological augmentation would take less time to ve effective because it targets the majority of prey species.

This energy transformation diagram represents the energy of a skateboarder moving along a half-pipe. as she skates toward the top of the half-pipe, her original kinetic energy is converted to potential energy and friction. how much of the energy is potential?