Four point charges each having charge Q are located at the corners of a square having sides of length a.
(a) Find symbolic expressions for the work required to bring a fifth charge q from infinity to the center of the square.

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.

Yvette hangs a 2.4kg bird feeder in the middle of a rope tied between two trees. the feeder creates a tension of 480 n in each side of the the rope.

Failure to accomplish erikson’s psychosocial task of late adulthood leads to despair. a. true b. false