We believe that all of the terrestrial planets had similar histories when it comes to impacts from space. explain how this idea can be used to date the formation of the martian highlands, the martian basins, and the tharsis volcanoes. how certain are the ages derived for these features (in other words, how do we check the ages we derive from this method)?

Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 µc of charge distributed uniformly along its length, and the other carries - 2.50 µc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?

Energy flows from the producer level to the level. is called

Patricia is trying to compare the average rainfall of new york to that of arizona. a comparison between these two states for the months of july through september would best be measured in