Dorothy works as a medical chemical in a pharmaceutical company. what could one of her assignments be?

She could be a spy sent from the Russian government that is collaborating with North Korea to spike every single prescription drugs known to man to destroy the pharmaceutical economy, making the United States prone to attack.

this means that the temperature of both substances will be equal

probably not the "magnets"in the magnet, so to speak, are thought to be electrons orbiting in shells. vurrent loops two sides to the loop