A student decided to conduct an investigation using two bar magnets in order to further investigate and explain the changes in the reading on the balance. Two bar magnets were placed on a table with opposite poles facing each other. A sheet of paper was paced on top of the magnets and iron filings were sprinkled on top of the paper to help visualize the field interactions. Which image best shows how magnetic fields interact when opposite poles face each other?

Simon is writing a story about an astronaut whose spacecraft has been boarded by space pirates. the astronaut has her lucky penny in her hand behind her back as the space pirates break into the control room. she has just locked the controls so that the ship is accelerating in the direction of the control room’s ceiling. simon wants the astronaut to use the penny to hit a button on the control panel to turn off the lights and escape. the button is located a short distance behind and below the astronaut’s hands. how should simon use the theory of relativity to describe what the astronaut must do in order to hit the button?