Which of the following statements are true concerning the creation of magnetic fields? Check all that apply. a. A distribution of electric charges at rest creates a magnetic field at all points in the surrounding region. b. A permanent magnet creates a magnetic field at all points in the surrounding region. c. An electric current in a conductor creates a magnetic field at all points in the surrounding region. d. A moving electric charge creates a magnetic field at all points in the surrounding region. e. A single stationary electric charge creates a magnetic field at all points in the surrounding region.

Which of the following are guidelines to follow for obtaining accurate observations

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?

Why is a noble gas different from other elements?