Which best describes an example of an n-type semiconductor? 0 It uses phosphorus so that electrical conduction is due to the movement of electrons. It uses phosphorus so that electrical conduction is due to the movement of a positive charge. It uses gallium so that electrical conduction is due to the movement of electrons. It uses gallium so that electrical conduction is due to the movement of a positive charge.​

Red light strikes a metal surface and electrons are ejected. if violet light is now used with a 10% greater intensity, what will happen to the ejection rate (number of ejected electrons per second) and the maximum energy of the electrons? a) greater ejection rate; same maximum energyb) same ejection rate; greater maximum energyc) greater ejection rate; greater maximum energyd) same ejection rate; same maximum energye) none of the above answers are correct

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?

Aball horizontally thrown from a cliff at 8m/s