Q5) A semiconductor has an energy gap E,- 1.40 eV. If the electron mass and hole mass are 0.5x 10-31kg and 2.5 x 10-31 kg , respectively at T = 300-K, determine:
1. The position of the intrinsic Fermi level with respect to the middle of the energy gap.
2- The intrinsic concentration of charge carriers.
(17.5 Marks)

Slab pull” is a type of tectonic plate movement that occurs due to the forces of mantle convection and results in the subduction of the lithosphere true or false

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?

Atruck driver is attempting to deliver some furniture. first, he travels 8 km east, and then he turns around and travels 3 km west. finally, he turns again and travels 13 km to his destination. what is the drivers distance