Find the current that flows in a silicon bar of 10-μm length having a 5-μm4-μm× free electron and hole densities of 105 cm3 μn = 1200 cm2⁄ ⁄ 1 mA μm2 ⁄ ⁄ μp = 500 cm2⁄ V. s. cross section and having and 1015 cm3 , respectively, when a 1 V is applied end

The velocity of car is 80.0 miles per hour. what is the velocity of car in meters per second? (1 km -0.621 miles) m/s

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

Brutus, the dog, is pulling a bone to the left with a force of 20 n. lassie, another dog, is pulling a bone to the right with a force of 18n. what is the net force? a. b. c.