bonjour- pourriez vous m'aider avec cet exercice de physique : proposé en utilisant vos connaissances un compte rendu structuré et argumenté pour expliquer pourquoi le silicium est le semi conducteur préférentiellement utilisé pour la fabrication des capteurs photovoltaïques

Drag each item into the proper state of matter category.

The temperature at a point (x, y) is t(x, y), measured in degrees celsius. a bug crawls so that its position after t seconds is given by x = 6 + t , y = 8 + 1 3 t, where x and y are measured in centimeters. the temperature function satisfies tx(3, 9) = 5 and ty(3, 9) = 4. how fast is the temperature rising on the bug's path after 3 seconds? (round your answer to two decimal places.)

Suppose a soccer ball is kicked from the ground at an angle 20.0º above the horizontal at 8.00 m/s. the y-velocity is determined to be 2.74 m/s. how long will the ball be in the air? assume the ball lands at the same height at which it was kicked.