Physics, 30.06.2019 05:00 mooredollie
Atransistor with a height of 0.4 cm and a diameter of 0.6 cm is mounted on a circuit board. the transistor is cooled by air flowing over it with an average heat transfer coefficient of 30 w/m2 ·k. if the air temperature is 55°c and the transistor case temperature is not to exceed 70°c, determine the amount of power this transistor can dissipate safely. disregard any heat transfer from the transistor base.
Answers: 3
Physics, 21.06.2019 20:30
Aball is thrown straight up into the air with a speed of 21 m/s. if the ball has a mass of 0.1 kg, how high does the ball go? acceleration due to gravity is g = 9.8 m/s^2. a. 22.5 m b. 20.0 m c. 25.0 m d. 17.5 m
Answers: 2
Physics, 22.06.2019 10:30
The uniform slender bar rests on a smooth horizon- tal surface when a force f is applied normal to the bar at point a. point a is observed to have an initial acceleration aa of 20 m/s2, and the bar has a corre- sponding angular acceleration of 18 rad /s2. deter- mine the distance b.
Answers: 1
Atransistor with a height of 0.4 cm and a diameter of 0.6 cm is mounted on a circuit board. the tran...
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