c. What resistor would you put in series with the diode to prevent catastrophic failure even if the diode was hooked up to a 12V supply (e. g. car battery). What would the output in lumens be and what efficacy, lumens/W, could this circuit yield with a 3.0V supply

Will give brainliest! jay rides his 2.0-kg skateboard. he is moving at speed 5.8 m/s when he pushes off the board and continues to move forward in the air at 5.4 m/s. the board now goes forward at 13 m/s.a. determine jay’s mass.b. determine the change in the internal energy of the system during this process.(express your answer to two significant figures and include the appropriate units.)