How can having a mentor individuals achieve their goals? a. mentors can increase accountability. b. mentors can increase motivation. c. mentors can identify areas that need additional work. d. all of the above select the best answer from the choices provided. a b c d

Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp = 875 j/kg°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.