A light dimmer consists of a variable inductor connected in series with a 100 W lightbulb. This simple circuit is supplied with 120 V (rms) at 60 Hz. The inductor can be adjusted to any value between zero and L max . What value of L max would let the dimmer vary the power dissipated by the bullb by a factor of 5.00 ? (Ignore the temperature‑dependance of the lightbulb's resistance.)

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.

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2

A58-kg boy swings a baseball bat, which causes a 0.140-kg baseball to move toward third base with a velocity of 38.0 m/s.