1. a golfer takes two putts to sink his ball in the hole once he is on the green. the first putt
displaces the ball 3.4 m west. during his next putt, the ball is traveling at a constant
velocity of 2.3 m/s southward and it takes the ball 1.2 s to reach the hole. determine the
magnitude of the golf ball's resultant displacement.

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.