Lunung main ideas
use the diagram below to answer questions 1-3 on a separate sheet of paper.
north
sunlight
7
south
1. in the diagram, what season is it in north america?
2. would a person at each of the points a, b, and c see the sun? if so,
where would the sun be in the sky?
3. which is a person standing at point b seeing, sunrise or sunset?
explain.
building vocabulary

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.