1. use a micrometer to find the thickness of the foil. do your data confirm the measured
thickness? determine the percentage difference between the measured thickness and the
thickness you found in your experiment.

What property is a characteristic of a substance that can be observed and does not change the identity of the substance

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.

Wind and moving water provide energy. question 1 options: chemical mechanical thermal none of the above