Which of the following substances would release the most amount of heat when they cool from 50oc to 25oc if you started with equal masses of each?
aluminum, 0.920 j/goc
cast iron, 0.461 j/goc or
lead, 0.126 j/goc

Explanation:

Hello,

Based on the formula:

Δ

By assuming that both the mass and the temperature difference is equal for all the metals, the most amount of heat loss will be experienced by the aluminium since it has the highest heat capacity (more released or absorbed energy per unit of mass by degree Celsius).

Best regards.

answer: the figure is attached herewith.

step-by-step explanation:   we are given to sketch a unit circle and label the terminal points corresponding to

in the attached figure, we have drawn a unit circle, with centre at o(0,0) and radius 1 unit. we have labelled the points a, b, c, d and e corresponding to the angles below

∠aox = 60°,

∠box = 120°,

∠cox = 180°,

∠dox = 240°,

∠eox = 300°.

and the coordinates are a(0.5,1), b(-0.5,1), c(-1,0), d(-0.5,-1) and e(0.5,-1).

thus, the answer is complete.