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For each of the following systems and time intervals, select the appropriate red

ID: 2172119 • Letter: F

Question

For each of the following systems and time intervals, select the appropriate reduced version of the equation below, the conservation of energy equation.
?K + ?U + ?Eint = W + Q + TMW +TET + TER (plz explain thank you )
(a) the heating coils in your toaster during the first five seconds after you turn the toaster on
a ?Eint = Q + TET + TER
b 0 = Q + TMT + TET + TER

c ?U = Q + TMT
d ?K = W + Q
e ?Eint = W + Q + TET
f ?K + ?U + ?Eint = W + Q + TMW + TMT
g ?U = W + Q + TMW + TMT

(b) your automobile from just before you fill it with gas until you pull away from the gas station at speed v
a ?Eint = W + Q + TET
b ?K = W + Q

c ?K + ?U + ?Eint = W + Q + TMW + TMT
d 0 = Q + TMT + TET + TER
e ?Eint = Q + TET + TER
f ?U = W + Q + TMW + TMT
g ?U = Q + TMT

(c) your body while you sit quietly and eat a peanut butter and jelly sandwich for lunch
a ?Eint = W + Q + TET
b ?K = W + Q

c ?Eint = Q + TET + TER
d ?U = W + Q + TMW + TMT
e 0 = Q + TMT + TET + TER
f ?U = Q + TMT
g ?K + ?U + ?Eint = W + Q + TMW + TMT

(d) your home during five minutes of a sunny afternoon while the temperature in the home remains fixed
a ?K + ?U + ?Eint = W + Q + TMW + TMT
b ?K = W + Q

c ?Eint = W + Q + TET
d ?U = W + Q + TMW + TMT
e 0 = Q + TMT + TET + TER
f ?Eint = Q + TET + TER
g ?U = Q + TM

Explanation / Answer

?Eint = Q + TET + TER ?U = W + Q + TMW + TMT