Question

Preciso de ajuda com FÍSICA!!! Converta: a) 32°F em K b) -10 °F em K c) 100 K em °F

Answer 1

Resposta:

a) 273 K

b) 249,67 K

c) -279,4 °F

Explicação:

A expressão de conversão entre graus Celsius (c), graus Fahrenheit (f) e Kelvin (k) é:

$\dfrac{c}{5}=\dfrac{f-32}{9}=\dfrac{k-273}{5}$

a) $f = 32\°F$

$\dfrac{32-32}{9}=\dfrac{k-273}{5}\\\\k-273=0\\\\\setlength{\unitlength}{.3in}\put(0,2){\framebox(2.5,0.8){k = 273\,K}}$

b) $f = -10\°F$

$\dfrac{-10-32}{9}=\dfrac{k-273}{5}\\\\k-273=\dfrac{-210}{9} \\\\\setlength{\unitlength}{.3in}\put(0,2){\framebox(3,0.8){k = 249,67 \,K}}$

c) $k = 100 \,K$

$\dfrac{f-32}{9}=\dfrac{100-273}{5}\\\\f-32=\dfrac{-1557}{5}\\\\\setlength{\unitlength}{.3in}\put(0,2){\framebox(3,0.8){f = -279,4 \°F}}$