Write a paragraph explaining why you need to wash

Ответ:

jasonoliva13

25.01.2022

Everyone needs to wash their hands because if you touch something it might have germs. its always important to wash their hands because it helps us not to catch germs. washing hands is important because if you sneeze or cough in your arm or hands you have to wash your hand so you don't spread germs.

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Ответ:

dontcareanyonemo

11.04.2020

Physics

$T=283^{\circ}C$

Explanation:

Given a material with temperature coefficient of resistance c, the equation that relates the resistance R_0 at temperature T_0 and the resistance at temperature is

$\frac{R-R_0}{R_0}=c(T-T_0)$

We want to double our resistance, so R=2R_0 , thus having:

$\frac{2R_0-R_0}{R_0}=\frac{R_0}{R_0}=1=c(T-T_0)$

For this T must be:

1=cT-cT_0

$T=\frac{1+cT_0}{c}$

which for our values means (with $T=20^{\circ}C=293^{\circ}K$ , remember to write temperature in S.I., and that for silver $c=0.0038^{\circ}K^{-1}$ ):

$T=\frac{1+(0.0038^{\circ}K^{-1})(293^{\circ}K)}{(0.0038^{\circ}K^{-1})}=556^{\circ}K=283^{\circ}C$

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Write a paragraph explaining why you need to wash your hands

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