Guest Session: 1 Question Remaining. Create Account to save progress.
Login
Units & Conversionshard
0:00.0

Convert an Imperial thermal resistance R-value of R-21R\text{-}21R-21 (units: h⋅ft2⋅∘F/Btu\text{h}\cdot\text{ft}^2\cdot^\circ\text{F/Btu}h⋅ft2⋅∘F/Btu) to the metric equivalent RSI value (units: m2⋅K/W\text{m}^2\cdot\text{K/W}m2⋅K/W). (Take 1 ft≈0.3048 m1 \text{ ft} \approx 0.3048 \text{ m}1 ft≈0.3048 m, 1 Btu≈1055.056 J1 \text{ Btu} \approx 1055.056 \text{ J}1 Btu≈1055.056 J, and a temperature difference ratio of 1.8 ∘F=1 K1.8 \text{ } ^\circ\text{F} = 1 \text{ K}1.8 ∘F=1 K)