12 suhu-dan-kalor
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This document discusses concepts related to heat and temperature including: - Temperature scales (Celsius, Fahrenheit, Kelvin, Reamur) and conversions between them. - Thermal expansion where materials increase in length, area, and volume when heated. - Heat transfer through conduction, convection, and radiation defined by formulas using coefficients, area, temperature change, and other variables. - Heat capacity and specific heat defined as the heat required to change an object's temperature. - Latent heat of fusion and vaporization required for phase changes between solid, liquid, and gas. - Blackbody radiation law that the heat emitted is related to the temperature raised to a power.
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12 suhu-dan-kalor
- 1. http://www.banksoal.sebarin.com SUHU DAN KALOR 01. C 100 Td Air R 80 100 Tb 0 80 0 F 212 K 373 180 32 100 273 C = celcius R = reamur F = fahrenheit tk = suhu dalam kelvin tc = suhu dalam celsius C:R:F=5:4:9 tK = tC + 273 Contoh : X Tb -20 Y 40 60 ? X : Y = 150 : 200 =3:4 4 (60 + 20) + 40 = 3 Td 130 240 Sifat termal zat diberi kalor (panas) 02. Muai panjang. L = Lo . . t Lt = Lo ( 1 + . t ) 03. Muai luas. A = Ao . . t At = Ao ( 1 + . t ) 04. Muai volume. V = Vo . . t Vt = Vo ( 1 + . . t ) Menaikkan suhu perubahan dimensi (ukuran) Perubahan wujud L = perubahan panjang 留= koefisien muai panjang Lo = panjang mula-mula t = perubahan suhu Lt = panjang saat to A = perubahan luas Ao = luas mula-mula 硫= koefisien muai luas V = perubahan volume Vo = Volume awal 粒= koefisien muai volume
- 2. http://www.banksoal.sebarin.com =2 } = Q = kalor m = massa c= kalor jenis t = perubahan suhu H = perambatan suhu =3 05. Q = m . c. t 06. Q = H . t 07. H = m . c 08. Azas Black. T1 Qdilepas Qdilepas = Qditerima TA Qditerima T2 09. Kalaor laten Q = m . Kl Kl = kalor lebur Kalor uap 09. Kalor lebur Q = m . Ku Ku = kalor uap Perambatan kalor. Konduksi H= k . A.t l Konveksi H = h . A . t Radiasi I = e . . T4 -----o0o----A = luas k = koefisien konduksi l = panjang bahan h = koefisien konfeksi I = Intensitas e = emitivitas bahan = konstanta Boltzman T = suhu