Misalan takamaiman tambayoyin ƙarfin zafi da zafi

Misalai 4 na takamaiman tambayoyin ƙarfin zafi da zafi

1. Wanne ne ke zafi da sauri idan aka busar da shi a rana mai zafi, aluminum ko jan ƙarfe? Takamaiman zafi aluminum = 900 J/kg ^oC da takamaiman zafin jan ƙarfe = 390 J/kg ^oC.

Tattaunawa

Da yawan zafin wani abu, da tsawon lokacin da zai ɗauka kafin abu ya yi zafi, akasin haka, ƙaramar zafin wani abu, da sauri yake yin zafi.

Takamammen zafin jan ƙarfe ya fi na aluminum ƙanƙanta, don haka jan ƙarfe yana zafi da sauri.

2. Abu mai nauyin kilogiram 2 yana shan kalori 100 na zafi idan zafinsa ya canza daga digiri 20.^oC zuwa 70^oC. Takamaiman zafin abin shine…..

Tattaunawa

An san cewa:

Nauyi (m) = 2 kg = 2000 gr

Kalori (Q) = 100 kalori

Canjin yanayin zafi (ΔT) = 70^oC - 20^oC=50^oC

An tambaya: Takamaiman zafin wani abu (c)

Amsa:

c = Q / m ΔT

c = 100 kalori / (2000 gr)(50)^oC)

c = 100 kalori / gram 100.000 ^oC

c = 10 ku² kal / 10⁵ gr ^oC

c = (10)² kal)(10^-5 gr^{-1 o}C^-1)

c = 10 ku^-3 zaman gr^{-1 o}C^-1

c = 10 ku^-3 cal/gr ^oC

Takamaiman zafin abin shine 10^-3 cal/g ^oC

3. Takamaiman zafin ruwa shine 4180 J/kg C^o. Ikon zafi na kilogiram 2 na ruwa shine…..

Tattaunawa

An san cewa:

Takamaiman zafin ruwa (c) = 4180 J/kg C^o

Mass (m) = 2 kg

An tambaya: Ƙarfin zafi (C)

Amsa:

C = mc

C = (2 kg)(4180 J/kg C)^o)

C = (2)(4180 J/C^o)

C = 8360 J/C^o

4. Takamaiman zafin aluminum shine 900 J/kg C^o. Ƙarfin zafi na gram 2 na aluminum shine…..

Tattaunawa

An san cewa:

Takamaiman zafin aluminum (c) = 900 J/kg C^o = 9 x10² J/kg C^o

Nauyi (m) = gram 2 = 2/1000 kg = 2/10³ kg = 2 x 10^-3 kg

An tambaya: Ƙarfin zafi (C)

Amsa:

C = mc

C = (2 x 10^-3 kg)(9 x 10² J/kg C^o)

C = 18 x 10^-3 x 10² J/C^o

C = 18 x 10^-1 J/C^o

C = ba 1,8 J/C^o