Question

Quizz ★★★★✬


[tex]jangan \: ngasal \: \: + \: \: yang \: jelas \: [/tex]

.........​

Answer 1

Verified answer

Jawaban:

18.

Lt = Lo + ∆L

= 20 + ( ɑ . Lo . ∆T)

= 20 + (1,2 . 10^-5 . 20. 80)

= 20 + 0,0192

= 20,0192 m

19.

Lt = 10 + (1,2 . 10^-5 . 10 . 50)

= 10 + 0,006

= 10,006 m

20.

50 cm = 0,5 m

0,5011 = 0,5 + (1,1 . 10^-5 . 0,5 . ∆T)

0,5011 - 0,5 = 1,1 . 10^-5 . 0,5 . ∆T

0,0011/ 1,1 . 10^-5 . 0,5 = ∆T

∆T = 200

To = 256 - 200 = 56° C

ket:

ɑ = koefisien muai panjang

Lo = panjang mula² (m)

Lt = panjang akhir (m)

∆T = perubahan suhu

To = suhu mula²

∆L = perubahan panjang