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An experimental study on the measurement of blackbody radiation intensity as a function of temperature, as well as the determination of the newton cooling constant. The study involves the use of various experimental techniques and data analysis methods, including the stefan-boltzmann law and the newton cooling law. Detailed information on the experimental setup, data collection, and data analysis procedures. It also includes the presentation and discussion of the results, as well as the calculation of relevant parameters such as the degree of confidence, relative error, uncertainty, and significant figures. The study aims to validate the theoretical relationships between the measured quantities and to provide a comprehensive understanding of the underlying physical principles. This document could be useful for students, researchers, and educators interested in the experimental investigation of thermal radiation and heat transfer phenomena.
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A. Hari/Waktu Pelaksanaan
B. Alat dan Bahan
C. Identifikasi Variabel
D. Definisi Operasional Variabel
E. Prosedur Kerja
F. Prinsip Kerja
G. Teknik Analisis Data
1. Hukum Stefan-Boltzman
a. Dilakukan plot grafik U (tegangan) terhadap log T (suhu) pada data pemanasan
b. Berdasarkan plot grafik tersebut, ditemukan M secara teori dengan persamaan:
4
Membuktikan hubungan :
4
4
c. Dilakukan analisis grafik dengan persamaan linear yang diperoleh yaitu ๐ฆ =
๐๐ฅ + ๐, sehingga diperoleh nilai M, dimana M = m.
d. Kemudian dilakukan perhitungan derajat kebenaran, kesalahan relatif,
ketidakpastian M, persen diff , dan AB dengan persamaan berikut :
1). Derajat Kebenaran
2
2). Kesalahan Relatif
3). Ketidakpastian
KRxM
4). Angka Berarti
AB = 1 โ Log (
โ๐
๐
5). Pelaporan Fisika
6). Persentase Perbedaan
Dimana, M teori
%๐๐๐๐๐ = |
๐๐ก๐๐๐๐โ๐๐๐๐๐๐ก๐๐๐ข๐
๐๐ก๐๐๐๐+๐๐๐๐๐๐ก๐๐๐ข๐
2. Hukum Pendinginan Newton
a. Dilakukan lagi plot grafik ln
๐โ๐๐
๐
0
โTs
terhadap t (waktu) pada data pendinginan sehingga
dihasilkan persamaan grafik linear :
b. Dimana pada hukum pendinginan newton digunakan persamaan :
ln
๐โ๐๐
๐ 0
โTs
= - kt (3.13)
c. Analisis grafik dengan persamaan linear diperoleh ๐ฆ = ๐๐ฅ + ๐ sehingga diperoleh
nilai k, dimana k = - m.
b. Hitung derajat kebenaran kesalahan relatif, dan ketidakpastian k dengan persamaan
berikut :
1). Derajat Kebenaran
2
2). Kesalahan Relatif
3). Ketidakpastian
๐พ๐ ๐ฅ ๐
100%
4). Angka Berarti
AB = 1 โ Log (
โ๐
๐
5). Pelaporan Fisika
Waktu
(s)
Temperatur
Tegangan
๐โ
๐
540 437.25 0.
600 433.05 0.
660 429.15 0.
720 425.35 0.
780 421.65 0.
840 418.65 0.
900 415.65 0.
960 412.55 0.
1020 409.65 0.
1080 407.05 0.
1140 404.25 0.
1200 401.65 0.
1260 399.25 0.
1320 396.95 0.
1380 394.65 0.
1440 392.45 0.
1500 390.15 0.
1560 388.15 0.
1620 386.15 0.
1680 384.05 0.
1740 382.25 0.
1800 380.35 0.
1860 378.65 0.
1920 376.85 0.
1980 375.15 0.
2040 373.55 0.
2100 372.05 0.
2160 370.35 0.
2220 368.95 0.
2280 367.35 0.
2340 365.85 0.
Waktu
(s)
Temperatur
Tegangan
๐โ
๐
2400 364.55 0.
2460 363.05 0.
2520 361.85 0.
2580 360.45 0.
2640 359.25 0.
2700 357.95 0.
2760 356.75 0.
2820 355.55 0.
2880 354.35 0.
2940 353.15 0.
3000 352.25 0.
3060 351.15 0.
3120 349.85 0.
3180 348.95 0.
3240 347.95 0.
3300 347.05 0.
3360 345.85 0.
3420 345.05 0.
3480 344.15 0.
3540 343.25 0.
3600 342.35 0.
3660 341.45 0.
3720 340.45 0.
3780 339.75 0.
3840 338.85 0.
3900 338.05 0.
3960 337.45 0.
4020 336.65 0.
4080 335.85 0.
4140 335.05 0.
4200 334.35 0.
h. Presentase Kesalahan
Kegiatan 2. Menentukan Konstanta Pendinginan Newton
Grafik 4.2 Hubungan antara waktu pendinginan dengan In
๐(๐ก)โ๐๐
๐๐โ๐๐
a. Nilai Konstanta Pendingin Newton
b. Derajat kepercayaan (DK)
c. Kesalahan Relatif (KR)
d. Ketidakpastian k(โk)
e. Angka Berarti
f. Pelaporan Fisika
C. Pembahasan
A. Kesimpulan
B. Saran