Kuis Forum Diskusi Fisika Smp ( Tahap 1 )
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Pada sebuah percobaan pengukuran, seorang siswa menggunakan neraca, dan diperoleh hasil seperti pada gambar berikut :
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1,225 Kg
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1,045 Kg
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1045 Kg
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1225 Kg
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- 2.
Seorang siswa mengukur volume batu yang tidak teratur bentuknya dengan gelas ukur sebagai berikut :
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0,75 gram/cm3
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1,00 gram/cm3
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1,25 gram/cm3
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2,00 gram/cm3
Correct Answer
A. 2,00 gram/cm3Explanation
The answer 2,00 gram/cm3 is the correct answer because it represents the density of the irregularly shaped stone. Density is defined as the mass of an object divided by its volume, and it is usually measured in grams per cubic centimeter (g/cm3). In this case, the stone has a density of 2,00 gram/cm3, meaning that for every cubic centimeter of the stone, it has a mass of 2,00 grams.Rate this question:
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- 3.
Perhatikan gambar pemasangan kabel telepon berikut ! Cara pemasangan tersebut mempunyai tujuan ….
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Ketika terik matahari tidak putus
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Ketika malam hari tidak putus
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Agar memuai di waktu siang
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Menyusut di waktu malam
Correct Answer
A. Ketika malam hari tidak putusExplanation
The correct answer suggests that the purpose of the telephone cable installation is to ensure that it does not get disconnected during the night. This implies that the installation is designed to withstand any potential disruptions or interruptions that may occur during nighttime, ensuring uninterrupted communication.Rate this question:
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- 4.
Perhatikan grafik berikut ! Ibu memanaskan 2 Kg air seperti grafik diatas. Jika kalor uap air 2,27 x 105 J/Kg, dan kalor jenis air 4200 J/Kg0C, maka besar kalor untuk melakukan proses A-C adalah ….
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84.000 J
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454.000 J
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504.000 J
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958.000 J
Correct Answer
A. 958.000 JExplanation
The graph shows the heating process of 2 kg of water. To find the heat required for the process from point A to point C, we need to calculate the area under the graph between these two points. The area under the graph represents the heat absorbed by the water. From the graph, we can see that the area between A and C is a triangle with a base of 2 kg and a height of 479 °C. Therefore, the heat required for the process A-C is (1/2) x base x height = (1/2) x 2 kg x 479 °C x 4200 J/kg°C = 958,000 J.Rate this question:
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- 5.
Perhatikan peristiwa berikut !
- Gerak batu yang dilempar keatas
- Gerak mobil yang melalui jalan menurun
- Gerak kelapa yang jatuh dari pohonnya
- Mobil yang di rem
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1 dan 2
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1 dan 3
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2 dan 3
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1 dan 4
Correct Answer
A. 1 dan 4Explanation
Peristiwa gerak lurus berubah beraturan diperlambat terjadi pada gerak batu yang dilempar ke atas dan mobil yang di rem. Ketika batu dilempar ke atas, gerakannya akan berubah dari kecepatan positif menjadi kecepatan negatif saat ketinggian mencapai maksimum. Sedangkan ketika mobil di rem, gerakannya akan melambat dan akhirnya berhenti.Rate this question:
- 6.
Perhatikan gambar ! Jika massa jenis air akuarium 1 gram/cm3 dan percepatan grafitasi 10 m/s2, tekanan hidrostatik yang dialami ikan didalam akuarium tersebut sebesar ….
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800 Pa
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1.600 Pa
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80.000 Pa
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160.000 Pa
Correct Answer
A. 1.600 Pa -
- 7.
Perhatikan gambar berikut ! Pada peristiwa diatas, lampu menyala karena terdapat perubahan energy ….
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Kimia – listrik – cahaya - kalor
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Cahaya – listrik – kimia – gerak
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Kalor – gerak – listrik – cahaya
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Gerak – listrik – cahaya - kalor
Correct Answer
A. Gerak – listrik – cahaya - kalorExplanation
The correct answer is "Gerak - listrik - cahaya - kalor". In this scenario, the lamp lights up due to the conversion of mechanical energy (gerak) into electrical energy (listrik). The electrical energy is then converted into light energy (cahaya) by the lamp. Finally, some of the electrical energy is also converted into heat energy (kalor) as a byproduct of the lamp's operation.Rate this question:
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- 8.
Perhatikan gambar ! Rian mendorong motornya yang mogok menuju ke bengkel. Rian mengeluarkan gaya 400 N, sehingga motor bergeser 5 meter. Usaha yang dilakukan Rian adalah ….
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2000 Joule
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1500 Joule
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800 Joule
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200 Joule
Correct Answer
A. 2000 JouleExplanation
Rian mendorong motornya dengan gaya 400 N dan motornya bergeser sejauh 5 meter. Usaha dapat dihitung dengan rumus usaha = gaya x jarak. Dalam hal ini, usaha yang dilakukan Rian adalah 400 N x 5 m = 2000 Joule.Rate this question:
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- 9.
Perhatikan daftar peralatan dibawah ini !
- Gunting
- Katrol timba
- Gerobak sorong
- Tangga
- Palu untuk melepas paku
- Sekrup
- Pembuka botol
- Sekop
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1, 2, 3, 4, 6
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1, 3, 5, 7, 8
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2, 4, 6, 7, 8
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2, 3, 5, 6, 7
Correct Answer
A. 1, 3, 5, 7, 8Explanation
The tools that are considered as levers are those that can be used to exert force or lift objects by applying a downward force on one end. In this case, the tools numbered 1, 3, 5, 7, and 8 can all be used as levers.Rate this question:
- 10.
Grafik berikut melukiskan pola tali yang digetarkan dan membentuk gelombang transversal. Jika A dan B terpisah sejauh 60 cm, maka cepat rambat gelombang tersebut adalah ….
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10 cm/s
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15 cm/s
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20 cm/s
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30 cm/s
Correct Answer
A. 15 cm/sExplanation
Based on the given information, the graph depicts a pattern of vibrating strings that form transverse waves. It is mentioned that points A and B are separated by a distance of 60 cm. The speed of a wave is calculated by dividing the distance traveled by the time taken. Since the time is not given, we can assume that the time taken is the same for both points A and B. Therefore, the speed of the wave can be calculated by dividing the distance of 60 cm by the time taken. Since the distance is given in centimeters and the speed is asked in centimeters per second, the correct answer is 15 cm/s.Rate this question:
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Mar 20, 2023Quiz Edited by
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Oct 01, 2011Quiz Created by
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