POST TEST 17
Quiz
•
Physics
•
1st Grade
•
Practice Problem
•
Hard

mitra bintaro
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11 questions
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1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Berapa besar gaya gravitasi antara seorang siswa bermassa 40 kg dengan seorang siswi bermassa 30 kg yang berjarak 2 meter ? konstanta gravitasi umum = 6,67 x 10-11 N m2 / kg2
2 x 10^-8
4 x 10^-8
6 x 10^-8
2,5 x 10^-8
3 x 10^-8
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Berapa besar gaya gravitasi antara bumi dan bulan ?
Diketahui :
Massa bumi (mB) = 5,97 x 1024 kg
Massa bulan (mb) = 7,35 x 1022 kg
Jarak pusat bumi dan pusat bulan (r) = 3,84 x 108 meter
Konstanta gravitasi umum (G) = 6,67 x 10-11 N m2 / kg2
2,0 x 10^20 Newton
1,9 x 10^20 Newton
3 x 10^20 Newton
1,8 x 10^20 Newton
1 x 10^20 Newton
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Berat benda di Bumi adalah 10 N. Jika benda tersebut berada di suatu planet yang memiliki massa 4 kali massa bumi dan dengan jari-jari 2 kali lipat jari-jari bumi, maka berat benda tersebut berubah menjadi...
10 N
15 N
20 N
25 N
30 N
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Benda pada permukaan bumi memiliki percepatan gravitasi 1/6 g (g = percepatan gravitasi di permukaan bumi). Anggaplah Bumi bulat sempurna dengan jari-jari R, maka dimanakah benda tersebut terletak di atas permukaan bumi?
5R
6R
7R
8R
9R
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Perbandingan periode planet A dan B adalah 8 : 27. Jika jarak rata-rata planet A terhadap Matahari adalah 4 satuan astronomi (SA), maka jarak rata-rata planet B terhadap Matahari adalah … .
8
9
7
6
5
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Dua buah balok besar di atas meja dengan jarak antar pusat massa kedua buku sejauh 1,5 m. Massa masing-masing balok tersebut 0,5 kg dan 0,45 kg, maka besar gaya gravitasi yang dirasakan oleh kedua balok sebesar .... (G = 6,67 . 10-11 Nm²/kg²).
667 x 10^-7 N
677 x 10^-7 N
667 x 10^-8 N
667 x 10^--9 N
687 x 10^-7 N
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Bila jari – jari bumi sekitar 6,4. 106 m, maka kecepatan lepas roket yang akan diluncurkan vertikal dari permukaan bumi harus sebesar....
8.103 √3 m/s
9.103 √2 m/s
8.103 √2 m/s
9.103 √3 m/s
7.103 √2 m/s
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