Fluida statis
Quiz
•
Physics
•
11th Grade
•
Practice Problem
•
Medium
anggit trianggraini
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20 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
tekanan hidrostatis pada suatu titik di dalam bejana yang berisi zat cair ditentukan oleh:
1. massa jenis zat cair
2. volume zat cair
3. kedalaman titik dari permukaan zat cair
4. bentuk bejana
1 dan 3
2 dan 4
1, 2, dan 3
1, 2, 3, dan 4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
jika tekanan hidrostatis pada kelaman h adalah P. Maka pada kedalaman 2h tekanan hidrostatisnya sebesar....
2 P
4 P
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
zat cair memiliki kerapatan 1020 kg/m3. tekanan zat cair akan menjadi 101% dari tekanan pada permukaan (dengan tekanan atmosfer = 1,01 x 105 N/m2) pada kedalaman permukaan.... (g = 10 m/s2)
9,9 cm
10,0 cm
10,1 cm
10,2 cm
Answer explanation
dik:
ρ = 1020 kg/m3
P0 = 1,01 x 105
P = 101 %P0 = 1,01 P0
dit:
h = ?
jawab:
P = P0 + ρgh
1,01 P0 = P0 + (1020) (10) h
0,01 P0 = 10200 h
0,01 (1,01 x 105) = 10200 h
h = 0,099 m = 9,9 cm
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pak Ali ingin membuat sebuah dongkrak hidrolik. Dongkrak tersebut akan dibuat dengan perbandingan gaya F1 : F2 = 1 : 200. Jika penghisap besar memiliki luas penampang 0,4 m2 maka luas penghisap kecil adalah....m2
2.0
0,2
0,02
0,002
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
sepotong kaca di udara memiliki berat 25 N dan massa jenis 2,5 x 103 kg/m3. Bila massa jenis air 1000 kg/m3 dan percepatan gravitasinya 10 m/s2 maka berat kaca didalam air adalah?
5 N
35 N
15 N
25 N
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
sebuah kolam renang dalamnya 5,2 m berisi penuh air. Berapakah tekanan hidrostatis suatu titik yang berada 40 cm diatas dasar bak?
(ρ = 1 g/cm3 dan g = 10 m/s2)
48 kPa
52 kPa
4,8 kPa
5,2 kPa
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pada suatu percobaan, Pak Heri memasukkan tabung secara vertikal ke dalam air, sehingga dihasilkan sudut kontak 60o. Akibatnya, terjadi kenaikan air pada tabung setinggi 4 cm. Jika jari-jari tabung 0,1 cm dan massa jenis air 1.000 kg/m3, tegangan permukaan yang dialami oleh air adalah ….
0,004 N/m
0,04 N/m
0,4 N/m
4 N/m
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