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Pertanyaan
Pertanyaan
Sampaikan pertanyaan menganai kesulitan belajarmu kepada tim narasumber yang kompeten. Kamu harus login JSS terlebih dahulu untuk mengajukan pertanyaan, klik di sini untuk login JSS
sebuah kapal laut menggunakan sonar untuk mendeteksi kedalaman laut.Gelombang suara ditransmisikan dan memiliki cepat rambat sebesar 1450 m/s.Jika kedalaman laut ternyata adalah 1630 m di bawah permukaan,hitunglah selang waktu yang terlalui sebelum gelombang kembali ke kapal lautnya?
Perjalanan sonar di dalam air laut adalah dua kali yaitu pergi dan pulang, sehingga berlaku rumus : 2S = v.t
sehingga t = 2S/v = 2x1630 / 1450 = .............
seekor burung hinggap di pohon pada ketinggian 80 m seorang pemburu yang berjarak 100 m daru burung dalam arah mendatar melepaskan tembakan dangan sudut elavasi 45o agar peluru tepat mengenai burung tentukan kecepatan peluru..??
Soal ttg gerak parabola.
Sb - X GLB dan Sb - Y GLBB
utk Sb - X
X = Vox. t (Vox = Vo.cos 45)
100 = Vo. 1/2√2.t diperoleh t = 100√2/Vo (*)
Utk Sb - Y
Y = Voy.t -1/2gt2 (Voy = Vo.sin 45)
80 = Vo.1/2√2.t -1/2.10.t2 (**)
Silahkan masukkan harga t anda akan dapat persamaan kuadrat Vo, pasti ketemu.
dear kakak/guru-guru
saya ingin bertanya bagaimana cara membuat kata" mengunakan kata " there " yang di gabungkan dengan modals, dan membuat kata interrogativenya.
terimakasih.
there adalah kata sebagai kata pengganti subject . contoh:
there are many children.
there will be a big storm.
there will be a new teacher.
dll
Maaf jiga saya menganggu bpak/ibu tolong buatin dialog tntang expressions of pleasure/happiness . makasih
Hilal : Hi, Najmi! Haven’t seen you for a long time. How is it going?
Najmi : Oh, hi Hilal….. It’s great, thanks. How is everything with you?
Hilal : Well, I’m fine. As a matter of fact, I was promoted as a manager.
Najmi : Wow, that’s really great. I’m glad to hear that. I’m sure you will have a good career.
Hilal : Thank you. And how about you? I’ve heard you are a secretary now.
Najmi : Yes, you’re right. That’s what I want since I was young.
Text 2
Najmi : Have you ever heard that Icha and Doni are getting married?
Hilal : Oh, really? What a surprise. I’m very pleased to hear that. When is the wedding?
Najmi : Next week. Will you come to their wedding party.
Hilal : Of course. How about you?
Najmi : I’ll go there with my husband. Well, if you want we can go there together.
Hilal : All right. Pick me up at 1.
my star com
tolong berikan contoh announcement bertema school anniversary & mothers day. tapi sedikit aja. thankU:-)
ANNOUNCEMENT
Pay Attention! TO COMMEMORATE OUR SCHOOL ANNIVERSARY.
Our school will have a Debate Competition
Participants : All students in our school
It will be held from 10th – 12th August 2009
Prizes : I Rp. 2.000.000,-
II Rp. 1.500.000,-
III Rp. 1.000.000,-
Please join us!
pak/bu saya ingin bertanya : apa comment or opinion yang harus saya nyatakan di artikel ini : mohon segera dijawab .. makasih
MOHAMMAD HUSNI THAMRIN
Mohammad Husni Thamrin was born on February 16, 1894 in Sawah Besar, Jakarta.After graduating his education in Koning Willem III, a kind of SMA, he worked at the Kepatihan office.Because of his good reputation, he was promoted to work at the Karesidenan office and finally worked in Koningklijke Paketvaart Maatschappij (KPM)
Husni Thamrin was one of the leaders of the Indonesian freedom movement during the Dutch colonial era. He was one of the national heroes who had actively participated in the struggle for Indonesian independence. He did not fight physically by taking up weapons. He fought another kind of battle that was not less important.
In 1919 Thamrin was appointed member of the City Council. In 1923 Thamrin was appointed leader of “Organisasi Kam Betawi” which aimed at developing trade and commerce, education, and social health. Because of his qualification and great influence, then he was appointed assistant to the mayor of Batavia.
In 1927 he was appointed member of the People’s House of Representatives (Dutch : volksraad). He thought he could do more for his people. He delivered more speeches, wrote more articles, and became more active in a number of national organizations.
Through his continual efforts, a number of national organizations were fused into one big organization which was more capable of joining efforts to fight for Indonesia’s independence. The Dutch colonial government feared this organization and many of its leader were arrested. Although the Dutch had prohibited political activities undertaken by the national leaders, this prohibition was often violated.
Since the 6th of January 1941 Husni Thamrin had been put under house arrest. He was charge with collaborating with the Japanese. In spite of his serious illness, he was not allowed to receive any visitors, except his personal physician. Day and night he was under police surveillance. He died on the 11th of January 1941 and was buried in the Karet cemetery, Jakarta.
I am very proud of Mr.Tamrin. He was brave and dedicated his live for this nation.
Tri Raharjo, S.Pd 29 November 2012 0:0
seutas dawai dengan pajang 90 cm bergetar dengan nada atas pertama berfrekuensi sebesar 300 Hz maka tentuhka
a. cepat rambat gelombang
b. frekuensi nada atas keuanya
c. frekuensi nada atasnya
Nada atas pertama membentuk pola satu panjang gelombang (λ), jadi λ = 90 cm = 0,9 m, maka
a. v = λ.f = 0,9 x 300 = .......
b. nada atas kedua membentuk pola 1,5 λ = 90 maka λ = 60 cm = 0,6 m
f = v/λ = 270 / 0,6 = .....
c. pertanyaan soal kurang jelas
air dalam tangki memancar keluar melalui lubang A, dan membentuk sudut 510 terhadap lantai. Jika pancaran air sampai di B (1 meter), maka tinggi (h) air dalam tangki adalah...
Soal diselesaikan dengan dua buah persamaan :
1. Gerak parabola, yaitu air memancar sehingga menenmpuh jarak mendatar maksimal Xmaks = 1 meter.
Xm = (vo2.sin2α)/g
1 = (vo2.sin102)/10 maka dapat anda hitung vo2 = 10/sin 102
2. Dengan data vo pada jawaban di atas gunakan hukum kekekalan energi mekanik
Ek air = Ep air
1/2 mvo2 = mgh (m dapat dicoret)
h = (10/sin 102)/(2.10) = ......
