• Daftar Pertanyaan yang telah dijawab


 
10246 Data founds

1. Pada saat membaca, jarak terdekat yg dpt dilihat seprang kakek penderita rabun dekat adalah 5 cm, tentukan kekuatan lensa kacamata yg digunakan

2. Objektif sebuah mikroskop berupa lensa cembung dgn jarak fokus f. Benda yg diteliti dgn mikroskop itu harus ditempatkan di bawah objektif pada jarak ......

3. Pada suhu 43° C volume gas oksigen dalam tangki adalah 25 liter. Bila suhu dinaikkan sampai 27° C, volume oksigen dalam tangki adalah ..... liter

4. Sebuah wadah, 85% dari kapasitasnya diisi dgn cairan. Suhu wadah dan cairan 0° C. Wadah terbuat dari bahan dgn koef muai volume = 75 x 10-9 /°C. Saat diamati pada suhu 300° diamati cairan mulai meluber dari wadah, tentukan koefisien muai volume dari cairan tsb

 

  1. Coba cek kembali soal ananda. mungkin yang dimaksud bukan 5 cm tetapi PP = 50 cm. Silahkan gunakan persamaan kekuatan lensa bagi penderita hipermetropi     P = 4 - (1/PP)
  2. Lensa obyektif harus menghasilkan bayangan yang bersifat nyata dan terbalik   (R. III) sehingga benda harus ditempatkan di R. II yaitu di antara F dan 2F
  3. Gunakan persamaan isobarik (V1/V2) = (T1/T2) dengan ketentuan T dalam Kelvin
  4. Diketahui Vo wadah = V, Vo cairan = 0,85V. Saat cairan akan meluber ini menunjukkan Vt wadah = Vt cairan. Coba kamu lanjutkan dengan rumus pemuaian Vt = Vo (1 + γ.Δt)

Pelajaran Fisika (SMA) Kelas 10
05-04-2012 Yasin
08-10-2012 Winarso, S.Pd

saya ingin bertanya bagaimana cara kita mendapatkan kata kerja atau verb dalam paragraf narative .. Once upon a time, there was once a guy who was very much in love with this girl. This romantic guy folded 1,000 pieces of papercranes as a gift to his girl. Although, at that time he was just a small executive in his company, his future doesn\'t seem too bright, they were very happy together. Until one day, his girl told him she was going to Paris and will never come back.She also told him that she cannot visualize any future for the both of them, so let\'s go their own ways there and then... heartbroken, the guy agreed. When he regained his confidence, he worked hard day and night, just to make something out of himself. Finally with all these hard work and with the help of friends, this guy had set up his own company... \"You never fail until you stop trying.\" he always told himself. \"I must make it in life!\" One rainy day, while this guy was driving, he saw an elderly couple sharing an umbrella in the rain walking to some destination. Even with the umbrella, they were still drenched. It didn\'t take him long to realize those were his ex-girlfriend\'s parents. With a heart in getting back at them, he drove slowly beside the couple, wanting them to spot him in his luxury saloon. He wanted them to know that he wasn\'t the same anymore, he had his own company, car, condo, etc. He had made it in life! Before the guy can realize, the couple was walking towards a cemetery, and he got out of his car and followed them...and he saw his exgirlfriend, a photograph of her smiling sweetly as ever at him from her tombstone... and he saw his precious papercranes in a bottle placed beside her tomb. Her parents saw him.He walked over and asked them why this had happened. They explained that she did not leave for France at all. She was stricken ill with cancer. In her heart, she had believed that he will make it someday, but she did not want her illness to be his obstacle ... therefore she had chosen to leave him. She had wanted her parents to put his papercranes beside her, because, if the day comes when fate brings him to her again he can take some of those back with him. The guy just wept

Once upon a time, there was once a guy who was very much in love with this girl. This romantic guy folded 1,000 pieces of papercranes as a gift to his girl. Although, at that time he was just a small executive in his company, his future doesn\'t seem too bright, they were very happy together. Until one day, his girl told him she was going to Paris and will never come back.She also told him that she cannot visualize any future for the both of them, so let\'s go their own ways there and then... heartbroken, the guy agreed. When he regained his confidence, he worked hard day and night, just to make something out of himself. Finally with all these hard work and with the help of friends, this guy had set up his own company... \"You never fail until you stop trying.\" he always told himself. \"I must make it in life!\" One rainy day, while this guy was driving, he saw an elderly couple sharing an umbrella in the rain walking to some destination. Even with the umbrella, they were still drenched. It didn\'t take him long to realize those were his ex-girlfriend\'s parents. With a heart in getting back at them, he drove slowly beside the couple, wanting them to spot him in his luxury saloon. He wanted them to know that he wasn\'t the same anymore, he had his own company, car, condo, etc. He had made it in life! Before the guy can realize, the couple was walking towards a cemetery, and he got out of his car and followed them...and he saw his exgirlfriend, a photograph of her smiling sweetly as ever at him from her tombstone... and he saw his precious papercranes in a bottle placed beside her tomb. Her parents saw him.He walked over and asked them why this had happened. They explained that she did not leave for France at all. She was stricken ill with cancer. In her heart, she had believed that he will make it someday, but she did not want her illness to be his obstacle ... therefore she had chosen to leave him. She had wanted her parents to put his papercranes beside her, because, if the day comes when fate brings him to her again he can take some of those back with him. The guy just wept

Pelajaran Bahasa Inggris Kelas 10
13-06-2012 tika
05-07-2012 Tri Raharjo, S.Pd

permisi...

bisa kasih soal dan pembahasan expressing happiness?

tolong secepatnya dikirim

Text 1
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.

source my star . com


Pelajaran Bahasa Inggris Kelas 10
06-04-2012 ahmad faiz
06-06-2012 Tri Raharjo, S.Pd

pesawat T.V menyerap tegangan listrik 80 V dan memakai arus 1 A ,Tiap hari rata rata bekerja selama 3 jam .biaya listrik tiap 1 Kwh ialah Rp 150,00 .maka biaya yang diperlukan tiap bulan (1 bulan=30 hari) ialah??

 

 tolong dijwab dengan detail

Hitung dulu energi listrik yang dipakai setiap hari :  W = V.i.t = 80x1x3 = 240 Wh.

Dalam 1 bulan W = 240 x 30 =  720 Wh = 0,72 kWH

Biaya = 0,72 kWh x Rp. 150 =  Rp. 108,-


Pelajaran Fisika (SMA) Kelas 10
20-05-2012 Farah
28-05-2012 Winarso, S.Pd

A dan B berturut-turut bermassa 3 kg dan 4 kg, di atas lantai kasar dengan koefisien gesek 2/7 bergerak saling mendekati  sehingga terjadi tumbukan yang ketidaklentingannya sempurna . pada saat awal tumbukan, A berkelajuan 12 m/s dan B 2 m/s . setelah akhir tumbukan hingga berhenti, A dan B menempuh jarak....

Selesaikan dulu proses tumbukan tidak lenting sama sekali (ketidaklentingannya sempurna)

mA.vA + mB.vB = (mA+ mB) v'

3.12 + 4.(-2) = 7.v'              v' = 4 m/s

Karena lantai kasar maka benda A dan B akan mengalami perlambatan sebesar

a= f/m = μmg/m =  μg = 2/7 x 10 =20/7

Kemudian  gunakan persamaan GLBB,

vt2 = vo2 - 2as

0 = 42 - (2x(20/7)xs)   s = 112/40 = 2,8 meter


Pelajaran Fisika (SMA) Kelas 11
20-05-2012 prima
28-05-2012 Winarso, S.Pd

suatu trafo step down GGL primernya Ep=200 V dan sekundernya Es=110 V.rangkaian sekunder ditutup dengan lampu yang spesifiknya 220 V dan 60 W.Efesiensi trafo 75%.maka besar arus primernya ialah ?

 

Dari data lampu 220V/60 watt dihubungan pada tegangan 110 V, maka daya lampu sebenarnya adalah 15 W (tegangan turun 1/2 nya daya turun menjadi 1/4 nya)

Rumus daya P = I.V, maka Is = 15/110

Rumus  efisiensi trafo :

75% = [(Vs.Is)/(Vp.Ip)]  x 100%

3/4 = [110 x (15/110)] / (200 xIp)    diperoleh Ip = 0,1 A


Pelajaran Fisika (SMA) Kelas 10
20-05-2012 farah
28-05-2012 Winarso, S.Pd

Sebuah pemanas lidtrik yang hambatanya 5Ω menggunakan sumber tegangan 50v.Pemanas digunakan untuk memanaskan 1 liter air dari 0°c hinga 50°c.Jika 70% kalor yang dihasilkan pemanas diambil oleh air,maka waktu yang diperlukan adalah
a.5 menit
b.10 menit
c.15 menit
d.20 menit
e.25 menit

1 L air = 1 kg

Kesetaraan energi listrik dengan energi kalor

W = Q

(V2.R/t) = m.c.Δt   karena kalor yang dihasilkan pemanas 70% diambil air, maka

0,7x (V2.R/t) = m.c.Δt

0,7x(502.5/t) = 1.4200.(50-0)   ingat kalor jenis air 1 kkal/kg0C = 4200 J/kgoC

t = ..... sekon (silahkan  dihitung sendiri dan konversikan ke menit)


Pelajaran Fisika (SMA) Kelas 10
11-05-2012 Heru
28-05-2012 Winarso, S.Pd

ass..

1. sebuah bongkahan es dengan massa jenis 0,9 g/cm3 dicelupkan dalam gelas berisi air (Ρair = 1 g/cm3). volume bongkahan es yg muncul dari permukaan air ?
a. 0,05 bagian b. 0,10 bagian

c. 0,15 bagian d. 0,20 bagian e. 0,25 bagian

 

tolong di buat penyelesaian/caranya pak ..
terimakasih
wassalam. 

Gunakan saja pemahaman perbandingan massa jenis benda dengan massa jenis cairan adalah prosentase volume benda yang tenggelam.

Jadi es yang tenggelam adalah 0,9/1 = 0,9 bagian, maka bongkahan es yang muncul

1 bagian - 0,9 bagian = 0,1 bagian (B)


Pelajaran Fisika (SMA) Kelas 11
09-05-2012 ina
28-05-2012 Winarso, S.Pd

lensa divergen dengan panjang fokus 4 cm diletakkan 14 cm dibelakang lensa konvergen dengan panjang fokus 20 cm. benda yang berjarak tak hingga difokuskan bersifat...dengan jarak bayangan...

Mohon soal dicek kembali, maksud dari benda yang berjarak tak hingga difokuskan

Pelajaran Fisika (SMA) Kelas 8
03-05-2012 sutini
28-05-2012 Winarso, S.Pd

Dapatkah suatu getaran terjadi tanpa adanya amplitudo??Alasannya?

 Sebelumnya terimakasih pak. 

Ciri getaran adalah posisi benda berubah-ubah terhadap titik seimbang. Posisi benda diukur dari titik seimbang disebut simpangan. Simpangan maksimum benda disebut AMPLITUDO. Kesimpulannya benda yang bergetar akan menyimpang secara bervariasi dan pasti ada simpangan yang maksimum.

Pelajaran Fisika (SMA) Kelas 8
02-05-2012 Restu
28-05-2012 Winarso, S.Pd