SUN

The sun is the center of the solar system. The sun is the largest object in solar system. It is diameter ia approximately 1,4 million kilometer it consists of hydrogent and helium. The sun is 333.000 times as massive as t

workshop

physics lessons for elementary schools, middle schools, high schools

Global Warming

Some plants are often grown in a glasshouse (greenhouse)What is advantage of a greehouse ?

extreme weather in Indonesia

frequent extreme weather in Indonesia, according to climatology meteorology and geophysics, extreme weather

greetings in Happy New Year 2012

Fisika Education : Teaching materials, practice questions and articles Physics for elementary, junior high school, vocational school

Tuesday, February 28, 2012

Extreme weather alert

Iggy tropical cyclones formed in the Indian Ocean on Thursday (1/26/2012) at 07.00 pm. Location of its formation 1080 kilometers southwest of Denpasar. Three days into the future, the tropical cyclone is expected to grow and potentially cause an impact of extreme weather in Indonesia.

"Today, the extreme weather that occurs in the form of high winds with little rain, except in areas of West Nusa Tenggara and East Nusa Tenggara. Apart from tropical cyclones Iggy, there is still a low pressure center in the northern waters of Australia," said the head of the Tropical Cyclone Subfields Meteorology, Climatology, and Geophysics (BMKG) Fachri Radjab yesterday.

According to him, a low pressure center in the northern waters of Australia is expected to make landfall today and decays. Iggy cyclones moving to the southeast could be stronger.

Wave height

Appropriate agencies in Perth, Australia, said on Thursday Iggy cyclone has maximum winds of 75 kilometers per hour. On Friday is expected to increase to 100 kilometers per hour. The next day, Saturday, an estimated 140 kilometers per hour.

The Sunday estimated 165 kilometers per hour. The rest can not be predicted.

According to the Head of the Public Meteorological Information BMKG Mulyono Prabowo, wind speed caused by the intensity of the cyclone will affect the height of sea waves. BMKG issued a cyclone warning Iggy impact of sea wave height 4-6 meters in the Indian Ocean in southern Lampung to NTT.

Also predicted that high waves hit the Timor Sea, Sea Island, Sea of ​​Sumbawa, Arafuru Sea and South China Sea. Wind speeds above 36 kilometers per hour are estimated to occur in southern Sumatra, Java, Bali, and Nusa Tenggara region. Strong winds also swept the region in the Java Sea waters.

According Fachri, the length of the cyclone Iggy can not be predicted whether it will stand up to the peak tides in the waters north of Jakarta and its surroundings, 2-6 February 2012. "Although it does not coincide with the tides, cyclone effects of flooding should still watch out," said Fachri. (NAW)
phenomenon

Friday, February 17, 2012

claim code blog on technorati

how to claim blog code on technorati

about social networking technorati technorati very famous and I went to register at technorati, here's how to register on technorati:

1. http://technorati.com
2. click join
3. input your personal data and complete end to select the I agree to abide by Technorati's Privacy Policy and Terms of Use and click join
4. for example the picture below join technorati
5. Activate your account One last step! We sent you an email with an activation link. Please click the link in that email to activate your account. Please use the link sent to you via email, including the activation key. Already a verified member? Sign in!
6. check your email, the email inbox of the technorati will find it like this Hello,! You're almost ready to start using Technorati! To verify your email address and get started, please go to: http://technorati.com/account/activate/your id xxxxxxxxxx
If the above link is not clickable, please copy and paste the link into your web browser. Please do not reply to this email. If you require further help please visit our support forum at http://support.technorati.com/support/troubleshooting Thank you for using Technorati!
7. use clicking the link will take you to the technorati. for active accounts
8. input your username and password in the menu Member Login
9. continued claim blog ? for example the picture below
10. go to your profile continue to fill your blog url in the menu Start a blog claim:
11. fill in the details of your blog web
Claiming your blog on Technorati has just been made easier. First, provide Technorati with the following information, then you'll be given a "claim code" on the next page which you will add to a blog post on your blog. This will prove to technorati you are a writer for your blog. Then Technorati will review the information you submitted and will complete the claim. You will be able to check on the status of your claim on your Technorati profile page.
12. The next claim code will be sent to your email example :
Thank you for submitting your blog claim on Technorati. Technorati will need to verify that you are an author of the site http://tujeng.blogspot.com by looking for a unique code. We have just assigned the claim token PDDD4N8ZUFV4 to this claim. Please visit http://technorati.com/account/ for more details, including how to use the claim token.
The next step after getting the claim token code like the code PDDD4N8ZUFV4 claim token and create a new posting on the weblog content with friends and claim that had a unique code, a unique verification code (claim token) is intended to make sure that the weblog technorati parties who have registered to technorati Shabat's is correct. Technorati search the posts by RSS FEED friend (bait) of the weblog friend. Remember not to claim the code as code of claim token token PDDD4N8ZUFV4 not listed in your blog post.
Thank you. good luck :)

Thursday, February 16, 2012

TRIK CEPAT MENGERJAKAN SOAL

TRIK CEPAT MENGERJAKAN SOAL TUMBUKAN LENTING

Ketika Ulangan atau Ujian di sekolah, baik Ujian Sekolah (US) atau Ujian Negara (UN) maupun Ujian Masuk Perguruan Tinggi sekalipun, sering kali kita dihadapkan pada waktu yang kurang cukup dan merasa terburu-buru dalam mengerjakan soal, sementara rumus-rumus fisikanya saja masih diingat-ingat, tau-tau pengawas sudah meminta lembar jawab segera dikumpul, waadduu…uuuhhh…gauuwwwaaaattt dweeehh…!
Tenang, mari kita tanggulangi hal-hal tersebut diatas ! Kali ini akan akyuh carikan solusinya, khusunya untuk mengerjakan soa-soal tumbukan lenting, ada trik-trik cepat untuk mengerjakannya. Tapi ingat, tidak semua soal-soal tumbukan lenting bisa deikerjakan dengan trik ini.
Dalam mengerjakan soal-soal tumbukan lenting pasti selalu melibatkan rumus Hukum Kekekalan Momentum dan rumus persamaan koefisien restitusi.

selengkap nya di sini

TRIK CEPAT MENGERJAKAN SOAL TUMBUKAN LENTING

SOAL-SOAL UN IPA SMP

 UN IPA SMP

5. Berat sebuah benda di kutub lebih besar daripada di khatulistiwa sebab lebih dekat ke .......
A. magnet bumi
B. poros bumi
C. pusat bumi
D. magma bumi


Jawaban : C
SMP/Ebtanas/Ilmu Pengetahuan Alam/Tahun 1990
Penyelesaian :
Berat suatu benda didefinisikan sebagai gaya yang bekerja pada benda itu karena tarikan bumi. Makin dekat dengan pusat makin besar tarikan itu, dirasakan, jaraknya makin jauh dari pusat bumi makin kecil tarikan itu. Bumi kita tidaklah bulat sempurna tetapi pada kutub-kutubnya agak pepat sehingga permukaannya dekat dengan pusat bumi, sedangkan khatulistiwa menggelembung sehingga permukaannya jauh dari pusat bumi.

6.Bila keempat pasak di bawah ini masing-masing dipukul dengan gaya yang sama, maka yang menancap paling dalam pada tanah adalah .......

A. A
B. B
C. C
D. D


Jawaban : C
SMP/Ebtanas/Ilmu Pengetahuan Alam/Tahun 1991
Penyelesaian :

Semakin kecil A ( tuas penampang ) semakin besar tekanannya. Sehingga semakin dalam menancapnya pada tanah.

selamar belajar semoga bermanfaat . Download

Wednesday, February 15, 2012

Latihan UN IPA SMP

berikut adalah contoh Latihan Ujuan  Nasional IPA untuk kelas SMP , beserta Kunci jawaban nya

1.
Tentukan rumus resultan gaya-gaya yang bekerja pada benda .......
A. F1 - F2 - F3
B. F1 - F2 + F3
C. F1 + F3 - F2
D. F1 + F2 - F3


Jawaban : D
SMP/Ebtanas/Ilmu Pengetahuan Alam/Tahun 1988
Penyelesaian :
Tentukan rumus resultan gaya-gaya yang bekerja pada benda :

R = F1 + F2 - F3

2. Ikan yang hidup di laut yang dalam, bentuk badannya ramping dan dapat bergerak dengan cepat. Peristiwa ini adalah akibat .......
A. gaya tekan air terhadap badan ikan kecil
B. tekanan air terhadap ikan besar
C. ikan beradaptasi terhadap lingkungan laut
D. ikan memiliki sisi untuk mengurangi tekanan air

Jawaban : C
SMP/Ebtanas/Ilmu Pengetahuan Alam/Tahun 1989
Penyelesaian :
Ikan yang hidup di laut yang dalam bentuk badannya ramping dan dapat bergerak dengan cepat. Peristiwa ini adalah akibat adaptasi ikan terhadap lingkungan laut.

3. Sebatang besi lunak sukar dijadikan magnet tetap, karena ......
A. besi lunak tidak mempunyai magnet-magnet elementer
B. magnet-magnet elementer pada besi lunak tidak bisa diatur
C. besi lunak sukar ditembus garis-garis gaya magnet
D. magnet-magnet elementer pada besi lunak mudah teratur tetapi cepat tidak teratur

Jawaban : D
SMP/Ebtanas/Ilmu Pengetahuan Alam/Tahun 1989
Penyelesaian :
Besi lunak sukar dijadikan magnet tetap karena magnet-magnet elementer dalam besi mudah berputar.
Jadi mudah teratur dan mudah juga cepat tidak teratur.

4. Sebuah batu massanya 900 N diangkat dengan sebuah tuas. Bila lengan beban 50 cm dan lengan kuasanya 1,50 m, maka gaya yang diperlukan pada kuasa sekurang-kurangnya .......
A. 300 N
B. 400 N
C. 450 N
D. 550 N


Jawaban : A
SMP/Ebtanas/Ilmu Pengetahuan Alam/Tahun 1989
Penyelesaian :
Diketahui : MB = 900 N
Lb = 50 cm
Lk = 150 cm
Ditanya : Mk ...... ?
Jawab : Mb . LB = Mk . Lk

selamat belajar semoga bermanfaat Download

Sunday, February 5, 2012

how to read minds

progress continues to rise, many desires and fantasies are realized with the development of technology

Scientists from the United States has developed a way to read people's minds. Going forward, the ability to read minds might not be so special.

What do scientists actually is to reconstruct the words by waves in the brain of a patient who is thinking about the words in question.

To do this, scientists used a technique that relies on the collection of electrical signals directly from the patient's brain. Based on these signals, scientists use computer models to reconstruct the words that are being considered by the patient.

Studies conducted by mengimplantasi electrodes in the brains of patients. Patients were asked to listen to the conversation, while the scientists analyzed the frequency of the sound to determine what patients think.

"We focus on how the brain processes speech," said Brian Pasley, researchers from the Helen Wills Neuroscience Institute at the University of California, Berkeley, California.

"Most of the information in a conversation between 1-8000 Hertz frequency. In essence, the brain to process sounds with different frequencies in different brain locations," said Pasley.

By detecting how and where the brain "put: noise in the temporal lobe (part of the brain in charge of the hearing), scientists can know the word is heard.

"When certain brain areas are activated, we know it is associated with the sounds of certain frequencies are heard," said Pasley told AFP on Wednesday (02/01/2012). "So we can use mapping and brain activity to a certain frequency sound meresintesis we're guessing," said Pasley.

Which is then mapped the structure of the scientist. The sound of "S" is a high frequency appear in certain areas of the brain. While the sound "U" appears in other parts of the brain.

To conduct this study, scientists asked 15 patients undergoing surgical tumor and epilepsy to become a volunteer.

The study itself for the first time in humans. Previously, the study has been done on the mongoose to see the voice that is heard by the animal.

Research will be continued to determine whether the process of listening to the words with the imagined voice or words.

Information obtained in this study and the follow-up can be very useful to know what he was thinking of people who have difficulty speaking.

Mindy McCumber of Florida Hospital in Orlando, as quoted by the BBC on Wednesday, saying, "As a therapist, I could see the potential implications for the restoration of communication for a variety of diseases."

"It's a big impact for patients who have spoken in the mechanism of biological damage due to stroke, Lou Gehrig's disease and unable to speak," added Robert Knight, professor of psychology and neuroscience from the University of California Berkeley.

The results of this study was published in the journal PLoS Biology in January 2012.
Lab

Thursday, February 2, 2012

pyramids are found on Mount Garut

is touted as the pyramids are found on Mount Garut Sadahurip later in the spotlight. It is said that the age pyramid is older than the Pyramids of Giza. Really?

Oxford University professor, Stephen Oppenheimer, had been asked to comment about the discovery of the pyramid after meeting with President Susilo Bambang Yudhoyono on Thursday (02/02/2012). Oppenheimer is also the author of best-selling book Eden in the East, said, "I have not seen the pyramid. I can not comment."

Oppenheimer said that Indonesia could have been a part of Atlantis, lost continent that once described by Plato. However, the discovery of the Pyramid Garut can not necessarily be evidence of Atlantis that has also been described in the book Arysio Santos.

"So far, about the pyramids and ancient monuments, I'm not sure there is solid evidence. I do not say no. I can not agree with what I do not see," said Oppenheimer.

Oppenheimer said in an interview, a necessary condition for a civilization to be able to build the pyramids of ancient buildings such as the availability of food resources. "You need a lot of farmers to feed the people in the city to build a great monument. Basis of civilization in the fields," said Oppenheimer.

Until now, not yet known whether any civilization in Indonesia whose age exceeds the Ancient Egyptian civilization capable of building a historic landmark.
Eden in the East, written Oppenheimer was not talking about ancient monuments, but rather on the roots of domestication and civilization.

arkeologi

Related Posts Plugin for WordPress, Blogger...