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21 September 2011
Hary Suprihatin
IPA Kelas 11

Pak/Bu, mau tanya. Apa pengaruh HCl terhadap tulang(cakar ayam)?? Mohon jelaskan!!

dan mengapa kalau tulang direndam dlm larutan HCl menjadi lentur?? Terima KAsih....... 

HCl berpengaruh terhadap tulang (bukan hanya cakar ayam). Bila tulang direndam dalam HCl akan terjadi reaksi antara asam klorida (HCl) dengan zat kapur yang terkandung dalam tulang sehingga tulang akan menjadi lentur/elastis karena kehilangan sebagian zat kapur yang menyebabkan tulang menjadi keras. Bila perendaman dilanjutkan, maka tulang akan hancur. Hal demikian menjadi alasan mengapa ketika kita memakan tulang (termasuk duri dari ikan asin) akan hancur oleh asam klorida yang terdapat dalam lambung.
HERMAN MURSITO 21 September 2011 0:0


20 September 2011
Rooshardini
Fisika (SMP) Kelas 12

Mengapa baju yang baru dijemur kemudian kita pakai terasa melekat di badan ?

mohon Jawaban  

Baju yang dijemur kemudian kering karena terkena panas matahari menjadikan baju bermuatan listrik (+). Saat dipakai maka baju yang bermuatan (+) tersebut akan berinteraksi dengan tubuh yang terhubung dengan tanah (tubuh menjadi bermuatan negatif). Anda pasti tahu, muatan (+) akan tarik menarik dengan muatan (-).
Winarso, S.Pd 21 September 2011 0:0


20 September 2011
bon
IPA Kelas 9

 Apa pengertian trachoom

 

Trachoom adalah penyakit pada mata yang disebabkan oleh virus sehingga mudah menular ke orang lain, misalnya belek.
HERMAN MURSITO 21 September 2011 0:0


20 September 2011
shasya anita
Fisika (SMP) Kelas 9

ibu guru juga pak guru tolong bantu saya mengerjakan soal ini ya!

berikut ini soalnya

- pada sebuah penghantar mengalir arus listrik 250 m. Jika muatan yang mengalir  5000  C membutuhkan waktu selama .....

ibu/pak tolong juga kirimkan contoh soal & pembahasan tentang listrik dinamis.

trimakasih banyak atas bantuannya

 

Untuk menyelesaikan soal di atas, gunakan saja persamaan Coulomb :

Q = i.t, sehingga t = Q/i =5000/250.10-3 = 2.104 sekon


Winarso, S.Pd 21 September 2011 0:0

20 September 2011
pungky riyansari
Bahasa Inggris Kelas 11

tolong buatkan saya kesimpulan tentang direct speech ,,

saya butuh sekarang karena besok sudah dikumpulkan ,,

terima kasih ,, 

Direct and Indirect Speech

When using indirect or reported speech, the form changes. Usually indirect speech is introduced by the verb said, as in I said, Bill said, or they said. Using the verb say in this tense, indicates that something was said in the past. In these cases, the main verb in the reported sentence is put in the past. If the main verb is already in a past tense, then the tense changes to another past tense; it can almost be seen as moving even further into the past.

Verb tense changes also characterize other situations using indirect speech. Note the changes shown in the chart and see the table below for examples. With indirect speech, the use of that is optional.

 

Direct Speech

Þ

Indirect Speech

simple present
He said, “I go to school every day.”

Þ

simple past
He said (that) he went to school every day.

simple past
He said, “I went to school every day.”

Þ

past perfect
He said (that) he had gone to school every day.

present perfect
He said, “I have gone to school every day.”

Þ

past perfect
He said (that) he had gone to school every day.

present progressive
He said, “I am going to school every day.”

Þ

past progressive
He said (that) he was going to school every day.

past progressive
He said, “I was going to school every day.”

Þ

perfect progressive
He said (that) he had been going to school every day,

future (will)
He said, “I will go to school every day.”

Þ

would + verb name
He said (that) he would go to school every day.

future (going to)
He said, “I am going to school every day.”

Þ

present progressive
He said (that) he is going to school every day.

 

past progressive
He said (that) he was going to school every day

Direct Speech

Þ

Indirect Speech

auxiliary + verb name
He said, “Do you go to school every day?”
He said, “Where do you go to school?”

Þ

simple past
He asked me if I went to school every day.*
He asked me where I went to school.

imperative
He said, “Go to school every day.”

Þ

infinitive
He said to go to school every day.

 

*Note than when a Yes/No question is being asked in direct speech, then a construction with if or whether is used. If a WH question is being asked, then use the WH to introduce the clause. Also note that with indirect speech, these are examples of embedded questions.

The situation changes if instead of the common said another part of the very to say is used. In that case the verb tenses usually remain the same. Some examples of this situation are given below.

 

Direct Speech

Þ

Indirect Speech

simple present + simple present
He says, “I go to school every day.”

Þ

simple present + simple present
He says (that) he goes to school every day.

present perfect + simple present
He has said, “I go to school every day.”

Þ

present perfect + simple present
He has said (that) he goes to school every day.

past progressive + simple past
He was saying, “I went to school every day.”

Þ

past progressive + simple past
He was saying (that) he went to school every day.

 

past progressive + past perfect
He was saying (that) he had gone to school every day.

future + simple present
He will say, “I go to school every day.”

Þ

future + simple present
He will say (that) he goes to school every day.

 

Another situation is the one in which modal constructions are used. If the verb said is used, then the form of the modal, or another modal that has a past meaning is used.

 

Direct Speech

Þ

Indirect Speech

can
He said, “I can go to school every day.”

Þ

could
He said (that) he could go to school every day.

may
He said, “I may go to school every day.”

Þ

might
He said (that) he might go to school every day.

might
He said, “I might go to school every day.”

 

 

must
He said, “I must go to school every day.”

Þ

had to
He said (that) he had to go to school every day.

have to
He said, “I have to go to school every day.”

 

 

should
He said, “I should go to school every day.”

Þ

should
He said (that) he should go to school every day.

ought to
He said, “I ought to go to school every day.”

Þ

ought to
He said (that) he ought to go to school every day.

 

While not all of the possibilities have been listed here, there are enough to provide examples of the main rules governing the use of indirect or reported speech. For other situations, try to extrapolate from the examples here, or better still, refer to a good grammar text or reference book.

Some other verbs that can be used to introduce direct speech are: ask, report, tell, announce, suggest, and inquire. They are not used interchangeably; check a grammar or usage book for further information.

 


Tri Raharjo, S.Pd 21 September 2011 0:0

20 September 2011
Ridho
Fisika (SMP) Kelas 10

Pak...Ini pertanyaan saya...

Posisi suatu partikel yg bergerak sepanjang garis lurus dinyatakan dlm persamaan x = 2t2, dgn x dalam m dan t dalam s serta 2 dalam m/s2. Berapakah kecepatan sesaat pada waktu t = 2 s?

 

Terima kasih sebelum dan sesudahnya atas jawaban dari Bapak...

Mas Ridho, untuk bahwa untuk menyatakan kecepatan berdasarkan persamaan posisi, maka persamaan posisi tersebut harus diturunkan/diferensial (konsultasikan kepada guru matematika kamu).

x = 2t2,

v = 4t, maka v saat t =2 adalah

v = 4.2 = 8 m/s


Winarso, S.Pd 21 September 2011 0:0

19 September 2011
Dinna
Bahasa Inggris Kelas 12

My regard,

I need some explaining about essay text. Is it same with other text (exposition, hortatory, etc)?

I studied about its outline and wondering more about assay. If you don't mind, please, explain me the definition, characterictics and the simple example.

Thank you very much for answering me. It means a lot :)

Dear students…..

Bingung cara membedakan teks analytical exposition dan hortatory exposition? Don’t worry it’s so easy. Study the followings ya…

Sebelum kita mengetahui perbedaan teks analytical dan hortatory, mari kita mengenal persamaan dari kedua teks ini. Teks exposition dibagi menjadi dua bagian yaitu analytical exposition dan hortatory exposition. Exposition adalah jenis teks yang berisi tentang argumen-argumen tentang suatu topik. Dalam menulis teks ini, penulis perlu mencari sumber informasi agar argumen yang dikemukakan cukup kuat untuk mempengaruhi pembaca atau pendengar.
Dalam kehidupan sehari-hari kita bisa menemukan teks exposition dalam diskusi, pidato, iklan, surat, dsb. Contohnya, ada seorang teman yang merokok, kita bisa saja memberikan pendapat kita bahwa merokok itu tidak baik. So the thesis is “Smoking is not good for your health”. Kemudian kita akan memberikan alasan-alasan mengapa merokok itu tidak baik, so we tell the arguments that support our thesis. The social function of exposition is to persuade the reader or listener.

So the difference is…..
Study the text organization of analytical exposition below.
Ada 3 tahapan dalam teks analytical, yaitu:

1.        Thesis, berisi tentang suatu pernyataan tentang permasalahan tertentu. Biasanya diawali dengan kalimat I personally think, In my opinion, I believe, dll.

2.        Arguments, berisi tentang alasan-alasan untuk medukung Thesis yang dikemukakan. Diawali dengan kata, atau f rase First, Second, Furthermore, In addition, The last, dll.

3.        Reiteration, berisi tentang simpulan dari Thesis, dan Arguments yang dikemukakan. Kata-kata yang digunakan biasanya In my conclusion, Based on the arguments above, dll

Perbedaan Analytical Exposition dan Hortatory Exposition terletak di paragraf terakhir. Dalam penulisan Hortatory juga ada 3 bagian, yaitu:

1.        Thesis, berisi tentang suatu pernyataan tentang permasalahan tertentu. Biasanya diawali dengan kalimat I personally think, In my opinion, I believe, dll.

2.        Arguments, berisi tentang alasan-alasan untuk medukung Thesis yang dikemukakan. Diawali dengan kata, atau f rase First, Second, Furthermore, In addition, The last, dll.

3.        Recommendation, berisi tentang saran dari penulis atas Thesis dan Arguments yang dikemukakan. Biasanya ada kata-kata should, should not, ought to, ought not to, dll.

For example:

Text 1
Smoking in restaurants

Smoking in restaurants is just not on. It must not be allowed because it is rude, harmful to others and dangerous for the smokers.
Firstly, smoking in a restaurant is impolite. The smell of the smoke affects all people and can turn them off their food. People pay to taste good food and not to be put off by foul smelling smoke.
Another reason smoking should not be allowed in restaurant is the harm it can do to others. Passive smoking that is breathing in smoke made by a smoker can lead to asthma attacks and even cancer.
Finally, smoking is dangerous and a health risk to the smokers. Cigarettes cause heart and lung disease and people should not smoke anywhere, not just in restaurants.
Therefore, smoking in restaurants is impolite, harmful to others and a health risk to the smokers and should not be allowed in any restaurants.

Text 2
Is it important to know what your kids are watching? Of course yes. Television can expose things you have tried to protect them from, especially violence, pornography, consumerism, etc.
A study demonstrated that spending too much time on watching TV during the day or bedtime often causes bedtime disruption, stress, and short of sleep duration.
Another research found that there is a significant relationship between the amount of time spent for watching television during adolescence and early adulthood, and the possibility of being aggressive.
Meanwhile, many studies have identified a relationship between kids who watch TV a lot and being inactive and overweight.
Considering some facts mentioned above, protect your children with the following tips:
1. Limit television viewing to 1 – 2 hours each day
2. Do not allow your children to have a TV set in their bedrooms
3. Review the rating of TV shows that your children watch
4. Watch television with your children and discuss what is happening the show

Kedua teks di atas hampir sama, perbedaannya hanya ada di paragraf terakhir. Coba perhatikan paragraf terakhir pada teks 1 yang hanya berisi simpulan tidak ada saran. Memang ada kata “shouldn’t be allowed in the restaurants”, namun itu bukan saran melainkan penguatan dari thesis. Perhatikan lagi thesisnya “It must be allowed because…” Bandingkan dengan paragraf terakhir pada teks kedua yang berisi saran melalui empat tips yang harus dilakukan to protect the children. Clear right?

 source :my star.com


Tri Raharjo, S.Pd 21 September 2011 0:0

18 September 2011
Edwin
Bahasa Inggris Kelas 9

Assalamuallaikum wr.wb

salam kenal buat semuanya . . .

Saya mohon penjelasan mengenai fungsi, bagaimana penggunaannya di dalam kalimat, beserta contoh, dari expresi berikut :

1. Meminta pengulangan, di dalam beg your pardon

2. Cara menunjukkan perhatian,

3. Cara menyatakan kekaguman.

Tolong juga jelaskan bagaimana contoh merespons ungkapan meminta pengulangan, menunjukkan perhatian, dan menyatakan kekaguman tersebut.

Atas perhatiannya saya ucapkan terima kasih.

Wassalam

Terimakasih atas pertanyaan Edwin.

 

1. Expressed repetition

Doni : Hi Tom, long time no see. Where have you been?

Tomy: Yea, I've just returned from my hometown.

Doni : Oh really? How long?

Tomy: Yes, it was for a week. And you know what, I met Luna Maya there.

Doni: I beg your pardon me, what did you say?

Tomy: I said  I met Luna Maya there.

Doni  : Wouw..that's wonderfu!! 

Kalimat yang digaris bawah menunjukkan ungkapan meminta pengulangan. Maka respon yang diharapkan adalah mengulang informasi seperti sebelumnya.

Contoh percakapan lain sebagai berikut ini:

            Fina      : Turn on the channel 7.

Dude    : Pardon?

Fina      : Mount Merapi erupted again yesterday evening! Watch the news on television?

Dude    : What did you say? I can’t hear your voice!

Fina      : It’s better not to turn your radio out loud.

Dude    : Sorry. You said about Mount Merapi.

Fina      : Yes. Let’s listen to the news about its eruption.

Dude    : Oh God!

 

Ungkapan yang dicetak tebal mengungkapkan permintaan pengulangan / repetition.

 

2.Expressing concern

Sita      : Oh my God, I made some mistakes in doing the test. I’m afraid I’ll get bad score in math.

Nia       : Don’t worry mate, you’ll be successful. You’ve tried your best, haven’t you?

Sita      : Hopefully. Thanks for your support.          

 

Ungkapan yang digaris bawah menunjukkan perhatian pada Sita. Biasanya ungkapan semacam ini untuk menunjukkan rasa empati, solidaritas, pengertian pada lawan bicara.

 

3.Expressing admiration

 

Drian    : New hair style, huh?

Pungki  : Yeach. What do you think?

Drian    : What a funky style!! You look really different.

Pungki  : Thank you.

 

Ungkapan yang digarisbawah menunjukkan kekaguman pada sesuatu. Contoh ungkapan lain misalnya:

  • What a luxurious car!
  • How great his performance is!
  • What strong boys they are!

 


SUSANA ENDANG CAHYANI, S.Pd. M.Pd. 21 September 2011 0:0

18 September 2011
dhani
Bahasa Inggris Kelas 9

tolong kasih contoh procedure text yang menggunakan gambar + textnya, terimakasih

Untuk contoh procedure text, silahkan buka di attachment. lampiran

SUSANA ENDANG CAHYANI, S.Pd. M.Pd. 21 September 2011 0:0


18 September 2011
affrow@ymail.com
Fisika (SMP) Kelas 11

tolong mohon bantuan bapak ibu jawab soal fisika ini

1. sebuah peluru ditembakkan dgn sudut 30 derajat terhadap arah horizontal dari atas menara setinggi 500 m dgn kec v = (40 i + 30j) m/s dgn g = 10m/s

a. tentukan kec peluru pd saat t = 2s

b. tentukan posisi horizontal peluru pd saat menyentuh tanah

 

2. sebuah pesawat terbang dgn kec 40 m/s pd ketinggian 1000 m dr tanah. pesawat tsb menembakkan peluru dgn kec 150 m/s dan membentuk sudut 30° terhadap bidang datar

a. tentukan posisi peluru pd saat menyentuh tanah

b. tentukan kecepatan peluru saat menyentuh tanah

mohon dijawab makasih bapak ibu guru

 

Sdr. Ranti

Mohon anda tinjau kembali soalnya, karena untuk kepastian jawabannya perlu penegasan.

1. Dengan komponen 40i dan 30j, sudut yang dibentuk tidak mungkin 30o tetapi 37o.

2. Peluru ditembakkan dengan kecepatan 150 m/s itu relatif terhadap tanah atau terhadap pesawat.

Mohon maaf, atas jawaban ini.


Winarso, S.Pd 21 September 2011 0:0

 

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