calculate the acceleration of an object

ball on an inclined plane

you ever put a ball on a slant board??
what happened to the ball???
course tersevbut ball will move down with greater velocity. objects in motion changes dikatan accelerated pace.
so the acceleration is a change of pace every one unit of time. acceleration can be either increase or decrease the speed. accelerated if the object is said to increase the speed and otherwise slowed when the speed is reduced. acceleration twofold:

a. average acceleration

           an object moving with velocity fluctuations then the object has acceleration fluctuations as well. change in velocity divided by the time interval is called the average acceleration. the average acceleration formulated :

  a    =  ∆v / ∆t

           

     b. instantaneous acceleration

         change of pace in a very small time intervals called instantaneous acceleration. instantaneous acceleration is the limit of a change of pace for the time interval approaches zero.

a       =     lim    ∆v / ∆t

∆t-0

instantaneous acceleration can also be formulated as a derivative of the velocity.

a   =   dv / dt

to better understand, consider the following sample questions :

    motorcycle moved following equation as a function of time v = 3t²- 5t+4, with v in m / s and t in seconds. specify:

a. average acceleration when t = 2 and at t = 3

b. instantaneous acceleration at t = 4

settlement :

a. known equation of velocity v =  3t²- 5t + 4

    to find the average acceleration, use the formula : 

         a    =  ∆v / ∆t         a    = v₂ - v₁ / t₂ - t₁

     the velocity at t = 3 is :

      

     v₂ = 3t²- 5t + 4
         = 3 (3)² - 5 (3) + 4
         = 16 m/s

    and velocity at t = 2 is :

     v₁  = 3t²- 5t + 4
          = 3 (2)² - 5 (2) + 4
          = 6 m/s

so the average acceleration is :

        a   =  v₂ - v₁ / t₂ - t₁
             = 16 m/s - 6 m/s / 3s - 2s
             =  10 m/s²

b. instantaneous acceleration can be determined by using a differential calculation, thus :

    a  = dv / dt
       = d ( 3t²- 5t + 4 ) / dt
       = 6t - 5
       = 6 (4) - 5
       = 19 m/s²

we can now calculate the acceleration of an object with a simple formula .. :)

Creating Simple Magnet

surely already know what that magnet????
Apart from that produced by the natural stone, magnets can also be our own tables. one of them by way of electricity in one direction. Want to know how? Watch carefully the following experiment yah ..

The tools you need are :


1. Cables containing copper wires (only if the cord is a duplicate)
2. Spikes (if you can nail a little long)
3. battery
4. Paper clips or other small metallic (tacks, needles, etc.)













How to make it:

1. Peel the skin of copper cable at each end-jung
2. Wrap the copper wire on a nail (try as close as possible)
3. Glue the ends of the copper wires on the battery, and wait a few moments
4. To test it try to hold the nail on the paper clip or other small metal
5. Try to observe what is going on?

         




How did it happen?

Nails can be like a magnet because there is a process called electromagnetic. In the vicinity of the electric current carrying wire contained magnetic field. In this experiment, the power source is a battery drain flows along copper wires wrapped around the nail. The more loops, the greater / stronger magnetic field. As a result of the existence of this magnetic field, the paper clip / other minor metals can be attached to the nail. 
 please try :)

Electricity in our day

In our day-to-day power word is not a stranger anymore. Many household appliances that use electricity, such as irons, radios, televisions, refrigerators, fans, electric sewing machine, magic jar, and a washing machine. This indicates that the electrical energy in our lives have become a staple. It is therefore important for us to learn about electricity. In physics, power is divided into two types, namely static and dynamic power. Static electricity studying the electrical properties of an object regardless of the movement or flow of electric charge.

1.      Static electricity

(elektrostatic) is a collection of large amounts of electric charge, the static (no flow), but in case of discharging the charge time is very short.

A. How Generates Electricity Charged Objects

Electrically charged object is an object that have excess or shortage of electrons. Some simple ways to create static electricity are:
1. Plastic ruler rubbed on dry hair will negatively electrically charged.
2. Glass that has been rubbed with fur would be positively charged.

B. Types of Electrostatic Discharge

In the atom consists of a nucleus and electrons. The nucleus consists of protons and neutrons, positively charged protons and uncharged neutrons (neutral). Atom is called neutral if the number of protons in the nucleus equals the number of electrons surrounding the nucleus. Positive atom is an atom that has more positive charge than negative charge.

C. Coulomb Law

Charles Augustin de Coulomb was the first to examine the relationship with the two charge electric force and the distance between them by using a torsion balance. In that study ultimately concludes Coulumb in a law called the law of Coulumb:  “large repulsion ataugaya attraction between two electrically charged objects, is directly proportional to the respective electric charge and inversely proportional to the square of the distance between the two charged objects.”

Mathematically, Coulomb's law can be formulated:

 F = k q1 q2
           r²

Description:
F = force of attraction or repulsion (Newton)
k = constant = 9 × 109 N m2 C-2
q1, q2 = charge of each object (Coulomb)
 r = distance between the two objects (meters)

D.   Static Electricity Utilization

Utilization of static electricity in everyday life include:
1. The antidote Lightning
2. Van de Graaff Generator
3. Tools smoke clotting
4. Painting a car
5. Photocopiers

2.      Dynamic Power

Dynamic power is the power that can move. how to measure the current strength in dynamic power is the electrical charge dibagai time with the unit and the electric charge is coulumb time unit is second. Strong currents in the circuit branches with Kuata incoming flow with strong currents coming out. while a series circuit current strength remains the same every obstacle edges. Rather different voltage resistance. a series circuit voltage depends on the resistance, but the branching circuit voltage has no effect on resistance. all that has been stated by Kirchhoff's law which states that "the number of strong electric currents that go together with the amount of electrical current coming out strong." Ohms law can be summed up how to measure voltage current × resistance is strong. Barriers value is always the same as the voltage is proportional to the current strength. voltage has units of volts (V) and the current strength is amperes (A) and resistance is ohm.

experiment :

1). Tools and Materials:

2 pieces of plastic ruler (try relatively new)
2 pieces of glass rods
1 piece of woolen cloth
1 piece of silk fabric
1 piece stative
 thread

2). procedure:

a. Hang a plastic ruler with a piece stative
thread, then rub one end of the ruler
aloud with woolen cloth.
b. A moment later, another ruler rub on one
ends violently with wool cloth, hold the end of the
The first ruler who had been scrubbed. Observe and record the results
on the data table.
c. In the same way, do to stem glass
rubbed with a silk cloth.
d. Now, rub back one end of a plastic ruler
has been suspended from the stative with woolen cloth, then
Rub one end of the glass rod with a silk cloth and
bring on the end of the ruler charged. observe and
record the results on the data table.

if we rub a glass rod or a ruler and a piece of plastic with cloth or amber will show the effects of static electricity. cause an object
electrically charged due to the rubbing and the object is said to have a charge
electricity. The electrical charge on the object affected by the constituent atoms
forming ions. Ionization process due to several things such as
induction, the influence of external energy either through friction, heating, etc.

dangers of smoking for pregnant women

        For pregnant women should never try smoking. Nicotine is inhaled and enter the bloodstream can interfere with fertility womb. And nicotine mixed blood will go to the fetus. This is very dangerous for the fetus at all, that can be generated is due to premature birth.

Dangers of smoking for pregnant women and fetuses, among others :

• More likely to experience premature birth, pregnancy complications and stillbirths
• Placing the baby in a higher risk for sudden infant death syndrome
• The baby is more likely to have decreased lung function
• Pregnant women who smoke risk the risk of miscarriage by 25 percent than non-smokers. Other than that
   this woman had 1.5 to 2.5 times the risk of having an ectopic pregnancy, so to raise the fetus is to be 
   operated
• Water early rupture of membranes before the pregnancy, it would threaten the pregnancy, the fetus even 
   pregnant
• Inhibits the growth of the fetus
• Reduced milk production
• Having a baby with a birth weight lower than average than women who do not smoke. The main cause is
   that blood flow to the fetus blocked so that the intake of nutrients from the mother to the fetus is reduced


                     

TRANSFER'S HEAT

HEAT TRANSFER'S

calorimeter to measure the heat

    

      You definitely have to make hot tea or coffee or even like. when you're holding a glass of hot tea or warm milk is what you feel is hot. why is that???
it can happen because of the heat that is in a glass of warm water such that its temperature higher temperatures move into his hands lower. so that heat is the transfer of energy from a high temperature to a lower temperature object. while the unit itself is the Joule heat.

water heated on the stove

           have you boil water in a pot and heating it on the stove???
Why do you heat the water may boil??
it is because the heat is on the burner switch to the pan and then move on to the water so that the water can boil. naaaaah its now the question is how heat can move??? Heat can be transferred in three ways: conduction, convection and radiation.

HEAT TRANSFER'S


1. In Conduction Heat Transfer of
             heat transfer by conduction is the transfer of heat to a substance without being followed by the displacement of molecules - molecules her. this is why the pot shaft is made ​​of an insulating material such as plastic or wood. because the material is an insulator does not easily conduct heat to heat food or water.


2. In Convection Heat Transfer of
            heat transfer by convection is kebalin of heat transfer is conduction heat transfer to an object or substance followed by molecule - the molecule. examples such as onshore wind and sea're trying.

examples of heat transfer by radiation

3. In Heat Transfer of Radiation
           The radiation heat transfer is heat transfer that does not require intermediaries. for example as the heat of the sun to the earth. heat until hot sun can not deliver conduction or convection. because the air is the conductor of the worst and also between the sun and the earth there is a vacuum that can not conduct heat.

example from transfer's haet

and many more examples - another example of heat transfer. may be useful yaaaa ^ _ ^
do not forget to continue to visit this blog ya: D

siapkah anda menikah????

Bismillah..

Kata siapa cuma yg pacaran yg bisa lebay..??

Yang sudah halal pun juga bisa lebay lho.

Buktinya ada puisi dari seorang suami kepada istrinya gene:

Sayang..

Apapun yg kau pinta, apapun yg kau ingin,

Kan kuberikan apa yg kupunya,

Kan kulakukan semua yg kau ingin,

Kan kuambilkan rembulan bila kau mau,

Kan kukantongi bintang2 bila kau ingin,

Bila kau tak percaya..belahlah dadaku.

Hehe..bener kan yg halal pun bisa lebay..??

Tapi lebaynya kan syar'i yak..( xixi emang ada ya lebay yg syari? :p ).

Sahabatku..

Aku tidak sedang ingin membahas tentang lebay atau tidaknya ungkapan seorang suami ataupun yg pacaran.

Tapi ijinkan aku memberikan gambaran tentang sebuah komitment tentang jalan menuju separuh agama alias menuju menikah.

Memang sih menuju nikah itu modalnya TAK CUKUP HANYA CINTA.

Isinya bukan cuma kata2 cinta manis dan ungkapan2 sayang ataupun nikmatnya kebersamaan yg sudah halal.

Karena didalam pernikahan juga berisi aneka masalah hidup yg membutuhkan jawaban.

Misalkan, bagaimana saat beras habis, bgaimana saat uang belanja mepet dan mesti cari pinjaman, bgaimana agar dapur tetap mengepul, bgaimana agar tidak diusir pemilik kontrakan krn belum bayar sewa, bgaimana caranya agar tetep bisa ngeliwet dan kendil ora guling (jangan mikir buat anting2..hehe)..de el el..

Maka pantaslah jika banyak yg bilang: CALON SIH SUDAH ADA. TAPI MENIKAH ITU TAK HANYA MODAL CINTA. LEBIH DARI ITU, MENIKAH ITU TAK HANYA BUTUH KESIAPAN FINANCIAL, TAPI JUGA MENTAL DAN ILMU !

Hmmm..saya sepakat dan sangat2 setuju dengan pernyataan itu.

Namun JANGAN SAMPAI prinsip itu justru malah membelenggu diri kita sendiri sehingga TAKUT untuk menikah. Denga alasan belum siap mental dan ilmu, padahal finansial sudah mampu.

PAdahal, kalau mau jujur dan melihat realita di sekeliling kita neh, perhatikanlah...banyak bapak2 yg profesinya tukang becak, pemulung, pedagang asongan, tukang tambal ban, dan profesi2 lain yg notabene kita anggap (MAAF) golongan ekonomi bawah..mereka secara ilmu (baik ilmu agama atau pengetahuan) banyak yg tidak atau belum paham bahkan anda semua jauh lebih paham dari mereka. Namun lihatlah..mereka BERANI MENIKAH dan menghidupi keluarganya.

Kenapa..??

Karena mereka yakin bahwa rejeki itu sudah ketetapan yg pasti dari Allah, teteap akan diberikan kepada kita selama kita mau berusaha menjemputnya.

Kalau mereka berani menikah dan menghidupi keluarga, sedangkan kita bilang belum siap karena belum punya bekal mental dan ilmu yg cukup, bukankah itu artinya kita kalah dengan mereka? para tukang becak, pemulung, pedagang asongan...??? Maaf yach sobat jika engkau tersinggung..! ^.^

Semoga menjadi motivasi untukmu sobat..

Paling tidak mulai ada tumbuh keyakinan dalam hatimu untuk tidak ragu-ragu Menuju Separuh Agama !

Oceee...?

keywords: Menikah, persiapan menikah, siap menikah

sumber : http://fs-galery.blogspot.com/2012/05/siapkah-anda-menikah.html

cinta itu sederhana

cinta memang indah,,,
mampu membuat seseorang tersenyum lebar dan juga bisa membuat dia menangis haru
cinta bukan karena dia gagah atau cantik
tapi cinta karena ketulusan hati nya
cinta juga bukan karena harta
tapi karena kepercayaan
saat cinta datang menghampiri hati yang kesepian
dengan bangga cinta itu diterima
tapi saat rasa bosan datang menghampiri sepasang kekasih yang tertinggal hanya sebuah kenangan
yang menyayat hati
itu lah cinta mampu membuat orang merasa paling bahagia saat dia ada
dan bisa membuat seseorang hancur remuk berkeping keping saat ia pergi
dan tak lagi disini ...
tapi percaya lah cinta yang abadi itu adalah cinta yang sederhana
cinta yang hanya melihat ketulusan hati dan apa adanya diri seseorang
bukan cinta yang ada maunya dan melihat dari sisi ada apanya seseorang tersebut
seperti cinta ku pada mu
cinta yang sederhana yang hanya mengharapkan ketulusan dari hati mu
dan cinta itu tak kan pernah mati
karena ku sadari hadirnya diri mu terkadang tak dapat terjamaahkan
kau mampu membuat ku selalu merasa disayang
kau lah cinta yang ku inginkan.. :)
 <3 Undo Fatwaturrobi <3