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Consumer Electronics
Ask questions here about the electronics you use every day: from phones and computers to kitchen appliances and radios.
4,952 Questions
How do you unlock a safelink wireless SIM card?
You do not unlock a Sim card; you unlock the phone
To do this without modding the phone or getting an unlock code, you can go and purchase a Sim card add-on such as Turbosim or Hypersim.
How many cells are in a D cell battery?
The`D' sized battery, `AA", `AAA` and `C' sized batteries are manufactured to have a nominal 1.5 volts.
Answer
The electromotive force (open-circuit voltage) produced by a cell is a function of the materials used in the manufacture of its electrodes, and has nothing whatsoever to do with it physical size.
The electrochemical series of metals lists the potentials of various metal electrodes in comparison with a hydrogen electrode, which serves as a zero reference. For example, the simplest cell has a copper electrode and a zinc electrode. From the electochemical series, the potential of copper is found to be +0.34 V, and the potential of zinc is found to be -0.76 V. So, the potential difference between a copper and zinc electrode will be 0.34 - (-0.76) = 1.1 V.
The physical size of a battery (e.g. AAA, AA, etc.), providing they are of the same type, is a measure of the cell's charge capacity (expressed in ampere hours) and not of its emf.
How many violent video games are there?
Theres WAY to may to count. But i guess I would estimate around 1 billion. There's a lot of violent video-games nowadays, that's why there is a rating system for video games, so you don't have to deal with the vulgar language or violence that's included in the game.
Were there always conductors in an orchestra?
No.
Conductors as we know them first appeared in the late classical period, but there had been other types of conductor before that.
The first attempt to keep an orchestra's timing together was trialled in ancient Greece, where the 'conductor' beat the time with a stick, holding the orchestra together. The renaissance saw a return of this idea, where an individual could strike the floor with a stick or their foot, or in some cases tap a book, to keep time. Jean-Baptiste Lully died as a result of this practice. He was conducting a performance celebrating a return from an illness he had, when he accidentally hit his foot with a conducting rod. The wound became infected and he died. In the Baroque period it became more common for a harpsichordist or (rarely) a violinist to keep the piece together. The harosichordist provived a continuo to keep time, while the violinist sometimes played and waved his bow to indicate time when he was not playing. By the waning years of the classical period, the bow had been replaced with a rod and the instrument became useless to the conductor, resulting in the conductor we know today.
How did the telephone make life easier?
it was important because without telephone we could not talk to our families around the world. We would not know what could happen to somebody if there was no telephone. yes we could through tv
Your cell phone screen went blank for no reason how do you fix it?
Either your cell phone screen has had the wires knocked loose or the screen is broken all together. I've heard you can buy the LCD screens for cell phones a lot cheaper than buying a new one. If not you may have to buy a new phone.
I had a phone do this and believe it or not if yours is having the same problem as mine you can put it in the freezer for 5-10 minutes and get about 5 minutes of screen time to recover important messages or contacts. I dont know why but being a computer nerd I figured a deep freeze may help and it did!
IT works
The Islamic scientist and mathematician al-khowarizmi is credited with coining what word?
Al-jabr - the Arabic phrase we Anglicise to Algebra. He didn't invent the word itself, but the use of it.
What are all the inventions of Willis Haviland Carrier?
air conditioner ?, also with the name haviland, could have also invented an airplane engine/
The first step in manufacturing a DVD-R or DVD+R disc is to fabricate the polycarbonate plastic substrates (incorporating the spiral groove and land pre-pits) using an injection molding process.
The dye is then applied using spin coating and the metal layers by means of DC sputtering. After both sides of the disc are completed they are bonded together using a hot melt, UV cationic or free radical process. Additional decoration or printable layers are typically applied using screen printing methods.
A DVD-R (General) disc undergoes a further manufacturing step in which a specialized computer DVD recorder is used to "prewrite" information in the Control Data Zone of its Lead-in Area to inhibit direct copying of prerecorded DVD-Video discs encrypted with the Content Scrambling System (CSS).
Apart from this, and some minor differences in the configuration of the molding stamper used to create the substrates, the process for manufacturing DVD-R and DVD+R discs is virtually identical.
Where can you buy 8mm film reel with movies on it?
You can pick them up at Festival Films they have 16mm movie reels you can call them if you want them to keep one in store for you. Phone: 612-470-2172 The adress is: 6115 Chestnut Terrace Shorewood, MN 55331
Who invented the razor cell phone?
1947 Bell Labs created the cellular phone so people can talk without having to walk to the person/drive he was a fine young man
What is the difference between jfet and mosfet?
1-BJT is bipolar while JFET is unipolar.
2-BJT has low input impedence while JFET has high input impedence.
3-JFET has low power discipation as compared to BJT.
4-JFET has low noise as compared to BJT.
5-BJT is current controlled while JFET is voltage controlled.
6-JFET is mostly used in digital circuits.
Show how to use a cash register?
Check to see that the cash register has a tape. This will be the receipt that you will give to the customer and provide a record of sale for you. 1 Step2 Make sure the cash register drawer is ready. The cash register drawer is where the money is kept. There is a place for change and bills and usually you will store large bills and credit card receipts under the drawer.
2 Step3 Scan the products when a customer comes up to you. Each item a customer wants to buy has to be scanned by the cash register. This includes the inventory number and the price of the product.
3 Step4 Hit total on the cash register. After all the products are scanned you hit the total button and it will be displayed on the cash register. Inform the customer the amount of money he owes.
4 Step5 Enter the amount of money the customer hands you into the cash register and it will automatically tell you the change you must give to the customer. For example, if the customer owes $15 and gives you $20 the cash register will do the math and tell you to give the customer $5 back.
5 Step6 Accept credit cards as payment. If a customer pays by credit card instead of cash, there is a machine that they will use to make the transaction. The receipt will have this information on it. The copy the customer signs is the copy you will place in the cash register in lieu of money.
6 Step7 Complete the sale by giving the receipt to the customer. You have now learned to use the cash register.
What are the disadvantages of electronic tagging?
Can a person be tagged with tracking device? A person brushed up against me I felt a slight sting to my upper right shoulder. These people can now track me even without my cellphone on me or in my car.
thermistors change value as thermal units increases or decreases . that can be used to shut down items that unnecessarily overheat
What do you when your tamagotchi isn't happy or it doesn't want to play games with you?
kill it. nooooooo! never kill it. give it a snack or two and it will become less tense and won't mind playing a game. when it does somthing wrong, give it time out but if it does somthing good, praise it. just pay attention to it and it shouldn't get too bad.
If this is for your Penn-foster test i can tell you one thing is that the the answer isn't "accelerated toward the anode".
Fission and fusion of nuclear power plant?
Fission is the splitting of an atom, fusion is the joining of 2 atoms into one. In most fission, neutrons are bomabarded at the nucleus of uranium or plutonium and this causes a ripple effect of more neutons being released from the fuel. The process generates large amounts of heat which is either used for destruction or steam engines. Fusion most often occurs with 2 Hydrogens being fused together to form helium. Deuterium (Hydrogen with a neutron and proton instead of just a proton) and tritium (one proton and two neutrons) are high energy atoms that are used in testing nuclear fusion. Our star (the sun) is based, like most stars, on Hydrogen being fused to generate heat and Helium.
What is the Frequency response of common emitter amplifier?
The voltage gain is a measure of the amplified output available at the collector terminal divided by the voltage measured on the base. This if you have 10 mV applied to the base and voltage of 1 volt at the collector the voltage gain is 100
ANSWERThe maximum voltage gain of a common emitter amplifier is dependant on the transistor itself. Some have only a very small voltage gain such as in Radio Frequency Power transistors. These are almost all used as common emitter circuits for bipolar transistors or common source for FETs.. On the other hand some darlington transistors can have common emitter gains of hundreds of thousands.If the stage has an unbypassed emitter resistor, the voltage gain is equal to Rload/RE, (Rload is the parallel value of the resistance from collector to the supply and the resistance of the load).
If the emitter resistance is bypassed, the value of resistance to be used for RE is the internal Re which is equal to 25mV/Ie
The gravitational force acting on a mass is the predominant factor determining projectile motion. The actual mass of the object is often irrelevant. To demonstrate this, an object of 100kg mass and an object of 1kg mass are simultaneously dropped from the same height, in vacuum. Observe, they simultaneously hit the floor. In an atmosphere, under conditions of similar geometry, objects of differing density will still fall at the same rate. A 3cm diameter sphere of lead, versus a 3cm diameter sphere of cork, they both have the same shape and size, hence the same aerodynamic properties. Observe, they simultaneously hit the floor. The masses were different, but they still hit the floor simultaneously.
When considerations of air resistance are taken into account, the density can certainly be a factor. (Remember, density is a ratio of mass and volume, or a description of how you use matter to create a structure of a given volume). To demonstrate this, a feather of 0.005kg mass and a solid lead ball of 0.005kg mass are simultaneously dropped from the same height. Observe, the lead ball heads straight to the floor, while the feather flutters about, landing quite a bit later. The air resistance acting against the feather is much greater, it's aerodynamic properties being much different than that of the sphere.
Perhaps not so much the density, but the aerodynamic properties, that affect projectile motion through a non-vacuum. Shoot a solid lead bullet through the air and see how far it goes. Then shoot a feather through the air - the aerodynamic drag forces acting on the feather act to slow it down - and see how far it goes.
What Things do Conductors Have in Common?
If you are talking about electricity then all conductors have either de-localised electrons in their structure which means when a current is passed through they will move and carry the current with them.
Ions can also carry charges but they have to be in solution or in liquid form.
What?
In May 28, 1946, a survey conducted by Bell Labs offered “a discussion of some proposed names”
Among them was "transconductance/transfer varistor".
So the question repeats the common mistake that it was "transfer resistor".
Where do you get the music to put on to your sandisk mp3 player?
read the instruction manual or just go to media player, press the sync, plug in your mp3 player, and drag songs to the side of the "sync list" then press sync...
ATX (Advanced Technology Extended) is a combination of standards for computer system power supplies and chassis dimensions. It was developed as a replacement for the once-common AT form factor.
