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What are the frequencies for toy walkie-talkies around the world?
The cheapest transmit/receive in AM in the 27 mHz range, usually with less than 100mw (milliwatts). 27.125 (CB Channel 14) is the most frequently used frequency. The next level transmit/receive in FM in the 460 mHz UHF range: Channel 1: 462.5625 Channel 2: 462.5875 3: 462.6125 4: 462.6375 5: 462.6625 6: 462.6875 7: 462.7125 8: 467.5625 9: 467.5875 10: 467.6125 11: 467.6375 12: 467.6625 13: 467.6875 14: 467.7125
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What happened to the wavelength and frequency when you increased the rate at which the spring toy moved left and right?
The wavelength decreased and the frequency increased.
Why are different household AC electrical service voltages and frequencies used in the various countries around the world?
Single-phase voltage and frequency Countries in Europe and in many other areas of the world use a standard mains supply voltage for households and businesses of between 220 …and 240 volts for lighting as well as for high-powered appliances. This is twice that of the voltage used for ordinary lighting and low-power appliances in US, Canada and most of the Americas, and also Japan. In those countries, and others using the same power distribution system, the standard mains supply voltage for low-power appliances is between 115 and 127 volts. Note that currently all new American buildings in fact get 240 volts split into two 120 volts "hot" wires (often called "legs") with a common neutral wire. Major appliances, such as virtually all drying machines and ovens, are now connected to 240 volts. The mains frequency in Europe and other 230 Volt areas is 50 Hz (Cycles per second) compared to 60 Hz in US, Canada and other 120/240 Volt areas. Some 60 Hz appliances will work fine but others with simple motors will run too slow on the lower frequency of 50 Hz. Similarly, some 50 Hz appliances will work fine but others with simple motors will run too fast on the higher frequency of 60 Hz. However the most important difference is how the Neutral wire is connected: 240 volt 50 Hz service A 240 volt 50 Hz appliance can have up to 3 wires altogether: one single 240 volt "live" or "hot" wire; a neutral wire; a safety "earth" or "ground" wire but this is not required if the appliance is of the type known as "double insulated". The hot wire feeds alternating voltage from the power station to the load and, because the voltage is alternating, the load draws an alternating current. Then the neutral wire returns the current to the power station to complete the circuit. 240 volts 60 Hz service An appliance that is designed to be connected to strictly 240 volts 60 Hz is connected with only a two wire cable plus a safety ground wire. (For example 240 volt 60 Hz base board heaters use that.) The only time a cable with three wires plus safety ground is used is if 120/240 volts is needed in the equipment. (For example kitchen ranges or washing machines which have time clocks or programmers that require only a 120 volt feed.) Thus an appliance designed to run on a 240/120 volt 60 Hz supply can have up to 4 wires altogether: two 120 volt 60 Hz live "hot legs" which run in opposing phase to one another: when one hot leg goes "+" (120 volts positive) the other leg goes "-" (120 volts negative); a neutral wired as a "central" common current return conductor: a safety "ground" wire but this is not required if the appliance is of the type known as "double insulated". One of the two hot wires feeds a 120 volt alternating voltage from the power station to the 120 volt load - the clock or programmer - and, because the voltage is alternating, that load draws an alternating current. Then the neutral wire returns the current to the power station to complete the circuit. Important conclusion There is a 240 volt voltage difference between the neutral and the hot conductor in the 50 Hz system and only a 120 volt voltage difference between the neutral and each of the hot conductors in the 60 Hz system. That is why an appliance designed to be connected onto the 50 Hz system cannot be used safely on the 60 Hz system without first having a proper technical inspection done, followed by any necessary modification work done to ensure that the appliance can be operated safely because, in the main breaker box, at the point where the 60 Hz "neutral" gets connected to the ground, this difference will cause serious problems! A licensed electrician or electrical engineer would be able to consider whether or not a particular large appliance, that was manufactured to work on 50 Hz-only, could be modified to run safely at the higher 60 Hz frequency. However it won't usually be worth the expense of doing the work because it would be more cost-effective to buy (new or secondhand) an equivalent large appliance designed to work on 60 Hz. The system of three-phase alternating current electrical generation and distribution was invented by a nineteenth century creative genius named Nicola Tesla. He made many careful calculations and measurements and found out that 60 Hz (Hertz, cycles per second) was the best frequency for alternating current (AC) power generating. He preferred 240 volts, which put him at odds with Thomas Edison, whose direct current (DC) systems were 110 volts. Perhaps Edison had a useful point in the safety factor of the lower voltage, but DC couldn't provide the power to a distance that AC could. When the German company AEG built the first European generating facility, its engineers decided to fix the frequency at 50 Hz, because the number 60 didn't fit the metric standard unit sequence (1,2,5). At that time, AEG had a virtual monopoly and their standard spread to the rest of the continent. In Britain, differing frequencies proliferated, and only after World War II was the 50-cycle standard established. However that might have been a mistake! Not only is 50 Hz 20% less effective in generation, it is 10 - 15% less efficient in transmission and requires up to 30% larger windings and magnetic core materials in transformer construction. Electric motors are much less efficient at the lower frequency, and must also be made more robust to handle the electrical losses and the extra heat generated. Today, only a handful of countries (Antigua, Guyana, Peru, the Philippines, South Korea and the Leeward Islands) follow Tesla's advice and use the 60 Hz frequency together with a voltage of 220 - 240 V. Originally Europe was 120 V too, just like Japan and the US today. It has been deemed necessary to increase voltage to get more power with less losses and voltage drop from the same copper wire diameter. At the time the US also wanted to change but because of the cost involved to replace all electric appliances, they decided not to. At the time (1950s-1960s) the average US household already had a fridge, a washing-machine, etc., but not in Europe. The end result is that now it may seem, to some people, that the US has not evolved from the 1950s and 1960s, and still copes with problems as light bulbs that burn out rather quickly when they are close to the transformer (too high a voltage), or just the other way round: not enough voltage at the end of the line. (115 to 127 volt spread!). For more information see the answers to the Related Questions shown below. If you are interested to know what what the different standard mains voltages and frequencies are around the world - and what the various plugs look like - the Related Link shown below has all the details.
Toys "R" Us in Times Square, New York City is the world's largest toy store at over 110,000 square feet (10,000 m2).
At the time of World War 1, radios were large and bulky. Eventually some radios were installed on aircraft but very few airplanes had them. So there were no walkie-talkie radi…o's. BTW, the term Walkie-Talkie was used to describe the radio that an infantryman could place on his back and carry into the field. He talked on it using a handset much like a telephone. Whereas at Handie-Talkie was a hand-held, one-piece radio that looked much like the early Motorola Cell Phones from the 1980's. However, most people refer to this portable radio as a Walkie-Talkie.
A hula hoop or a Chinese jumprope. _____________ from the SoupQueen: I think you are likely talking about a Skip Ball, or what was called a "Footsie" when I was young enough t…o use one. It was a ring that fit around your ankle, and attached to the ring was a long rope with a plastic bell with a jingle-bell inside. As you spun it around your ankle, you had to hop over it with your other foot :) Now they have them with streamers, they light up, they play music... I prefer Old School with a bell! My 10-year old daughter loves to play with hers.
There are thousands upon thousands of poodles all over the world.
Well, dogs are like this... sometimes if you give your dog a toy that looks like a dog/puppy, it will take it as its partner or puppy ANSWER: Some dogs go through a "false… pregnancy" period where they will adopt a toy (it can be anything.. one of my dachshunds currently thinks a set of small stuffed animal turtles are her babies). Generally, they stop acting maternal toward the toy after a while, but while they are "mothering" it they should be allowed to go with their instincts. Tossing the toy around or "harming the baby" in any way will make them extremely agitated, sad, and upset.
Actually, many parents would be surprised to learn that some of the most popular toys today have been around since they were kids. From Tonka Trucks to Play-Doh, the toys that… were popular then remain so today, topping holiday wish-lists and generating millions of dollars in revenue. No toy demonstrates this than the ever-popular Barbie doll, which was rated girls' #1 most asked for toy last holiday season. Yet these dolls have been around since 1959, when a woman named Ruth Handler decided her daughter would have more fun with three-dimensional dolls than the paper dolls she was used to. Within a year, Barbie dolls became the highest-selling fashion doll in history. For the rest of the story, click the link below
To "toy around" with something means to be considering something, without having made a final decision, e.g., "I am toying around with the idea of moving to New York, although… California is also an option." For the dictionary definition, see the Related Link.
Mr. and Mrs. Potato Head
The origin of toys is prehistoric; dolls representing infants, animals, and soldiers, as well as representations of tools used by adults are readily found at archaeological si…tes.
To be a great beyblader, you need the right beyblade. I thought that attack beyblades were really good and so I bought one. But I lost every battle. So I bought a defense type… thinking that it would turn things around, but I lost every battle again. So I bought a stamina type beyblade, (Flame Sagittario C145S) I have been winning every battle since then. You see, attack type beyblades usually go around in circles on the outside but stamina stay still and they spin in the center, so when the attack type is going around the outside and losing all of its energy, the stamina type is spinning in the middle and stamina types are meant to be able to maintain energy. When the attack type finally come to the center and hits the stamina type beyblade, then the stamina wins. The stamina wins because the stamina beyblade has more energy than the attack at that point. That is how I win, but it all depends on you, some people can make the attack beyblade go into the center and attack the other beyblade and then the attack sometimes has the advantage depending on the type of beyblade. So if you are aiming to be the best blader you can be, then I suggest that you find the right type of beyblade. Also, you will need practice. The practice you do depends on the type of beyblade. If you are a stamina type beyblader, like me, then practice trying to get the beyblade spinning in the center and stay in the center. The less it moves the better the chance to winning the battle. If it's an attack type, try to get the beyblade into the center as quick as you can before it loses all of its energy. If it's a defense type, then try to make it spin on the outside, not trying to hit the attack beyblade but just so you don't hit it too often and if you are a balance, then try to make sure that you use all of your strength to make it spin faster. Also, if you are going to practice, then you might need somewhere to practice. Some people don't have a beystadium at their home like me. But some thing that I have found useful is the toilet. If you have a defense type then you can put a bucket in the toilet and spin the beyblade on the seat. If its a stamina, you can do it anywhere smooth, like wood or the bench. If attack, then you put the stopper on the bathroom sink or the bath and same for the attack.
In US in WW2
Answer First of all let's agree on what a Walkie-Talkie is. The World War Two Walkie-Talkie was a large backpack unit, with an aerial sticking up, that yo…u talked into and listened using a hand-held telephone-like device. It weighed 40 pounds and operated on FM frequencies. (1944 and beyond. Before that it was AM))It could operate in an area up to 10-20 miles. The smaller "Spam Can" unit (SCR-536)-- which most people mistakenly identify as a Walkie-Talkie -- was a hand-held unit that you talked into on one end and listened on the other. It was shaped like a large cardboard milk carton (Or the tin can that the GI's SPAM came in -- hense the name) It weighed about 9 pounds or so (I can't remember exactly) and operated on FM. The Walkie-Talkie was mostly used for longer distance taffic -- ship to shore, air to ground, headquarters to headquarters, etc. The Spam Can was used for shorter distances -- front line traffic ... platoons, companies, battalions, observers, etc. Both units allowed you to walk and talk at the same time -- or remain stationary. In a way they could be likened to the modern day cell phone. In heavy combat they were the only electronic means of communication on the front lines --until the Signal Corps people could lay and string wire for telephone communication. Hope all this answers your question. If not, come back. vcs