February 27, 2010
- Are you smarter than a 5th grader?
Nuoc_Mam_Boi asked: 1.Bob say,” I am thinking of a number. If I decrease it by 19, and then add 40, I get 48.” What is Bob’s number? 5. Of the 485 people who paid to attend the eight-grade play, 121 were adults. The rest were students. An adult ticket cost $5.00. The total ticket sales [...]
- How many of these things will your children remember?
☼ GƖơώ ✞ Ѡɪηǥs ☼ asked: Inserting a VHS tape into a VCR to watch a movie or to record something. Super-8 movies and cine film of all kinds. Playing music on an audio tape using a personal stereo. See what happens when you give a Walkman to todays teenager. The number of TV channels [...]
February 20, 2010
- Shortwave Receivers? Have a Recommendation?
Suspended asked: Entry level with attic SW antenna. I have a cheapie SW radio with 9 bands, but I only get Spanish/Cuba and religious broadcasts. Know of a radio that has great reception under 300.00 bucks?
February 19, 2010
- Using the sun to find true West?
Ugotta B Kiddin! asked: I am a shortwave radio operator. We have charts that show the correct beam heading for overseas contacts. But a compass shows MAGNETIC North, a bit different than TRUE North! I want to use the sun to show me where West is (rises in the East, sets in the West.) But [...]
January 18, 2010
- Maximum and minimum inductance?
haybay asked: A tank circuit in a radio transmitter is a series RCL circuit connected to an antenna. The antenna broadcasts radio signals at the resonant frequency of the tank circuit. Suppose that a certain tank circuit in a shortwave radio transmitter has a fixed capacitance of 1.98 10-11 F and a variable inductance. The [...]
January 15, 2010
- Complete this science question?
coolness asked: Shortwave radio waves are called….
December 25, 2009
- Does anyone know the ISS Short Wave Frequencies Relayed through Goddard Space Flight Center?
cooldude asked: I have a shortwave radio, and I heard that you can not get direct contact with ISS due to the fact it operates above the 30 mhz frequency limit on shortwave. However, I heard that it was possible to tune into Goddard Space Flight Center via Shortwave. I don’t know what frequency to [...]
November 11, 2009
- Is there an inexpensive way to have a longer distance wireless Internet connection span 3-4 city blocks?
ungchungs asked: I’d like to set my Dad up with Internet, but he would only use it occasionally, probably once or twice a month. Not nearly enough to merrit the $30 it would cost for DSL or Cable (I checked the prices in his area). I thought of dial-up, but he is gets his phone [...]
October 22, 2009
- does anyone know anything about it?
rAwRnEsS x] asked: my neighbor is pretty odd….. one day they started setting up these poles in their field. they were set up in a square with 4 poles. then he had this wire strung at the top of them all the way around. my dad kinda made friends with them and they said that [...]
October 1, 2009
- How many will miss or even know about these?
J.B. Holiday asked: 100 Things Your Kids May Never Know About Audio-Visual Entertainment 1. Inserting a VHS tape into a VCR to watch a movie or to record something. 2. Super-8 movies and cine film of all kinds. 3. Playing music on an audio tape using a personal stereo. See what happens when you give [...]
September 23, 2009
- Find the (a) minimum and (b) maximum inductance of the tank circuit?
a asked: A tank circuit in a radio transmitter is a series RCL circuit connected to an antenna. The antenna broadcasts radio signals at the resonant frequency of the tank circuit. Suppose that a certain tank circuit in a shortwave radio transmitter has a fixed capacitance of 2.4 x 10-11 F and a variable inductance. [...]
September 8, 2009
- The speed of electromagnetic waves in vacuum is 3.0 108 m/s?
Nina Williams asked: a) Wavelengths of (visible) light waves range from about 390 nm in the violet to about 710 nm in the red. What is the range of frequencies of light waves? minimums and maximums. b) The range of frequencies for shortwave radio (for example, FM radio and VHF television) is 1.5 – 300 [...]
August 9, 2009
- Can you help ASAP please?
infamy360 asked: John’s Radio Shop wants to buy a new line of shortwave radios. Manufacturer A offers chain discounts of 16/14, while Manufacturer B offers terms of 15/12. The single equivalent discount rate of ? is the best deal. A .748 – Man A B .2776 – Man B C .252 – Man A D [...]
August 6, 2009
- News broadcast in ‘easy’ Japanese?
Michael C asked: I was wondering if anybody knows about newscasts available some place on the net or shortwave radio in ‘easy Japanese?’ Several other countries (including US and France) have daily or weekly newscasts in a more ‘accessible’ version of their respective languages. What this means is that they use a deliberately limited vocabulary [...]
July 22, 2009
- electromagnetic waves?
GatorGal asked: The speed of electromagnetic waves (which include visible light, radio, and x rays) in vacuum is 3.0 x 108 m/s. Wavelengths of visible light waves range from about 400 nm in the violet to about 700 nm in the red. What are the (a) minimum and (b) maximum frequencies of these waves? The [...]
July 17, 2009
- Can you name 50 random things in your bedroom?
igsmrlmmu asked: so… i was looking for one my ps2 game, and failing. I started looking at the things lying around my room, and i thought… man i am weird, or something… So, can you guys name 50 things that are sitting on your desk, on your bed, floor in the closet, whatever… but inside [...]
July 16, 2009
- Need help with this word problem?
Quetondra Dailey asked: Home Depot wants to buy a new line of shortwave radios. Manufacturer A offers a 21/13 chain discount. Manufacturer B offer a 26/8 chain discount. Both manufacturers have the same list price. What manufacturer should Home Depot buy from?
- The speed of electromagnetic waves in vacuum is 3.0 108 m/s?
Nathan M asked: (a) Wavelengths of (visible) light waves range from about 425 nm in the violet to about 740 nm in the red. What is the range of frequencies of light waves? Hz (minimum) Hz (maximum) (b) The range of frequencies for shortwave radio (for example, FM radio and VHF television) is 1.5 – [...]
July 5, 2009
- Shortwave Antennas & Mobile Antennas?
natesean asked: A quick question — If I wanted to use a portable shortwave reciever (say a Grundig G5) as a mobile receiver, would I run the risk of burning out the radios inner circuits if I decided to try to use a larger mobile antenna such as a High Sierra HS-1800/Pro Antenna? Or would [...]
May 12, 2009
- find the minimum and maximum inductance of the tank circuit?
a asked: A tank circuit in a radio transmitter is a series RCL circuit connected to an antenna. The antenna broadcasts radio signals at the resonant frequency of the tank circuit. Suppose that a certain tank circuit in a shortwave radio transmitter has a fixed capacitance of 2.4 x 10-11 F and a variable inductance. [...]