How do I figure out how many telephone poles there are in this physics problem?
Q. Agent Bond is standing on a bridge, 18 m above the road below, and his pursuers are getting too close for comfort. He spots a flatbed truck approaching at 26 m/s, which he measures by knowing that the telephone poles the truck is passing are 25 m apart in this country. The bed of the truck is 1.5 m above the road, and Bond quickly calculates how many poles away the truck should be when he jumps down from the bridge onto the truck, making his getaway. How many poles is it?
Asked by DOn H - Wed Jan 30 17:28:28 2008 - - 1 Answers - 0 Comments
A. He needs to calculate how far the truck will travel in the time it takes him to drop 16.5 m. Acted upon only by the force of gravity, an object will accelerate downward at 9.81m/s . The relevant equation is s = ut + at /2 --- s = distance covered, t = time in seconds, a = 9.81m/s and u is the initial velocity (= 0m/s for a dropped object) rearranging and solving for t we have t = 2(s - 0)/a t = 2(16.5 - 0)/9.81 t = 1.83s Knowing he has 1.83 seconds to fall, our intrepid hero must "lead the truck" by the distance the truck will cover in that same time. 26m/s X 1.83s = 47.6m Assuming there's a pole very near the bridge, Bond must jump just after the truck has passed the second pole away. Got it? (Our guy is a wizard at mental… [cont.]
Answered by Catenary - Wed Jan 30 18:05:03 2008
Q. Agent Bond is standing on a bridge, 18 m above the road below, and his pursuers are getting too close for comfort. He spots a flatbed truck approaching at 26 m/s, which he measures by knowing that the telephone poles the truck is passing are 25 m apart in this country. The bed of the truck is 1.5 m above the road, and Bond quickly calculates how many poles away the truck should be when he jumps down from the bridge onto the truck, making his getaway. How many poles is it?
Asked by DOn H - Wed Jan 30 17:28:28 2008 - - 1 Answers - 0 Comments
A. He needs to calculate how far the truck will travel in the time it takes him to drop 16.5 m. Acted upon only by the force of gravity, an object will accelerate downward at 9.81m/s . The relevant equation is s = ut + at /2 --- s = distance covered, t = time in seconds, a = 9.81m/s and u is the initial velocity (= 0m/s for a dropped object) rearranging and solving for t we have t = 2(s - 0)/a t = 2(16.5 - 0)/9.81 t = 1.83s Knowing he has 1.83 seconds to fall, our intrepid hero must "lead the truck" by the distance the truck will cover in that same time. 26m/s X 1.83s = 47.6m Assuming there's a pole very near the bridge, Bond must jump just after the truck has passed the second pole away. Got it? (Our guy is a wizard at mental… [cont.]
Answered by Catenary - Wed Jan 30 18:05:03 2008
What is/was the standard distance between telephone poles?
Q. I am building an HO-scale model railroad, modelling a rural area of the 1960s. What is, or was for that era, the standard distance in feet or yards between telephone poles?
Asked by jimthecelt - Fri Sep 28 01:41:09 2007 - - 3 Answers - 0 Comments
A. Bell Telephone Common Practices City telephone poles: 75 ft on street 40' poles 6' in ground. Tel cable 18' off ground additional 40 inch minimum clearance to electric lines. Rear yards: 30ft light duty poles. Usually every other yard. Cable height varies 12-18ft depending on power share requirements. Rural: 75-100 feet. Tel cable 18' off ground 40" clearance to electric lines. Poles by the Track There are 40 poles to the mile. Each 4 poles is a tenth mile.
Answered by Doc E - Fri Sep 28 01:58:33 2007
Q. I am building an HO-scale model railroad, modelling a rural area of the 1960s. What is, or was for that era, the standard distance in feet or yards between telephone poles?
Asked by jimthecelt - Fri Sep 28 01:41:09 2007 - - 3 Answers - 0 Comments
A. Bell Telephone Common Practices City telephone poles: 75 ft on street 40' poles 6' in ground. Tel cable 18' off ground additional 40 inch minimum clearance to electric lines. Rear yards: 30ft light duty poles. Usually every other yard. Cable height varies 12-18ft depending on power share requirements. Rural: 75-100 feet. Tel cable 18' off ground 40" clearance to electric lines. Poles by the Track There are 40 poles to the mile. Each 4 poles is a tenth mile.
Answered by Doc E - Fri Sep 28 01:58:33 2007
Is it legal to post signs on telephone poles?
Q. I have seen small signs for local busineses (like credit repair call this number etc.) posted on telephone poles etc.from time to time. I'd like to advertise my business this way as long as I'm not likely to get fined. How about sticking small signs into the ground on public property at intersections etc. like the politician do? Is this allowable to do? Thanks for your advice.
Asked by JDH - Sun Sep 16 14:54:46 2007 - - 3 Answers - 0 Comments
A. I also see these signs frequently in my town, but they are absolutely illegal, and many cities issue citations to companies that post and/or pay for posting of these signs. Check your city's municipal code, or state law. For example, I quickly found the law for San Francisco at and for Antioch, California at
Answered by Mark Welch - Sun Sep 16 15:23:03 2007
Q. I have seen small signs for local busineses (like credit repair call this number etc.) posted on telephone poles etc.from time to time. I'd like to advertise my business this way as long as I'm not likely to get fined. How about sticking small signs into the ground on public property at intersections etc. like the politician do? Is this allowable to do? Thanks for your advice.
Asked by JDH - Sun Sep 16 14:54:46 2007 - - 3 Answers - 0 Comments
A. I also see these signs frequently in my town, but they are absolutely illegal, and many cities issue citations to companies that post and/or pay for posting of these signs. Check your city's municipal code, or state law. For example, I quickly found the law for San Francisco at and for Antioch, California at
Answered by Mark Welch - Sun Sep 16 15:23:03 2007
Why are there gas cylinders chained to some telephone poles?
Q. Some telephone/power poles have compressed gas cylinders chained to them, as if they will be used at that location, but I can't figure out why an electrician would need compressed gas. Any ideas?
Asked by figaro1912 - Mon Jun 18 21:19:00 2007 - - 1 Answers - 0 Comments
A. That is zero-moisture nitrogen used to purge sealed cable conduits. Mositure eventually increases crosstalk among otherwise insulated wires.
Answered by Uncle Al - Mon Jun 18 21:23:33 2007
Q. Some telephone/power poles have compressed gas cylinders chained to them, as if they will be used at that location, but I can't figure out why an electrician would need compressed gas. Any ideas?
Asked by figaro1912 - Mon Jun 18 21:19:00 2007 - - 1 Answers - 0 Comments
A. That is zero-moisture nitrogen used to purge sealed cable conduits. Mositure eventually increases crosstalk among otherwise insulated wires.
Answered by Uncle Al - Mon Jun 18 21:23:33 2007
I'm making a poster to hang on telephone poles for lawnmowing?
Q. Ok, this summer I'm going to do some lawnmowing, tree trimming type stuff and I need to set up some posters around on telephone poles to let people know this. What should I Put on these posters? And what about money? should I set a fixed price, or a range, hourly rate, or let the customer set a price and we haggle? Thanks ahead of time Should I put an e-mail address in addition to phone number?
Asked by Abortion is MURDER - Tue Jul 15 19:02:21 2008 - - 4 Answers - 0 Comments
A. I think you should actually do some professional advertising like local tv and post ur ad in the newpapaers and etc. The posters that you hang up on the tele posts should have the name of ur company, telephone #, and etc. Especially put the signs up around neighborhoods and mostly expensive neighborhoods where very high class people stay..and tell all the knowsy people you know about ur service so they can tell other people and it can go on and on...
Answered by Cinnamon Doll - Tue Jul 15 19:12:05 2008
Q. Ok, this summer I'm going to do some lawnmowing, tree trimming type stuff and I need to set up some posters around on telephone poles to let people know this. What should I Put on these posters? And what about money? should I set a fixed price, or a range, hourly rate, or let the customer set a price and we haggle? Thanks ahead of time Should I put an e-mail address in addition to phone number?
Asked by Abortion is MURDER - Tue Jul 15 19:02:21 2008 - - 4 Answers - 0 Comments
A. I think you should actually do some professional advertising like local tv and post ur ad in the newpapaers and etc. The posters that you hang up on the tele posts should have the name of ur company, telephone #, and etc. Especially put the signs up around neighborhoods and mostly expensive neighborhoods where very high class people stay..and tell all the knowsy people you know about ur service so they can tell other people and it can go on and on...
Answered by Cinnamon Doll - Tue Jul 15 19:12:05 2008
Why don't they have electricity or telephone poles in Europe?
Q. I have been to most countries in Europe and never seen an electricity pole, transformer, or telephone or tv cables. What gives? Is this all due to Tesla's genius?
Asked by Pourlomatte - Wed May 27 00:11:21 2009 - - 5 Answers - 1 Comments
A. There are power and telephone poles and cables all over the place! I don't know where in europe you have been! True, in most major cities, the cables are underground, but that is because the cables aboveground would be too congested. Go to a smaller town or rural area. But not all cities. I remember trying to photograph the "Dancing building" in Prague, and couldn't find an angle that didn't include wires. .
Answered by billrussell42 - Wed May 27 07:55:04 2009
Q. I have been to most countries in Europe and never seen an electricity pole, transformer, or telephone or tv cables. What gives? Is this all due to Tesla's genius?
Asked by Pourlomatte - Wed May 27 00:11:21 2009 - - 5 Answers - 1 Comments
A. There are power and telephone poles and cables all over the place! I don't know where in europe you have been! True, in most major cities, the cables are underground, but that is because the cables aboveground would be too congested. Go to a smaller town or rural area. But not all cities. I remember trying to photograph the "Dancing building" in Prague, and couldn't find an angle that didn't include wires. .
Answered by billrussell42 - Wed May 27 07:55:04 2009
finding the tension in electrical wire between two telephone poles?
Q. (b) Suppose that a line were stretched almost perfectly horizontally between two poles that are 25 m apart. If a 0.29 kg bird perches on the wire midway between the poles and the wire sags 1.2 cm, what would be the tension in the wire?
Asked by J - Wed Jul 29 18:40:02 2009 - - 1 Answers - 0 Comments
A. Determine the sag angle: tan = 1.2x10^-2 / (25/2) = 0.096, = 5.48 deg. The vertical component of tension is due to the birds weight Tv = mg = 0.29(9.8) = 2.842 N Th horizontal component of tension: Th = Tv[tan5.48) = 2.842(0.096) = 0.27 N T = [ Th + Tv ] = [ 0.27 + 2.842 ] = 2.855 N
Answered by unknown - Wed Jul 29 19:27:08 2009
Q. (b) Suppose that a line were stretched almost perfectly horizontally between two poles that are 25 m apart. If a 0.29 kg bird perches on the wire midway between the poles and the wire sags 1.2 cm, what would be the tension in the wire?
Asked by J - Wed Jul 29 18:40:02 2009 - - 1 Answers - 0 Comments
A. Determine the sag angle: tan = 1.2x10^-2 / (25/2) = 0.096, = 5.48 deg. The vertical component of tension is due to the birds weight Tv = mg = 0.29(9.8) = 2.842 N Th horizontal component of tension: Th = Tv[tan5.48) = 2.842(0.096) = 0.27 N T = [ Th + Tv ] = [ 0.27 + 2.842 ] = 2.855 N
Answered by unknown - Wed Jul 29 19:27:08 2009
How many telephone poles are there in the US and how high ave?
Q. I'm trying to determine if wind turbines on light poles are feasible solutions thanks
Asked by Mike - Sat Jul 12 00:46:43 2008 - - 1 Answers - 0 Comments
A. There are millions of telephone poles usually about 70-100 feet high.
Answered by Pennsylvania - Sat Jul 12 01:01:10 2008
Q. I'm trying to determine if wind turbines on light poles are feasible solutions thanks
Asked by Mike - Sat Jul 12 00:46:43 2008 - - 1 Answers - 0 Comments
A. There are millions of telephone poles usually about 70-100 feet high.
Answered by Pennsylvania - Sat Jul 12 01:01:10 2008
How long to fiberglass telephone poles last?
Q. About how many years? Or do they last vertually forever unlike wood?
Asked by infinione - Sat Jun 21 14:31:53 2008 - - 3 Answers - 0 Comments
A. Fiberglass poles: overall weight is 1/3 that of wood, 2/3 that of steel, 1/8 that of concrete, with "up to" 80 years lifetime. Fiber-reinforced plastic typically uses polyester resin with fiberglass strands to make the material strong. The glass fibers will last a lifetime, but the resin may not. Polyester resin holds up well to UV light degradation/oxidation and is inexpensive, but eventually UV light will deteriorate the resin on the surface of the pole and weaken the pole. The lifetime of fiberglass poles is strongly dependent on how well the resin is protected from ultraviolet light - and the manufacturers of the pole know this. (There are alternative resins, but polyester is very good for price/performance). Their anti-UV… [cont.]
Answered by jimdempster - Sat Jun 21 16:19:50 2008
Q. About how many years? Or do they last vertually forever unlike wood?
Asked by infinione - Sat Jun 21 14:31:53 2008 - - 3 Answers - 0 Comments
A. Fiberglass poles: overall weight is 1/3 that of wood, 2/3 that of steel, 1/8 that of concrete, with "up to" 80 years lifetime. Fiber-reinforced plastic typically uses polyester resin with fiberglass strands to make the material strong. The glass fibers will last a lifetime, but the resin may not. Polyester resin holds up well to UV light degradation/oxidation and is inexpensive, but eventually UV light will deteriorate the resin on the surface of the pole and weaken the pole. The lifetime of fiberglass poles is strongly dependent on how well the resin is protected from ultraviolet light - and the manufacturers of the pole know this. (There are alternative resins, but polyester is very good for price/performance). Their anti-UV… [cont.]
Answered by jimdempster - Sat Jun 21 16:19:50 2008
What kind of tree's are telephone poles made from?
Q. I was curious to know if they have a specific type, height, etc...This came to mind when I was stuck in traffic the other day and they were replacing one that had been destroyed by a car accident. Any ideas??
Asked by juliegallagher1977 - Sat Feb 10 22:37:25 2007 - - 5 Answers - 0 Comments
A. Most are cedar. "Utility poles are divided into ten classes, from 1 to 10. The classes' definition specifies a minimum circumference that depends on the species of tree and the length of the pole. This circumference is measured 6 feet from the butt of the pole. There is also a minimum top circumference that is the same for all species and lengths. For example, a class 1 pole has a minimum top circumference of 27 inches. If it is 25 feet long and cedar (most utility poles are cedar), the circumference measured 6 feet from the bottom must be at least 43.5 inches. The higher the class number, the skinnier the pole. Pole lengths start at 16 feet and increase by 2-foot steps to 22 feet, then by fives from 25 feet to 90 feet. A 90-foot class… [cont.]
Answered by ambernpeach - Sat Feb 10 22:58:39 2007
Q. I was curious to know if they have a specific type, height, etc...This came to mind when I was stuck in traffic the other day and they were replacing one that had been destroyed by a car accident. Any ideas??
Asked by juliegallagher1977 - Sat Feb 10 22:37:25 2007 - - 5 Answers - 0 Comments
A. Most are cedar. "Utility poles are divided into ten classes, from 1 to 10. The classes' definition specifies a minimum circumference that depends on the species of tree and the length of the pole. This circumference is measured 6 feet from the butt of the pole. There is also a minimum top circumference that is the same for all species and lengths. For example, a class 1 pole has a minimum top circumference of 27 inches. If it is 25 feet long and cedar (most utility poles are cedar), the circumference measured 6 feet from the bottom must be at least 43.5 inches. The higher the class number, the skinnier the pole. Pole lengths start at 16 feet and increase by 2-foot steps to 22 feet, then by fives from 25 feet to 90 feet. A 90-foot class… [cont.]
Answered by ambernpeach - Sat Feb 10 22:58:39 2007
There's a weed in my back yard that wraps itself around plants, shrubs, telephone poles, anything it can reach
Q. . There MUST be something off the wall I can do to it after I cut it near the ground, something I can put on the exposed root to kill it once and for all. Any unique suggestions, please?
Asked by Robert R - Sat May 24 21:33:10 2008 - - 3 Answers - 0 Comments
A. My grandmother used to pour amonia on weeds she wanted to kill.
Answered by vexingconfection - Sat May 24 21:56:45 2008
Q. . There MUST be something off the wall I can do to it after I cut it near the ground, something I can put on the exposed root to kill it once and for all. Any unique suggestions, please?
Asked by Robert R - Sat May 24 21:33:10 2008 - - 3 Answers - 0 Comments
A. My grandmother used to pour amonia on weeds she wanted to kill.
Answered by vexingconfection - Sat May 24 21:56:45 2008
Are there dangers in breathing the fumes from stored telephone poles ?
Q. I work at a senior housing community in New York State, there is a electric co-op adjoining our property that has about 50 new poles stored in there yard. On hot days the odor coming from the poles is noticeable. my question is are ther dangers associated with breathing these odors ???
Asked by rick37us - Wed Jun 10 12:43:47 2009 - - 3 Answers - 0 Comments
A. There are far more dangers associated with the chemicals emitted from new car interiors, new carpet and furniture in homes, new clothing, and pet dander. I would also assume that breathing the odors generated within senior housing facilities would pose significantly higher health problems since, statistically, the residents die at an alarming rate compared to the general population.
Answered by Heli56 - Wed Jun 10 12:56:06 2009
Q. I work at a senior housing community in New York State, there is a electric co-op adjoining our property that has about 50 new poles stored in there yard. On hot days the odor coming from the poles is noticeable. my question is are ther dangers associated with breathing these odors ???
Asked by rick37us - Wed Jun 10 12:43:47 2009 - - 3 Answers - 0 Comments
A. There are far more dangers associated with the chemicals emitted from new car interiors, new carpet and furniture in homes, new clothing, and pet dander. I would also assume that breathing the odors generated within senior housing facilities would pose significantly higher health problems since, statistically, the residents die at an alarming rate compared to the general population.
Answered by Heli56 - Wed Jun 10 12:56:06 2009
What is in the 'bucket' on the telephone poles?
Q. Please provide links to back up the explanation! I looked online but couldn't find it.
Asked by Blue - Fri May 23 14:16:27 2008 - - 4 Answers - 0 Comments
Q. Please provide links to back up the explanation! I looked online but couldn't find it.
Asked by Blue - Fri May 23 14:16:27 2008 - - 4 Answers - 0 Comments
I'm writing a paper about community organizing. What do they do besides staple posters on telephone poles?
Q. Do you think there might be some work setting up folding chairs for bingo night as well? Thanks I need ideas, as I have said, it's for a paper.
Asked by Deek - Wed Aug 20 15:28:32 2008 - - 5 Answers - 0 Comments
A. You forgot the bull horn on the street corner and the serving of stale donuts at the community center.
Answered by Fletcher t - Wed Aug 20 15:32:57 2008
Q. Do you think there might be some work setting up folding chairs for bingo night as well? Thanks I need ideas, as I have said, it's for a paper.
Asked by Deek - Wed Aug 20 15:28:32 2008 - - 5 Answers - 0 Comments
A. You forgot the bull horn on the street corner and the serving of stale donuts at the community center.
Answered by Fletcher t - Wed Aug 20 15:32:57 2008
Why do people hang their shoes on telephone poles?
Q. Some say the reason's because they're selling drugs.
Asked by lonelydove5081990 - Mon Dec 1 12:40:36 2008 - - 11 Answers - 0 Comments
A. In the Army, it was a tradition that when someone was getting out of the Army, they were supposed to tie their combat boots together and throw them on a telephone pole. No, I didn't do that with mine, I was just happy to get out.
Answered by Openly Straight - Mon Dec 1 12:47:28 2008
Q. Some say the reason's because they're selling drugs.
Asked by lonelydove5081990 - Mon Dec 1 12:40:36 2008 - - 11 Answers - 0 Comments
A. In the Army, it was a tradition that when someone was getting out of the Army, they were supposed to tie their combat boots together and throw them on a telephone pole. No, I didn't do that with mine, I was just happy to get out.
Answered by Openly Straight - Mon Dec 1 12:47:28 2008
I have noticed small businesses advertising on telephone poles, is this legal?
Q. To be more descriptive, the signs I have noticed are made of that corrugated plastic. If they are allowed, are there any limitations, such as only posting on poles that are on your property (even if the municipality does own them) Im just asking because I own my own business and am looking into alternative advertising ideas
Asked by Brian M - Thu Jun 11 18:53:08 2009 - - 3 Answers - 0 Comments
A. Actually I know some places are indeed off limits , you would have to call your city hall or whatever you call them they are allowed to tell you. of check online for example some ask this their city had replies on the site
Answered by meme - Sun Jun 14 00:54:14 2009
Q. To be more descriptive, the signs I have noticed are made of that corrugated plastic. If they are allowed, are there any limitations, such as only posting on poles that are on your property (even if the municipality does own them) Im just asking because I own my own business and am looking into alternative advertising ideas
Asked by Brian M - Thu Jun 11 18:53:08 2009 - - 3 Answers - 0 Comments
A. Actually I know some places are indeed off limits , you would have to call your city hall or whatever you call them they are allowed to tell you. of check online for example some ask this their city had replies on the site
Answered by meme - Sun Jun 14 00:54:14 2009
Shoes hanging from the telephone poles, and wires; what does it mean?
Q. I am very curious, why do people throw shoes onto telephone and light posts. Does it represent anything?
Asked by Blah Blah Blah - Sat Oct 14 16:29:54 2006 - - 8 Answers - 1 Comments
A. I think the easiest way to explain it is someone saying goodbye to walking in those shoes. For example, my exhusband was in the Army, and whenever I went to the military base, I would see Combat Boots hanging from the telephone wires, he told me that the guys that were getting out (leaving the military) threw them up there as a final goodbye because they won't ever be wearing those boots again. Hope that helps
Answered by jemmy - Sat Oct 14 16:34:01 2006
Q. I am very curious, why do people throw shoes onto telephone and light posts. Does it represent anything?
Asked by Blah Blah Blah - Sat Oct 14 16:29:54 2006 - - 8 Answers - 1 Comments
A. I think the easiest way to explain it is someone saying goodbye to walking in those shoes. For example, my exhusband was in the Army, and whenever I went to the military base, I would see Combat Boots hanging from the telephone wires, he told me that the guys that were getting out (leaving the military) threw them up there as a final goodbye because they won't ever be wearing those boots again. Hope that helps
Answered by jemmy - Sat Oct 14 16:34:01 2006
Are there any companies in Las Vegas, NV that make and hang posters on telephone poles?
Q. Is hanging them on utility poles legal or illegal here?
Asked by Custodial_Engineer - Wed Jul 23 19:06:15 2008 - - 2 Answers - 0 Comments
A. about the only posters on telephone poles here are either pooper scooper services or the we buy houses posters. very trashy and not knowing if they are legal, you'd better check before you put your name and phone # on them.
Answered by HD - Thu Jul 24 12:31:09 2008
Q. Is hanging them on utility poles legal or illegal here?
Asked by Custodial_Engineer - Wed Jul 23 19:06:15 2008 - - 2 Answers - 0 Comments
A. about the only posters on telephone poles here are either pooper scooper services or the we buy houses posters. very trashy and not knowing if they are legal, you'd better check before you put your name and phone # on them.
Answered by HD - Thu Jul 24 12:31:09 2008
There are so many nails in some telephone poles, you can hardly see the wood anymore - what would happen if?
Q. a significant number of the nails were pulled from where all those signs had been tacked onto the pole?
Asked by Hope - Wed Feb 20 20:03:00 2008 - - 2 Answers - 0 Comments
A. Then you would have a telephone pole full of nail holes.
Answered by ScSpec - Wed Feb 20 20:06:13 2008
Q. a significant number of the nails were pulled from where all those signs had been tacked onto the pole?
Asked by Hope - Wed Feb 20 20:03:00 2008 - - 2 Answers - 0 Comments
A. Then you would have a telephone pole full of nail holes.
Answered by ScSpec - Wed Feb 20 20:06:13 2008
Aside from posting a few flyers on telephone poles in Chicago, what EXACTLY has Obama accomplished?
Q. REAL accomplishments, that is. chiquita - I said accomplishments, not a biography! JAVA - Great point!
Asked by CINCSAC - Fri Jul 4 20:26:03 2008 - - 8 Answers - 0 Comments
A. not a damn thing Obama is an idot.
Answered by UGA go dawgs - Fri Jul 4 20:31:48 2008
Q. REAL accomplishments, that is. chiquita - I said accomplishments, not a biography! JAVA - Great point!
Asked by CINCSAC - Fri Jul 4 20:26:03 2008 - - 8 Answers - 0 Comments
A. not a damn thing Obama is an idot.
Answered by UGA go dawgs - Fri Jul 4 20:31:48 2008
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