Watts Definition and 143 Threads

Watts is a neighborhood in southern Los Angeles, California. It is located within the South Los Angeles region, bordering the cities of Lynwood and South Gate to the east and southeast, respectively, and the unincorporated community of Willowbrook to the south.
Founded in the late nineteenth century as a ranching community, the arrival of the railroads and the construction of Watts Station saw the rapid development of Watts as an independent city, but in 1926 was consolidated with Los Angeles. By the 1940s, Watts transformed into a primarily working class African-American neighborhood, but from the 1960s developed a reputation as a low-income, high-crime area, following the Watts riots and the increasing influence of street gangs. Watts has become a predominantly Hispanic neighborhood with a significant African American minority, and remains one of the most impoverished neighborhoods in Los Angeles despite falling crime rates since the 1990s. Notable civic activities by residents of Watts include the "Toys for Watts" toy drive, the Watts Christmas parade, and the "Watts Summer Games" athletic tournament, as well as a local theatre and a dance company, in an effort to improve the neighborhood.Watts is noted internationally for the landmark Watts Towers by Simon Rodia, which are a Los Angeles Historic-Cultural Monument and also listed on the National Register of Historic Places. The neighborhood has also been featured or referenced in numerous forms of media, particularly West Coast hip-hop music, and movies and television shows set in Los Angeles.

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  1. C

    Converting kg cal/hour into Watts?

    converting kg cal/hour into Watts? As the title suggests how should I go about converting kg cal/hour into Watts? Thanks
  2. B

    Calculating watts per square foot

    I am working on a project to consider how much air conditioning in a metropolitan area raises the temperature outside. I am trying to figure out how to translate the temperature outdoors (say 32 degrees C) into watts per square foot. Once I have the watts per square foot of heat already in the...
  3. R

    If I install stronger PC power supply in terms of watts

    ...than my current unit,is there danger that some component in my PC will be destroyed?
  4. R

    2 questions: dimensions and watts

    Homework Statement Hello, I am having some trouble with the two questions below: 1) The University of Maryland's mascot is a terrapin (a snapping turtle). It is represented on campus by a bronze statue in front of the library named Testudo. Unfortunately, students rub his nose for luck on...
  5. W

    Express your answer in Watts and horsepower

    Homework Statement What is the power output of a bodybuilder who raises 150kg from the ground to a height of 2.2m in 1.3 seconds? Express your answer in Watts and Horsepower (1hp=746w) Homework Equations show me how to do this problem The Attempt at a Solution show me how to do...
  6. B

    What Output Rating (Watts) Do I Need for a Pump to Lift 8kg of Water per Minute?

    Homework Statement A pump is to lift 8.00 kg of water per minute through a height of 3.50 m. What output rating (watts) should the pump motor have? Homework Equations The Attempt at a Solution I have no idea how to even start.
  7. B

    Calculating Watts to Air Temperature Rise in a Given Area

    Hi All, Could someone please help me with the calculations & an example of Watts consumed to Air Temperature rise in a given area: Eg: If we have a closed sealed container with no outside influences of area say 1 cubic meter, well insulated with an electrical heat source of the best...
  8. S

    What is the Energy Produced by a 55 Gallon Barrel of Air at 500ft Depth?

    Hi all, This is not homework, just theory discussion with my son. My son has been asking some interesting questions with regard to displacement as it relates to water. All kinds of teenager, “what if” stuff. I have looked around for simple formulas, but I am not embarrassed to say, I do not...
  9. tony873004

    Solving Watts Units: V/m From H/m, m/s, W/m^2

    Help with units The book gives the following forumla E_0 = \sqrt {2\mu _0 c\left\langle S \right\rangle } And when it uses it in an example, the units go from: \sqrt {\left( {{\rm{H/m}}} \right)\left( {{\rm{m/s}}} \right)\left( {{\rm{W/m}}^{\rm{2}} } \right)} to V/m, with no intermediate...
  10. S

    Kelvin & Watts: Light Penetration Explained

    Hi, I have a question regarding light, specifically artificial light. Please forgive me I am not a physics guru by any means and my terminology may be completely wrong, but hopefully someone will be able understand what I am trying to ask. First, the only way I know how to ask is in basic...
  11. I

    What resistor wattage should I use for a load of 100ma to keep contacts clean?

    I have an oven and the heater element is ran by a watlow controller. It is going out evey two or three years. The watlow controller runs a relay to turn element on and off. The relay on the watlow needs a load of 100ma min. to keep contacts clean. I have the resistance of the coil for the on off...
  12. Ed Aboud

    How do you convert watts per meter squared to decibels?

    Hi. How do you convert watts per metre squared to decibels? I know you use logs but can't seems to work it out. Thanks for any help.
  13. T

    How do I calculate the cooling effect in Watts?

    Shown in the attachment is a system consisting of a heat pump and other components. My question is how I can approximate the total cooling effect in Watts available to the cooling battery. I know that the ground water is about 5 degrees, and I have some other data as well, just shout as I'm not...
  14. A

    Can Watts Be Converted into Ohms?

    Homework Statement how do you convert watts into ohms? Homework Equations The Attempt at a Solution
  15. L

    Why Is My Joules Calculation Incorrect?

    Homework Statement A steam iron draws 8.0 A when connected to a potential difference of 120 V. (a) What is the power rating of this iron? 960 W <<<<correct (b) How many joules of energy are produced in 20.0 min? 320 J <<<incorrect why? (c) How much does it cost to run the iron for...
  16. B

    Calculating Watts in a Day/Second for Lamp with 60W Capacity

    Hello, I'm having problems with this question. I'm not exactly sure how to determine how much watts in a day, or in a second the lamp takes. Homework Statement Theres a lamp that absorbs 60 W when connected to a 120-V source. Q: Find the cost of operating the lamp for 24 hrs when...
  17. S

    How Do You Convert Daily Caloric Intake to Watts?

    [SOLVED] converting calories to watts HELP please I've tried this problem six times and this is what I keep coming up with. Any help would be greatly appreciated. I realize this is a very simple simple problem but why this is not working for me I do not know. Again Thank You very much for...
  18. D

    Convert Watts to Kelvins on Steel Plate: 850 Sunlight Spots

    How might i convert the temperature in kelvins of a 1/2inch 2" x 2" steel plate when i have 28322 watts of sunlight focused on it for 5min? also if i am stating this question wrong i will be focusing 850 2" x 2" spots of sunlight on a single 2" x 2" surface how might i calculate the temperature...
  19. C

    How Long to Melt an Ice Cube in a Microwave with 104 Watts?

    An ice cube is placed in a microwave oven. Suppose the oven delivers 104 W of power to the ice cube and that it takes 32165 J to melt it. How long does it take for the ice cube to melt? Following my lecture notes and my textbook ... the formula should be t=(J/W), but that isn't giving me...
  20. D

    How to calc human bicycle power in watts

    Homework Statement How to calculate Lance Armstrongs power output/calorie consumption at 30 mph, 125 miles on level ground , no wind, 157 lbs plus 16lb bike? Homework EquationsWhat equations do I use? The Attempt at a Solution I'm 14 years old, where do I start
  21. GarageTinker

    Conversion of Dissipated Heat in Watts to °F or °C (Part 2)

    Hello All, This is an edited re-posting. I am looking for verification on a formula. As part of a personal design project (not for school or homework) I’m designing coils of magnet wire (i.e. coils in a generator) and I have all of the computational resources I need, with the exception of a...
  22. D

    Lux Lumens and Watts per square meter

    Homework Statement I am looking for a conversion factor that will ultimately get me from units of lux (illumination) which is a weighted scale of light intensity, to watts per square meter, which is not weighted. Homework Equations None availiable The Attempt at a Solution I am...
  23. GarageTinker

    Conversion of Dissipated Heat in Watts to °F or °C

    Greetings All, I'm restarting a personal project (after having to put it on hold) involving magnetically induced electricity and I'm trying to stay within the wire manufacturer temperature tolerance specs. I know the formula (P = I^2*R) for figuring out how much heat will be dissipated by a...
  24. M

    Colombs,Amps,Volts,and Watts. HELP

    Colombs,Amps,Volts,and Watts. HELP! Homework Statement A given car battery is rated at 250 amp-hours. Does this rating indicate the amount of energy, power, charge, voltage, or current that can be drawn from the battery? Explain. Homework Equations Coulombs, Amps, Volts, Watts. The...
  25. T

    X Watts to run = x Watts of heat?

    If some appliance needs let's say 500 Watts to run, does that automatically mean that it also produces 500 Watts worth of heat to its surroundings? Or would that be an indication that it's hopelessly inefficient?
  26. W

    Converting Watts to Ohms: How to Calculate Resistance from Power and Temperature

    Homework Statement A 20 ohm platinum wire at 20 C with a temperature coefficient of resistivity of 3.9 x 10 ^-3 /C will have what resistance at 100 C? I know how to answer this in watts and I get 26 W, but for some reason my only options are in ohms. how do i convert Watts to ohms? i...
  27. F

    Passive sign convention (negative watts, and negative current confusion)

    This is my (error full?) understanding from my readings: 1. positive current flowing into a positive terminal of let's say a rechargeable battery is power being absorbed by the battery...so positive watts 2. negative current flowing into a positive terminal encounters the higher electrical...
  28. dontdisturbmycircles

    Can you measure watts through heat?

    I am in grade 11 physics and haven't yet learned about thermodynamics or anything dealing with heat really. I am wondering basically if you can reliably measure the power difference between two settings on a stove through temperature. i.e use a thermometer, measure the temp of the element at...
  29. W

    How Long to Heat 250g of Water with a 250-Watt Heater?

    Homework Statement its a long story problem so ill break it down: an electric heater generates 250 Watts of electricity, how long will it take for 250 grams of water to heat from 20 C to 80 C The Attempt at a Solution so 80 C - 20 C = 60 C , i have to heat it 60 C 250 grams of water...
  30. W

    Amount of watts needed to heat water

    I have a problem where I have a cup of water and I have to find out how much power I need to generate to heat it by a certian amount. I can't seem to find the equation I need in my book, can someone help me out? thanks.
  31. C

    How many watts does the human body use

    how many watts does the human body use i guess 500w
  32. W

    Calculate Average Power: 60kg Woman Running Up 4m Stairs in 6s

    not sure how to solve this, having trouble finding the equation I need in my book. any help is appreciated. thanks in advance. A 60 kg woman runs up a flight of stairs having a rise of 4.0 m in a time of 6.0 s. What average power did she supply?
  33. N

    Connect the two amplifiers to give me 1100 watts

    hi can i connect two amplifires to one speaker. i have sony amplifire 500 watts and JBL amplifire 600 watts. and two speakers 800 watts. Q i want to connect the two amplifires to give me 1100 watts to look like one amplifire. thanx
  34. wasteofo2

    Does the average person run on 96.85 watts?

    I tried to figure out how many watts a person runs on who eats a 2,000 calorie diet. First, dietary calories are really kilocalories, so someone eating a 2,000 calorie diet is really eating 2,000,000 calories. 1 calorie is 4.184 joules, so multiply 2 million by 4.184 and you get 8,368,000...
  35. H

    Output rating of the pump motor in watts

    -------------------------------------------------------------------------------- A pump is to lift 29.0 kg of water per minute through a height of 3.70 m. What output rating (watts) should the pump motor have? An airplane pilot fell 380 m after jumping without his parachute opening. He...
  36. F

    Solving the Puzzle: Calculating Watts of "Wonderland's Watt

    hi, i have another question i can't get, the problem is: We want to boil one liter of water in a light thin-walled vessel. For this purpose, we start to heat water by an electric heater, with the label "500W. Made in Wonderland". However, after the temperature becomes 60*C, it stops...
  37. P

    Calculating Time to Lift 300kg Piano 10 Meters with 400 Watts Power

    I have a 300 kg piano being lifted at a steady speed from the ground to a hieght of 10 meters and the crane that is doing the lifting is providing 400 watts of power. How much time does it take to get the piano to the top. So far I have Power = work/Time so time is Work/ power , so, work is...
  38. Pengwuino

    Understanding the Confusion: Watts vs. Watts per Hour?

    I thought watts was defined as J/sec . So how can something be rated in watts/hour? Doesnt that mean Joules per second per hour?
  39. tony873004

    How Do Meters, Kelvins, and Watts Relate in This Equation?

    Units -- Watts, meters & Kelvin I have an equation: L = \sigma T^{4} * 4 \pi R^{2} Which I fill with values and units L=5.67*10^{-8} * (5860K)^{4} * 4 \pi * (6.96*10^{8}m)^{2} and I get an answer: 4.07*10^{26} K^{4} m^{2} The correct answer is: 4.07*10^{26} watts I don't...
  40. K

    Watts per Square Meter: Learn the Basics

    Watts per squ meter?
  41. E

    What is RMS Watts? Understanding AC Signals & DC Conversion

    Root mean square. The square root of the sum of the squares of a set of quantities divided by the total number of quantities. Used when monitoring ac (alternating current) signals. Many power supplies, for example, issue an ac signal. This needs to be converted to a dc (direct current) signal...
  42. S

    Calculating Pump Motor Output: Where Did I Go Wrong?

    A pump is to lift 16.0 kg of water per minute through a height of 3.38 m. What output rating (watts) should the pump motor have? Potential Energy Initial = O Kenetic Energy Final = 0 So, KE-PE = W 1/2mv^2 - mgh = Work 1/2(16.0)(3.38)^2 - (16.0)(9.8)(3.38) = -439 W The fact that my...
  43. S

    How Do You Convert Watts into Kilowatt Hours?

    Let's say, for example, that I have a common household item that is 6amps, being run from a 12v circuit, like a car battery. That would make the wattage 72, correct? What is the time frame on that? Is that 72 watts an hour? a minute? Basically, how do I convert that number, 72watts, into a...
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