Friday
April 18, 2014

Search: LAMP

Number of results: 336

Physics
A 100 W lamp is connected to 120 V, and its current is measured. A resistor is added to the lamp to reduce the current to half its original value. (a) What is the potential difference across the lamp? (b) How much resistance was added to the circuit? (c) How much power is now ...
Sunday, April 14, 2013 at 9:55pm by Billy

Physics
(a) The original current through the lamp was Io = P/V = 0.833 A. The lamp filament resistance is R = V/Io = 128.6 ohms. Then an additional series resistance R' is added to the lamp to reduce the current in half. Assuming that the lamp filament resistance R remains the same (...
Sunday, April 14, 2013 at 9:55pm by drwls

Math 8R - HELP!!!!!
Mr. Martanarie bought a new lamp and lamppost for his home. The pole was 6 5/8 ft tall and the lamp was 1 1/4 ft in height. How tall were the lamp and post together?
Thursday, September 27, 2012 at 7:37pm by Laruen

physics
The lowest resistance in a common electric circuit containing a common lamp is in which of these A) connecting wires.B) Both of these.C) Neither of these.D) lamp filament. I would say lamp filament is this correct?
Saturday, April 14, 2012 at 3:41pm by Christy

Physics
The power that a lamp produces is P = V^2/R Since both lamp blubs are made to operate at the same voltage V, the lamp with more power must have a lower value of R. In this case,the 100W bulb has 1/4 the resistance of the 25W bulb.
Friday, October 26, 2007 at 2:51pm by drwls

physics
A 37 ohm lamp and a 59 ohm lamp are connected in series and placed across a potential of 43 V. What is the equivalent resistance of the circuit? What is the current in the circuit? Answer in units of A. What is the voltage drop across the first lamp? Answer in units of V. What...
Wednesday, April 27, 2011 at 8:48pm by Leslie

physics
A lamp which is 9.0 cm tall is in front of a concave mirror which has a focal length of 53.0 cm. (a) How tall is the lamp's image if the lamp is a distance of 26.5 cm from the mirror (include sign if negative)? (b) How tall is the lamp's image if the lamp is a distance of 63.6...
Thursday, January 17, 2013 at 6:37pm by m

physics
There are electrons in the filament of the ac lamp in your bedroom. When you turn on the lamp and it glows, the glowing comes from A) the positive charges that flow in the filament.B) the same electrons.C) different electrons; the ones that flow in the circuit to your lamp
Friday, April 13, 2012 at 1:44pm by Jim

physics
There are electrons in the filament of the ac lamp in your bedroom. When you turn on the lamp and it glows, the glowing comes from A) the positive charges that flow in the filament.B) the same electrons.C) different electrons; the ones that flow in the circuit to your lamp
Saturday, April 14, 2012 at 12:32pm by Jim

Physics
A 37 ohm lamp and a 59 ohm lamp are connected in series and placed across a potential of 43 V. What is the equivalent resistance of the circuit? Answer in units of ohm. What is the current in the circuit? Answer in units of A. What is the voltage drop across the first lamp? ...
Thursday, April 28, 2011 at 1:28am by Maria

LAMP?? Physics?
Is LAMP possibly Liberal Arts and Management Program at Indiana U.?
Saturday, September 5, 2009 at 4:50pm by Ms. Sue

physics 102
three lamps connected to a 120-V AC (rms) household supply voltage. Lamps 1 and 2 have 75.0-W bulbs; lamp 3 has a 40.0-W bulb. (a) For each bulb, find the rms current. Irms, lamp 1 = A Irms, lamp 2 = A Irms, lamp 3 = A (b) For each bulb, find the resistance. Rlamp 1 = Ω ...
Thursday, August 9, 2012 at 5:50pm by Matt Will

Math
For 5 consecutive days, the price of a lamp in jill's store is reduced by 10% from the previous day's price. At the end of the fifth day, by what percetage will the price of the lamp have been reduced from its initial price? I'm not sure where to begin since I don't know what ...
Wednesday, February 10, 2010 at 4:39pm by Joe

science
Minska has a problem. When she turns on a lamp, the lamp doesn't light. She wonders if the lamp is plugged into the outlet. She checks the outlet and discovers that it is plugged in. Which stage of the scientific method is Minska in when she looks at the outlet? a) a problem ...
Monday, September 6, 2010 at 9:09am by ant

science
Minska has a problem. When she turns on a lamp, the lamp doesn't light. She wonders if the lamp is plugged into the outlet. She checks the outlet and discovers that it is plugged in. Which stage of the scientific method is Minska in when she looks at the outlet? a) a problem ...
Monday, September 6, 2010 at 10:43am by ant

English
"I have but one lamp by which my feet are guided; and that is the lamp of experience." This is an example of a. an appeal to authority b. allusion c. conceit d. logic C? Thanks
Friday, May 18, 2012 at 5:57pm by mysterychicken

physics
An electrical source with internal reistance r is used to operate a lamp of resistance R. What fraction of the total power is delivered to the lamp?(a)R+r/R(b)R-r/R (c)R/R+r (d)R/r
Sunday, September 15, 2013 at 8:38am by Roy

science
Minska has a problem. When she turns on a lamp, the lamp doesn't light. She wonders if the lamp is plugged into the outlet. She checks the outlet and discovers that it is plugged in. Which stage of the scientific method is Minska in when she looks at the outlet? a) a problem ...
Monday, September 6, 2010 at 1:03pm by Happy Labor Day!!!!

physics
A 50 ohm lamp and a 10 ohm electric iron are connected in series to a generator delivering 120 V. The current through the lamp and the iron is ___ The voltage ccross the lamp is ___ The voltage drop acrowss the iron is ___ How do I set these up? Thank you.
Wednesday, May 18, 2011 at 5:20pm by Kriti

FSK 114 (PHYSICS)
A LARGE BOWL CONTAINS WATER 10cm DEEP AND HAS A SMALL ELLECTRIC LAMP AT THE BOTTOM.A DISC OF CARDBOARD IS FLOATING ON THE SURFACE WITH ITS CENTRE VERTICALLY ABOVE THE LAMP, AND IS OF SUCH DIAMETER THAT THE LAMP CAN JUST NOT BE SEEN BY A PERSON LOOKING INTO THE WATER. CALCULATE...
Wednesday, April 13, 2011 at 2:33pm by Limema

physics
You have aready stated that the current through the LAMP is 0.625 A. If the microwave is some other part of the circuit, it will have the same current if it is in series wth the lamp. If it is in parallel wth the lamp, you need to tell us more about the circuit, including the ...
Saturday, May 3, 2008 at 5:08pm by drwls

Physics - electricity
An incandescent lamp is marked '120v,75W' a)what is the current in the lamp under normal condition of operation? b)How much does it cost per hour to operate the lamp if the price of electrical energy is $6.00 per unit? Please stop posting under different names. Use ohms law, ...
Tuesday, April 17, 2007 at 10:42am by Charles

Physics
I doubt it. Yes, the lamp is using energy. However, there are other factors: is the Lamp LED or light bubls. LED's use very little power. Air and road friction is probably a much greater factor in energy usage than the lamp, especially if it is LED. If the tires are poorly ...
Wednesday, March 30, 2011 at 5:30pm by bobpursley

ipc
investigate and compare economic and environmental impacts of incandescent light bulbs versus the various fluorescent lamps, solar lamp, and oil burning lamp or candles.
Wednesday, April 13, 2011 at 12:42pm by poo

physics 102
The lamps are in parallel and all have an applied voltage of 120 V (rms) (a) Irms = P/V where P is the lamp power rating in Watts. (b) V^2/R = P for each lamp R = V^2/P = 1.44*10^4/P ohms
Thursday, August 9, 2012 at 5:50pm by drwls

Physics
A 100-watt lamp glows brighter than a 25-watt lamp. What do you know about the resistances of these two lamps?
Monday, June 24, 2013 at 6:47pm by Anonymous

physics
What is the total resistance in a parallel circuit with a 10 ohm lamp and a 15 ohm lamp?
Monday, May 24, 2010 at 5:52pm by maryanne

math
if you are 6 ft tall and cast a 90" shadow and are standing 70" from a lamp how tall is the lamp
Sunday, November 4, 2012 at 1:20am by karin

math
if you are 6 ft tall and cast a 90" shadow and are standing 70" from a lamp how tall is the lamp
Sunday, November 4, 2012 at 1:21am by karin

Science please help!
A lamp connected to a battery lights up. If a second, identical lamp is connected to the battery in parallel, the current drawn from the battery will _____ , and compared to the original brightness of the first lamp, both lamps will be _____ . will the current increase and ...
Saturday, May 12, 2012 at 4:52pm by matthew

physics
A 75.0-W lamp is placed in series with a resistor and a 120.0-V source. If the voltage across the lamp is 24 V, what is the resistance R of the resistor?
Tuesday, October 11, 2011 at 1:54pm by ashley

math
A girl 1.6 m tall, stands 3.6 m from a lamp post at night. Her shadow from the light is 0.9m long. How high is the lamp post?
Wednesday, March 20, 2013 at 7:10pm by Chris

Physics
A 100 watt lamp glows brighter than a 25 watt lamp. What do you know about the resistences of these two lamps. How can you increase their power.
Saturday, April 4, 2009 at 2:29pm by Michael

Science
A lamp is suspended by a massless string from the ceiling of a descending elevator which decelerates at 1.6 m/s2. If the tension in the string is 82.0 N, what is the mass of the lamp?
Tuesday, October 25, 2011 at 9:40pm by Mark

math
A man is 6ft tall is standing 10 feet from the base of a lamp post. The mans shadow has a lenght of 4ft . How tal is he lamp post
Monday, January 31, 2011 at 5:37pm by jake

Physics
A street lamp weighs 150 N. It is supported by two wires that form an angle of 100° with each other. The tensions in the wires are equal. (a) What is the tension in each wire supporting the street lamp? (b) If the angle between the wires supporting the street lamp is reduced ...
Saturday, November 17, 2012 at 5:53pm by Lyna

MATH
- A & B cross the bridge (2 minutes) - A go back with the lamp (1 minute) - C & D cross the bridge with lamp (10 minutes) - B go back with the lamp (2 minutes) - A & B cross the bridge with lamp(2 minutes
Monday, June 9, 2008 at 8:40am by bobpursley

CALCULUS
A cat walking down the street at a speed of 1 1m/s passes 2 m from a post on which there is a lamp 6 m above the ground. How fast is the distance between the cat and the lamp increasing 3 s later?
Monday, April 15, 2013 at 4:34pm by rim

Physical Science
Turn an incandescent lamp on and off quickly while you are standing near it. You feel it's heat, but you find when you touch the bulb that it is not hot. Explain why you felt the heat from the lamp?
Monday, March 10, 2008 at 6:12pm by Rachel

Math (grade 10)
On the design plan for a garden, a straight path suns from (-25,20) to (40,36). A lamp is going to be placed at the midpoint of the path. Determine the coordinates for the lamp.
Monday, May 28, 2012 at 6:12pm by Shellie

math
if you are 6 ft tall and cast a 90" shadow and are standing 70" from a lamp how tall is the lamp someone helped with this earlier (steve) but I still don't understand how you got your answer...can you please explain further?
Sunday, November 4, 2012 at 2:16am by karin

Physics
A lamp fimament is made of tungsten. Why do we get a continuous spectrum rather than a tungsten line spectrum when light from an incandescent lamp is viewed with a spectroscope?
Thursday, March 27, 2008 at 11:42pm by Leigh

Physic
A lamp filament is made of tungsten. Why do we get a continuous spectrum rather than a tungsten line spectrum when light from an incandescent lamp is viewed with a spectroscope?
Tuesday, December 11, 2012 at 11:09pm by shelly

physics
A lamp is moved from 26 cm to 90 cm above the pages of a book. Compare the illumination on the book before and after the lamp is move.
Monday, May 12, 2008 at 8:23pm by marc

math
A woman 5 ft tall is standing near a street lamp that is 12 ft tall. Find a function that models the length L of her shadow in terms of her distance d from the base of the lamp.
Friday, October 9, 2009 at 12:15am by David

scinence
Minska has a problem. When she turns on a lamp, the lamp doesn't light. She wonders if the lamp is plugged into the outlet. She checks the outlet and discovers that it is plugged in. After Minska concludes that her explanation didn't fit the evidence, what would be her next ...
Monday, September 6, 2010 at 1:51pm by Happy Labor Day!!!!!!!!!!!

Physical Science: Series Circuit
There is a circuit of 2 lamps in a series. If a voltage of 6 volts is impressed across the circuit and the voltage across the 1st lamp is 2 volts, what is the voltage across the second lamp? Defend your answer I want to say that the second lamp has a voltage of 4 volts as well...
Monday, October 5, 2009 at 3:02pm by Britney

math
A lamp pole 12ft high shines on a person and casts a shadow 8ft long. If the person is 10ft from the lamp pole, calculate the person's height.
Thursday, May 26, 2011 at 12:26am by Mani

Physics
This question makes no sense to me. . . A 100-watt lamp glows brighter than a 25-watt lamp. What do you know about the resistances of these two lamps? ???? That they have different watts...thats all I can think of. Physics is not my strong subject.
Friday, October 26, 2007 at 2:51pm by Michele

Calculus
A man is 6ft tall and is walking at night straight toward a lighted street lamp at a rate of 5 ft/sec. If the lamp is 20 ft above the ground, find the rate at which the length of his shadow is changing.
Thursday, February 28, 2013 at 12:01pm by Trevor

Physics
A lamp is 4m from wall. Calculate the focal length of a concave mirror which forms a five time magnified image of lamp on wall. How far from wall must the mirror be placed?
Wednesday, January 22, 2014 at 2:07am by Sykox

physics
A person wants to push a lamp (mass 7.2 kg) across the floor, for which the coefficient of friction is 0.23. Calculate the maximum height above the floor at which the person can push the lamp so that it slides rather than tips (Fig. 9-62).
Sunday, October 21, 2012 at 6:39pm by Olivia

Physics
Capacitors are used in many applications where you need to supply a short burst of energy. A 143 μF capacitor in an electronic flash lamp supplies an average power of 12.6 kW to the lamp for 2.95 ms. To what potential difference must the capacitor initially be charged? ...
Tuesday, January 31, 2012 at 8:51pm by Ashley

physics! HELP!
A filament lamp- cost- 80p effiency- 0.2 expected life- 1000 hours a compact fluorescent lamp (CFL)- cost- £3.00 effiency- 0.8 expected life- 8000 hours a filament lamp with a power rating of 100W gives 2000 units of light. what power rating would a CFL need to provide 2000 ...
Wednesday, February 29, 2012 at 1:12pm by 4611star

to ms.sue- writing project
what i wrote: every monday, my aunt would come and visit me.everytime my aunt visits me, she would always have something special for me. This monday was different.when my aunt came to visit me today, she was holding a huge box. I heard strange noises coming from it.I heard ...
Friday, July 27, 2012 at 2:37pm by Celest

physics
A student wants to compare the luminous flux of a light bulb with that of a 1675 lm lamp. The light bulb and the lamp illuminate a sheet of paper equally. The 1675 lm lamp is 1.28 m away from the sheet of paper; the light bulb is 1.08 m away. What is the light bulb's luminous ...
Thursday, January 23, 2014 at 11:19pm by Felicia

Physics
A lamp (R = 151 ), an electric heater (R = 24 ), and a fan (R = 49 ) are connected in parallel across a 121 V line. What total current is supplied to the circuit? What is the voltage across the fan? What is the current in the lamp? What power is expended in the heater?
Monday, October 4, 2010 at 5:44pm by chuck

Pre Calc
Dr. Black is standing 15 feet away from the street lamp. The lamp is making his shadow 8 feet long. The angle of elevation from the tip of the shadow to the tip of the streetlamp is 50 degrees. How tall is the streetlamp?
Wednesday, January 26, 2011 at 9:49pm by Anonymous

English
He won first prize for the solar lamp in the science fair. (What is the meaning of 'for' in the sentence? Is 'for the solar lamp' an adjective phrase modifying 'prize' or and adverbial phrase modifying 'won'?)
Thursday, October 31, 2013 at 6:14pm by rfvv

Physics
Current flow through a lamp is 1.3 A. How many Coulombs of charge are passed through the lamp in 2 minutes? Formula for coulombs and current? Not sure..
Sunday, February 3, 2013 at 12:17am by Physics fail

Calculus
Suppose a 6ft. man is 10 ft. away from a 24 ft. tall lamp post. If the person is moving away from the lamp post at at rate of 2 ft/sec, at what rate is the length of his shadow changing?
Monday, March 14, 2011 at 1:47pm by Anonymous

physics
A lamp hangs vertically from a cord in a descending elevator that decelerates at 2.6 m/s2. (a) If the tension in the cord is 54 N, what is the lamp's mass? (b) What is the cord's tension when the elevator ascends with an upward acceleration of 2.6 m/s2?
Tuesday, October 4, 2011 at 8:47pm by Rebekah

Physics
A lamp hangs vertically from a cord in a descending elevator that decelerates at 2.9 m/s2. a) If the tension in the cord is 94 N, what is the lamp's mass? b)What is the cord's tension when the elevator ascends with an upward acceleration of 2.9 m/s2?
Monday, October 8, 2012 at 5:08pm by Aalaa

math
A man 6 feet tall walks at a rate of 5 feet/sec toward a street lamp that is 16 feet above the ground. At what rate is the tip ,of his shadow moving? At what rate is the length of his shadow changing when he is 10 feet from the base of the lamp post?
Monday, October 8, 2012 at 3:30pm by Prabhakaran

Trig/Precalc
a lamp post that is 8 feet high casts a shadow 5 feet long. how tall is the person standing beside the lamp post if his shadow is 3.5 feet long
Sunday, November 24, 2013 at 6:06pm by Marusa

Physics
A lamp hangs vertically from a cord in a descending elevator with a constant deceleration a. If the tension in the cord is T0, answer the following. (Use any variable or symbol stated above along with the following as necessary: g.) (a) What is the lamp's mass? m = (b) What is...
Monday, February 11, 2013 at 10:13am by Rachel

physics
The voltage drop across the resistor is 120 - 24 = 96 V The resistance R' of the lamp can be derived from its Wattage at 120 V: 75 W = V^2/R' = 14400/R' R' = 192 ohms Since the lamp gets 24/120 = 20% of the voltage drop, the other 80% of the voltage (96 V) is across the ...
Tuesday, October 11, 2011 at 1:54pm by drwls

physics
It is desired to move a small, 50 kg cat in outer space by strapping a lamp, which emits 100 W of blue light to it. If the cat is free in space, and the wavelength of blue light is 470 nm, what would be the acceleration of the cat? (HINT: Consider how many photons are emitted ...
Sunday, January 22, 2012 at 7:40pm by Anonymous

physics
Two chains of length 1.0m are used to support a lamp the distance between the two chains along the ceiling is 1.0m. what is the vertical distance from the lamp to the ceiling?
Wednesday, May 23, 2012 at 12:51am by Carri

physics
1A) A filament lamp- cost- 80p effiency- 0.2 expected life- 1000 hours a compact fluorescent lamp (CFL)- cost- £3.00 effiency- 0.8 expected life- 8000 hours a filament lamp with a power rating of 100W gives 2000 units of light. what power rating would a CFL need to provide ...
Wednesday, February 29, 2012 at 12:33pm by 4611star

ipc
Here is an overall search, but you would do better searching each part separately: http://search.yahoo.com/search?fr=mcafee&p=nvestigate+and+compare+economic+and+environmental+impacts+of+incandescent+light+bulbs+versus+the+various+fluorescent+lamps%2C+solar+lamp%2C+and+oil+...
Wednesday, April 13, 2011 at 12:42pm by SraJMcGin

physics
h=1.8 m, H=6 m, v=7 m/s u=? x is the distance of man to lamp post, y is the distance from the tip of the shadow to the lamp post. From the similar triangles H/h = y/(y-x), 6/1.8 = y/(y-x), 6y -6x=1.8y, 4.2 y=6 x, 0.7y=x, d{0.7y}/dt=dx/dt, 0.7(dy/dt)=dx/dt, 0.7u =v, u=v/0.7=7/0...
Sunday, January 27, 2013 at 2:23pm by Elena

writing project
Your aunt arrives with a huge box. You hear strange noises coming from the box. Write a story about what’s inside. what i wrote: every monday, my aunt would come and visit me.everytime my aunt visits me, she would always have something special for me. This monday was different...
Tuesday, August 7, 2012 at 2:33pm by Celest

Math
The intensity of illumination at a given point is directly proportional to the intensity of the light source and inversely proportional to the square of the distance from the light source. If a desk is properly illuminated by a 74.0 w lamp 8.00 ft from the desk, what size lamp...
Monday, November 21, 2011 at 10:03pm by Zoey

Math
The intensity of illumination at a given point is directly proportional to the intensity of the light source and inversely proportional to the square of the distance from the light source. If a desk is properly illuminated by a 74.0 w lamp 8.00 ft from the desk, what size lamp...
Tuesday, November 22, 2011 at 5:17pm by Jake

Math
Brenda wants to attatch a string of beads along the circular bottom edge of a lamp shade shown below. The diameter of the bottomof the lamp shade is 18 centimeters. About how many centimeters long should Brenda make the string of beads? a.25 cm b.79 cm c.56 cm d.201 cm
Wednesday, April 15, 2009 at 6:56pm by Hailey

Algebra II
The intensity of illumination at a given point is directly proportional to the intensity of the light source and inversely proportional to the square of the distance from the light source. If a desk is properly illuminated by a 74.0 w lamp 8.00 ft from the desk, what size lamp...
Monday, November 21, 2011 at 9:58pm by Zach

Algebra II
The intensity of illumination at a given point is directly proportional to the intensity of the light source and inversely proportional to the square of the distance from the light source. If a desk is properly illuminated by a 74.0 w lamp 8.00 ft from the desk, what size lamp...
Tuesday, November 22, 2011 at 10:04am by Ashley

Algebra II
The intensity of illumination at a given point is directly proportional to the intensity of the light source and inversely proportional to the square of the distance from the light source. If a desk is properly illuminated by a 74.0 w lamp 8.00 ft from the desk, what size ...
Tuesday, November 22, 2011 at 2:35pm by Marie

physics
Eva is in a closed, dark room. She uses her arm muscles to turn on a lamp. When she moves her hand closer to the lamp, the light heats her hand. The light bounces off the pages of a book and into her eyes. If this room is a closed system, what happens to the total amount of ...
Saturday, March 29, 2014 at 4:00pm by Help

Physics
Suppose that one oscillation of a swinging lamp takes 5.5s. What maximum speed does the lamp have if its maximum angle from vertical is 3.0degrees? I first found L to be 7.51m. That was right. Now, I calculated the angular frequency of the pendulum to be 1.14. I'm pretty sure ...
Thursday, November 13, 2008 at 10:31pm by Samantha

thermodynamics
Technology advancements have changed the answer. It depends on what lighting system they use. The old Incandescent Lamp 'light bulb' emits most of its energy consumption as heat, and would reduce the load on the heater. However, a modern Compact Fluorescent Lamp or LED ...
Saturday, August 31, 2013 at 11:43pm by Graham

maths
1 ) Lamp posts,dust bins and benches are paced at intervals of 70 m ,56 m ,and 84 m respectively along a strech of road 8km long.At start of the road,lamp post,dust bin and bench are placed together.Only when the three objects are all placed together,they are painted blue. How...
Wednesday, April 16, 2008 at 8:06am by MTH

Calculus
(It's a related rate question) A man 6ft tall walks away from a lamp post (15ft) at 5ft/sec. How fast is his shadow lengthening? --- I have the picture, and the constants, the man and the lamp post. I have 5ft/sec as dw/dt, and I know I'm looking for ds/dt, the rate of the ...
Sunday, September 12, 2010 at 1:59pm by Nikki

Physics
The brakes on a parked car fall and it accelerates at a constant rate, rolling into a lamp post down the hill. the car reaches a velocity of 4.3m/s by the time it smashes into the lamp post. The time between the brakes failing and the smashing of the car is 3.7s. A. what is ...
Monday, April 18, 2011 at 10:13pm by ron

physics
Call distance of man from lamp post x and distance of shadow tip from lamp post y. Then by similar triangles: (y-x)/2 = y/6 6 y - 6 x = 2 y y = 1.5 x we know dx/dt = 2 dy/dt = 1.5 * dx/dt = 3 dy/dt - dx/dt = speed of tip = 3-2 = 1
Wednesday, February 17, 2010 at 1:36am by Damon

Bright Line Spectra
If you mean line sources such as hollow cathode lamps, etc, the answer is yes. A sodium hollow cathode lamp emits a spectrum of sodium and other hollow cathode lamps emit appropriate line spectra according to what the lamp contains. There are deuterium line sources, also, but ...
Friday, February 26, 2010 at 11:16pm by DrBob222

yr 8 design technology
Systems and Control- inputs ,process and outputs 1) public address system - input ? 2)table lamp - process ? 3) street lamp - input ? 4)burgular alam - process? 5)doorbell-output-doorbell sounds (ding dong is this right?) 6)car windscreen - input-? 7)refrigerater- output- cold...
Saturday, January 10, 2009 at 6:53am by Ashkin

calculus
Make a sketch. Draw a line from the top of the street lamp to the end of her shadow I see two similar right-angled triangles. Let the length of her shadow be x ft let her distance to the street lamp be y then 24/(x+y) = 6/x which simplifies to 3x = y 3dx/dt = dy/dt dx/dt = 4/3...
Monday, December 14, 2009 at 4:08am by Reiny

phy
(Q1)the temperature at which the tungsten filament of a 12v and 36w lamp operates is 1730c.If the temperature coefficient of resistance of tungsten is 0.006/k, find the resistance of the lamp at room temperature of 20c (a)10.00(b)0.45ohms(c)0.39ohms(d)4.00ohms (Q2)At what ...
Wednesday, July 3, 2013 at 6:54am by kate

computers (Excel Macro)
Thank you Writeacher
Friday, August 29, 2008 at 3:01am by Lamp

science
It can't be (a) because the lamp still doesn't light.
Monday, September 6, 2010 at 1:51pm by Ms. Sue

physical science
the headlamp and 2 identical tail lamp are conected in paralel to batery with unknown internal resistancs.headlamp resistance wth 2.4 ohm controld by switch s1.the tail lamps are controled by s2.the resistance of the connection wired may be ignored. questions:1.determine the ...
Monday, January 16, 2012 at 1:32pm by queen

Science please help!
increase, identical in brightness to the original lamp.
Saturday, May 12, 2012 at 4:52pm by bobpursley

calculus
A lamp has a cost function of C(x) = 2500 + 10x, where x is the number of units produced per day and C(x) is in dollars. The revenue function for these lamps is R (X)= 18x−.001x^2. At least 100 lamps and no more than 2000 lamps may be produced per day. a. How many lamps ...
Monday, December 3, 2012 at 8:06pm by michael

science
what is the indepenpent variable when i make a home made lava lamp
Sunday, March 27, 2011 at 10:03pm by iliana

science
i need to find a website that has a picture of hafnium lamp filaments
Monday, February 20, 2012 at 4:04pm by dylan

Physics
what is the illumination if a lamp of 504 lm lights a distance 4.0 m below it?
Wednesday, April 10, 2013 at 12:11pm by DeaNiqua

Precalculus
If x is the distance from the lamp, and s is the length of her shadow, then using similar triangles, 13/(x+s) = 6/s s = 6/7 x
Wednesday, February 15, 2012 at 9:01pm by Steve

science
which appliance uses the larger current, a toaster or a desk lamp? Explain how you know.
Wednesday, April 29, 2009 at 4:07pm by maria nguyen

Pages: 1 | 2 | 3 | 4 | Next>>

Search
Members