Sunday

April 20, 2014

April 20, 2014

Number of results: 28,985

**physics**

an object with mass 10kg is at rest. It explodes into 4 pieces. A peice with mass 3kg travels NORTH at 5m/s, another piece 5kg travels at 30(degrees) NORTH of EAST at 2 m/s, and another piece 1.1kg travels 60(degrees) NORTH of WEST at 7 m/s. Find the mass and path of the ...
*Tuesday, February 20, 2007 at 7:43pm by danielle*

**Physics**

The magnetic force on a straight wire .69 m long is 1.5 x 10^-3 N. The current in the wire is 16.9 A. What is the magnitude of the magnetic field that is perpendicular to the wire?
*Monday, February 27, 2012 at 10:30pm by Doryn*

**math**

Juan buys 18 meter of wire. He cuts the wire into pieces of 3 meters long.how many pieces of wire dose he cut?
*Tuesday, October 22, 2013 at 7:33pm by Desmond*

**Algebra**

A radio tower is supported by a wire fastened to the ground 60 feet away from the base of the tower. If the slope of the wire is 3/2 approximately how long is the wire
*Friday, June 15, 2012 at 8:55pm by Luckybee*

**physics**

One mile of copper wire has a resistance of 13 Ω. Using the wire to electrically connect two terminals that are half a mile apart, rank the following situations in order of increasing resistance. I. Use the full length of wire. II. Cut the wire in half and use only one ...
*Monday, April 16, 2012 at 6:04pm by BOBBY*

**physics**

An aluminum wire of radius 3.10 10-4 m is stretched between the ends of 2 concrete blocks. When the system (wire and concrete) is at 35C, the tension in the wire is 57.0 N. What is the tension in the wire when the system is heated to 185C?
*Sunday, November 28, 2010 at 4:16pm by Ben*

**math homework**

A37 foot long Submarine sanwich is cut in to three piece.the shortest piece is x feet long.the second piece is twice as long as the shortest piece.the longer piece is 2 feet longer than four time the length of the shortest piece.find the length of all three piece
*Monday, October 7, 2013 at 12:58am by robinson*

**physics**

Two wires are anchored at both ends. Wire 1 has a mass of 105 grams and a length of 6.9 m. Wire 2 has a mass of 60 grams, a length of 20 m, and a tension of 143 N. What must be the tension in Wire 1 if its third harmonic is to equal the first overtone of Wire 2? T_{wire1} =
*Monday, April 14, 2014 at 5:20pm by johnny*

**Physics**

A weight of 40N was attached to the end of a wire during modulus experiment, if the length of the wire is 4m and the diameter is 0.44mm and the extension recorded is 0.30mm. calculate the stress and strain of the wire?. take[Pi=3.142
*Saturday, January 22, 2011 at 4:42am by Ochuko*

**Science, Physics**

The distance between two telephone poles is 46 m. When a 1.4 kg bird lands on the telephone wire midway between the poles, the wire sags 0.151 m. The acceleration of gravity is 9.8 m/s 2 . How much tension in the wire does the bird produce? Ignore the weight of the wire. ...
*Wednesday, September 25, 2013 at 11:13pm by Aubrie*

**physics**

The distance between two telephone poles is 49 m. When a 1.6 kg bird lands on the telephone wire midway between the poles, the wire sags 0.149 m. The acceleration of gravity is 9.8 m/s2 . How much tension in the wire does the bird produce? Ignore the weight of the wire. Answer...
*Friday, February 21, 2014 at 6:17pm by Anonymous*

**Physics**

A silver wire and a platinum wire of the same length have the same resistance. What is the ratio of the diameter of the silver wire to that of the platinum wire.
*Thursday, February 9, 2012 at 1:43pm by jason*

**Physics**

The field of the wire has a magnitude B(wire) = ₀I/(2πd) = B(wire)/B(hor) = tan11⁰ ==> B(hor) = B(wire)/ tan11⁰ =
*Monday, February 25, 2013 at 5:27pm by Elena*

**chemistry**

You need one piece of information to answer a,b,and c. A second piece to answer d. Piece 1. There are 6.022E23 molecules in a mole.Therefore, a. 1 x 6.022E23 = ?? b. 2.50 x 6.022E23 = ?? c. etc. d. piece 2 information. moles = grams/molar mass. Convert 11.5 g NO2 to moles with...
*Tuesday, February 15, 2011 at 5:07pm by DrBob222*

**science**

A piece of Aluminum wire Android a 50-pound Aluminum both have the same density. Why?
*Thursday, June 9, 2011 at 7:47pm by fransico*

**science**

A piece of copper wire and a 50lb block of copper have the same density. Explain how can this be true.
*Tuesday, February 5, 2013 at 1:04pm by teacher1*

**Math **

A piece of wire 64 cm long is bent to form a rhombus.What is the length of each side of the rhombus
*Tuesday, April 16, 2013 at 2:51pm by Angela*

**physics EM**

You have a 0.600-m-long copper wire. You want to make an N-turn current loop that generates a 1.30 mT magnetic field at the center when the current is 0.600 A. You must use the entire wire. What will be the diameter of your coil? this doesnt seem that hard but I cant figure ...
*Monday, March 31, 2008 at 10:31am by Spencer*

**Calc**

A 100 inch piece of wire is divided into 2 pieces and each piece is bent into a square. How should this be done in order of minimize the sum of the areas of the 2 squares? a) express the sum of the areas of the squares in terms of the lengths of x and y of the 2 pieces b) what...
*Tuesday, November 16, 2010 at 9:17pm by katie*

**physics**

This is pretty close to an infinite wire. It would be nice to compare it to the infinite wire. YOu have to integrate over the angle subtended by the point and the wire. I am fairly certain your text has an example.
*Tuesday, March 15, 2011 at 8:42am by bobpursley*

**math 5th grade**

A certain piece of a car's material expands by 1/12 its origial length in extreme heat. If the piece begins with a length of 30 in., how long will it be after it expands?
*Monday, May 31, 2010 at 10:09pm by marissa*

**Physics!! Help!!!!!**

A wire of length L and cross-sectional area A has resistance R. What will be the resistance R_stretched of the wire if it is stretched to twice its original length? Assume that the density and resistivity of the material do not change when the wire is stretched. Express your ...
*Wednesday, February 15, 2012 at 1:07am by Melissa*

**math**

An electric pole is supported to stand vertically on a level ground by a tight wire. The wire is pegged at a distance of 6 meters from the foot of the pole. The angle that the wire makes the ground is three times the angle it makes with the pole. Calculate the length of wire ...
*Tuesday, May 29, 2012 at 2:10am by Anonymous*

**Physics**

A particular piano wire has middle C (261.7 Hz) for its second harmonic. The wire's length is 2.7m. What is the speed of the wave in the wire? If the wire has 270 lbs of tension what is its linear density? What is the wavelength of this tone emitted into the air? Suppose two ...
*Thursday, December 5, 2013 at 7:45pm by Shelby*

**physics**

A wire of length 11 cm carries a current of 1.1 A. When the wire is placed so that the current passes through the wire along the positive x direction, the force on the wire due to an external magnetic field B is measured to be -(0.04 N)j. When the wire is moved so the current ...
*Saturday, February 27, 2010 at 8:10pm by Sandhya*

**math**

An electric pole is supported to stand vertically on a level ground by a tight wire. The wire is pegged at a distance of 6 meters from the foot of the pole as shown. The angle that the wire makes the ground is three times the angle it makes with the pole. Calculate the length ...
*Sunday, May 27, 2012 at 5:28pm by anonymous*

**calculus**

a piece of wire 12 inches long is to be used to form a square and or a circle.determine a function that expresses the combined area of both figures.what is its domain?
*Friday, August 26, 2011 at 1:28am by natasha*

**Mathematics**

A drinking straw of length 21 cm is cut into 3 pieces the length of the first piece is x cm the second piece is 3cm shorter than the 1st piece the third piece is twice as long as first piece (a) state in terms of x the length of the pieces (i think i figured that one out...1st...
*Wednesday, July 4, 2012 at 3:49pm by INDIANA*

**physics**

the distance between two telephone poles is 50.0m. When a 1.00kg bird lands on the telephone wire midway between the poles ,the wire sags 0.200m. Draw a free body diagram of the bird.how much tension does the bird produce in the wire? Ignore the weight of the wire. Pls help
*Thursday, October 28, 2010 at 12:18am by tshego*

**chemistry**

An 85.0-N backpack is hung from the middle of an aluminum wire, as the drawing shows. The temperature of the wire then drops by 20.0 C. Find the tension in the wire at the lower temperature. Assume that the distance between the supports does not change.
*Sunday, April 18, 2010 at 3:11am by zuta*

**Physics**

The lowest A on a piano has a frequency of 27.5 Hz. Assume: The tension in the A piano wire (of length 0.51 m) is 305 N, and one-half wavelength occupies the wire. What is the mass of m the wire? Answer in units of kg.
*Monday, October 1, 2012 at 4:10pm by AJ*

**Physics**

The lowest A on a piano has a frequency of 27.5 Hz. Assume: The tension in the A piano wire (of length 0.51 m) is 305 N, and one-half wavelength occupies the wire. What is the mass of m the wire? Answer in units of kg.
*Friday, October 5, 2012 at 6:55pm by AJ*

**Physics**

A horizontal wire is held taut by a mass M hanging from its end over a pulley. A harmonic wave of wavelength is produced on the wire by a 52 Hertz vibration. If the mass of the density of the wire is 8.0 x 10^-3 kg/m, what is M?
*Friday, January 18, 2013 at 11:20am by Sean*

**Statistics**

Hi am having trouble finding the lamda value for this question the below I tried different methods but they don't make sense. I know for everyone 25 metres theirs 1 nick. A coil of wire has 500 metres of wire. Suppose there are 20 nicks (the most common problem with wire) are ...
*Saturday, March 26, 2011 at 11:58am by John*

**algebra**

Three pieces of wood are needed for project. They are to be cut from a 90cm long piece of wood. The longest piece is to be 3 times as long as the middle sized piece and the shortest piece is to be 10 cm shorter than the middle sized piece. Can this be done with 2 cuts? If so, ...
*Sunday, May 9, 2010 at 2:21pm by Kristi*

**physics**

As part of a class project you are given 0.900 g of nichrome and asked to fabricate a wire with uniform cross-section. You use up 95% of the nichrome and make a wire with a resistance of 0.840 Ω. The resistivity of nichrome is 1.00 10-6 Ω m and its density is 8.31 ...
*Sunday, September 15, 2013 at 8:02pm by Justin*

**Physics**

In Oersted's experiment, suppose that the compass was 0.30 m from the current-carrying wire. If a magnetic field of 1/3 the Earth's magnetic field of 5 10−5 T was required to give a noticeable deflection of the compass needle, what current must the wire have carried? I ...
*Sunday, March 24, 2013 at 3:02pm by Valerie*

**Physics**

A loop wire is in a magnetic field of 2T. What is the magnitude of the magnetic flux? 0.2 m radius B = 2T 30 degrees and n is pointing out of the page Ok so BAcos(30) B= 2T A= 3.14 r^2 for a circle right? (3.14)(0.2)^2 cos(30) 2T(3.14)(0.2)^2(cos(30))= 0.0335 and the answer is...
*Tuesday, August 4, 2009 at 10:23am by TJ*

**physics**

The current-density magnitude in a certain cicular wire is J= (2.75*10^10A/m^4)r^, where r is the radial distance out to the wire 's radius of 3.00 mm. The potential applied to the wire is 60.0 V. how much energy is converted to thermal enery in 2 hours?
*Sunday, September 19, 2010 at 9:58pm by tauteh*

**PHYSICS**

1)A picture of width 40 cm weighing 40N hangs from a nail by means of flexible wire attached to the sides of the picture frame. The midpoint of the wire passes over the nail which is 3 cm higher than the points where the wire is attached to the frame. Find the tension of the ...
*Monday, November 29, 2010 at 7:04pm by Ann*

**PHYSICS 2**

A horizontal wire that runs east-west carries a steady current to the east. A C-shaped magnet is placed so that the wire runs between the poles, with the north pole above the wire and the south pole below. What direction of the magnetic force on the wire between the poles?
*Sunday, October 28, 2012 at 10:16am by Ashley*

**need help**

A picture of width 43.0 cm, weighing 52.0 N, hangs from a nail by means of flexible wire attached to the sides of the picture frame. The midpoint of the wire passes over the nail, which is 2.50 cm higher than the points where the wire is attached to the frame. Find the tension...
*Monday, October 22, 2012 at 4:30pm by justin*

**math**

a piece of wire 3.5m long was cut into lengths each measuring 0.05m long.Calculate the number of pieces obtained.
*Friday, September 14, 2012 at 4:59pm by saeed*

**Calc-Based Physics**

The distance between two telephone poles is 50.0 m. When a 1.00-kg bird lands on the telephone wire midway between the poles, the wire sags 0.200 m. Draw a free-body diagram of the bird. How much tension does the bird produce in the wire? Ignore the weight of the wire. What do...
*Friday, October 26, 2007 at 4:25pm by Sean*

**physics**

Find the diameter of an 18 m(L) long steel wire that will stretch no more than.009 m AL when a load stress of 3800 N is hung on the end of the wire. The Young's Modulus for steel wire is 200 x 109 N/m2?
*Friday, December 27, 2013 at 1:40pm by farid*

**physics**

An object at rest explodes into three pieces of equal mass.One moves east at 20.0 m/s,a second moves southeast at 30.0 m/s. What is the velocity of the third piece? The vector sum of the momenta of the three pieces must be zero, since it was zero to begin with. The two pieces ...
*Saturday, September 23, 2006 at 2:49am by miss sixty*

**physics**

A 5.2 m wire with a mass of 86 g is attached to the mast of a sailboat. If the wire is given a "thunk" at one end, it takes 0.085 s for the resulting wave to reach the other end. Part A What is the tension in the wire? Would the tension found in part A be larger or smaller if ...
*Saturday, November 26, 2011 at 10:39pm by jazz*

**Mathematics**

If a piece of wood is 5 cm longer than a second piece, and 3/4 of the second piece is equal to 3/5 of the first, what is the length of the second piece? Explain your workings
*Wednesday, November 9, 2011 at 7:10am by Mikie*

**Mathematics**

If a piece of wood is 5 cm longer than a second piece, and 3/4 of the second piece is equal to 3/5 of the first, what is the length of the second piece? Explain your workings
*Wednesday, November 9, 2011 at 6:45am by Kevin*

**Mathematics**

If a piece of wood is 5 cm longer than a second piece, and 3/4 of the second piece is equal to 3/5 of the first, what is the length of the second piece? Explain your workings
*Wednesday, November 9, 2011 at 9:27am by Jessica*

**physics**

A wire has a resistance of 27.2 ohms. It is melted down, and from the same volume of metal a new wire is made that is 3 times longer than the original wire. What is the resistance of the new wire? Resistance and length of wire are proportional, but what I am unsure of is if ...
*Wednesday, July 25, 2012 at 9:06pm by Lauren*

**physics need help bad**

A picture of width 43.0 cm, weighing 52.0 N, hangs from a nail by means of flexible wire attached to the sides of the picture frame. The midpoint of the wire passes over the nail, which is 2.50 cm higher than the points where the wire is attached to the frame. Find the tension...
*Monday, October 22, 2012 at 4:31pm by justin*

**physics help i still dont get it**

A picture of width 43.0 cm, weighing 52.0 N, hangs from a nail by means of flexible wire attached to the sides of the picture frame. The midpoint of the wire passes over the nail, which is 2.50 cm higher than the points where the wire is attached to the frame. Find the tension...
*Monday, October 22, 2012 at 4:56pm by justin*

**physics**

The distance between two telephone poles is 59.0 m. When a 1.00 kg bird lands on the telephone wire midway between the poles, the wire sags 0.200 m. draw a free-body diagram of the bird. (do this on paper. your instructor may ask you to turn in this work.) how much tension ...
*Wednesday, December 7, 2011 at 8:50pm by ann*

**Physics**

The distance between two telephone poles is 58.0 m. When a 1.00-kg bird lands on the telephone wire midway between the poles, the wire sags 0.240 m. Draw a free-body diagram of the bird. (Do this on paper. Your instructor may ask you to turn in this work.) How much tension ...
*Friday, May 3, 2013 at 8:33pm by Abdullahi A.*

**Algebra**

A ribbon 106 inches long is cut into three pieces. The middle-sized piece is 4 inches longern than twice the shortest piece. the longest piece is 3 times as long as the shortest piece. how long is the shortest piece?
*Saturday, September 27, 2008 at 6:21pm by Tina*

**Physics **

Suppose a straight 1.60mm -diameter copper wire could just "float" horizontally in air because of the force due to the Earth's magnetic field B⃗ , which is horizontal, perpendicular to the wire, and of magnitude 4.210−5T . What current would the wire carry?
*Saturday, February 22, 2014 at 11:26am by Anonymous*

**Calculus**

A piece of wire 40cm long is cut into two pieces. One piece is bent into the shape of a square and the other is bent into the shape of a circle. How should the wire be cut so that hte total area enclosed is a) a maximum? /b) a minimum? Perimeter of square = x Circumference of ...
*Wednesday, January 20, 2010 at 9:31pm by sh*

**maths**

An iron rod when cut into pieces each of 30 cm length, a piece of 7 cm is left out. However, if each piece is of 28 cm length, a piece of 5 cm is left out. What is the length of the shortest such rod?
*Tuesday, March 26, 2013 at 9:50am by chandana*

**Physics**

You've made the finals of the Science Olympics! As one of your tasks, you're given 1.1g of copper and asked to make a cylindrical wire, using all the metal, with a resistance of 1.7 Ohm. What length l will you choose for your wire? What diameter d will you choose for your wire?
*Wednesday, February 17, 2010 at 6:17pm by Anthony*

**Physics**

A 50-cm wire placed in an East-West direction is moved horizontally to the North with a speed of 2 m/s. The Horizontal and Vertical components of the earth's magnetic field at that location are 25 T and 50T respectively. What is the emf between the ends of the wire? A) 30 V...
*Tuesday, March 12, 2013 at 9:11am by Liz*

**physics**

Consider a long charged straight wire that lies fixed and a particle of charge +2e and mass 6.70E-27 kg. When the particle is at a distance 1.31 cm from the wire it has a speed 2.30E+5 m/s, going away from the wire. When it is at a new distance of 2.71 cm, its speed is 3.10E+6...
*Wednesday, January 27, 2010 at 4:36pm by jaredd*

**chemistry**

Calcultate the volume (in mL)of 0.250M silver nitrate solution required to react completely with a 5.00g piece of copper wire. (Assume the reaction runs at 100% yield.)
*Wednesday, April 13, 2011 at 3:23pm by Tinkerbell*

**Chemistry**

Calcultate the volume (in mL)of 0.250M silver nitrate solution required to react completely with a 5.00g piece of copper wire. (Assume the reaction runs at 100% yield.)
*Friday, April 15, 2011 at 8:28pm by Tinkerbell**

**college physics**

Consider a long charged straight wire that lies fixed and a particle of charge +2e and mass 6.70E-27 kg. When the particle is at a distance 1.31 cm from the wire it has a speed 2.30E+5 m/s, going away from the wire. When it is at a new distance of 2.71 cm, its speed is 3.10E+6...
*Wednesday, January 27, 2010 at 5:58pm by jibjab*

**Algebra**

How about: let the shortest piece be x cm <the shortest piece is 23 cm shorter than the longest piece> or the longest piece is 23 more than the shortest piece, so longest = x+23 <The longest piece is 3 times as long as the middle-sized piece> or the middle piece is...
*Friday, November 14, 2008 at 5:49pm by Reiny*

**mechanics**

The change in length of a steel wire under an applied load can be halved by keeping all other conditions constant but using: A. a different material having a Young's modulus half that of steel B half the cross sectional area of the steel wire C half the length of steel wire D ...
*Sunday, February 24, 2013 at 12:27pm by dmkp*

**math**

a piece of rope 3m 66 m long was cut into 2 pieces. the longer piece was twice as long as the shorter piece. What was the length of the longer piece?
*Wednesday, March 20, 2013 at 11:04pm by Xio*

**Physics **

A long, straight wire has a uniform linear charge density of 7.50X10^-4 C/m. A point charge q=15.0 microcoulombs is located 4.50 cm away from the wire. Find the magnitude of the force exerted by the charge q on the wire.
*Tuesday, January 31, 2012 at 8:22am by Angelo*

**Physics **

A long, straight wire has a uniform linear charge density of 7.50X10^-4 C/m. A point charge q=15.0 microcoulombs is located 4.50 cm away from the wire. Find the magnitude of the force exerted by the charge q on the wire.
*Tuesday, January 31, 2012 at 8:26am by Angelo*

**Math**

A supporting wire is to be attached to the top of a 32-foot antenna. If the wire must be anchored 32 feet from the base of the antenna, what length of wire is required? Please explain
*Wednesday, April 14, 2010 at 4:38pm by Mala*

**math**

Am I missing something here. They way I read this is that the answer is already given 9.5m. or are they after the angle of the ground to guy wire? The guy wire is 13.4m long. It supports a vertical power pole. The wire is fastened to the ground 9,5m from the base of the 8.7m ...
*Wednesday, April 3, 2013 at 10:14am by Rose*

**Physics repost**

Please help!! I have tried everything and is still coming up with and incorrect answer. A piece of copper wire is formed into a single circular loop of radius 13 cm. A magnetic field is oriented parallel to the normal to the loop, and it increases from 0 to 0.70 T in a time of...
*Wednesday, October 10, 2007 at 6:52pm by Mary*

**geometry**

a. We form a rt triangle: A = 30 Deg. = Angle between hyp. and hor. side. Y = Ht. of guy wire attached to tree. Z = hyp. = 12 Ft guy wire. Y = 12*sin30 = 6 Ft. b. X = 12*cos30 = 10.4 Ft.
*Tuesday, May 8, 2012 at 12:52pm by Henry*

**Math**

A telephone is anchored to the ground by a long cable called a guy wire, at a point 5 meters from the base of the pole, the wire makes an angle of 72.5 degrees with the horizontal. What is the length of the guy wire? HELP ASAP! I forgot how to compute for this (Pythagorean ...
*Monday, October 15, 2012 at 10:33pm by Sofia*

**Art and Culture: Hellensitic Greece**

What is the purpose of the Altar of Zeus in Pergamum? Who is responsible for paying for or commissioning the piece? How was it made? What is the meaning of this piece and what does it express or reveal about its creator? What aspects of the Hellenistic civilization and its ...
*Saturday, June 12, 2010 at 6:23pm by Hannah*

**physics**

Two parallel wires which carry currents I1 = 69 A and I2. The top wire is held in position, the bottom wire is prevented from moving sideways but can slide up and down without friction. If the wires have a mass of 5.3 g per metre of length calculate current I2 such that the ...
*Monday, March 22, 2010 at 7:01pm by Jason*

**mechanics of materials**

The change in length of a steel wire under an applied load can be halved by keeping all other conditions constant but using:which of the following is correct A. a different material having a Young's modulus half that of steel B half the cross sectional area of the steel wire C...
*Friday, February 22, 2013 at 6:04am by dmkp*

**MATH**

A guy-wire is attached to a tree to help it grow straight. The length of the wire is 2 feet greater than the distance from the base of the tree to the stake. Find the length of wire. x + 2 x + 1 x how would i set this one up?
*Tuesday, September 30, 2008 at 12:44pm by jennifer*

**physics**

A wire of length 0.655 m carries a current of 21.0 A. In the presence of a 0.470-T magnetic field, the wire experiences a force of 5.46 N. What is the angle (less than 90) between the wire and the magnetic field?
*Tuesday, November 10, 2009 at 2:07am by Anonymous*

**Physics**

A 0.50m long wire is carrying a current of 8.0A toward the east. The wire passes through a magnetic field of 0.40T toward the north. What is the force which acts on the wire? What is the direction of the force.
*Wednesday, May 5, 2010 at 3:43pm by Javier*

**Physics **

A weight of 50.0 N is hung from the center of a stretched horizontal wire 10.0 meters long. It causes the wire to say 1.00m at its center. What is the force exerted by each half of the wire in supporting the weight?
*Wednesday, October 6, 2010 at 7:37pm by Christina*

**Calculus**

An open box is to be made from cutting squares of side "s" from each corner of a piece of cardboard 25" by 30". Write an expression for the volume, V, of the box in terms of s. -I have no idea where to start on this. I know V=lwh (length*width*height), but what about "s" and ...
*Saturday, August 1, 2009 at 2:47pm by Monique*

**Physics**

The lowest A on a piano has a frequency of 27.5 Hz. Assume: The tension in the A piano wire (of length 1.8 m) is 305 N, and one-half wave- length occupies the wire. What is the mass of m the wire? Answer in units of kg.
*Monday, September 26, 2011 at 11:23pm by Maria*

**mechanics of materials**

Select the correct answer.The change in length of a steel wire under an applied load can be halved by keeping all other conditions constant but using: A. A different material having a Young's modulus half that of steel B half the cross sectional area of the steel wire C half ...
*Thursday, February 21, 2013 at 5:34pm by dmkp*

**algebra**

if a piece of wood is 2 cm longer than a second piece, and 3/4 of the second piece is equal to 3/5 of the first, what is the length of the second piece?
*Tuesday, November 8, 2011 at 9:51am by Aldwin*

**physics**

A length of wire has a radius of 3.00 ~ 10-3 m and a resistance of 0.200 . When the potential difference across the wire is 10.0 V, the electron drift speed is found to be 2.98 ~ 10-4 m/s. On the basis of these data, calculate the density of free electrons in the wire.
*Thursday, November 15, 2012 at 7:27pm by Stacey*

**math**

Three pieces of wood are needed for a project. They are to be cut from a 90-cm-long piece of wood. The longest piece is to be 3 times as long as the middle-sized piece and the shortest piece is to be 10 cm shorter than the middle-sized piece. Can this be done with two cuts? If...
*Sunday, May 23, 2010 at 12:12am by Annie*

**Math**

Three pieces of wood are needed for a project. They are to be cut from a 90-cm-long piece of wood. The longest piece is to be 3 times as long as the middle-sized piece and the shortest piece is to be 10 cm shorter than the middle-sized piece. Can this be done with two cuts? If...
*Wednesday, June 2, 2010 at 10:39am by Anonymous*

**Physics**

An acrobat hangs by his hands from the mid- dle of a tightly stretched horizontal wire so that the angle between the wire and the hori- zontal is 12.5◦. If the acrobats mass is 88.8 kg, what is the tension in the wire? The acceleration of gravity is 9.8 m/s2. Answer in ...
*Thursday, November 12, 2009 at 6:09pm by Letisha*

**Physics**

An acrobat hangs by his hands from the mid- dle of a tightly stretched horizontal wire so that the angle between the wire and the hori- zontal is 12.5◦. If the acrobats mass is 88.8 kg, what is the tension in the wire? The acceleration of gravity is 9.8 m/s2. Answer in ...
*Thursday, November 12, 2009 at 6:13pm by Letisha*

**Physics**

An acrobat hangs by his hands from the mid- dle of a tightly stretched horizontal wire so that the angle between the wire and the hori- zontal is 12.5◦. If the acrobats mass is 88.8 kg, what is the tension in the wire? The acceleration of gravity is 9.8 m/s2. Answer in ...
*Thursday, November 12, 2009 at 6:13pm by Letisha*

**physics numerical**

a long horizontal wire is rigidly placed, carrying a current of 50a. another parallel long wire carrying a current of 40a is just supported above it.determine the distance between them at which the upper wire can be just supported by magnetic repulsion itself.(weight of upper ...
*Thursday, October 20, 2011 at 4:41am by brock*

**Heat Transfer**

A hot-wire anemometer is a temperature-based instrument for measuring velocities in a flowing gas. The key component of the device is a very fine wire (diameter = 0.0004 in., length = 0.20 in.) that is electrically heated. The wire is positioned so that the air stream passes ...
*Friday, August 3, 2012 at 10:16am by Rangen*

**Physics**

If the EMF produced in a wire is 0.88 volts and the wire moves perpendicular to a magnetic field of strength 0.075 newtons/ampmeter at a speed of 4.20 meters/second, what is the length of the wire in the magnetic field?
*Thursday, May 16, 2013 at 1:22am by Jake*

**Physics (PLEASE HELP)**

The force is q V B and is perpendicular to both the wire and the B field, which makes it radial inward. (A negative charge moving opposite to the current direction is attracted to the wire). For B, use Ampere's law of a straight wire. B = u * I /(2 pi R) where u is the ...
*Tuesday, February 7, 2012 at 5:05pm by drwls*

**university, physics. **

A length of wire has a radius of 3.00 ~ 10-3 m and a resistance of 0.200 . When the potential difference across the wire is 10.0 V, the electron drift speed is found to be 2.98 ~ 10-4 m/s. On the basis of these data, calculate the density of free electrons in the wire.
*Monday, November 19, 2012 at 2:30pm by Brette*

**Math**

A vertical tower is supported by guy wires anchored at a point on the ground. The longer wire is attached to the top of the tower and makes an angle of 53 with the ground. The shorter wire makes an angle of 21 with the ground. The shorter wire is 80 ft. long. Where would the ...
*Saturday, November 17, 2012 at 3:04pm by Melia*

**physics**

A 5.9 m wire with a mass of 79 g is attached to the mast of a sailboat. If the wire is given a "thunk" at one end, it takes 0.087 s for the resulting wave to reach the other end. 1. What is the tension in the wire? 2. Calculate the tension for a 89-g wire. --- I don't know how...
*Sunday, December 2, 2012 at 8:43am by Brienne*

**Physics**

A gold wire and a silver wire have the same dimensions. At what temperature will the silver wire have the same resistance that the gold wire has at 20C?
*Thursday, February 28, 2013 at 2:43pm by lindsey*

Pages: <<Prev | 1 | 2 | **3** | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Next>>