Wednesday
June 19, 2013

# Search: A rod 55 long and 1.0 in radius carries a 2.0 charge distributed uniformly over its length

Number of results: 23,803

Physics
A nonuniform 2.0-kg rod is 2.0 m long. The rod is mounted to rotate freely about a horizontal axis perpendicular to the rod that passes through one end of the rod. The moment of inertia of the rod about this axis is 4.0 kg m2. The center of mass of the rod is 1.2 m from the ...
Sunday, October 28, 2012 at 7:35am by Anonymous

Physics
There is a rod that is 50cm long and has a radius of 1cm that carries a charge of 2uC distributed uniformly over its length. What would be the value of the magnitude of the electric field. (a) 4.0 mm from the rod surface, not either end So far I have 2(8*10^-6)(9*10^9)/.55=...
Tuesday, August 25, 2009 at 12:50pm by Sammy

physics
2. Rod A, which is 30 cm long, expands by 0.045 cm when heated from 0°C to 100°C. Rod B, also 30 cm long expands by 0.075 cm for the same change in temperature. A third Rod C, also 30 cm long is made up of the materials of rod A and B, connected end to end. It expands ...
Monday, February 13, 2012 at 9:33am by Anonymous

A thin uniform rod (length = 1.3 m, mass = 4.1 kg) is pivoted about a horizontal frictionless pin through one of its ends. The moment of inertia of the rod through this axis is 1/3 m L2. The rod is released when it is 55° below the horizontal. What is the angular ...
Friday, March 25, 2011 at 7:36pm by HELP!!!!

Physics
A 1.2 -long steel rod with a diameter of 0.50 hangs vertically from the ceiling. An auto engine weighing 4.7 is hung from the rod. By how much does the rod stretch?
Thursday, November 22, 2012 at 11:40pm by Coco

physics
An aluminum rod is 21.5 cm long at 20°C and has a mass of 350 g. If 12500 J of energy is added to the rod by heat, what is the change in length of the rod?
Monday, November 8, 2010 at 9:20am by Erica--help!

Chemistry
A 500g iron (Fe) rod was left in air for a long period of time, and got covered with rust (Fe2O3) as a result of reaction with atmospheric oxygen. The mass of the rusty rod was determined as 560g. a) calculate the theoretical yield of Fe2O3(s), that is the mass of Fe2O3(s) ...
Sunday, March 18, 2012 at 8:47pm by Riley

Waves
a long fishing rod is kept upright .A boat engine causes the rod to vibrate.Mary speculates that the end of the rod moves to and fro 20 times in 1 minute.The amplitude of the vibrtion is 0.15m.Calculate the speed of the vibration at the end of the fishing rod
Wednesday, June 15, 2011 at 9:37am by Sivashen

Physics
Obviously I do not know what your axes are. lengths 2 and 1 masses 2 and 1 if along the long rod: I = (1/3)(1) * 1^2 = 1/3 if along the short rod I = (1/12)(2) * 2^2 = 8/12 = 2/3 if perpendicular to the plane of the rods at intersection I = 3 (1/3) (1)(1^2) = 1 = 3/3 so ...
Saturday, November 3, 2012 at 10:15pm by Damon

physics
A graphite rod is 1.0 m long, with a 1.0 cm by 0.5 cm rectangular cross sectional area. What is the electrical resistance between its long ends? What must be the diameter of a circular 2.0 m long copper rod if its resistance is to be the same?
Friday, March 9, 2012 at 10:33am by pakilina

Physics
According to the Guinness Book of World Records (1990 edition, p. 169), the highest rotary speed ever attained was 2010 m/s (4500 mph). The rotating rod was 15 cm (5.9 in) long. Assume the speed quoted is that of the end of the rod. What is the centripetal acceleration of the ...
Sunday, January 13, 2013 at 9:42pm by Emily

physics
Resonance of sound waves can be produced within an aluminum rod by holding the rod at its midpoint and stroking it with an alcohol-saturated paper towel. In this resonance mode, the middle of the rod is a node while the ends are antinodes; no other nodes or antinodes are ...
Monday, December 6, 2010 at 1:56pm by Erica--help!

AP Physics
A long, straight wire carries a current of 740 mA. A thin metal rod 45 cm long is oriented perpendicular to the wire and moves with a speed of 1.8 m/s in a direction parallel to the wire. What are the size and direction of the emf induced in the rod if the nearest point of the...
Saturday, April 9, 2011 at 4:44pm by Martina

physics
The resistance of a 395 m long aluminum rod is 3580 . A. Find the cross-sectional area of the rod mm2 B. Find the current in the rod when a potential difference of 14 V is applied across the ends. A
Monday, February 20, 2012 at 8:01pm by Anonymous

physics
6. A square aluminum rod is 1.0 meters long and 5.0 mm on edge. What is the resistance between its ends? What must be the diameter of a circular 1.0 meter long copper rod if its resistance is to be the same
Monday, March 14, 2011 at 2:32pm by okay

physic
An aluminum rod is 10.0 cm long and a steel rod is 80.0 cm long when both rods are at a temperature of15 degrees cel. Both rods have the same diameter. The rods are joined end-to-end to form a rod 90.0 cm long. The coefficients of linear expansion of aluminum and steel are2....
Saturday, July 24, 2010 at 3:25pm by Paul

Physics- Angular Momentum
A long thin rod of mass M=2.00 kg and length L=75.0 cm is free to rotate about its center. Two identical masses (each of mass m = .45kg) slide without friction along the rod. The two masses begin at the rod's point of rotation when the rod is rotating at 10.0 rad/s. A) ...
Tuesday, December 28, 2010 at 3:22pm by Miki

Physics
A long thin rod of mass M = 2:00 kg and length L = 75:0 cm is free to rotate about its center as shown. Two identical masses (each of mass m = .403 kg) slide without friction along the rod. The two masses begin at the rod's point of rotation when the rod is rotating at 10....
Saturday, December 24, 2011 at 8:02pm by Lindsay

Physics
There is a rod that is 55 cm long and 1 cm in radius that carries a 8 uC charge that is ditributed uniformly over its entire length. What would be the magnitude of the electric filed 4.0 mm from the ord surface, not near either? So far I have 2(8*10^-6)(9*10^9)/.55=261818 then...
Thursday, August 27, 2009 at 10:36pm by Sammy

physics
A metal rod is 40.125 cm long at 20 °C and 40.148 cm long at 35 °C. calculate the coefficient of linear expansion of the rod for this temperature range.
Wednesday, February 22, 2012 at 4:30am by selena

chemistry
You don't want to take the chance of contaminating the ppt. Frankly, I think it's ok to stir with a glass rod, rinse it thoroughly with water from a wash bottle, and reuse the same glass rod as long as it hasn't been in contact with any other surface (meaning that ...
Sunday, March 27, 2011 at 9:16pm by DrBob222

Angular Momentum
A long thin rod of mass M = 2.00 kg and length L = 75.0 cm is free to rotate about its center as shown. Two identical masses (each of mass m = .421 kg) slide without friction along the rod. The two masses begin at the rod's point of rotation when the rod is rotating at 10....
Monday, July 11, 2011 at 10:37pm by jhay

physics
In a certain experiment, it is necessary to be able to move a small radioactive source at selected, extremely slow speeds. This is accomplished by fastening the source to one end of an aluminum rod and heating the central section of the rod in a controlled way. If the ...
Wednesday, April 23, 2008 at 6:07pm by lizzy

rotational mechanics
a thin rod of length 2R and mass M is standing vertically on a perfectly smooth floor. the state of equilibrium in which the rod at rest is unstable and the rod falls. FInd the trajectories that the various points of rod describe and velocity with which the upper end of rod ...
Wednesday, March 31, 2010 at 11:46am by pramod

science-physics
A worker sits at one end of a 183-N uniform rod that is 2.80 m long. A weight of 107 N is placed at the other end of the rod. The rod is balanced when the pivot is 0.670 m from the worker. Calculate the weight of the worker
Wednesday, May 15, 2013 at 1:51am by karen

physics
A 1.4-m-long massless rod is pivoted at one end and swings around in a circle on a frictionless table. A block with a hole through the center can slide in and out along the rod. Initially, a small piece of wax holds the block 20 from the pivot. The block is spun at 50 , then ...
Saturday, April 28, 2012 at 4:00am by Anonymous

physics
A long, straight metal rod has a radius of 4.50 cm and a charge per unit length of 30.0 nC/m. Find the electric field at the following distances from the axis of the rod, where distances are measured perpendicular to the rod. a)3.00 cm b)13.5 cm c)120 cm
Monday, November 1, 2010 at 1:26am by anonymous

Physics
A long, thin rod (length = 4.0 m) lies along the x axis, with its midpoint at the origin. In a vacuum, a +5.0 µC point charge is fixed to one end of the rod, while a -5.0 µC point charge is fixed to the other end. Everywhere in the x, y plane there is a constant ...
Saturday, January 26, 2013 at 2:03pm by Amy

Physics
A long, thin rod (length = 4.0 m) lies along the x axis, with its midpoint at the origin. In a vacuum, a +5.0 µC point charge is fixed to one end of the rod, while a -5.0 µC point charge is fixed to the other end. Everywhere in the x, y plane there is a constant ...
Saturday, January 26, 2013 at 3:03am by Amy

Physics
The left end of a 1-kg, 1.0 m long uniform thin rod is attached to a pivot, about which it can rotate freely. A force F is applied at the right end of the rod at 30 degree angle to hold the rod stationary in a horizontal position. What is the magnitude of the force F? I think ...
Sunday, April 21, 2013 at 10:31am by gina

Physics
The density of a 4.41-m long rod can be described by the linear density function &#955;(x) = 111 g/m + 12.3x g/m2. One end of the rod is positioned at x = 0 and the other at x = 4.41 m. found total mass of rod to be: 609 grams need help finding : the center-of-mass ...
Thursday, March 10, 2011 at 1:06pm by Emily

Physics
The density of a 4.41-m long rod can be described by the linear density function &#955;(x) = 111 g/m + 12.3x g/m2. One end of the rod is positioned at x = 0 and the other at x = 4.41 m. found total mass of rod to be: 609 grams need help finding : the center-of-mass ...
Thursday, March 10, 2011 at 12:54pm by Emily

physics
A uniform 1.3-kg rod that is 0.80 m long is suspended at rest from the ceiling by two springs, one at each end of the rod. Both springs hang straight down from the ceiling. The springs have identical lengths when they are unstretched. Their spring constants are 60 N/m and 35 N...
Wednesday, December 1, 2010 at 1:27pm by sammie

Physics
If a rod is moving at a velocity equal to 1/2 the speed of light parallel to its length, what will a stationary observer observe about its length? The length of the rod will become exactly half of its original value. The length of the rod remains the same. The length of the ...
Tuesday, October 23, 2012 at 10:24am by Laurie

Physics
The density of a 5.0-m long rod can be described by the linear density function &#955;(x) = 140 g/m + 14.8x g/m2. One end of the rod is positioned at x = 0 and the other at x = 5 m. (a) Determine the total mass of the rod. (b) Determine the center-of-mass coordinate. I ...
Monday, June 11, 2012 at 7:14pm by James

physics
A cylindrical rod( length L, radius R and density d) is dipped vertically in to a liquid. the rod is connected by a wire to a balance that measures the force to lift the rod. the contact angle between rod and liquid is &#952;. If rod is partially immersed so 0.5L is above ...
Sunday, March 6, 2011 at 11:06pm by kinjal

physics
A cylindrical rod( length L, radius R and density d) is dipped vertically in to a liquid. the rod is connected by a wire to a balance that measures the force to lift the rod. the contact angle between rod and liquid is &#952;. If rod is partially immersed so 0.5L is above ...
Sunday, March 6, 2011 at 11:05pm by kinjal

Physics - Center of Mass
The density of a 5.0-m long rod can be described by the linear density function &#955;(x) = 145 g/m + 14.2x g/m2. One end of the rod is positioned at x = 0 and the other at x = 5 m. a) Determine the total mass of the rod. b) Determine the center-of-mass coordinate.
Saturday, June 16, 2012 at 7:43pm by Joe

college physics
One cm of a 10-cm-long rod is made of metal, and the rest is wood. The metal has a density of 5000kg/m^3 and the wood has a density of 500kg/m^3. When the rod is set into pure water, the metal part points downward. How much of the rod is underwater?
Monday, December 6, 2010 at 1:48pm by jessica

college physics
One cm of a 10-cm-long rod is made of metal, and the rest is wood. The metal has a density of 5000kg/m^3 and the wood has a density of 500kg/m^3. When the rod is set into pure water, the metal part points downward. How much of the rod is underwater?
Monday, December 6, 2010 at 1:48pm by jessica

Physics
A thin rod L = 9.0 cm long is uniformly charged and has a total charge of 4.4 nC. Find the magnitude of the electric field at a point P located at a distance R = 13.5 cm from the center of the rod when: (a) The point P lies along the axis of the rod Electric field =___kN/C (b...
Monday, July 9, 2012 at 11:11pm by Rain

physics
If a rod is moving at a velocity equal to 1/2 the speed of light parallel to its length, what will a stationary observer observe about its length? The length of the rod will become exactly half of its original value. The length of the rod remains the same. The length of the ...
Monday, October 22, 2012 at 4:39pm by laurie

visual basic
here is my source code for my program im trying to convert 10 units from furlong to meters the answer is supposed to be 2011.68 meters i keep getting 2000. I know if i cant get this right the rest of the conversion will give the wrong answers anybody have any ideas? Dim inch ...
Friday, May 8, 2009 at 1:11pm by cl

College Physics
A rod of mass 4.3 kg and length 4.3 m hangs from a hinge as shown in Figure P9.28. The end of the rod is then given a “kick” so that it is moving at a speed of 2.3 m/s. How high will the rod swing? Express your answer in terms of the angle (in degree) that the rod ...
Tuesday, October 18, 2011 at 8:46pm by Anon

physics
For the step ladder shown in the Figure, sides and are each ft long and hinged at . is a -ft long tie rod, installed halfway up the ladder. A -kg man climbs ft along the ladder. Assuming that the floor is frictionless and neglecting the weight of the ladder, find the tension ...
Thursday, April 10, 2008 at 1:21am by lizzy

AP Physics
A uniform thin rod of length 0.3m and mass 3.5kg can rotate in a horizontal plane about a vertical axis through its center. The rod is at rest when a 3g bullet traveling in the horizontal plane of the rod is fired into one end of the rod. As viewed from above, the direction of...
Friday, February 8, 2008 at 6:10pm by Darlene

college physics
I don't know where to begin with this question. Could someone help me please? A rod of mass 4.1 kg and length 1.6 m hangs from a hinge as shown in the figure below. The end of the rod is then given a "kick" so that it is moving at a speed of 5 m/s. How high will ...
Friday, December 2, 2011 at 11:22am by peter

physics
True or false questions a)Rubbing a polythene rod with a duster gives the rod extra negative charge. b)Rubbing a polythene rod with a duster takes away positive charge from the duster. c)The duster will have the same charge as the polythene rod it has rubbed. d)The duster will...
Sunday, February 8, 2009 at 1:35am by Victor

physics
A uniform rod of mass M = 0.245kg and length L = 0.49m stands vertically on a horizontal table. It is released from rest to fall. (a) Calculate the angular speed of the rod, the vertical acceleration of the moving end of the rod, and the normal force exerted by the table on ...
Tuesday, October 30, 2012 at 11:30am by jay

Physics
The length of the rod will become exactly half of its original value. The length of the rod remains the same. The length of the rod will decrease. The length of the rod will increase. Wouldn't the length double, thus being answer D?
Wednesday, October 24, 2012 at 5:07pm by Laurie

Physics
The length of the rod will become exactly half of its original value. The length of the rod remains the same. The length of the rod will decrease. The length of the rod will increase. Wouldn't the length double, thus being answer D?
Tuesday, October 23, 2012 at 10:26am by Laurie

physics
A rigid rod holds a restaurant sign horizontally from the side of a building. The force due to gravity acting on the sign is 165N with the angle between the sign and the rod being 50 degrees. Ignoring the weight of the rod what is the magnitude of the tension in the rod?
Wednesday, February 6, 2013 at 11:39am by Carolyn

physics
Calculate the angular speed of the rod, the vertical acceleration of the moving end of the rod, and the normal force exerted by the table on the rod as it makes an angle &#952; = 49.6° with respect to the vertical. b) If the rod falls onto the table without slipping, ...

physics
If an observer is traveling parallel to a rod at twice the speed of the rod, what is does the observer perceive the length to be? Choose one answer. a. The length of the rod remains the same. b. The length of the rod will become twice its original value. c. The length of the ...
Saturday, April 30, 2011 at 10:24am by ashley --

physics
If an observer is traveling parallel to a rod at twice the speed of the rod, what is does the observer perceive the length to be? Choose one answer. a. The length of the rod remains the same. b. The length of the rod will become twice its original value. c. The length of the ...
Saturday, April 30, 2011 at 12:05am by ashley --

Physics
One cm of a 10-cm-long rod is made of metal, and the rest is wood. The metal has a density of 5000 kg/m3 and the wood has a density of 500 kg/m3. When the rod is set into pure water, the metal part points downward. How much of the rod is underwater?
Thursday, December 16, 2010 at 1:14pm by Sara

physics ( help)
The active element of a certain laser is made of a glass rod 30cm long and 1.5cm in diameter. The average coefficient of linear expansion of glass is 9 x 10^-6°C-1. If the temperature of the rod increases by 65°C, what is the increase in its volume?
Thursday, April 28, 2011 at 9:18am by UnKnown

Physics
The length of the rod will become exactly half of its original value. The length of the rod remains the same. The length of the rod will decrease. The length of the rod will increase. Wouldn't the length double, thus being answer D? No one has answered this question yet.
Monday, October 22, 2012 at 8:35pm by Laurie

physics
a rod supports a 2.35 kg lamp. a)what is the magnitude of the tension in the rod? b)calculate the components of the force that the bracket exerts on the rod.
Sunday, December 4, 2011 at 12:44pm by jessica

Physics
A 20 cm long, 180g rod is pivoted at one end. A 17g ball of clay is stuck on the other end. What is the period if the rod and clay swing as a pendulum?
Sunday, April 24, 2011 at 2:15pm by Dan

phy
1. A Uniform rod AB 3m long weighing 3 Kg is held horizontally by two strong vertical strings at its ends. A weight of 7 kg is hanging on the rod at a distance of 1m from end A and another weight of 12 Kg is hanging at 0.5 m from end B.(a)Make the free body diagram of the rod ...
Tuesday, August 24, 2010 at 10:31am by shiva

physics
A 1-kg mass (the blue mass) is connected to a 9-kg mass (the green mass) by a massless rod 67 cm long, as shown in the figure. A hole is then drilled in the rod 40.2 cm away from the 1-kg mass, and the rod and masses are free to rotate about this pivot point, P. Calculate the ...
Monday, March 26, 2012 at 8:36am by Anonymous

physics
A 1-kg mass (the blue mass) is connected to a 9-kg mass (the green mass) by a massless rod 67 cm long, as shown in the figure. A hole is then drilled in the rod 40.2 cm away from the 1-kg mass, and the rod and masses are free to rotate about this pivot point, P. Calculate the ...
Sunday, March 25, 2012 at 3:00pm by hania

physics
A 1-kg mass (the blue mass) is connected to a 8-kg mass (the green mass) by a massless rod 67 cm long, as shown in the figure. A hole is then drilled in the rod 40.2 cm away from the 1-kg mass, and the rod and masses are free to rotate about this pivot point, P. Calculate the ...
Sunday, March 25, 2012 at 11:10am by hania

physics
A 1-kg mass (the blue mass) is connected to a 9-kg mass (the green mass) by a massless rod 67 cm long, as shown in the figure. A hole is then drilled in the rod 40.2 cm away from the 1-kg mass, and the rod and masses are free to rotate about this pivot point, P. Calculate the ...
Saturday, March 24, 2012 at 8:34pm by please

physics
A 1-kg mass (the blue mass) is connected to a 9-kg mass (the green mass) by a massless rod 70 cm long, as shown in the figure. A hole is then drilled in the rod 40.2 cm away from the 1-kg mass, and the rod and masses are free to rotate about this pivot point, P. Calculate the ...
Saturday, March 24, 2012 at 3:18pm by deb

Physic
Can some one help me with this question. A uniform 119.0 cm long, 78.0 gram wooden rod is suspended from it midpoint. On one end of the rod, a mass of 350 g is attached, and on the other end a mass of 150 g is attached. A third mass of 225 g is attached at some distance x from...
Sunday, November 4, 2012 at 9:26pm by Mary Pinzon

physics
A rod of length L = 1.2 m pivots freely about one end. The rod is held horizontally and released, with no intial velocity. Find the angular velocity of the rod as it passes through the vertical orientation. (Use conservation of energy. The rotational inertia of a rod like this...
Wednesday, December 12, 2012 at 1:37am by Karan

Physics
I do not understand your formula. because the distance from the rod is much less than the rod length, assume it is an infinte rod. E= 2k*lambda/r r will be the radius of the rod plus the distance from the surface. r=0.0104m lamda is 2uC/.5 micro coulombs/meter. www.phys.uri....
Tuesday, August 25, 2009 at 12:01am by bobpursley

chemistry
What bends, the ethanol or the rod? That is not clear from your question. The charged rod will tend to align the polar ethananol molecules, so that a stream of ethanol will be attracted to the rod, bending the STREAM slightly in that direction. The force will be attraction ...
Sunday, March 9, 2008 at 12:57am by drwls

Physics
A thin, uniform rod is hinged at its midpoint. To begin with, one half of the rod is bent upward and is perpendicular to the other half. This bent object is rotating at an angular velocity of 6.8 rad/s about an axis that is perpendicular to the left end of the rod and parallel...
Saturday, November 17, 2012 at 7:45pm by greg

science
A 1.4 kg ball and a 3.0 kg ball are connected by a 1.0 m long rigid, massless rod. The rod is rotating cw about its center of mass at 24 rpm. What torque will bring the balls to a halt in 4.2 s?
Sunday, April 15, 2012 at 4:45pm by james

physics
A moving rod is 12.0 cm long and moves with a speed of 15.0 cm/s. If the magnetic field is 0.800 T, calculate (a) the emf developed, and (b) the electric field in the rod. I got a)0.0132v and b).12v/m
Saturday, October 9, 2010 at 9:26am by dude

Physics
A copper rod (length = 1.3 m, radius = 3.70 10-3 m) hangs down from the ceiling. A 8.3-kg object is attached to the lower end of the rod. The rod acts as a "spring", and the object oscillates vertically with a small amplitude. Ignoring the rod's mass, find the ...
Friday, November 30, 2012 at 8:02pm by Elizabeth

Physics 121
The disk has mass 10kg and radius 0.25m. The rod has mass 5kg, length 0.5m and radius 0.05m. The rod is split down the middle and is hinged so that its two halves can lay flat against the disk. Suppose that the disk and rod are initially rotating at 3.0rad/s around the axis ...
Sunday, May 6, 2012 at 8:14pm by Beth

Physics 121
The disk has mass 10kg and radius 0.25m. The rod has mass 5kg, length 0.5m and radius 0.05m. The rod is split down the middle and is hinged so that its two halves can lay flat against the disk. Suppose that the disk and rod are initially rotating at 3.0rad/s around the axis ...
Saturday, May 5, 2012 at 9:06pm by Max

Physics
A thin rod (length = 1.03 m) is oriented vertically, with its bottom end attached to the floor by means of a frictionless hinge. The mass of the rod may be ignored, compared to the mass of the object fixed to the top of the rod. The rod, starting from rest, tips over and ...
Thursday, August 11, 2011 at 6:18pm by Kristi

Physics
The sketch shows a mobile in equilibrium. Each of the rods is 0.16 m long, and each hangs from a supporting string that is attached one fourth of the way across it. The mass of each rod is 0.10 kg. The mass of the strings connecting the blocks to the rods is negligible. What ...
Sunday, June 10, 2012 at 7:14pm by Kate

Physics 203
A 2.4 m long rod of mass m1 = 11.0 kg, is supported on a knife edge at its midpoint. A ball of clay of mass m2 = 5 kg is dropped from rest from a height of h = 1.1 m and makes a perfectly inelastic collision with the rod 0.9 m from the point of support. Find the angular ...
Wednesday, April 13, 2011 at 7:06pm by Kayla

physics
A horizontal rod with a length of 0.250 is mounted on a balance and carries a current. At the location of the rod a uniform horizontal magnetic field has a magnitude of 6.70×10&#8722;2 and direction perpendicular to the rod. The magnetic force on the rod is measured ...
Monday, October 31, 2011 at 10:21pm by Andrea

physics
A 500 g steel block rotates on a steel table while attached to a 2.0-m-long massless rod. Compressed air fed through the rod is ejected from a Inozzle on the back of the block, exerting a thrust force of 3.5 N. The nozzle is 70^\circ from the radial line, as shown in the ...
Wednesday, November 10, 2010 at 12:26pm by Kathleen

Physics
A charge rod is brought near a pile of tiny plastic sphere. Some of the spheres are attracted to the rod, but as they touch the rod, they are flung into different directions. Explain. Thanks :)
Friday, August 31, 2012 at 11:17am by Celina

Physics
At one time, television sets used "rabbit-ears" antennas. Such an antenna consists of a pair of metal rods. The length of each rod can be adjusted to be one-sixth of a wavelength of an electromagnetic wave whose frequency is 65.0 MHz. How long is each rod?
Saturday, October 13, 2007 at 10:06pm by Mary

Physics
A thin uniform rod (length = 1.3 m, mass = 3.2 kg) is pivoted about a horizontal frictionless pin through one of its ends. The moment of inertia of the rod through this axis is (1/3)mL2. The rod is released when it is 50° below the horizontal. What is the angular ...
Tuesday, June 19, 2012 at 10:57am by Tim

Physics
A 100.0 cm long brass rod is heated from 20 degrees C to a final temp of 100 degrees C. Find the change in the length of the rod. (a-19.0x10^-6/degree for brass)
Wednesday, April 24, 2013 at 11:50am by Lashawn

A charge rod is brought near a pile of tiny plastic sphere. Some of the spheres are attracted to the rod, but as they touch the rod, they are flung into different directions. Explain. Thanks :)
Saturday, September 1, 2012 at 2:23am by Celina

physics
One end of a uniform 4.0-m long rod of weight is supported by a cable. the other end rests against the wall, where it is helf by friction. The co-efficient of static friction between the wall and the rod is .50 Determine the minimum distance,x,from point A at which an ...
Thursday, January 25, 2007 at 4:47pm by cyndi

rpi
For the stepladder shown in Fig. 12-51, sides AC and CE are each 3.34 m long and hinged at C. Bar BD is a tie-rod 0.662 m long, halfway up. A man weighing 746 N climbs 2.51 m along the ladder. Assuming that the floor is frictionless and neglecting the mass of the ladder, find...
Monday, November 15, 2010 at 1:47am by Anonymous

Physics
A rod made from insulating material carries a net charge, while a copper sphere is neutral. The rod and the sphere do not touch. (a) Is it possible for the rod and the sphere to attract one another? (b) Is it possible for the rod and the sphere to repel one another? Explain ...
Friday, September 21, 2007 at 2:33pm by Mary

Physics
A 2.0 kg ball and a 3.5 kg ball are connected by a 2.0 m long rigid, massless rod. The rod and balls are rotating clockwise about its center of gravity at 21 rpm . What torque will bring the balls to a halt in 6.0s?
Monday, January 31, 2011 at 11:23pm by Kevin

Physics
There is a rod that is 50cm long and has a radius of 1cm that carries a charge of 2uC distributed uniformly over its length. What would be the value of the magnitude of the electric field. (a) 4.0 mm from the rod surface, not either end So far I got E1/4density-2pie0r or E= 2(...
Tuesday, August 25, 2009 at 12:01am by Sammy

physics
A horizontal rod with a length of 0.250 is mounted on a balance and carries a current. At the location of the rod a uniform horizontal magnetic field has a magnitude of 6.70×10&#8722;2 and direction perpendicular to the rod. The magnetic force on the rod is measured ...
Monday, October 31, 2011 at 10:21pm by Andrea

physics
A toy consisting of two balls, each m = 0.56 kg, at the ends of a l = 0.73 m long, thin light-weight rod is shown below. Find the moment of inertia of the toy. The moment of inertia is to be found about the center of the rod.
Thursday, January 10, 2013 at 7:29pm by Anonymous

Physics
A 20 kg rod is 3 meters long and is attached to the wall by a hinge at point A and is held at the angle indicated by cable BC. Find the force in the cable and the forces in the x and y-directions at the hinge A. (center of mass in middle of rod downwards) There's a diagram...
Sunday, April 10, 2011 at 6:21pm by Beth

unp
How much thermal energy will flow per hour through a copper rod 5.00 cm in diameter and 1.50 m long, if one end of the rod is maintained at a temperature of 22.5 degree Celsius and the other end at 20.0 degree Celsius?
Wednesday, March 16, 2011 at 10:20pm by Dangadang

physics
A chandelier of mass 250 kg is hung vertically from a ceiling using a 1.25 m long brass rod of square cross-section of sides 0.4 cm each. How much will the rod stretch when the chandelier is hung? By what factor is the minimum breaking load greater than the weight of the ...
Tuesday, December 27, 2011 at 4:25am by sand

physics
A chandelier of mass 250 kg is hung vertically from a ceiling using a 1.25 m long brass rod of square cross-section of sides 0.4 cm each. How much will the rod stretch when the chandelier is hung? By what factor is the minimum breaking load greater than the weight of the ...
Monday, December 26, 2011 at 11:22pm by sand

Math
There is a horizontal rod of length L and mass M. A point mass m is vertically above the rod at a vertical distance L/4 and horizontal distance L/3 from one end of the rod.Using The Riemann sum Integral,find the magnitude and direction of the gravitational force exerted on the...
Sunday, December 14, 2008 at 1:19am by Sandhya

Physics
There is a horizontal rod of length L and mass M. A point mass m is vertically above the rod at a vertical distance L/4 and horizontal distance L/3 from one end of the rod.Using The Riemann sum Integral,find the magnitude and direction of the gravitational force exerted on the...
Thursday, December 11, 2008 at 4:19am by Sandhya

physics
a rod 300 cm long is hinged in a wall its weight is 50N. it is supported by a leg from other edge and an external weight of 80N is placed on the rod 50 cm away from the leg end.. find the tension in the leg?
Sunday, August 26, 2012 at 6:16am by umair

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