Cable Definition and 611 Threads

Hey! How can I calculate what should be the cable diameter by the amper / watt? Best Regards, Liad.

Hi everybody, I have a very simple question for programmers and automation professionals, My friend told me that I can use the program National Instruments LabView as an Oscilloscope through the serial cable! Is this true? and what are the limits of this advantage? I'm using this...

Homework Statement he cable of the 1,800 kg elevator cab in Fig. 8-51 snaps when the cab is at rest at the first floor, where the cab bottom is a distance d = 3.7 m above a cushioning spring whose spring constant is k = 0.15 MN/m. A safety device clamps the cab against guide rails so that a...

Homework Statement If anyone could clarify this statement for me, I'm having a bit of difficulty interpreting what the heck I'm supposed to do: "For a given potential difference V0 between the inner and outer conductors and for a given fixed value of b, determine the inner radius a for which...

We did a lab in physics class to determine the coefficient of static and sliding friction. basically we used a spring scale to determine how many Newtons of force was required to just get a block moving and then to keep it moving. We needed to do several trial runs with a slow, fast, and faster...

Torque--Sign hanging from a cable Homework Statement A 120cm-wide sign hangs from a 5.4 kg, 200cm-long pole. A cable of negligible mass supports the end of the rod as shown in the figure What is the maximum mass of the sign if the maximum tension in the cable without breaking is 330N...

Homework Statement In fig. 13-32, a 50.0 kg uniform square sign, 2.00 m on a side, is hung from a 3.00 m horizantal rod of negligible mass. A cable is attached to the end of the rod and to a point on the wall 4.00 m above the point where the rod is hinged to the wall. (a) What is the...

Hi, I am doing an experiment with a coaxial cable and i want to Count out it expected RC-constant for the cable. I have measured the resistance for the cable, but when i count the RC, the resistansen that will be used only is the half of it resistans measured in the beginning. Why...

Homework Statement A uniform cable hanging over the edge of a tall building is 40 ft long and weighs 60 lb. How much work is required to pull 10 ft of the cable to the top? Homework Equations Density=3/2 ft/lb The Attempt at a Solution Ok, the problem is this: I can solve this...

cable problem Hi, I'm doing some self study on the subject of cables and I am curious about the reversed process of working out the linear mass density when given the shape of the cable (instead of the usual case of determining the shape of the cable given the density). The text I am...

I have a beam suspended by two cables with two weights suspended by the beam. The weight of the beam is negligible. How would I find the resting angles of the cables.

Homework Statement The voltage V in a power cable varies sinusoidally with time t. At t = 1, the voltage is 12 volts. The voltage rises to its maximum level of 20 volts by t = 6. At t = 11, the voltage returns to 12 volts and then begins to fall. The minimum voltage is 4 volts. Homework...

dear all can anyone tell me.. if i have a transmission line passed above a metalic surface, there will be a parasitic capacitance between the line and the surface. and it induces interference how can i measure it. and if there is any refrenece about the allowable induce voltage...

Homework Statement There is a box that weighs 25N hanging by two cables. Both of the angles between the cables and the box on both opposite sides are 30 degrees. Find the tension in the cables. If the angles were changed to 5 degrees each how would the tension change.Homework Equations The...

(Solved) Hanging Cable (Projectile Motion?) Homework Statement A perfectly flexible cable has length L. Initially, the cable is at rest, with a length x_0 of it hanging vertically over the edge of a table. Neglecting friction, compute the length hanging over the edge after a time t. Assume...

Homework Statement A 36.0 kg uniform beam is attached to a wall with a hinge while its far end is supported by a cable such that the beam is horizontal. http://a1.educog.com/res/msu/physicslib/msuphysicslib/24_Statics_Equilibrium/graphics/prob20_beamhinge2.gif If the angle between the beam...

I have a locking device with a cable running through it (think of pieces of PVC pipe with a cable through them). I apply pressure and pull on one end of the cable tightening it and pulling the pieces together so I can lock it with a cam device. To lock it presently it requires 1200 psi...

A 700 kg elevator suspended by a cable accelerates upwards at 3 m/s^2. The force exerted by the cable on the elevator is? (use g=10 m/s^2) m=700 kg a= 3.0 m/s^2 Fnet= 700 kg * 3.0 m/s^2 = 2,100.0 N Upward force Fnet= 700 kg * 10 m/s^2 = 7,000.0 N Downward force...

An 8.9kg watermelon is placed at one end of a 6.1m, 238 N scaffolding supported by two cables. One supporting cable is at the opposite end of the scaffolding, and the other is 0.76 m from the watermelon. The acceleration of gravity is 9.8 m/s^2. How much tension is in the cable at the end...

Homework Statement An 88kg construction worker sits down 2.0 m from the end of a 1430 kg steel beam to eat his lunch. The cable supporting the beam is rated at 15,000 N. Should the worker be worried? To answer this, determine the tension in the cable. Homework Equations The...

What is the current carrying capacity of a 1000 sq. mm. 3&1/2 core alluminium cable laid in air [in case of single run, in case of double run...]??

Homework Statement A freight elevator weighing 3000 pounds is supported by a 12 foot long cable that weighs 14 pounds per linear foot. Approximate the work required to lift the elevator 9 feet by winding the cable onto a winchHomework Equations W = int(f)dyThe Attempt at a Solution The work...

Pretty sure I got it right just going to ask you guys to make sure. Homework Statement An elevator with a mass of 1.10e3 accelerates upward at 0.45 m/s squared. What is the force acting on the elevator's support cable? Homework Equations F=ma The Attempt at a Solution The 9.8...

Hello. I'm new here and in need of some help. I have a problem here in which two cables are supporting a weight of 631 N. The right-hand cable has a tension of 680 N and and makes an angle of 32 degrees with the ceiling. The left-hand cable has a tension of T and makes an angle of X at the...

The cable cars in San Francisco are pulled along their tracks by an underground steel cable that moves along at 9.5 mph. The cable is driven by large motors at a central power station and extends, via an intricate pulley arrangement, for several miles beneath the city streets. The length of a...

Homework Statement A tugboat of mass m pulls a ship of mass M, accelerating it. Assume that water friction on the two vessels' is negligible. If the force acting on the tug's propellar is F, what is the tension, T, in the cable connecting the two ships (Variables: F, M, m)...

Hi, As you know the capacitance per unit length of a standard coaxial cable is C_{coax} = \frac{2 \pi \varepsilon_{0} \varepsilon_{r}}{\ln{\frac{b}{a}}} where b is the radius of the cable and a is radius of the central conductor. . If we only want to know the capacitance of a...

Homework Statement A 14 kg loudspeaker is suspended 2.0m below the ceiling by two 3.0m long cables that angle outward at equal angles. What is the tension in the cables? Homework Equations F=ma The Attempt at a Solution I drew the free body diagram, and I broke the tension of...

Homework Statement The diagram below depicts a cross section of coaxial conductor with an inner wire of diameter and an outer conducting sheath of inside diameter , and some material placed in the space between the two wires. Suppose that you have a coaxial wire with di= 2.85 mm, do= 6.25...

Homework Statement http://members.shaw.ca/code/2.133.JPG Two Cables tied together at C are loaded as shown. Determine the range of values of Q for which the tension will not exceed 270N in either cable. Solve graphically and Numerically. Homework Equations law of cos, law of sine...

Homework Statement A 235lb sign is supported from a wall by a cable inclined 37 degrees with the horizontal, and a brace perpendicular to the wall. Find the tension in the cable and the compression in the boom. The answers are 390.5 and 311.9. But I have no idea how they got to those...

Homework Statement "A coaxial cable consists of an inner wire and a concentric cylindrical outer conductor. If the conductors carry equal but opposite charges, show that there is no net charge on the outside of the outer conductor. Homework Equations Gauss's Law The Attempt at a...

If net neutrality isn't enforced, and businesses are allowed to manipulate the pipes of the internet possibly allowing only a small number of websites who can afford the fee faster transmission, do you predict that The Internet will just be another version of cable or satelitte tv , where , just...

Assume a weight hanging vertically in a strong, thin and inelastic long cable which is fixed in the top end. The top end cable is then released. When will the mass at the bottom part of the cable start moving downwards?? a) Immediately. In this case information is transferred faster than...

Anyone has come across the problem of a cable deflection (static) under the effects of wind? Iam looking into the problem of the deflection of the electric contact wire of a train (the wire above the train from which it extracts electric energy) under the effects of side winds and I wonder how...

Homework Statement A seagoing crane lifts a sealed safe from a sunken ship. The average density of the safe is 5.3 grams/cc and its mass is 120 kg. What is the tension in the lifting cable when the safe is still submerged? Homework Equations Pressure = density *gravity* height*...

Hello guys, If form example I am given the sequence impedance of a cable ( positive, negative, zero) Will I use all of these impedances to calculate the voltage drop of the cable? or only the positive impedance? Anyone here knows where can I find table of xlpe cable (various sizes) for...

Homework Statement GIVEN: a=radius of inner electrode = 0.05 cm b=radius of outer electrode = 0.5 cm Vo = 130 V QUESTION: What is the electric field at surface of the inner electrode in units of V/m? Homework Equations Given equations Potential at radius r b/w inner&outer electrodes...

I'm in need of an equation that relates the loss of heat (in power) of a cable to ambient air to various parameters such as diameter, temperatures of air and cable, and all other variable that may play a role. My research online has produced some results, but I haven't quite found what I'm...

As shown in the picture there is no force applied over the cable.The self weight of cable is 313.9N(32KG) .And there is a sag of 250mm in the middle .I need to find the tension in the supports. The length of the complete cable is 11.31m .We r not give the length between two supports. If you...

I have been stumped by this problem... If you have a vertial cable under tension of say 800N and you apply a horizontal tension at its mid point (node A), how can you calculate the horizontal deflection U of node A?? Can't wait to solve this! A

This questions asks what is the work done by the tension in the cable. And, the book answered that it is equal to the work done by the gravity. But shouldn't it be more than the work done by the gravity? (because there is also a horizontal displacement) see the attached image

hiya guys, I'm having a large amount of trouble with a problem that I've been working through (currently revising for an uncoming exam in electromagnetism, along with a lot of other things). the problem is stated as follows (condensed): coaxial cable - inner cylinder radius a, out cylinder...

Homework Statement A massive steel cable drags a 20.0 kg block across a horizontal, frictionless surface. A 90.0 N force applied to the cable causes the block to reach a speed of 3.60 m/s in 2.40 s. What is the difference in tension between the two ends of the cable? Homework Equations F=ma...

Tension in support cable. Help! A wrecking ball (weight = 4500 N) is supported by a boom, which may be assumed to be uniform and has a weight of 3610 N. As the drawing shows, a support cable runs from the top of the boom to the tractor. The angle between the support cable and the horizontal is...

Homework Statement A cable hangs between two poles of equal height and 39 feet apart. At a point on the ground directly under the cable and x feet from the point on the ground halfway between the poles the height of the cable in feet is h(x)=10 +(0.4)( x^{1.5}) The cable weighs 12.5...

http://img185.imageshack.us/img185/8830/cablesyv1.gif You're looking at the design for my recent lab we did. Now, you would think, given the geometry of the loadings (i.e. post heights, eye bolt height, weight heights, distances from a specified origin) that the x components of the tension...

Why is the coaxial cable impedance independent of it's length? I am considering the model shown in the attached picture. Since the resistance, capacitance and inductance are all dependent of the length of the cable in one way or another how come the impedance is not? I also can't find any...

Homework Statement I have to find the magnetic vector potential in a round coaxial cable. The internal conductor has a finite (known) conductivity. The external conductor is a perfect electrical conductor. Both the radius of the internal and the external conductors are known. I have to assume...

Read please example 2 of http://cnx.org/content/m14060/latest/ . P1 P2 On picture 2 there are those two tension labeled by T which are equal. Why equal? And shouldn't they exert just torque? I know we are considering the pulley to be massless, so no torques. So is it correct to...