A gold wire carries 22 A of current with a drift velocity of 4.3 × 10-3 m/s. Assume there is one free electron per gold atom, and the density of gold is 1.93 × 104 kg/m3. The molecular weight of gold is 196.97 g/mol.    Part (a)  What is the diameter of this gold wire?  d  =    m    Part (b)  For the problem above, calculate the resistance of the wire under those conditions. Assume the wire is 3.7 m in length, and the resistivity of gold is 2.44 × 10-8 Ω⋅m.  R =    Ω  Part (c)  How much power is dissipated by this wire?  P=    W

Q: A Ford Territory and a Montero Sport are traveling in the same direction at 60.0 kph on a straight h...

A:

Q: The velocity and acceleration of an object at a certain instant are i = (3.0 m/s)j %3D å = (5 m/s²)i...

A: The velocity of an object at a given instant = 3 ms j^The acceleration of an object at a given insta...

Q: identical planets with the same mass as that of Earth are positioned in a circle such that any two a...

A: When object moves it requires centripetal force which is provided by already existing force Centripe...

Q: A bicycle tire of radius 0.45 m has a piece of gum stuck on its rim. What is the angle through which...

A:

Q: 1. Given: Vector D, with horizontal and vertical components: 20 in and 30 in, respectively. Vector D...

A:

Q: Does not change when fluid cannot be compressed. O density mass flow O volume

A: Given  When the fluid is incompressible, the factor which doesn't change is......

Q: A spring is moving back and forth 27.0 times in a minute. What is the frequency of the spring?

A:

Q: A horizontal force of magnitude F = 47.6 N pushes on a block of mass m = 6.08 kg. The block is on a ...

A:

Q: Three point charges, two positive and one negative, each having a magnitude of 20 µC are placed at t...

A:

Q: A square plane, whose sides measure 2m each, is placed parallel with the direction of the electric f...

A: Express the relation for the electric flux through the plane. ϕE=EAcosθ ------(1) Here, ϕE is the el...

Q: A plastic rod 1.4 m long is rubbed all over with wool, and acquires a charge of -5e-08 coulombs. We ...

A: Given Plastic Rod =1.4mCharge=5×10-8 CLocation A =<0.7,0,0>mRod divided into 8 Pieces  

Q: A working student works at a pub during weekends. The assigned task to him is to fill drinks for cus...

A: Work done by student: W1=F.s=8.2N×50100m=4.1 Joules   Work done by friction(it will be negative beca...

Q: a (m/sec?) n D0 8 m/s n 1 4 m/s t (sec) 2

A:

Q: Two blocks, which can be modeled as point masses, are connected by a massless string which passes th...

A: In this question we have to find the speed of the block. Please give positive feedback if the answer...

Q: The drawing shows two situations in which charges are placed on the x and y axes. They are all locat...

A:

Q: 4.2 Three point masses lie at the corners of an equilateral triangle whose sides have length 1.00 m....

A: Given,  masses m1, m2 and m3 at the corners of an equilateral triangle  Sides of equilateral triangl...

Q: Ball x of mass 1.0 kg and ball Y of mass 0.5 kg travel toward each other on a horizontal surface. Bo...

A:

Q: 6. A projectile starting from ground hits a target on the ground located at a distance of 1500 meter...

A:

Q: What is the y component of F3=469 N?

A:

Q: What is the momentum of a 500-kg car, moving at 10 m/s, going 20̊ north of west direction?

A: Given Mass m = 500 kg Velocity v̅ = 10 m/s  ,20⁰ north of west

Q: 38. When a 5-kilogram mass is lifted from the ground to a height of 10 meters, the gravitational pot...

A: when the object from its initial position is lifted by height h on earth then the gravitational pote...

Q: The relation a = -k/x is defined as the particle's acceleration. It is determined through experiment...

A: The acceleration of the particle is given by a=-k/x. When the particle's velocity v=15 ft/s the dist...

Q: ft-lb R= 38.9 A certain ideal gas has a constant R: 38.9 Tb-R with k= 1-4. Find the specific heat at...

A: Given: R=38.9ft.lblb.R k=1.4

Q: Identical point charges Q are placed at each of the four corners of a 3.0 m x 4.0 m rectangle. If Q ...

A:

Q: A flywheel in the shape of a thin ring has a mass of 30 kg and a diameter of 0.96 m. A torque of 13 ...

A:

Q: Question 4 refers to a horizontal massless rope attached to a 23.0 kg box on a horizontal surface as...

A: NOTE: According to the guidelines, we can only solve one question per post. Please post other questi...

Q: A 4.6 μF capacitor is connected to a 116.2 V battery. Calculate the amount of energy stored in the c...

A:

Q: A vector has a horizontal component of -11 and vertical component of 51, what is the magnitude of th...

A: Given data:  Vector A has  Horizontal component (Ax) = -11 Vertical component (Ay) = 51 Required:  T...

Q: 96 V . 50 uF Q. 4800 uc Q. 4800 uc 70 uF 96 V v, 100 uF C. V, ? V. 40 uF 120 uF

A:

Q: Displayed to the right are two carts connected by a cord that passes over a small frictionless pulle...

A:

Q: A spring (k = 75 N/m) has an equilibrium length of 1.00 meter. The spring is compressed to a length ...

A: at highest point the spring energy will be converted into potential energy hence 12k∆x2=mghh=k2mg∆x2...

Q: I need help with this question

A:

Q: A skier moving at 4.23 m/sm/s encounters a long, rough, horizontal patch of snow having a coefficien...

A:

Q: Three equal charges (Q1, Q2, & Q3) of +5x10^-6 C (Micro-Coulomb) form the vertices of a triangle tha...

A:

Q: Give 3 applications of 0th law of thermodynamics in real life and explain how the law applies on eac...

A:

Q: A car moving with a speed of 27 m/s sounds its siren with a frequency of 1208 Hz. A motorcyclist app...

A: The wall acts like a mirror and the reflected sound is equivalent to another car moving left with sa...

Q: The magnitude of the electrostatic force between two charged objects is 10N when they are separated ...

A: Given  The magnitude of the electrostatic force between two charged objects is F1 when they are sepa...

Q: 7.  The zeroth law of thermodynamics relates to: three objects with different heat energy three obje...

A:

Q: 23. Wheel spinning down II A disk is turning clockwise at a rate of 18.0 revolutions per second. Whe...

A:

Q: what is the answer for sub-item (b) if the radius of the neutron star is 3.457 km? (express your ans...

A:

Q: Particles 1, with charge q1, and 2, with charge q2, are on the x axis, with particle 1 at x = a and ...

A:

Q: An object sits in between the focal point of concave mirror and the mirror itself. Describe the two ...

A: There should be a ray parallel to the principal axis which gets reflected from the mirror and passes...

Q: Caluculate the weight component (N), work done by applied force (J), and work done by weight compone...

A:

Q: 3. A block weighing 200 N rests on a plane inclined upward to the right at a slope of 4 vertical to ...

A: Given that:- Weight of block rest on inclined=200N Weight of block hanging=100N

Q: A certain wire has a diameter of 0.55 mm and contains 8,5 x 10^28 free electrons/m^3.If the wire has...

A: Diameter of wire = 0.55mm no. Of electron = 8.5×1028 free electron/m3 Current= 3.1 A Area A =πR2= 3....

Q: A 1500-kg car has a velocity of 25.0 m/s. If it is brought to a stop in 15.0s, what was the magnitud...

A:

Q: A cylindrical bucket 30 cm in diameter and 50 cm high weighing 25.0 N contains oil (s.g. = 0.80) to ...

A:

Q: This is the vx-tgraph for an object moving along the x-axis. Which of the following descriptions of ...

A:

Q: Calculate the displacement from the given velocity-time graph. Velocity (m/s) - Time (s) graph 45 40...

A:

Q: ball of mass equals to 0.200kg is traveling to the right at a speed of 350 m/s. The ball is hit with...

A: According to impulse momentum theorem Impulse= change in momentum

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.