When two wires of identical dimensions are used to hang 25.0 kg weights, wire A is...
When two wires of identical dimensions are used to hang 25.0 kg weights, wire A is observed to stretch triply as much as wire B.
From this observation, you can make the following conclusions about the Young's moduli of these wires:
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When two wires of identical dimensions are used to hang 25.0 kg
weights, wire A is...
3) Consider two perpendicular wires as shown. There's an infinite wire with current Ii flowing fr...
3) Consider two perpendicular wires as shown. There's an infinite wire with current Ii flowing from left to right, and a wire stub of length L with current I2 flowing towards the top of the page. There's a gap of length D between the two wires. a) Calculate the force on wire 2 (the wire with current /2) due to wire 1. If the everyday statement of Newton's third law holds, what should be the force on wire 1 due...
The magnetic field inside wires In a regular household wire, current I flows (uniformly!) down a...
The magnetic field inside wires In a regular household wire, current I flows (uniformly!) down a long straight conducting wire of radius R. Assume the metal is a "magnetically linear" material, and find the magnetic field B as a function of distance s from the center of the wire (both inside and outside the wire) What are all the bound currents in this problem? (Check yourself by verifying that the total bound current is zero) What can you say about...
In the circuit shown in the diagram below, two thick wires connect a 1.4 volt battery...
In the circuit shown in the diagram below, two thick wires connect a 1.4 volt battery to a Nichrome (NIC) wire. Each thick connecting wire is 14 cm long, and has a radius of 9 mm. The thick wires are made of copper, which has 8.35+28 mobile electrons per cubic meter, and an electron mobility of 0.00434 (m (V/m). The Nichrome wire is 8 cm long, and has a radius of 4 mm. Nichrome has 9e+28 mobile electrons per cubic...
3) Two thin conducting wires are used to connect very large conducting plates to opposite poles...
3) Two thin conducting wires are used to connect very large conducting plates to opposite poles of a battery. Chemical reactions within the battery produce an emf E that "pushes" one electr after another onto the wire connected to the negative terminal of the battery, and "pulls" one electron after another from the wire connected to the positive terminal of the battery on electrons pulled in electrons battery pashed out conducting plate a) Given that positive charges repel each other...
A) In lecture we derived the estimate of B in WLS as Derive A.wls when p-1. (It should have a for...
a) In lecture we derived the estimate of B in WLS as Derive A.wls when p-1. (It should have a form similar to simple linear regression.) (Hints: Notice that we can write a weighted average as analogues of the sums of squares identities we've used; you should derive these if you need to use them.) . You may need to use weighted b) Assume we have the following data: T1 T2 y2 That is, we have a total of n...
Two Nichrome wires The following questions refer to the circuit shown in the figure, consisting of...
Two Nichrome wires
The following questions refer to the circuit shown in the figure,
consisting of two flashlight batteries and two Nichrome wires of
different lengths and different thicknesses as shown (corresponding
roughly to your own thick and thin Nichrome wires). The thin wire
is 54 cm long, and its diameter is 0.25 mm. The thick wire is 15 cm
long, and its diameter is 0.39 mm.
(a) The emf of each flashlight battery is 1.5 volts. Determine
the steady-state...
5) The force between two parallel wires carrying electric current is repulsive when: A) The magnitude...
5) The force between two parallel wires carrying electric current is repulsive when: A) The magnitude of the current of both wires are the same. B) The direction of current in wires are opposite C) One of the wires is carrying no current D) The direction of the currents in wires are the same. E) Wires carrying different current values. 6) Ampere's law provides a convenient way of calculating: A) Electric field due to current distribution. B) Magnetic field due...
An Atwood's machine consists of two weights, m, = 3.2 kg and m2 = 2 kg,...
An Atwood's machine consists of two weights, m, = 3.2 kg and m2 = 2 kg, connected by a by a string over a pulley of mass m, -1.7 kg and radius r = 0.2 m. Assume the pulley is a uniform solid cylinder (disk). The system is released from rest when my is 1.6 m above the floor, and my begins on the floor. Assume there is no friction in the pulley. Take the ground to be the location...
EM 98 A model for circuits Part 1: Current and resistance C. Light a bulb using...
EM 98 A model for circuits Part 1: Current and resistance C. Light a bulb using a battery and a single wire. Observe and record the behavior (ie., brightness) of the bulb when objects made out of various materials are inserted into the circuit. (Try materials such as paper, coins, pencil lead, eraser. your finger, etc.) What is similar about most of the objects that let the bulb light? D. Carefully examine a bulb. Two wires extend from the filament...
There will be a flow from the battery when the switch is open and, for the sake of discussion, we...
need help to do the pressure and flow parts, heres a pic of the
circuit
There will be a flow from the battery when the switch is open and, for the sake of discussion, we'1 call that flow I glow. Assume that the obstacle presented by any of the identical bulbs is L no matter what flow goes through it. (This is equivalent to; assume that the bulbs are ideal') Copy the following table into your pre-lab Table 6; Pressure...
3) Consider two perpendicular wires as shown. There's an infinite wire with current Ii flowing from left to right, and a wire stub of length L with current I2 flowing towards the top of the page. There's a gap of length D between the two wires. a) Calculate the force on wire 2 (the wire with current /2) due to wire 1. If the everyday statement of Newton's third law holds, what should be the force on wire 1 due...
In the circuit shown in the diagram below, two thick wires connect a 1.4 volt battery to a Nichrome (NIC) wire. Each thick connecting wire is 14 cm long, and has a radius of 9 mm. The thick wires are made of copper, which has 8.35+28 mobile electrons per cubic meter, and an electron mobility of 0.00434 (m (V/m). The Nichrome wire is 8 cm long, and has a radius of 4 mm. Nichrome has 9e+28 mobile electrons per cubic...
3) Two thin conducting wires are used to connect very large conducting plates to opposite poles of a battery. Chemical reactions within the battery produce an emf E that "pushes" one electr after another onto the wire connected to the negative terminal of the battery, and "pulls" one electron after another from the wire connected to the positive terminal of the battery on electrons pulled in electrons battery pashed out conducting plate a) Given that positive charges repel each other...
a) In lecture we derived the estimate of B in WLS as Derive A.wls when p-1. (It should have a form similar to simple linear regression.) (Hints: Notice that we can write a weighted average as analogues of the sums of squares identities we've used; you should derive these if you need to use them.) . You may need to use weighted b) Assume we have the following data: T1 T2 y2 That is, we have a total of n...
Two Nichrome wires
The following questions refer to the circuit shown in the figure,
consisting of two flashlight batteries and two Nichrome wires of
different lengths and different thicknesses as shown (corresponding
roughly to your own thick and thin Nichrome wires). The thin wire
is 54 cm long, and its diameter is 0.25 mm. The thick wire is 15 cm
long, and its diameter is 0.39 mm.
(a) The emf of each flashlight battery is 1.5 volts. Determine
the steady-state...
5) The force between two parallel wires carrying electric current is repulsive when: A) The magnitude of the current of both wires are the same. B) The direction of current in wires are opposite C) One of the wires is carrying no current D) The direction of the currents in wires are the same. E) Wires carrying different current values. 6) Ampere's law provides a convenient way of calculating: A) Electric field due to current distribution. B) Magnetic field due...
An Atwood's machine consists of two weights, m, = 3.2 kg and m2 = 2 kg, connected by a by a string over a pulley of mass m, -1.7 kg and radius r = 0.2 m. Assume the pulley is a uniform solid cylinder (disk). The system is released from rest when my is 1.6 m above the floor, and my begins on the floor. Assume there is no friction in the pulley. Take the ground to be the location...
EM 98 A model for circuits Part 1: Current and resistance C. Light a bulb using a battery and a single wire. Observe and record the behavior (ie., brightness) of the bulb when objects made out of various materials are inserted into the circuit. (Try materials such as paper, coins, pencil lead, eraser. your finger, etc.) What is similar about most of the objects that let the bulb light? D. Carefully examine a bulb. Two wires extend from the filament...
need help to do the pressure and flow parts, heres a pic of the
circuit
There will be a flow from the battery when the switch is open and, for the sake of discussion, we'1 call that flow I glow. Assume that the obstacle presented by any of the identical bulbs is L no matter what flow goes through it. (This is equivalent to; assume that the bulbs are ideal') Copy the following table into your pre-lab Table 6; Pressure...
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