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Cube Problems-Applied Physics-Assignment, Exercises of Applied Chemistry

This course includes Motion, Oscillations, waves and propagation, Electric Charge and Coulomb Law, Electric Field, Electric Potential, Capacitors and Dielectric, Current and Resistance, AC and DC, Magnetic fields, Ampere Law and Faraday law, Maxwell equations and Traveling waves. This file includes: Solid, Cube, Density, Conduction, Electron, Average, Drift, Speed, Resistivity, Direction, Magnetic, Force, Current

Typology: Exercises

2011/2012

Uploaded on 07/31/2012

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PH-101 Introductory Physics
Assignment #3 (Chap 27, 29, 30, 31)
Date: 09-05-2011 Submission Date: 16-05-2011
1) A solid cube of silver (density = 10.5 g/cm3) has a mass of 90.0 g. (a) what is the resistance
between opposite faces of the cube? (b) Assume each silver atom contributes one conduction
electron. Find the average drift speed of electrons when a potential difference of 1.00 × 10-5 V is
applied to opposite faces. The atomic number of silver is 47, and its molar mass is 107.87 g/mol.
2) Material with uniform resistivity ρ is formed into a wedge as shown in Figure.1. Show that the
resistance between face A and face B of this wedge is
Figure.1
3) In Figure.2, the cube is 40.0 cm on each edge. Four straight segments of wire ab, bc, cd, and
da form a closed loop that carries a current I = 5.00 A, in the direction shown. A uniform
magnetic field of magnitude B = 0.0200 T is in the positive y direction. Determine the magnitude
and direction of the magnetic force on each segment.
Figure.2
4) A conductor suspended by two flexible wires as shown in Figure.3 has a mass per unit length of
0.040 0 kg/m. What current must exist in the conductor in order for the tension in the supporting
wires to be zero when the magnetic field is 3.60 T into the page? What is the required direction
for the current?
Figure.3
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PH-101 Introductory Physics

Assignment #3 (Chap 27, 29, 30, 31) Date: 09-05-2011 Submission Date: 16-05-

  1. A solid cube of silver (density = 10.5 g/cm^3 ) has a mass of 90.0 g. (a) what is the resistance between opposite faces of the cube? (b) Assume each silver atom contributes one conduction electron. Find the average drift speed of electrons when a potential difference of 1.00 × 10-5^ V is applied to opposite faces. The atomic number of silver is 47, and its molar mass is 107.87 g/mol.

  2. Material with uniform resistivity ρ is formed into a wedge as shown in Figure.1. Show that the resistance between face A and face B of this wedge is

Figure.

  1. In Figure.2, the cube is 40.0 cm on each edge. Four straight segments of wire — ab , bc , cd , and da — form a closed loop that carries a current I = 5.00 A, in the direction shown. A uniform magnetic field of magnitude B = 0.0200 T is in the positive y direction. Determine the magnitude and direction of the magnetic force on each segment.

Figure.

  1. A conductor suspended by two flexible wires as shown in Figure.3 has a mass per unit length of 0.040 0 kg/m. What current must exist in the conductor in order for the tension in the supporting wires to be zero when the magnetic field is 3.60 T into the page? What is the required direction for the current?

Figure.

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  1. For the system of capacitors shown in Figure.4, find (a) the equivalent capacitance of the system, (b) the potential across each capacitor, (c) the charge on each capacitor?

Figure.

  1. In Figure.5, the bar magnet is moved toward the loop. Is Va- Vb positive, negative, or zero? Explain.

Figure.

  1. The plane of a square loop of wire with edge length a = 0.200 m is perpendicular to the Earth’s magnetic field at a point where B = 15.0 μT, as shown in Figure.6 The total resistance of the loop and the wires connecting it to a sensitive ammeter is 0.500 Ω If the loop is suddenly collapsed by horizontal forces as shown, what total charge passes through the ammeter?

Figure.

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