Physics
11th Edition
ISBN: 9781119326342
Author: CUTNELL
Publisher: WILEY
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Chapter 20.4, Problem 8CYU
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Block A, with a mass of 10 kg, rests on a 30° incline. The coefficient of kinetic friction is 0.20. The attached string is parallel to the incline and passes over a massless, frictionless pulley at the top. Block B, with a mass of 15.0 kg. is attached to the dangling end of the string. What is the acceleration of Block B in m/s?
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When current is flowing through the coil, the direction of the torque can be thought of in two ways. Either as the
result of the forces on current carrying wires, or as a magnetic dipole moment trying to line up with an external
field (e.g. like a compass). Note: the magnetic moment of a coil points in the direction of the coil's magnetic
field at the center of the coil.
d) Forces: We can consider the left-most piece of the loop (labeled ○) as a short segment of straight wire
carrying current directly out of the page at us. Similarly, we can consider the right-most piece of the loop
(labeled ) as a short segment straight wire carrying current directly into the page, away from us. Add to
the picture below the two forces due to the external magnetic field acting on these two segments. Then
describe how these two forces give a torque and determine if the torque acts to rotate the loop clockwise or
counterclockwise according to this picture?
B
In each of the following, solve the problem stated. Express your answers in three significant figures. No unit is
considered incorrect.
1. For the circuit shown, determine all the currents in each branch using Kirchhoff's Laws. (3 points)
6
5V 2
B
C
4
A
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6 VT
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T10 V
F
E
2. Compute for the total power dissipation of the circuit in previous item. (1 point)
3. Use Maxwell's Mesh to find Ix and VAB for the circuit shown. (3 points)
Ix
50 V
20
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21x
B
4. Calculate all the currents in each branch using Maxwell's Mesh for the circuit shown. (3 points)
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5ი
10
24V
2A
2002
36V
Chapter 20 Solutions
Physics
Ch. 20.2 - Prob. 1CYUCh. 20.2 - Prob. 2CYUCh. 20.3 - Prob. 3CYUCh. 20.3 - Prob. 4CYUCh. 20.3 - Prob. 5CYUCh. 20.4 - Prob. 6CYUCh. 20.4 - Prob. 7CYUCh. 20.4 - Prob. 8CYUCh. 20.5 - Prob. 9CYUCh. 20.5 - Prob. 10CYU
Ch. 20.5 - Prob. 11CYUCh. 20.6 - 12. The power rating of a 1000-W heater specifies...Ch. 20.7 - 13. A car has two headlights, and their power is...Ch. 20.7 - Prob. 14CYUCh. 20.8 - 15. In one of the circuits in the drawing, none of...Ch. 20.8 - Prob. 16CYUCh. 20.8 - Prob. 17CYUCh. 20.10 - Prob. 18CYUCh. 20.11 - Prob. 19CYUCh. 20.11 - Prob. 20CYUCh. 20.13 - Prob. 21CYUCh. 20.13 - Prob. 22CYUCh. 20 - Prob. 1FCCh. 20 - Prob. 2FCCh. 20 - Prob. 3FCCh. 20 - Prob. 5FCCh. 20 - Prob. 7FCCh. 20 - Prob. 8FCCh. 20 - Prob. 10FCCh. 20 - Prob. 12FCCh. 20 - Prob. 13FCCh. 20 - Prob. 15FCCh. 20 - Prob. 18FCCh. 20 - Prob. 20FCCh. 20 - Prob. 1PCh. 20 - Prob. 2PCh. 20 - Prob. 3PCh. 20 - Prob. 4PCh. 20 - Prob. 5PCh. 20 - Prob. 6PCh. 20 - Prob. 7PCh. 20 - Prob. 8PCh. 20 - Prob. 10PCh. 20 - Prob. 11PCh. 20 - Prob. 12PCh. 20 - Prob. 13PCh. 20 - Prob. 14PCh. 20 - Prob. 16PCh. 20 - Prob. 17PCh. 20 - Prob. 18PCh. 20 - Prob. 20PCh. 20 - Prob. 21PCh. 20 - Prob. 22PCh. 20 - Prob. 23PCh. 20 - 24. A blow-dryer and a vacuum cleaner each operate...Ch. 20 - 25. There are approximately 110 million households...Ch. 20 - Prob. 26PCh. 20 - Prob. 27PCh. 20 - Prob. 28PCh. 20 - Prob. 29PCh. 20 - *30. A piece of Nichrome wire has a radius of 6.5...Ch. 20 - Prob. 31PCh. 20 - Prob. 32PCh. 20 - 33. The rms current in a copy machine is 6.50 A,...Ch. 20 - Prob. 34PCh. 20 - Prob. 35PCh. 20 - Prob. 36PCh. 20 - Prob. 37PCh. 20 - Prob. 38PCh. 20 - Prob. 39PCh. 20 - Prob. 41PCh. 20 - Prob. 42PCh. 20 - Prob. 43PCh. 20 - Prob. 44PCh. 20 - Prob. 45PCh. 20 - Prob. 46PCh. 20 - Prob. 47PCh. 20 - Prob. 48PCh. 20 - Prob. 49PCh. 20 - Prob. 50PCh. 20 - Prob. 51PCh. 20 - Prob. 52PCh. 20 - Prob. 53PCh. 20 - Prob. 54PCh. 20 - Prob. 55PCh. 20 - Prob. 56PCh. 20 - Prob. 57PCh. 20 - Prob. 58PCh. 20 - Prob. 59PCh. 20 - Prob. 60PCh. 20 - Prob. 62PCh. 20 - 63. A 14-? coffee maker and a 16-? frying pan are...Ch. 20 - Prob. 64PCh. 20 - Prob. 65PCh. 20 - 66. The circuit in the drawing contains three...Ch. 20 - Prob. 67PCh. 20 - Prob. 68PCh. 20 - Prob. 69PCh. 20 - Prob. 70PCh. 20 - Prob. 71PCh. 20 - Prob. 74PCh. 20 - Prob. 75PCh. 20 - Prob. 76PCh. 20 - Prob. 77PCh. 20 - Prob. 79PCh. 20 - Prob. 80PCh. 20 - Prob. 81PCh. 20 - 83. Determine the current (both magnitude and...Ch. 20 - *84. Determine the voltage across the 5.0-?...Ch. 20 - Prob. 85PCh. 20 - Prob. 86PCh. 20 - Prob. 87PCh. 20 - Prob. 88PCh. 20 - Prob. 90PCh. 20 - Prob. 91PCh. 20 - Prob. 92PCh. 20 - Prob. 93PCh. 20 - Prob. 94PCh. 20 - Prob. 95PCh. 20 - Prob. 96PCh. 20 - Prob. 97PCh. 20 - Prob. 98PCh. 20 - Prob. 99PCh. 20 - Prob. 100PCh. 20 - Prob. 101PCh. 20 - Prob. 102PCh. 20 - Prob. 103PCh. 20 - Prob. 104PCh. 20 - Prob. 105PCh. 20 - Prob. 106PCh. 20 - Prob. 107PCh. 20 - Prob. 108APCh. 20 - Prob. 111APCh. 20 - Prob. 113APCh. 20 - Prob. 114APCh. 20 - Prob. 116APCh. 20 - *117. The current in the 8.00-? resistor in the...Ch. 20 - Prob. 119APCh. 20 - Prob. 120APCh. 20 - Prob. 122APCh. 20 - Series and parallel wiring are two common ways in...Ch. 20 - Prob. 126CCPCh. 20 - Prob. 127TPCh. 20 - Prob. 128TP
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