Q: A 2.60-N metal bar, 0.850
A 2.60-N metal bar, 0.850 m long and having a resistance of 10.0 Ω, rests horizontally on conducting wires connecting it to the circuit shown in Fig. P27.62. The bar is in a unifor...
See AnswerQ: One method for determining the amount of corn in early Native American
One method for determining the amount of corn in early Native American diets is the stable isotope ratio analysis (SIRA) technique. As corn photosynthesizes, it concentrates the isotope carbon-13, whe...
See AnswerQ: A plastic circular loop has radius R, and a positive charge
A plastic circular loop has radius R, and a positive charge q is distributed uniformly around the circumference of the loop. The loop is then rotated around its central axis, perpendicular to the plan...
See AnswerQ: A conducting bar with mass m and length L slides over horizontal
A conducting bar with mass m and length L slides over horizontal rails that are connected to a voltage source. The voltage source maintains a constant current I in the rails and bar, and a constant, u...
See AnswerQ: Figure E27.49 shows a portion of a silver ribbon with
Figure E27.49 shows a portion of a silver ribbon with z1 = 11.8 mm and y1 = 0.23 mm, carrying a current of 120 A in the +x-direction. The ribbon lies in a uniform magnetic field, in the y-direction, w...
See AnswerQ: A long wire carrying 6.50 A of current makes two
A long wire carrying 6.50 A of current makes two bends, as shown in Fig. P27.67. The bent part of the wire passes through a uniform 0.280-T magnetic field directed as shown and confined to a limited r...
See AnswerQ: The rectangular loop shown in Fig. P27.68 is pivoted
The rectangular loop shown in Fig. P27.68 is pivoted about the y-axis and carries a current of 15.0 A in the direction indicated. Fig. P27.68: (a). If the loop is in a uniform magnetic field with...
See AnswerQ: The rectangular loop of wire shown in Fig. P27.69
The rectangular loop of wire shown in Fig. P27.69 has a mass of 0.15 g per centimeter of length and is pivoted about side ab on a frictionless axis. The current in the wire is 8.2 A in the direction s...
See AnswerQ: A uniform bar of length L carries a current I in the
A uniform bar of length L carries a current I in the direction from point a to point b (Fig. P27.70). The bar is in a uniform magnetic field that is directed into the page. Consider the torque about a...
See AnswerQ: The loop of wire shown in Fig. P27.71 forms
The loop of wire shown in Fig. P27.71 forms a right triangle and carries a current I = 5.00 A in the direction shown. The loop is in a uniform magnetic field that has magnitude B = 3.00 T and the same...
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