A toroid is made of 2 000 turns of wire of radius 2.00 cm formed into a donut shape of inner radius 10.0 cm and outer radius 14.0 cm. When a 30.0-A current is present in the toroid, the magnetic field at a distance of 11.0 cm from the center of the toroid is
a. 0.0857 T.
b. 0.109 T.
c. 0.120 T.
d. 0.600 T.
e. 0.685 T.
B
You might also like to view...
The Milky Way is part of I. a poor cluster. II. a rich cluster. III. the Virgo Cluster. IV. the Local Group
a. I and III b. I and IV c. II and III d. II and IV e. just III
Slanting Surfaces With Friction: Two packages are connected by a very light string that goes over an ideal pulley as shown in the figure. Package A has a mass of 3.0 kg and can slide along a rough plane inclined at 30° above the horizontal. The string acts on package A parallel to the surface of the plane. The coefficient of static friction between package A and the plane is 0.40. What minimum mass should package B have in order to start package A sliding up the ramp?
Fill in the blank(s) with the appropriate word(s).
Why would a hotter star appear blue-white while a cooler star appear red or not be visible at all?
What will be an ideal response?
A child is trying to throw a ball over a fence. She gives the ball an initial speed of 8.00 m/s at an angle of 40.0° above the horizontal. The ball leaves her hand 1.00 m above the ground and the fence is 2.00 m high
The ball just clears the fence while still traveling upwards. How far is the child from the fence? A) 0.732 m B) 1.58 m C) 2.69 m D) 3.81 m E) 7.46 m