open plastic soda bottle with an opening diameter of 2.0 cm is placed on a table. A uniform 2.25 T magnetic field directed upward and oriented 30° from vertical compasses the bottle. Part A What is the total magnetic flux through the plastic of the soda bottle? Express your answer using two significant figures. Η ΑΣΦ Þ= 6.1 Submit Previous Answers Request Answer ? X Incorrect; Try Again; 3 attempts remaining Wb

A 0.56 m copper rod with a mass of 5.00x10-2 kg carries a current of 10 A in the positive x direction. Let upward be the positive y direction. Part A What is the magnitude of the minimum magnetic field needed to levitate the rod? Express your answer using two significant figures. Hνα ΑΣφ B = T

A wire with a length of 3.5 m and a mass of 0.74 kg is in a region of space with a magnetic field of 0.76 T. Part A What is the minimum current needed to levitate the wire? Express your answer using two significant figures. νΠ ΑΣφ I = A

A 10 cm x 10 cm square is bent at a 90° angle. A uniform 5.70x10-2 T magnetic field points downward at a 45° angle.(Figure 1) You may want to review (Pages 843-845). For help with math skills, you may want to review: The Vector Dot Product Figure 45% 5 cm 18 B 1 1 of 1 5 cm 10 cm Part A What is the magnetic flux through the loop? Express your answer with the appropriate units. Value Submit HÅ Provide Feedback Units Request Answer □】?

The uniform 30.0 mT magnetic field in the figure points in the positive z-direction. An electron enters the region of magnetic field with a speed of 5.50 x 106 m/s and at an angle of 30° above the xy-plane. (Figure 1) Figure X Z 000 30° 12 1 of 1 Part A Find the radius r of the electron's spiral trajectory. Express your answer with the appropriate units. I JA Value Submit Part B DO Request Answer Find the pitch p of the electron's spiral trajectory. Express your answer with the appropriate units. μÅ Value Units Submit Request Answer Return to Assignment Units www ? Provide Feedback ?

A small bar magnet experiences a 1.60×10-2 N. m torque when the axis of the magnet is at 45.0° to a 6.00×10-2 T magnetic field. Part A What is the magnitude of its magnetic dipole moment? Express your answer in ampere meteres squared. VGI ΑΣΦ Submit Request Answer 2) ? A.m²

A 68.0-cm-diameter cyclotron uses a 450 V oscillating potential difference between the dees. Part A What is the maximum kinetic energy of a proton if the magnetic field strength is 0.740 T? Express your answer with the appropriate units. Value Submit Part B μA Submit Units Request Answer IV—| ΑΣΦ 3 How many revolutions does the proton make before leaving the cyclotron? ? Request Answer ?

In a physics laboratory experiment, a coil with 160 turns enclosing an area of 10.4 cm² is rotated in a time interval of 4.40x10-2 s from a position where its plane is perpendicular to the earth's magnetic field to one where its plane is parallel to the field. The earth's magnetic field at the lab location is 7.0x10-5 T. Part B What is the magnetic flux through each turn of the coil after it is rotated? Express your answer using two significant figures. 15. ΑΣΦ Submit Part C Request Answer What is the average emf induced in the coil? Express your answer using two significant figures. Submit 195] ΑΣΦ Request Answer ? V Wb

A pair of point charges, q=+8.50 C and g'= -5.50 μC, are moving as shown in the figure (Figure 1) with speads = 9.50-104 m/s and v' = 7.00-10 m/s. The charges are at the locations shown in the figure. Figure 1.300 m 0 0.400 m ▸ Part A What is the magnitude of the magnetic field produced at the origin? Express your answer in teslas. 15] ΑΣΦ ? + √x √x XX IXT 10 B- 1.094 10- Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining Part B Part C What is the magnitude of the magnetic force that q' exerts on g? Express your answer in newtons. ΤΕΙ ΑΣΦ ? P= Submit Request Answe N

a. The circle below represents a Brunton compass. What is the bearing of the following objects with respect to you if the needle of the compass points to the following directions? Express the reading in quadrantal and azimuthal notation. Note that magnetic north is denoted by 0°. Hint: You must first use geometric construction to find the center of the circle. 0° A Direction Quadrantal Azimuthal A В В E