Scientists studying an anomalous magnetic field find that it is inducing a circular electric field in a plane perpendicular to the magnetic field. The electric field strength 1.5 m from the center of the circle is 7 mV/m. Part A At what rate is the magnetic field changing? Express your answer in milliteslas per second. 15| ΑΣΦ dB/dt = Submit Request Answer ? mT/s

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The following video shows a magnetometer recording the magnetic field of the Earth. How would you estimate uncertainty in the total magnetic field strength (seen at the top of the screen in white text)? Why would you select this uncertainty? O Recording Back Magnetometer O y=-54.25 Total Magnetic Field = 167.16 µT Magnetic Field vs Time X-151.98 Z=-43.6 -100 42 Time (s) Btotal Magnetic Field (µT)

The figure shows a circuit with an area of 0.060 m² containing a R=1.0 2 and a C = 250 μF uncharged capacitor. (Figure 1) Pointing into the plane of the circuit is a uniform magnetic field 0.25 T. In 0.010s the magnetic field reverses direction at a constant rate to become 0.25 T pointing out of the plane. Part A What maximum charge (sign and magnitude) accumulates on the upper plate of the capacitor in the diagram? Express your answer using two significant figures. V—| ΑΣΦ Q = 3 ? mC

Scientists studying an anomalous magnetic field find that it is inducing a circular electric field in a plane perpendicular to the magnetic field. The electric field strength 1.5 m from the center of the circle is 7 mV/m. Part A At what rate is the magnetic field changing? Express your answer in milliteslas per second. ΠΟΠ ΑΣΦ dB/dt = Submit Request Answer ]] ? mT/s

C A charged particle moves through a velocity selector at constant velocity. The velocity selector is configured with "crossed" electric and magnetic fields of magnitude E= 2.00 x 10 N/C and B = 0.2 T Hint a. What is the velocity of the charged particle? Velocity of the charged particle is x 10 m/s. b. When the electric field is turned off, the charged particle travels in a circular path of radíus 2 mm, as it travels through the magnetic field (still at B=0.2 T). What is the mass-to-charge ratio of the particle? Hint for (b) Mass-to-charge ratio of the particle is kg/C. (Use the "E" notation to enter your answer in scientific notation. For example, to enter 3.14 x 10-¹2, enter "3.14E-12".) Submit Question G Search or type URL % 5 A MacBook Pro 6 &

An electric current I = 0.65 A is flowing in a long wire. Consider a rectangular area with one side parallel to the wire and at a distance c = 0.026 m away from the wire. Let the dimensions of the rectangle be a = 0.018 m and b = 0.085 m. Express the magnitude of the magnetic field generated by the wire B at a distance r in terms of I and r.

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(Figure 1) shows a circuit with an area of 0.070 m² containing a R = 1.0 N resistor and a C = 230 µF uncharged capacitor. Pointing into the plane of the circuit is a uniform magnetic field of magnitude 0.11 T. In 1.0 × 10-2 s the magnetic field strengthens at a constant rate to become 0.80 T pointing into the plane. Part A What maximum charge (sign and magnitude) accumulates on the upper plate of the capacitor in the diagram? Express your answer to two significant figures and include appropriate units. µA ? Value Units Submit Request Answer Provide Feedback Figure 1 of 1 R