A parallel-plate, air-filled capacitor is being charged as in (Figure 1). The circular plates have radius 4.00 cm, and at a particular instant, the conduction current in the wires is 0.670 A.

A rocket zooms past the earth at v = 2.0 x 106 m/s. Scientists on the rocket have created the electric and magnetic fields shown in the figure.(Figure 1) Assume that B = 0.80 T and E= 8.0x105 V/m. Figure B E 2.0 × 10 m/s 1 of 1 ▼ Part A What is the electric field strength measured by an earthbound scientist? Express your answer using two significant figures. ΠΠ ΑΣΦ E = Submit Part B O Up What is the direction of the electric field measured by an earthbound scientist? Down O Left Right Into the page O Out of the page Submit Request Answer Part C B = Submit Request Answer What is the magnetic field strength measured by an earthbound scientist? Express your answer using two significant figures. [ΨΕΙ ΑΣΦ ? Request Answer B V/m ? T

HW5, Q2

A. Use Biot-Savart’s law to find the magnitude of the magnetic field at the center of a quarter-circle of wire of radius ?, carrying current ?. Show all your work. B. Give, also, the direction of the magnetic field at the center of a quarter-circle.