proton s pain on a photograph and find HOws a circular arc of radius 9.5 cm....
proton s pain on a photograph and find HOws a circular arc of radius 9.5 cm. How fast was the proton moving? 3. (15 pts) In Fig. 1, a 30.0 cm × 60.0 cm rectangular circuit containing a 15.0 2 resistor is perpendicular to a uniform magnetic field that starts out at 0.45 T and steadily increases to 2.25 T in 5.0 seconds. While this field is changing, what does the ammeter read? (10