Question point) How long will it take for a 40.0 gram sample of 1-131 (half-life = 8.040 days) to decay to 10.0 grams? a 16,08 b8.04 c 24.12 d32.16​

Avery long solenoid of inner radius 2.75 cm creates an oscillating magnetic field of the form = for this solenoid, =0.00425 t and =319 rad/s. (a)what is the maximum value of the induced electric field at a perpendicular distance 1.45 cm from the axis of the solenoid? (b) what is the maximum value of the inducted electric field at a point 5.85 cm perpendicular from the axis of the solenoid?