Some call it "air resistance", and others just call it "drag".
Answer:
The magnetic field is 1.16 T.
Explanation:
speed, v = 10% of speed of light = 3 x 10^7 m/s
diameter, d = 54 cm
radius, r = 0.27 m
charge, q = 1.6 x 10^-19 C
mass, m = 1.67 x 10^-27 kg
Let the magnetic field is B.
The centripetal force is balanced by the magnetic force.

B. The gravity acceleration is in the same direction as the force of gravity, and thus towards the centre of the earth
Is recommend attaching the answer choices; Meters, Liters, Grams are three basic ones
Human error (average human reaction time is .2 seconds)