It takes four barbarians to turn the wheel below. how many barbarians would it take if the wheel radius were doubled and the axle radius stayed the same?

a. fewer than four barbarians.
b. exactly four barbarians.
c. more than four barbarians.
d. not enough information.

Which lists the fundamental forces in order, from strongest to weakest? strong nuclear, weak nuclear, electromagnetic, gravitational strong nuclear, electromagnetic, weak nuclear, gravitational gravitational, weak nuclear, electromagnetic, strong nuclear electromagnetic, gravitational, strong nuclear, weak nuclear