If a planets orbital radius is doubled, what happens to the length of a year on that planet? A)
It will remain the same.
B)
It will become twice as long.
9
It will become about 8 times as long.
D)
It will become about 2.8 times as long.

two charges are fixed in place on the x-axis as shown. the charge at x = 0 is negative and has magnitude q = 2 μcoulombs (1 μcoulomb = 10-6 coulombs). the charge at x = d, (d = +12 cm), is positive and has magnitude q = 4 μcoulombs. find a point x = xo along the x-axis at which the electric field is zero.

d) physical means can be used to separate the components of air.