If the mass of the earth decreased by a factor of 2 with no change in radius, your weight would:

a. increase by a factor of 4.

b. increase by a factor of 2.

c. stay the same.

d. decrease by a factor of 2.

e. decrease by a factor of 4.

People make choices about how to use resources.

Some gamma ray bursts are hypothesized to come from mergers of neutron stars or black holes. if this hypothesis is correct, what else should we in principle be able to detect from such mergers? a. gravitiational waves b. x-ray bursts c. significant disruption of gas thousands of light-years away in the surrounding galaxy d. an "afterglow" of bright visible light, lasting for weeks

Migrant workers who fill employment needs in their host country often send remittances to their home countries