Fill in the blank. the gravitational attraction between two objects will if one object acquires more mass.

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.

An electric power distributor charges residential customers $0.10 per kilowatt-hour (kwh). the company advertises that "green power" is available in 150 kwh blocks for an additional $4 per month. (green power is generated from solar, wind power, and methane sources.) if a certain customer uses an average of 391 kwh per month and commits to one monthly 150 kwh block of green power, what is her annual power bill

Is a volume of space that is empty of matter.