Which statement below correctly describes earth's gravity?

a. the pull of earth's gravity depends only on the mass of the object.
b. the pull of earth's gravity on an object is not affected by the object's distance from earth.
c. as objects get farther from earth, the pull of earth's gravity increases.
d. as objects get closer to earth, the pull of earth's gravity increases.

Which is not a source of noise pollution? a)airplanes b)acid rain c)machines d)cars

Urgent pls a. coal consumption levels off and remains flat. b. petroleum, natural gas, and renewables show an increase in consumption c. more nonrenewable resources continued to be consumed than renewable. d. there is little projected increase in nuclear energy use. e. carbon dioxide emissions are projected to decline as we approach 2040. global energy consumption is defined as the total energy used by an individual or organizations from around the world. use the graph above to analyze the projected energy consumption from now until 2040. which statements in the prompt apply? a) a, b, d b) b, c, d c) a, c, d d) a, b, c, d

At what time will the interfering waves have an amplitudeof zero?