A ring weighs 6.327x10-3 N in air and 6.033x 10-3 N when submerged in water. What is the volume of the ring? What is the density of the ring? What is the ring made of?

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

How is the gravitational force related to the distance between two objects?

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