A raised object has energy in its energy stores. What two words complete the sentence?

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

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

Whithin which type of system is neither the total mass nor the total energy conserved ? a. open b. connected c. isolated d. closed