A basketball with mass m = 0.625 kg is accelerated upward by a basketball player's hand, which applies a straight upward normal force to the basketball. In order for the basketball to accelerate upward at a rate of 16.1 m/s^2, what must be the magnitude of the normal force applied by the player's hand to the ball?

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