A student lifts a bucket with a 98 N force in 30 seconds out of a well. If the bucket is lifted 30 m:
(a) How much work is done on the bucket by the student
(b) How much power is exerted by the student?​

Awave with a frequency of 500 hz is traveling at a speed of 100 m/s.what is the wavelength?

Awhite-blue star is hotter than a red star. select the best answer from the choices provided true or false

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