12.4.2 Test (CST): Energy Question 20 of 20
Which person has the most potential energy?
A. A person sitting in a chair
B. A person walking
C. A person riding a bicycle
D. A person sitting at the top of a slide
SUBMIT

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

Astone is dropped with no initial velocity from the top of a cliff and hits the ground a time of 3.9 s later. what is the height of the cliff, in units of meters? you may assume that air resistance is negligible. give the answer as a positive number question 15 a figure skater is rotating at a rate of 200 revolutions per minute. what is the angular speed, in units of rad/s? 200 o 20.9 12000 o 3.33

Nacidified solution was electrolyzed using copper electrodes. a constant current of 1.18 a caused the anode to lose 0.584 g after 1.52 ✕ 103 s. given that the charge of an electron is 1.6022 ✕ 10−19 c, calculate avogadro's number. assume that copper is oxidized to cu2+ ions.