1) a(n) is an abstract data type that stores and retrieves items in a last-in-first-out manner.
a) array
b) queue
c) stack
d) vector
e) none of these

Which property of fossils allow scientists to determine the relative rock ages..

Could someone . i have tried to solve myself but my calculation is off

Awheel of mass 48 kg is lifted to a height of 0.8 m. how much gravitational potential energy is added to the wheel? acceleration due to gravity is g = 9.8 m/s2. a. 30.4 j b. 3.1 j c. 297.9 j d. 11,321 j