Which of the following provides the best analogy for an electron in an atomic orbital
a.) a cow grazing in a pasture
b.) a bird resting on a tree branch
c.) and ants crawling on the surface of a leaf
d.) a bee hovering around a beehive

What is the angular momentum of the bar about the axle?

Ways that industry and agriculture use physical properties to separate substances

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 740 n/m. it is initially at rest on an inclined plane that is at an angle of theta= 26 with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is uk = 0.17. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. the block's initial mechanical energy is 9.472 j. b. if the spring pushes the block up the incline, what distance l in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.