An object is attached to a vertical ideal massless spring and bobs up and down between the two extreme points A and B.
When the kinetic energy of the object is a minimum, the object is located:

A) 1/ √2 times the distance from A to B.
B) midway between A and B.
C) at either A or B.
D) 1/4 of the distance from A to B.
E) 1/3 of the distance from A to B.

What happens to atoms and chemical bonds during a reaction?

Which statements about tornadoes are true? check all that apply. (a) about 12,000 tornadoes hit the united states every year. (b) a tornado looks like a funnel. (c) tornadoes are deadly atmospheric storms that cause millions in damages each year. (d) tornadoes can reach wind speeds of more than 300 miles per hour. (e) kansas is the state with the most tornadoes. (f) you will always notice a funnel before a tornado strikes.

Consider a hydrogen atom in the ground state. what is the energy of its electron? =e= jj now consider an excited‑state hydrogen atom. what is the energy of the electron in the =5n=5 level? =e5= j