One kind of potential energy is elastic potential energy. this is the kind of energy present in a rubber band that is stretched. when the rubber band is released, the elastic potential energy is converted to kinetic energy. elastic potential energy is also present in a muscle that is contracted, or tensed.

the diaphragm is a large muscle that is used to breathe. contracting the diaphragm causes air to move into the lungs. when the diaphragm is relaxed, air moves out of the lungs as is converted to kinetic energy.
a.
chemical potential energy
b.
light energy
c.
elastic potential energy
d.
heat energy

Part of molten rock at mid-ocean ridges

Use the gizmo to find the concentration of the mystery ch3cooh. use the titrant and indicator shown below perform the titration. what is the titrant volume? titrant analyte indicator titrant volume analyte concentration naoh ch3cooh phenophthalein select one: a. 20.0 ml b. 27.0 ml c. 30.0 ml d. 24.0 ml

Two nitro no2 groups are chemically bonded to a patch of surface. they can't move to another location on the surface, but they can rotate (see sketch at right). it turns out that the amount of rotational kinetic energy each no2 group can have is required to be a multiple of ε, where =ε×1.010−24 j. in other words, each no2 group could have ε of rotational kinetic energy, or 2ε, or 3ε, and so forth — but it cannot have just any old amount of rotational kinetic energy. suppose the total rotational kinetic energy in this system is initially known to be 32ε. then, some heat is removed from the system, and the total rotational kinetic energy falls to 18ε. calculate the change in entropy. round your answer to 3 significant digits, and be sure it has the correct unit symbol.