When does Olaf have more momentum? formula When he is skating with his entire body (20kg) at 12m/s.
Or
When he is chasing his head. His mass is now only 13 kg but he is moving 7 m/s faster.

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same

What do the atoms of elements in the same group have in common? a. they have the same atomic numbers. b. they have the same average atomic masses. c. they have the same number of electron shells. d. they have the same number of electrons in their outermost shells.

Consider a small frictionless puck perched at the top of a fixed sphere of radius r. if the puck is given a tiny nudge so that it begins to slide down, through what vertical height will it descend before it leaves the surface of the sphere? [hint: use conservation of energy to find the puck's speed as a func e conservation of energy to find the puck's speed as a function of its height at what value of this normal force does the puck leave the sphere? ] here on the puck.