3. Another friend from chem class has a mother who is a chemist. Your friend's mother invites the class to
visit her lab and observe one of her experiments. In
her experiment, she super-cools a
pure sample of atoms to such a low
temperature (almost absolute zero)
that the atoms form a "super-atom"
where all of the particles exist in
the same energetic state at once!
What's really cool is when light
travels through this sample, it even
slows down! What is the sample's state?

first let us lay out the formula for potential

and kinetic energy:

pe = mgh

ke = (mv^2)/2

where: m=mass, v=velocity, g=gravitational

acceleration, h=height

calculating for mass using the known values of

pe:

340j = m (9.81 m/s^2) (50ft) (1m/3.28ft)

m = 2.27 kg

the law of conservation of energy states that

energy is neither created nor destroyed. therefore, the change in kinetic

energy from 50 ft to 35 ft would be equal to the change in potential energy

from 50 ft to 35 ft. however it would be opposite in signs since one is losing

while other is gaining.

ke(35ft) – ke(50ft) = - [ pe(35ft) – pe(50ft]

ke(50ft) = 0 since the brick is initially at rest

ke(35ft) = 340j - 2.27kg (9.81 m/s^2) (35ft)

(1m/3.28 ft)

ke(35ft)

= 102.38 j

thats a little if u want the answer just look it up on google thats what i do haha : )

what is the question?

the awnser is group 12