1. The triple beam balance is a first- class lever; the fulcrum is between the two weights. As the liquid in the Petri dish evaporates, which way do you think that the balance pointer will move?
A. up
B. down
C. no movement

Arollercoaster car at the top of a hill has potential energy kinetic energy chemical energy light energy

How many moles of gas are present if p=11 atm, v=12l, t=185k?

Americium-241 undergoes fission to produce three neutrons per fission event. if a neutron-absorbing material is mixed in with this sample so that the rate of neutron production drops down to 1.8 neutrons per fission event, which will be effective at achieving a critical mass? check all that apply. remove a deflective shield surrounding the sample. remove absorbent material mixed in with the sample. compress the sample of americium-241.