A helium balloon is tied to a top-pan balance. A metal block of mass 100 g is placed on the balance. The reading on the balance is 91 g. Which statement can be deduced from this experiment?

What produces a record of seismic waves? richter scale seismogram barometer seismograph

Calculate the heat capacity per object when the total energy is 4 quanta. (think of this in terms of increasing from 3.5 quanta of energy in the system to 4.5 quanta of energy in the system, if that were possible.) c4 = __ j/k/object

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.