Acommonly used unit of mass in the english system is the pound-mass, abbreviated lbm, where 1 lbm = 0.454 kg. what is the density of glycerine in pound-mass per cubic foot? (assume the density of glycerine is 1.26 ✕ 103 kg/m3.)

The density of glycerine will be

Explanation:

Density is defined as the mass contained per unit volume.

Given:

Density of glycerine=

1 lbm = 0.454 kg

1 kg =

Thus

Also

Putting in the values we get:

Thus density of glycerine will be

answer: a ball

explanation: because it will bounce

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.