Fun With Magnets !!Magnet and Clips

!Magnetic Strength Between 2 Bar Magnet !

!!Base on the result of our experiment It shows that as the number of magnet

increases the greater it’s ability to attract objects. It also shows that the increases in number if magenta the greater it’s ability of

repulsion and the ability to rotate.

Horizontal Motion Vertical Motion

Magnet Pcs. Min. Distance (cm)

# of Clips Pulled

Magnet Pcs Min. Distance (cm)

# of Clips Pulled

1 1 1 1 0.5 1

2 1 2 2 0.7 2

4 1.5 3 4 1 2

8 1 3 8 0.9 2

Attraction Repulsion Ability to Rotate

# Magnet !pcs/bar

Min. Distance!(cm)

# Magnet !pcs/bar

Min. Distance!(cm)

# Magnet !pcs/bar

Min. Distance !(cm)

1 2 1 1.5 5 1

2 1.5 2 2 4 1

3 2 3 2 3 1

4 2 4 1.5 2 1.5

5 1.5 5 2 1 2

Latent Heat of Fusion !

!It is proposed that the energy of the latent heat of fusion is required to overcome viscous drag resistance introduced at melting. Assuming that the atoms are moving with their thermal velocity in the liquid, the viscous resistance working against this movement was calculated for melts formed from highly symmetrical packing arrangements. The calculated energies correlate very well with experimentally determined latent heat values. !

Mass of Calorimeter 270.7 g

Specific of Calorimeter .22 cal/g•Cº

Specific Heat of Water 1 cal/g•Cº

Masses (g) Trial 1 Trial 2

Water + Calorimeter + Stirrer 481.1 481.4

Water Only 200 200

Water + Caloric Meter + Ice + Stirrer

482.4 509.3

Ice Only 7.1 12.6

Temp (ºC)

Initial Temp. of Ice 0ºC 0ºC

Initial Temp. of Water 38ºC 41ºC

Final Temp. of Water 24ºC 30ºC

Latent Heat (Experimental)

Latent Heat (Accepted) 80 cal/g 80 cal/g

Percentage Error E (%)