I need help with these three questions I add the my results from lab 7 on the last paper

All the problems need to show the procedure to get the final answers. 1. A student measured the mass of a meter stick to be 150 gm. The student then placed a knife edge on 30-cm mark of the stick. If the student placed a 500-gm weight on 5-cm mark and a 300-gm weight on somewhere on the meter stick, the meter stick then was balanced. Where (cm mark) did the student place the 300- gram weight?volume WA -WW plastic cylinder 23 23 23 D= WPA - 20 0.88g / cm) ( withus) -( we tws )w-(WSA-VS.)- 93 - 59 - 8 4 + + D= 0.80 g / ch ? EGG 131L, Lab 8 Manual, 90 points Alcohol D= WSA- WSL 70-63 7 8 - 0. 875 WSA - WSW - 70- 62 D = . 87 9 1 cm 3 + + 4. Conclusion (16 points) Aluminum Block 2. 82 - 2.7 alcohol For the most part the lab was pretty simple . It was simple to find the density 2.7 X10o= 4.41. .27-.21 as both the formulas and data were given. Plastic cylinder ++ .81 $ 100 . 8.8 - 0.95 -xloo = 7.31. =7.4 Making it a lot easier to plug in the data into the formula . Maki'm it . 95 easy to follow. + + 5. Application (20 points) Use Archimedes' Principle to solve the following problem. You need show the procedure. An iceberg is floating on the sea. The density of ice is 0.917 g/cm', and the density of seawater is 1.03 g/cm'. If the portion of the iceberg above the sea is 1000 ft'. How many cubic feet are under the sea? DICE = 0.917 glen" IFt= 30.48 Dw = 1. 03 9 / (m 3 1 100 off ) = 30480 con 1600 x 30. 48 5 - 283 16 84 16 . 592 Cm VFor OF iceberg , = 2. 38 17 x10 cm Iceberg Till volume = ( Vootion + 2. 8 817 x10? (m )3 WA = DXV = 0. 917 ( vboston + 2. 8817x10? (m)" DW = 1.03 917 ( vboston ) +. 917 x 2.8317 Xla? 0. 917 ( vballon) + 2. 6475 x10?= 1.03 0 2. 6 4 25 x107 = 1. 03 ( vb ) -. 917 = 0. 917 ( vbotton) + 2.6425 x10 90/9 2. 6425 x10? = 0. 113 (ub) 2.3385 x108 2. 6412 x 10 7 = V. = 2.3385x10cm =D 30. 48 8258 ftok 0. 1132. Refer to Lab 8 (a) A sinker of 4 Oz is weighed to be 3 OZ in water. How many Oz will it weigh in the alcohol used in Lab 8? (15 points) EGG 131L, Summer, Exam 4, 80 points (b) An iceberg with a cuboid shape is floating on the sea. The density of ice is 917 kg/m', and the density of seawater is 1030 kg/m'. If the volume of the iceberg under the sea is 10 cubic miles and the height of the iceberg above the sea is 100 ft, how many acres is the horizontal area of the iceberg? (20 points)