Bobbers Floats Corks
Thursday, September 2nd, 2010
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1. A girl is floating in a freshwater lake with her head just above the water. If she weighs 610N, what is the volume of the submerged part of her body?
2. A fishing bobber made of cork floats with one-tenth of its volume below the water's surface. What is the density of cork?
3. A test tube standing vertically in a test tube rack contain 2.5 cm of oil(p = 0.81g/cm) and 6.5 cm of water. What is the pressure exerted by the two liquids on the bottom of the test tube.
1. By Archimedes' Principle the weight of water displaced must also be 610 N hence mass of water displaced = 610/9.8 = 62.44 kg. The volume of the water displaced = 62.24/1000 = 0.06224 m^3
2 Let the mass of cork be M kg. As it is floating the mass of water displaced must also be equal to M kg. Let the volume of cork be V. The volume of water displaced is V/10 m^3. so we have
M/[V/10] = 1000 kg m^-3 or 10 (M/V) = 1000 kg m^-3 or density of cork d is given by
d = M/V = 100 kg m^-3
3. The pressure P' at the bottom would be P + 2.5x0.81x980 + 6.5x1x980 dyne /cm^2 with P as atmospheric pressure which is 1012928 dyne /cm2 or
P' = 1012928 + 8354.5 = 1021273.5 dyne / cm^2
FEATURED PRODUCTS:
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 48 1in ROUND BALL BOBBERS FLOATS CORKS fishing Tackle  US $11.99
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 50 Assorted SLIP BALSA CORKS BOBBERS FLOATS Fishing NIP US $19.99
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 50 ASSORTED ROUND BALL BOBBERS FLOATS CORKS fishing US $13.99
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48 1in ROUND BALL BOBBERS FLOATS CORKS fishing Tackle US $11.99
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50 Assorted SLIP BALSA CORKS BOBBERS FLOATS Fishing NIP US $19.99
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50 ASSORTED ROUND BALL BOBBERS FLOATS CORKS fishing US $13.99
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 50 ASSORTED ROUND BALL BOBBERS FLOATS CORKS fishing US $13.99
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 3 Saltwater Poppin Floats Cork Bobber US $2.25
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 48 1in ROUND BALL BOBBERS FLOATS CORKS fishing Tackle US $11.99
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 50 ASSORTED ROUND BALL BOBBERS FLOATS CORKS fishing US $13.99
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 50 ASSORTED ROUND BALL BOBBERS FLOATS CORKS fishing US $13.99
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 50 Assorted SLIP BALSA CORKS BOBBERS FLOATS Fishing NIP US $19.99
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 48 1in ROUND BALL BOBBERS FLOATS CORKS fishing Tackle US $11.99
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 50 Assorted SLIP BALSA CORKS BOBBERS FLOATS Fishing NIP US $19.99
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 50 ASSORTED ROUND BALL BOBBERS FLOATS CORKS fishing US $13.99
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 50 ASSORTED ROUND BALL BOBBERS FLOATS CORKS fishing US $13.99
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 Lot 50 Pencil Float Cork Crappie Catfish Bobber Bream US $.99
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 NEW 5 PACK Fishing Floats Bobber Cork Crappie Catfish US $.99
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 50 Assorted SLIP BALSA CORKS BOBBERS FLOATS Fishing NIP US $19.99
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 48 1in ROUND BALL BOBBERS FLOATS CORKS fishing Tackle US $11.99
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 50 ASSORTED ROUND BALL BOBBERS FLOATS CORKS fishing US $13.99
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 50 ASSORTED ROUND BALL BOBBERS FLOATS CORKS fishing US $13.99
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 FISHING Tackle SINKER HOOKS Cork FLOAT BOBBER BASS NIP US $3.99
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 50 Assorted SLIP BALSA CORKS BOBBERS FLOATS Fishing NIP US $19.99
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 48 1in ROUND BALL BOBBERS FLOATS CORKS fishing Tackle US $11.99
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 50 ASSORTED ROUND BALL BOBBERS FLOATS CORKS fishing US $13.99
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 50 ASSORTED ROUND BALL BOBBERS FLOATS CORKS fishing US $13.99
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 48 1in ROUND BALL BOBBERS FLOATS CORKS fishing Tackle US $11.99
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 50 Assorted SLIP BALSA CORKS BOBBERS FLOATS Fishing NIP US $19.99
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 50 Assorted SLIP BALSA CORKS BOBBERS FLOATS Fishing NIP US $19.99
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 50 ASSORTED ROUND BALL BOBBERS FLOATS CORKS fishing US $13.99
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 50 ASSORTED ROUND BALL BOBBERS FLOATS CORKS fishing US $13.99
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 Vintage Wood Bait Fish Fishig Float Bobber Cork Tackle US $1.99
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Check out these fine shops that offer Bobbers Floats Corks products:
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Premier Plastics Round Bobbers $2.79 Easy-to-see ? Black/Hot Pink Made from durable plastic Float high and cast far Ideal for multiple species Your tackle box is incomplete without a few quality floats like these easy-to-see, multi-species Round Bobbers by Premier Plastics. Designed to float high even in rough conditions, the Round Bobbers are made durable and will not hamper your ability to cast or set the hook. Ideal for any condition, bright, night, overcast or windy. |
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Bass Pro Shops Weighted Round Foam Floats $2.99 Weighted floats cast better and floatupright every time. Durable foam won?t crack orbreak like plastic bobbers. 3 Orange and 3Chartreuse bobbers per package. |
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Bass Pro Shops Weighted Torpedo Foam Floats $2.99 Weighted floats cast better and floatupright every time. Durable foam won?t crack orbreak like plastic bobbers. 3 Orange and 3Chartreuse bobbers per package. |
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Bass Pro Shops Premium Balsa Spring Floats - Pencil $5.49 Our pencil spring floats are made of premium balsa, allowing gentle presentations and smooth drifts. Balsa floats are durable and won?t crack like plastic bobbers. 6" stem. 6 pack. |
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Bass Pro Shops Premium Balsa Spring Floats - Oval $5.49 Our oval spring floats are made of premium balsa, allowing gentle presentations and smooth drifts. Balsa floats are durable and won?t crack like plastic bobbers. 6 pack. |
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Bass Pro Shops Premium Balsa Slip Floats - Pencil $5.49 Our pencil slip floats are made of premium balsa, allowing gentle presentations and smooth drifts. Balsa floats are durable and won?t crack like plastic bobbers. 5'' tube. 6 pack. |
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Bass Pro Shops Premium Balsa Slip Floats - Oval $5.49 Our oval slip floats are made of premium balsa, allowing gentle presentations and smooth drifts. Balsa floats are durable and won?t crack like plastic bobbers. 6 pack. |
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Corks And Forks $15.63 Corks And Forks |
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Wine Corks Jigsaw Puzzle $18.98 Wine Corks Jigsaw Puzzle |
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Premier Plastics Pear Bobbers $2.79 4 pack includes two 1'' and two 1-1/4" bobbers Color: Black/Hot Pink Bright, easy-to-see Made from high-impact polystyrene Sonically welded for durability These Pear Bobbers by Premier Plastics may be the brightest, easy-to-see bobbers you?ll ever use. Manufactured from high-impact polystyrene and sonically welded for durability, these Pear Bobbers float high and when the pink disappears you know it?s time to set the hook. 4 pack, includes two 1'' and two 1-1/4" bobbers. Color: Black/Hot Pink. |
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Hope Floats $8.99 Hope Floats |
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Valentino Water Key Corks $10.99 Package of 24 assorted synthetic water key corks. |
A great place to shop for Bobbers Floats Corks products is Amazon.
Lasso Rig (for Gar)