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College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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
Transcribed Image Text:In a demonstration of Archimedes' principle you find some objects can float above water surface
whereas some sink. So, your conclusion from these observations for a floating object, is that the
O object's weight is greater than the weight of displaced water
O the object's weight is equal to the weight of water displaced
the object's weight can't be compared to the weight of water displaced
object's weight is less than the weight of water displaced
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- A cube of some unknown substance sits on the surface of water. The cube has a mass of 0.450 kg and a volume of 0.000720 m^3.How much additional mass can be placed on top of the cube without it sinking? [The entire cube will be stationary, but submerged.]arrow_forwardA large rectangular cube made of wood has the follow dimentions: a height, h = 2m, and an area od A = 0.25m^2. The wood that the cube is made of has a density of 800kg/m^3. The cube is then place vertically in water where it floats to rest. The density of the water is 1000kg/m^3. Then the cube is pushed down slightly (by a distance y) and released. The resulting motion is simple harmonic motion. A) Determine the mass of the cube. B) Determine the depth,d, that the cube will float. C) If the cube is pushed further down under water by a distance, y, write an expression for the net force on the block in terms of: y,A,g,p. Where g=9.8m/s^2 D)Use the expression for the net forcee found in part C), and apply newton's second law (Fnet = ma) to the situation of the cube that is being pushed down slightly to derive an equation for the vertical accerlation (ay) (hint: dont forget to pick a positive direction) Compare your results from part D) to the equation for simple harmonic motion using…arrow_forwardWhile sitting on a boat floating on a small pond, you drop an anchor into the water. The anchor immediately sinks to the bottom. Does the presence of the anchor in the water cause the pond to get shallower, deeper or stay the same compared to when the anchor was on the boat? Explain your answer.arrow_forward
- A hydrometer is a device used to measure the density of a liquid. It is a cylindrical tube weighted at one end, so that it floats with the heavier end downward. The tube is contained inside a large "medicine dropper," into which the liquid is drawn using the squeeze bulb (see the drawing). For use with your car, marks are put on the tube so that the level at which it floats indicates whether the liquid is battery acid (more dense) or antifreeze (less dense). The hydrometer has a weight of W-6.32 x 102 N and a cross-sectional area of A - 9.26 x 10³ m². How far from the bottom of the tube should the mark be put that denotes (a) battery acid (p=1280 kg/m²) and (b) antifreeze (p-1073 kg/m³)? (a) h= (b) h- i 0.07 i 0.084 m m Hydrometer Marks for two types of liquids.arrow_forwardThe iceberg that sunk Titanic was estimated to be 150 m in length and 33 m above the water the ocean surface. If the density of ice is 917 kg/m³ and the density of seawater is 1025 kg/m³, how much of the iceberg lied below the surface of the water? O 11.5% 89.5% 89.2% 11.8%arrow_forward
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