College Physics
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ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A spring scale calibrated in kilograms is used to determine the density of a rock specimen. The reading on the spring scale is 0.45 kg when the specimen is suspended in air and 0.36 kg when the specimen is fully submerged in water. If the density of water is 1000 kg/m3, what is the density of the rock specimen?
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- The density of a composite is 1.7 g/cm3. The density of an unknown fluid is 2.2 g/cm3. An object made of the composite will _____ in the unknown fluid.arrow_forwardA scientist is calculating the density of an ore sample. The scien- tist measures that the ore sample weighs 22.4 N in air. When the sample is suspended by a thin light cord and totally immersed in water, the tension in the cord is 14.2 N. What is the density of the ore sample that the scientist calculates. You can assume that any buoyant force from air is negligible.arrow_forwardA cube of wood having an edge dimension of 18.7 cm and a density of 651 kg/m° floats on water. (a) What is the distance from the horizontal top surface of the cube to the water level? cm (b) What mass of lead should be placed on the cube so that the top of the cube will be just level with the water surface? kgarrow_forward
- An undersea chamber is spherical with an external diameter of 5.60 m. The mass of the chamber, when occupied, is 66400 kg. It is anchored to the sea bottom by a cable. (Note: The density of seawater is 1025 kg/m3) What is the tension of the cable and what is the buoyant force on the chamber?arrow_forwardThe gravitational force exerted on a solid object is 5 N. When the object is suspended from a spring scale and submerged in water, the scale reads 3.5 N. Find the density of the object.arrow_forwardA scale is used to measure the weight of an object and it is 5.37 N. When the object is fully immersed in water, the scale reads only 3.43 N. What is the density of the object?arrow_forward
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