19. Fluid Mechanics
Density
19. Fluid Mechanics
Density
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- Multiple Choice
A wooden door is 1 m wide, 2.5 m tall, 6 cm thick, and weighs 400 N. What is the density of the wood in g/cm3? (use g = 10 m/s2)
848views19rank1comments - Multiple Choice
Suppose an 80 kg (176 lb) person has 5.5 L of blood (1,060 kg/m3 ) in their body. How much of this person's total mass consists of blood? What percentage of the person's total mass is blood?
824views14rank2comments - Multiple Choice
You want to verify if a 70-g crown is in fact made of pure gold (19.32 g/cm3 ), so you lower it by a string into a deep bucket of water that is filled to the top. When the crown is completely submerged, you measure that 3.62 mL of water has overflown. Is the crown made of pure gold?
722views15rank - Multiple ChoiceYou have three objects in front of you. Object A has a volume of . object B has a volume of . and object C has a volume of . They all have the same mass. What is the correct ranking of the objects from most dense to least dense?450views
- Textbook QuestionA brass wire is to withstand a tensile force of 350 N without breaking. What minimum diameter must the wire have?981views
- Textbook QuestionA square steel plate is 10.0 cm on a side and 0.500 cm thick. (a) Find the shear strain that results if a force of magnitude 9.0×10^5 N is applied to each of the four sides, parallel to the side. (b) Find the displacement x (in centimeters).1195views
- Textbook QuestionIn the Challenger Deep of the Marianas Trench, the depth of seawater is 10.9 km and the pressure is 1.16×10^8 Pa (about 1.15×10^3 atm). (a) If a cubic meter of water is taken from the surface to this depth, what is the change in its volume? (Normal atmospheric pressure is about 1.0×10^5 Pa. Assume that k for seawater is the same as the freshwater value given in Table 11.2.)1236views
- Textbook QuestionA specimen of oil having an initial volume of 600 cm3 is subjected to a pressure increase of 3.6×10^6 Pa, and the volume is found to decrease by 0.45 cm^3. What is the bulk modulus of the material and the compressibility?1269views