Physics Exam revies - Feb
Quiz by Shanu Khemlani
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16 questions
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- Q1An object can float provided _________ is _____________ than the _____ of the fluid,mass .... less .... massdensity ..... less ..... densitydensity .... less ... massmass .... greater ... density30s
- Q2The buoyant force on an object is dependent onthe object's densitythe weight of the fluid displacedthe shape of the objectthe mass of the object30s
- Q3The property that most determines whether or not an object will float in oil is the object'smassdensityvolumeweight30s
- Q4Does the air exert a buoyant force on my pencil if I throw it across the room?yesneed more informationno30s
- Q5The buoyant force on an object submerged in a fluid depends on (choose 2)multiplem:/the fluid's density: the acceleration due to gravitythe object's density30s
- Q6An object is placed in a fluid. The buoyant force on the object is proportional tothe volume of the objectthe density of the objectthe density of the fluid30s
- Q7Why does a duck float?The duck weighs less than waterThe duck has less density than waterThe duck can swimThe duck has feathers30s
- Q8A wooden boat with a density of 0.48 g/cc is floating in a vat of oil whose density is 0.80 g/cc. What percentage of the boat is floating above the surface of the oil?40%60%42 %52 %30s
- Q9Oil has a smaller density than water. Therefore, an object that will float in oil willfloat in water, with more of the object submergedfloat in water, with the same amount of the object submergednot float in waterfloat in water, with less of the object submerged30s
- Q10Which has a greater buoyant force acting on it, a floating 100 g piece of wood, or a floating 50 g piece of wood?not enough informationSince both pieces of wood are floating, they experience the same buoyant forceThe 50 g piece of woodThe 100 g piece of wood.30s
- Q11A rectangular block is floating in a large pot of pure water. The block is floating with one-half of its volume submerged. Salt is slowly poured into and then dissolved into the water. What, if anything, will happen to the block as the salt is introduced into the water?block sinksblock risesnothing changes30s
- Q12A ship sailing from the ocean (salt-water) into a fresh-water harbour sinks slightly deeper into the water. Does the buoyant force on the ship change?ship floatsship sinksno change30s
- Q13The formula for density is...volume/ massmass/ accelerationmass/ volume30s
- Q14Archimedes' Principle states that...The buoyant force acting on an object equals the volume of the fluid displaced by the object.The buoyant force acting on an object will always be equal.The buoyant force acting on an object equals the weight (force of gravity) of the fluid displaced by the object.30s
- Q15What is buoyant force?An upward force exerted by fluids on an object.An downward force exerted by fluids on an object.30s