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Problem 1 If the density of an object is exactly equal to the density of a...

Problem 1 If the density of an object is exactly equal to the density of a fluid, the object will a. float b. sink c. stay at any height in the fluid, as long as it is totally immersed d. none of above

Problem 2 In a constant-volume gas thermometer, if the pressure of the gas decreases, will the temperature of the gas a. increase b. decrease c. remain the same d. none of above

Problem 3 As you heat a block of aluminum from 0 C to 100 C, its density a. increase b. decrease c. remain the same d. none of above

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Answer #1

problem 1 )

c. stay at any height in the fluid, as long as it is totally immersed

because as per buoyancy force = density * volume * g

density equal to fluid density then object it stay at any height when it is immersed

problem 2 )

at constant volume ideal gas follow ,pressure is directly proportional to temperature

so if you decrease the pressure temperature will decrease

b. decrease

problem 3)  

b. decrease

density = M/volume

volume will increase due to volume expansion so density will decrease .

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