Welcome to the Quiz!
This quiz contains 4 questions from a mix of 1 subtopics.
A cuboid object has a mass of 20 g and dimensions 5 cm X 2 cm X 10 cm. Calculate the density of the cuboid in kg/m3.
200 kg/m3
0.0002 kg/m3
200000 kg/m3
0.2 kg/m3
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A digital mass balance read 3 g before the student placed an irregular shaped object on the balance. After the object is placed on the balance it reads 127 g. What is the mass of the object?
127 g
it is impossible to say because the balance had a zero error
124 g
130 g
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Why is the mass of the irregular object measured before placing it in the Eureka can?
it is quicker
it doesn't matter which order you do it as long as both mass and volume are measured
when the object is placed in the water, it will get wet and influence the mass reading
measuring the mass of the object after it has been in the water will result in a mass reading which is too low.
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A student drops the irregular object into the Eureka can. How could they improve the accuracy of this step?
place the object in the Eureka can and then fill with water to prevent water being spilt
carefully lower the object into the full Eureka can to prevent water splashing out
when the object is dropped into the Eureka can, refill it with approximately the right amount of water that was spilt
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