A student experimentally determines the density of a plastic cube using the caliper method, liquid displacement method, and suspension method. The cube's true density is 0.9822 g/cm3. Use the student's collected data below to answer the following questions. Student's Collected Data

Cube's Mass 0.66g
Caliper Method
Edge Length 0.85 cm
Liquid Displacement Method
Volume of Liquid 5.5 mL
Volume of Liquid + Object 6.2 mL

Required:
Determine the density of the cube for each method.

- density of the cube for Caliper Method is 1.08 g/mL

- density of the cube for Liquid Displacement Method is 0.94 g/mL

Explanation:

Given the data in the question;

The cube's true density = 0.9822 g/cm³

Student's Collected Data;

Cube's Mass = 0.66g

Caliper Method

Edge Length = 0.85 cm

Liquid Displacement Method

Volume of Liquid = 5.5 mL

Volume of Liquid + Object = 6.2 mL

For Caliper Method;

Edge Length = 0.85 cm

so the volume of the cube will be ( 0.85 cm )³ OR 0.614125 cm³ ≈ 0.61 cm³ = 0.61 mL

so Density will be;

Density = mass of cube / volume of cube

we substitute

Density = 0.66g / 0.61 mL

Density = 1.08 g/mL

Therefore, density of the cube for Caliper Method is 1.08 g/mL

For Liquid Displacement Method;

Volume of object = total volume - volume of liquid

= 6.2 mL - 5.5 mL = 0.7 mL

now, Density of object will be;

Density = mass / volume

we substitute

Density = 0.66 g / 0.7 mL

Density = 0.942857 ≈  0.94 g/mL

Therefore, density of the cube for Liquid Displacement Method is 0.94 g/mL

what is the question?

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.