RP5 - Density - Part 1: Calculating the density of a regularly shaped object. Flashcards

1
Q

Outline the basic steps of the practical.

A
  1. Measure the dimensions of the regular shape and calculate the volume
  2. Measure the mass of the shape using a calibrated balance
  3. Calculate density from the mass and volume
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2
Q

Give the formula for the volume of a prism

A

Volume = area of face x height

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3
Q

What equation is used to calculate volume of a rectangular prism?

A

Volume = Length x Width x Height (this also applies to cubes)

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4
Q

Give the formula for the volume of a sphere

A

Volume = 4/3 x 𝜋 x radius3 V = 4/3𝜋r3

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5
Q

What equation is used to calculate density?

A

Density = Mass / Volume OR p=mv

Denisty = P, Mass = M, Volume = V

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6
Q

What unit is used for density?

A

kg/m^3

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7
Q

What piece of equipment is used to measure the object’s mass? What must you do before using it?

A

A digital balance, which should be zeroed before placing the object on it to avoid a zero error.

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8
Q

How do you convert from g/cm^3 to kg/m^3?

A

Multiply the value by 1000.

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