A Heavy Crate Containing Artworks from the National Gallery of Victoria

question 23

Multiple Choice

A heavy crate containing artworks from the National Gallery of Victoria is to be shipped to London to be part of an exhibition. The artworks weigh 800 kg and are securely fastened in cubic crate 1 m on a side. This crate is placed on top of a rubber mat in the back of a cargo plane. The rubber mat has an uncompressed thickness of 2 cm and a Young's Modulus of 100 000 N m-2. By how much will the mat be compressed when the crate is placed on it?

• A)0.03 mm.
• B)0.3 mm.
• C)3 mm.
• D)0.1 mm.
• E)1 mm.

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Definitions:

Chlorination

A chemical process that introduces chlorine atoms into a molecule.

Acetone

A volatile, colorless liquid used as a solvent and an antiseptic; it's the simplest and most important of the ketones.

ΔH°

The standard enthalpy change of a reaction, indicating the overall heat absorbed or released under standard conditions.

Bond Dissociation Energies

The energy required to break a specific chemical bond in a molecule, indicating the strength of the bond.