Question

Check all reasons why a book was used.

It increased pressure on the gas.

It supported additional weights.

It balanced the syringe.

Answer 1

I don’t have the experiment diagram or description, so I can’t be certain. Can you say where the book was placed (on the syringe plunger, under the syringe, under the weights, etc.) or paste a photo/diagram?

Meanwhile, here’s how to decide which options are correct:

- "It increased pressure on the gas." — True if the book was placed on top of the syringe/plunger (or otherwise applied extra downward force on the gas). Extra downward force increases the force on the gas and so increases pressure.

- "It supported additional weights." — True if the book acted as a platform under the weights (or under the syringe holding the weights) so the weights rested on the book rather than directly on the apparatus or table.

- "It balanced the syringe." — True if the book was used to stabilize or counterbalance the syringe (for example placed under one end to prevent tipping or to keep the syringe level).

If you tell me where the book was placed, I’ll mark which of the three are correct.