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PHYS1121-PHYS1141-PHYS1131-Physics 1A T1 2025

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Watch the video below. It defines isothermal, isobaric and isovolumetric processes.

Define the processes in the image below.

 

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Adiabatic process Adiabatic free expansion

What will happen to the temperature when the membrane is broken?

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Given that 1 mol of an ideal gas has a volume of 24.5 L at room temperature and pressure, how many mols should be found in the 60mL of air in the syringe?

= mols

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Why is it important that we let the syringe cool down before adding more mass?

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The experiment you are about to see is measuring isothermal compression.

During the experiment process, masses are added to the top of the syringe. We always wait a while between adding masses to the syringe; why?

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The temperature change in the syringe is measured with a low temperature thermistor. The response time on the thermistor is around half a second. Why is it not possible to measure the temperature instantaneously?

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True or false; this week's lab requires a lot of work and you won't be able to get a pass mark without knowing how to calculate the work done, heat exchange or total change in energy for various thermodynamic processes.

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The

radius of the Earth is 21 km greater at the equator to at the poles. Due to this effect where is g

going to be largest?

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In this lab, you will be determining the moment of inertia of two point masses. You'll first need to determine it theoretically, then experimentally, and compare.

The formula for the moment of inertia of a point mass system is

What is the correct formula for the absolute uncertainty in ?

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You have begun the first part of the experiment, but the graphs don't look right. What could be the issue? Select all that apply. 

(This is the part with the green motion tracker).

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