---
title: "AP Physics 2 Qualitative/Quantitative FRQ Practice"
description: "113 Qualitative/Quantitative Translation questions written in the AP format, each scored part by part."
canonical: "https://fiveable.me/ap-physics-2-revised/frqs/qualitative-quantitative-translation"
type: "frq-type-practice"
subject: "AP Physics 2"
---

# AP Physics 2 Qualitative/Quantitative FRQ Practice

## What the Qualitative/Quantitative FRQ asks

The Qualitative/Quantitative Translation (QQT) question is FRQ 4 on the AP Physics 2 exam. You decide whether a claim about a scenario is correct and justify it without equations, derive an expression, then check whether the expression agrees.

- **15–20 min**: suggested on the exam
- **8 points**: across parts A to C
- **95 min**: for all four FRQs

| Part | What it asks | Points |
| --- | --- | --- |
| A: Claim and reasoning | Whether a claim is correct, justified without equations | 3 |
| B: Derivation | An expression derived from a physics principle | 4 |
| C: Consistency | Whether your expression is consistent with a claim | 1 |

## How Qualitative/Quantitative FRQ practice works

1. **Read the full question.** The scenario, its figures, and all three parts, A through C, laid out the way the exam shows them.
2. **Write on an 18-minute timer.** Inside the 15 to 20 minutes the exam suggests for this question. Pause it or turn it off, and your response saves as you go.
3. **Submit for a score out of 8.** Your response is scored against the scoring guidelines written for that question. Your first score is included.

## All 113 questions

### Unit 9: Thermodynamics (18)
- [Gas pressure and temperature in rigid containers](/ap-physics-2-revised/frq-practice?id=6977f1e61fb1cc32fbb2505b&type=frq-4-qualitative-quantitative-translation)
- [Monatomic ideal gas heating in rigid container](/ap-physics-2-revised/frq-practice?id=698a9d48e97825fc4c8a3bb0&type=frq-4-qualitative-quantitative-translation)
- [Constant volume heating of ideal gas; pressure and internal energy changes](/ap-physics-2-revised/frq-practice?id=698a9db0e97825fc4c8a3bb2&type=frq-4-qualitative-quantitative-translation)
- [Isobaric expansion of ideal monatomic gas](/ap-physics-2-revised/frq-practice?id=698a9e35e97825fc4c8a3bb8&type=frq-4-qualitative-quantitative-translation)
- [Ideal gas heating at constant volume](/ap-physics-2-revised/frq-practice?id=698a9fcbe97825fc4c8a3bc3&type=frq-4-qualitative-quantitative-translation)
- [Monatomic ideal gas isobaric and adiabatic processes](/ap-physics-2-revised/frq-practice?id=698aa084e97825fc4c8a3bc8&type=frq-4-qualitative-quantitative-translation)
- [Ideal gas heating at constant volume pressure increase](/ap-physics-2-revised/frq-practice?id=698aa130e97825fc4c8a3bcd&type=frq-4-qualitative-quantitative-translation)
- [Isothermal compression of ideal gas with thermal reservoir](/ap-physics-2-revised/frq-practice?id=698aa2fbe97825fc4c8a3bdc&type=frq-4-qualitative-quantitative-translation)
- [Ideal monatomic gas constant-pressure heating process](/ap-physics-2-revised/frq-practice?id=698aa381e97825fc4c8a3bde&type=frq-4-qualitative-quantitative-translation)
- [Ideal gas equilibrium through piston pressure and temperature differences](/ap-physics-2-revised/frq-practice?id=698aa616e97825fc4c8a3bf0&type=frq-4-qualitative-quantitative-translation)
- [Ideal monatomic gas isothermal and adiabatic compression processes](/ap-physics-2-revised/frq-practice?id=698aa6d0e97825fc4c8a3bf7&type=frq-4-qualitative-quantitative-translation)
- [Ideal gas behavior during isochoric heating and isobaric expansion](/ap-physics-2-revised/frq-practice?id=698aa764e97825fc4c8a3bfe&type=frq-4-qualitative-quantitative-translation)
- [Monatomic ideal gas constant volume heating](/ap-physics-2-revised/frq-practice?id=698aa8a0e97825fc4c8a3c09&type=frq-4-qualitative-quantitative-translation)
- [Ideal gas thermodynamic processes with pressure and volume constraints](/ap-physics-2-revised/frq-practice?id=698aa929e97825fc4c8a3c0c&type=frq-4-qualitative-quantitative-translation)
- [Isobaric heating of monatomic ideal gas with piston](/ap-physics-2-revised/frq-practice?id=698aa9f3e97825fc4c8a3c12&type=frq-4-qualitative-quantitative-translation)
- [Ideal gas heating in constant volume container](/ap-physics-2-revised/frq-practice?id=698aaac2e97825fc4c8a3c1a&type=frq-4-qualitative-quantitative-translation)
- [Ideal gas mixing and thermal equilibrium temperature](/ap-physics-2-revised/frq-practice?id=698aab26e97825fc4c8a3c1d&type=frq-4-qualitative-quantitative-translation)
- [Isothermal compression of ideal gas with thermal reservoir contact](/ap-physics-2-revised/frq-practice?id=698aabbee97825fc4c8a3c21&type=frq-4-qualitative-quantitative-translation)

### Unit 10: Electric Force, Field, and Potential (18)
- [Charged sphere equilibrium between parallel plates](/ap-physics-2-revised/frq-practice?id=698a9d89e97825fc4c8a3bb1&type=frq-4-qualitative-quantitative-translation)
- [Parallel-plate capacitor with dielectric insertion](/ap-physics-2-revised/frq-practice?id=698a9e89e97825fc4c8a3bba&type=frq-4-qualitative-quantitative-translation)
- [Electric field and potential difference in parallel-plate capacitor](/ap-physics-2-revised/frq-practice?id=698a9f1ce97825fc4c8a3bbc&type=frq-4-qualitative-quantitative-translation)
- [Dielectric insertion in constant voltage capacitor](/ap-physics-2-revised/frq-practice?id=698a9f90e97825fc4c8a3bc1&type=frq-4-qualitative-quantitative-translation)
- [Parallel-plate capacitor electric force with dielectric insertion](/ap-physics-2-revised/frq-practice?id=698aa006e97825fc4c8a3bc4&type=frq-4-qualitative-quantitative-translation)
- [Parallel-plate capacitor with dielectric partial insertion](/ap-physics-2-revised/frq-practice?id=698aa0d8e97825fc4c8a3bca&type=frq-4-qualitative-quantitative-translation)
- [Gravity and electric forces on charged sphere in dielectric capacitor](/ap-physics-2-revised/frq-practice?id=698aa18ae97825fc4c8a3bcf&type=frq-4-qualitative-quantitative-translation)
- [Parallel-plate capacitor with dielectric insertion and charged particles](/ap-physics-2-revised/frq-practice?id=698aa22ce97825fc4c8a3bd6&type=frq-4-qualitative-quantitative-translation)
- [Electric field in parallel plate capacitors with dielectric](/ap-physics-2-revised/frq-practice?id=698aa2cce97825fc4c8a3bda&type=frq-4-qualitative-quantitative-translation)
- [Parallel-plate capacitor with dielectric insertion](/ap-physics-2-revised/frq-practice?id=698aa36de97825fc4c8a3bdd&type=frq-4-qualitative-quantitative-translation)
- [Parallel-plate capacitor with dielectric insertion](/ap-physics-2-revised/frq-practice?id=698aa3ebe97825fc4c8a3be2&type=frq-4-qualitative-quantitative-translation)
- [Charged particle motion in dielectric-filled parallel plate capacitor](/ap-physics-2-revised/frq-practice?id=698aa46ae97825fc4c8a3be4&type=frq-4-qualitative-quantitative-translation)
- [Parallel-plate capacitor with dielectric insertion](/ap-physics-2-revised/frq-practice?id=698aa522e97825fc4c8a3bea&type=frq-4-qualitative-quantitative-translation)
- [Parallel plate capacitor with dielectric insertion](/ap-physics-2-revised/frq-practice?id=698aa599e97825fc4c8a3bec&type=frq-4-qualitative-quantitative-translation)
- [Charged particle motion in parallel-plate capacitor field](/ap-physics-2-revised/frq-practice?id=698aa64ae97825fc4c8a3bf3&type=frq-4-qualitative-quantitative-translation)
- [Electric field and potential in parallel-plate capacitor with dielectric](/ap-physics-2-revised/frq-practice?id=698aa6d2e97825fc4c8a3bf8&type=frq-4-qualitative-quantitative-translation)
- [Parallel-plate capacitor with dielectric insertion](/ap-physics-2-revised/frq-practice?id=698aa742e97825fc4c8a3bfc&type=frq-4-qualitative-quantitative-translation)
- [Dielectric insertion in constant-voltage parallel plate capacitor](/ap-physics-2-revised/frq-practice?id=698aa7ace97825fc4c8a3c01&type=frq-4-qualitative-quantitative-translation)

### Unit 11: Electric Circuits (17)
- [RC circuit with parallel capacitors charging](/ap-physics-2-revised/frq-practice?id=698aa99be97825fc4c8a3c10&type=frq-4-qualitative-quantitative-translation)
- [Battery circuits with capacitor charging behavior](/ap-physics-2-revised/frq-practice?id=698aaa43e97825fc4c8a3c16&type=frq-4-qualitative-quantitative-translation)
- [Capacitor charging in series-parallel resistor circuits](/ap-physics-2-revised/frq-practice?id=698aaaeee97825fc4c8a3c1c&type=frq-4-qualitative-quantitative-translation)
- [RC circuit behavior with capacitor charge distribution](/ap-physics-2-revised/frq-practice?id=698aab77e97825fc4c8a3c1f&type=frq-4-qualitative-quantitative-translation)
- [RC circuits with capacitor charging behavior](/ap-physics-2-revised/frq-practice?id=698aabebe97825fc4c8a3c25&type=frq-4-qualitative-quantitative-translation)
- [Series-parallel RC circuit with capacitor branching](/ap-physics-2-revised/frq-practice?id=698aac8be97825fc4c8a3c2b&type=frq-4-qualitative-quantitative-translation)
- [Circuit behavior with resistors and capacitors at steady state](/ap-physics-2-revised/frq-practice?id=698aacfae97825fc4c8a3c2e&type=frq-4-qualitative-quantitative-translation)
- [Capacitor charging in parallel RC circuits](/ap-physics-2-revised/frq-practice?id=698aad72e97825fc4c8a3c31&type=frq-4-qualitative-quantitative-translation)
- [Capacitor charging in multi-branch RC circuit](/ap-physics-2-revised/frq-practice?id=698aae43e97825fc4c8a3c37&type=frq-4-qualitative-quantitative-translation)
- [Circuit with capacitors, resistors, and battery at switch closure](/ap-physics-2-revised/frq-practice?id=698aaecae97825fc4c8a3c3c&type=frq-4-qualitative-quantitative-translation)
- [Battery, capacitors, and resistive charging](/ap-physics-2-revised/frq-practice?id=698aaf4be97825fc4c8a3c3e&type=frq-4-qualitative-quantitative-translation)
- [Capacitor charging behavior in multi-branch circuits](/ap-physics-2-revised/frq-practice?id=698aafcce97825fc4c8a3c43&type=frq-4-qualitative-quantitative-translation)
- [Capacitor charging in parallel branches with series resistor](/ap-physics-2-revised/frq-practice?id=698ab0bfe97825fc4c8a3c4d&type=frq-4-qualitative-quantitative-translation)
- [Capacitor behavior in RC circuits at switch closure](/ap-physics-2-revised/frq-practice?id=698ab14ee97825fc4c8a3c50&type=frq-4-qualitative-quantitative-translation)
- [Battery-resistor-capacitor circuit transient response](/ap-physics-2-revised/frq-practice?id=698ab1c6e97825fc4c8a3c55&type=frq-4-qualitative-quantitative-translation)
- [RC circuit behavior with capacitors in series](/ap-physics-2-revised/frq-practice?id=698ab246e97825fc4c8a3c5c&type=frq-4-qualitative-quantitative-translation)
- [Capacitor charging in multi-branch RC circuits](/ap-physics-2-revised/frq-practice?id=698ab2c6e97825fc4c8a3c5e&type=frq-4-qualitative-quantitative-translation)

### Unit 12: Magnetism and Electromagnetism (14)
- [Magnetic field enhancement by core material permeability](/ap-physics-2-revised/frq-practice?id=698aac75e97825fc4c8a3c29&type=frq-4-qualitative-quantitative-translation)
- [Magnetic field enhancement in solenoids with different cores](/ap-physics-2-revised/frq-practice?id=698aad3be97825fc4c8a3c30&type=frq-4-qualitative-quantitative-translation)
- [Magnetic induction in solenoids with variable cores](/ap-physics-2-revised/frq-practice?id=698aae46e97825fc4c8a3c38&type=frq-4-qualitative-quantitative-translation)
- [Magnetic field enhancement through ferromagnetic core materials](/ap-physics-2-revised/frq-practice?id=698aaf85e97825fc4c8a3c40&type=frq-4-qualitative-quantitative-translation)
- [Magnetic field and induced currents in current-carrying wire systems](/ap-physics-2-revised/frq-practice?id=698ab036e97825fc4c8a3c46&type=frq-4-qualitative-quantitative-translation)
- [Magnetic force on charged particles and current-carrying conductors](/ap-physics-2-revised/frq-practice?id=698ab0a1e97825fc4c8a3c4a&type=frq-4-qualitative-quantitative-translation)
- [Magnetic field enhancement in solenoids with iron cores](/ap-physics-2-revised/frq-practice?id=698ab119e97825fc4c8a3c4e&type=frq-4-qualitative-quantitative-translation)
- [Magnetic force on current-carrying wire in solenoid](/ap-physics-2-revised/frq-practice?id=698ab1a2e97825fc4c8a3c53&type=frq-4-qualitative-quantitative-translation)
- [Magnetic force on current-carrying wire in material](/ap-physics-2-revised/frq-practice?id=698ab2dde97825fc4c8a3c60&type=frq-4-qualitative-quantitative-translation)
- [Magnetic field induction in ferromagnetic solenoid cores](/ap-physics-2-revised/frq-practice?id=698ab3d4e97825fc4c8a3c67&type=frq-4-qualitative-quantitative-translation)
- [Electromagnetic induction in solenoid coils](/ap-physics-2-revised/frq-practice?id=698ab51ee97825fc4c8a3c73&type=frq-4-qualitative-quantitative-translation)
- [Magnetic force on charged particle in solenoid](/ap-physics-2-revised/frq-practice?id=698ab617e97825fc4c8a3c80&type=frq-4-qualitative-quantitative-translation)
- [Magnetic field enhancement in ferromagnetic solenoid cores](/ap-physics-2-revised/frq-practice?id=698ab6aae97825fc4c8a3c87&type=frq-4-qualitative-quantitative-translation)
- [Magnetic field strength in paramagnetic material regions](/ap-physics-2-revised/frq-practice?id=698ab766e97825fc4c8a3c8d&type=frq-4-qualitative-quantitative-translation)

### Unit 13: Geometric Optics (15)
- [Converging lens refraction, plane mirror reflection, ray optics](/ap-physics-2-revised/frq-practice?id=6977f99c3d1143c71a872f83&type=frq-4-qualitative-quantitative-translation)
- [Light refraction and reflection through lens-mirror system](/ap-physics-2-revised/frq-practice?id=698ab13de97825fc4c8a3c4f&type=frq-4-qualitative-quantitative-translation)
- [Light refraction, reflection, and lens imaging](/ap-physics-2-revised/frq-practice?id=698ab1bfe97825fc4c8a3c54&type=frq-4-qualitative-quantitative-translation)
- [Image formation by concave mirror and converging lens](/ap-physics-2-revised/frq-practice?id=698ab2ece97825fc4c8a3c61&type=frq-4-qualitative-quantitative-translation)
- [Concave mirror and converging lens image formation](/ap-physics-2-revised/frq-practice?id=698ab48ce97825fc4c8a3c6e&type=frq-4-qualitative-quantitative-translation)
- [Light refraction through parallel surfaces](/ap-physics-2-revised/frq-practice?id=698ab5b4e97825fc4c8a3c7c&type=frq-4-qualitative-quantitative-translation)
- [Converging lens and plane mirror image formation](/ap-physics-2-revised/frq-practice?id=698ab735e97825fc4c8a3c8a&type=frq-4-qualitative-quantitative-translation)
- [Light reflection and refraction at interfaces](/ap-physics-2-revised/frq-practice?id=698ab8e7e97825fc4c8a3c9f&type=frq-4-qualitative-quantitative-translation)
- [Plane mirror reflection, lens refraction, image formation](/ap-physics-2-revised/frq-practice?id=698aba52e97825fc4c8a3cad&type=frq-4-qualitative-quantitative-translation)
- [Light reflection, refraction, and image formation](/ap-physics-2-revised/frq-practice?id=698abb0ee97825fc4c8a3cb5&type=frq-4-qualitative-quantitative-translation)
- [Image formation by mirrors and lenses](/ap-physics-2-revised/frq-practice?id=698abed9e97825fc4c8a3cdf&type=frq-4-qualitative-quantitative-translation)
- [Concave mirror image formation and ray optics](/ap-physics-2-revised/frq-practice?id=698abf9fe97825fc4c8a3ce7&type=frq-4-qualitative-quantitative-translation)
- [Light refraction at air-liquid boundary](/ap-physics-2-revised/frq-practice?id=698ac0ede97825fc4c8a3cf0&type=frq-4-qualitative-quantitative-translation)
- [Light refraction through converging lens and reflection](/ap-physics-2-revised/frq-practice?id=698ac195e97825fc4c8a3cf6&type=frq-4-qualitative-quantitative-translation)
- [Spherical mirror and converging lens image formation](/ap-physics-2-revised/frq-practice?id=698ac22ae97825fc4c8a3cfa&type=frq-4-qualitative-quantitative-translation)

### Unit 14: Waves, Sound, and Physical Optics (17)
- [Double-slit interference fringe spacing by wavelength](/ap-physics-2-revised/frq-practice?id=6977f23c1fb1cc32fbb2505d&type=frq-4-qualitative-quantitative-translation)
- [Single-slit diffraction pattern and wavelength dependence](/ap-physics-2-revised/frq-practice?id=698ab1e4e97825fc4c8a3c57&type=frq-4-qualitative-quantitative-translation)
- [Single-slit diffraction pattern wavelength dependence](/ap-physics-2-revised/frq-practice?id=698ab413e97825fc4c8a3c69&type=frq-4-qualitative-quantitative-translation)
- [Standing waves on a string with tension](/ap-physics-2-revised/frq-practice?id=698ab485e97825fc4c8a3c6d&type=frq-4-qualitative-quantitative-translation)
- [Single-slit diffraction pattern wavelength dependence](/ap-physics-2-revised/frq-practice?id=698ab5b4e97825fc4c8a3c7b&type=frq-4-qualitative-quantitative-translation)
- [Thin film interference patterns in soap films](/ap-physics-2-revised/frq-practice?id=698ab756e97825fc4c8a3c8c&type=frq-4-qualitative-quantitative-translation)
- [Single-slit diffraction pattern wavelength dependence](/ap-physics-2-revised/frq-practice?id=698ab7c8e97825fc4c8a3c91&type=frq-4-qualitative-quantitative-translation)
- [Single-slit diffraction pattern width dependence](/ap-physics-2-revised/frq-practice?id=698ab83de97825fc4c8a3c96&type=frq-4-qualitative-quantitative-translation)
- [Thin film interference with monochromatic light reflection](/ap-physics-2-revised/frq-practice?id=698ab8bce97825fc4c8a3c9c&type=frq-4-qualitative-quantitative-translation)
- [Single-slit diffraction pattern width and wavelength dependence](/ap-physics-2-revised/frq-practice?id=698ab92ee97825fc4c8a3ca3&type=frq-4-qualitative-quantitative-translation)
- [Standing waves on driven string with varying frequency](/ap-physics-2-revised/frq-practice?id=698aba51e97825fc4c8a3cac&type=frq-4-qualitative-quantitative-translation)
- [Thin film interference and reflected light intensity maxima](/ap-physics-2-revised/frq-practice?id=698abafae97825fc4c8a3cb2&type=frq-4-qualitative-quantitative-translation)
- [Single slit diffraction pattern wavelength dependence](/ap-physics-2-revised/frq-practice?id=698abb6fe97825fc4c8a3cbb&type=frq-4-qualitative-quantitative-translation)
- [Single-slit diffraction pattern and wavelength dependence](/ap-physics-2-revised/frq-practice?id=698abbdde97825fc4c8a3cbf&type=frq-4-qualitative-quantitative-translation)
- [Single-slit diffraction pattern width](/ap-physics-2-revised/frq-practice?id=698abc4ae97825fc4c8a3cc5&type=frq-4-qualitative-quantitative-translation)
- [Single-slit diffraction pattern spacing](/ap-physics-2-revised/frq-practice?id=698abd2be97825fc4c8a3ccd&type=frq-4-qualitative-quantitative-translation)
- [Thin film interference and light wavelength reflection](/ap-physics-2-revised/frq-practice?id=698abdd7e97825fc4c8a3cd4&type=frq-4-qualitative-quantitative-translation)

### Unit 15: Modern Physics (14)
- [Photoelectric effect and Compton scattering phenomena](/ap-physics-2-revised/frq-practice?id=6977f2611fb1cc32fbb25060&type=frq-4-qualitative-quantitative-translation)
- [Photoelectric effect and thermal radiation temperature dependence](/ap-physics-2-revised/frq-practice?id=698ab3fde97825fc4c8a3c68&type=frq-4-qualitative-quantitative-translation)
- [Photoelectric effect and stopping potential](/ap-physics-2-revised/frq-practice?id=698ab4a4e97825fc4c8a3c6f&type=frq-4-qualitative-quantitative-translation)
- [Photoelectric effect and stopping potential](/ap-physics-2-revised/frq-practice?id=698ab5a0e97825fc4c8a3c79&type=frq-4-qualitative-quantitative-translation)
- [Photoelectric effect and blackbody radiation spectrum](/ap-physics-2-revised/frq-practice?id=698ab625e97825fc4c8a3c81&type=frq-4-qualitative-quantitative-translation)
- [Photoelectric effect and stopping potential with wavelength](/ap-physics-2-revised/frq-practice?id=698ab6a0e97825fc4c8a3c86&type=frq-4-qualitative-quantitative-translation)
- [Photoelectric effect and work function threshold](/ap-physics-2-revised/frq-practice?id=698ab736e97825fc4c8a3c8b&type=frq-4-qualitative-quantitative-translation)
- [Photoelectric effect and photon energy transfer](/ap-physics-2-revised/frq-practice?id=698ab8f3e97825fc4c8a3ca1&type=frq-4-qualitative-quantitative-translation)
- [Photoelectric effect and stopping potential](/ap-physics-2-revised/frq-practice?id=698ab99ae97825fc4c8a3ca6&type=frq-4-qualitative-quantitative-translation)
- [Photoelectric effect: frequency dependence on stopping potential](/ap-physics-2-revised/frq-practice?id=698aba90e97825fc4c8a3cb0&type=frq-4-qualitative-quantitative-translation)
- [Photoelectric effect and maximum electron kinetic energy](/ap-physics-2-revised/frq-practice?id=698abb22e97825fc4c8a3cb6&type=frq-4-qualitative-quantitative-translation)
- [Photoelectric effect: intensity, frequency, stopping potential](/ap-physics-2-revised/frq-practice?id=698abbdce97825fc4c8a3cbe&type=frq-4-qualitative-quantitative-translation)
- [Photoelectric effect and stopping potential](/ap-physics-2-revised/frq-practice?id=698abc46e97825fc4c8a3cc4&type=frq-4-qualitative-quantitative-translation)
- [Photoelectric effect with blackbody radiation temperature variation](/ap-physics-2-revised/frq-practice?id=698abcc9e97825fc4c8a3cc9&type=frq-4-qualitative-quantitative-translation)

## Sample question

**Gas pressure and temperature in rigid containers**

A rigid, sealed cylindrical container holds 0.030 mol of an ideal monatomic gas. The gas is initially in thermal equilibrium at temperature Ti = 300 K and pressure Pi = 1.20×10⁵ Pa. The container is surrounded by insulation except for a flat wall made of aluminum that has thickness L = 2.0×10^-3 m and area A = 1.5×10^-2 m². The thermal conductivity of the aluminum is k = 205 W/(m·K). The outer surface of the aluminum wall is suddenly brought into good thermal contact with a large thermal reservoir at temperature TR = 450 K, as shown in Figure 1. The container is rigid, so the gas volume remains constant throughout the process, and the reservoir temperature remains constant.

Figure 1:
  Type: setup_diagram
  Caption: Figure 1. Sealed cylinder with heated monatomic gas
  URL: https://kcbwzropdukwhmmvdylp.supabase.co/storage/v1/object/public/frq_stimulus/ap-physics-2-revised/b95af32d-ea3d-4528-9394-8ee0ae1493f4_fig1.jpg
  Placement: before-part
  Part Letter: A

Part A (3 points):
  Prompt: A student claims: “As energy is transferred from the reservoir to the gas, the gas pressure increases because the gas atoms move faster and collide with the container walls more often and with greater impulse.”

**Indicate** whether the student’s claim is correct or incorrect. Without manipulating equations, justify your answer by describing (i) how the temperature of the gas is related to the motion of its atoms and (ii) how the pressure exerted by the gas is related to collisions of atoms with the container walls. Refer to the rigid container shown in Figure 1 in your reasoning.
  Verb: indicate and justify

Part B (4 points):
  Prompt: **Derive** an expression for the time t needed for the gas temperature to increase from Ti = 300 K to Tf = 360 K due to conduction through the aluminum wall in Figure 1. Assume the inner surface of the aluminum wall is always at the instantaneous gas temperature T (so the temperature difference across the wall is TR − T), and assume the gas is spatially uniform in temperature at all times. Express your answer in terms of n, k, A, L, TR, Ti, Tf, and physical constants as appropriate. Begin your derivation by writing a fundamental physics principle or an equation from the reference information.
  Verb: derive

Part C (1 point):
  Prompt: **Indicate** whether your expression from part B is or is not consistent with the following claim: “If the aluminum wall thickness L is doubled while all other given quantities remain the same, the required time t for the gas to warm from Ti to Tf doubles.” Briefly justify your answer by referencing the functional dependence of your expression on L.
  Verb: indicate and briefly justify

Image URLs (1):
  - https://kcbwzropdukwhmmvdylp.supabase.co/storage/v1/object/public/frq_stimulus/ap-physics-2-revised/b95af32d-ea3d-4528-9394-8ee0ae1493f4_fig1.jpg

## Questions

**How many responses can I get scored?**

You can read every question without a plan. Your first scored response is included. A plan unlocks unlimited scoring.

**Can I use equations in part A?**

No. Part A asks you to justify the claim without manipulating equations, by describing what happens physically. Part B is where you derive.

**How is the QQT different from the Mathematical Routines question?**

The QQT starts with reasoning in words, then checks it against a derivation, and is worth 8 points. The Mathematical Routines question adds a diagram and is worth 10.

**How do I type equations and symbols?**

Use the subscript, superscript, and special-character buttons in the editor toolbar. Or write your derivation on paper, switch to handwrite, and add a photo.

**Are these real College Board questions?**

No. We wrote them in the AP format, with the same three parts, and wrote scoring guidelines for each one.

## Related

- [Qualitative/Quantitative FRQ exam guide](/ap-physics-2-revised/ap-physics-2-exam/ap-physics-2-ap-phys-2-frq-qualitative-quantitative-translation/study-guide/ap-physics-2-ap-phys-2-frq-qualitative-quantitative-translation)
- [AP Physics 2 Mathematical Routines FRQ practice](/ap-physics-2-revised/frqs/mathematical-routines)
- [AP Physics 2 Representations FRQ practice](/ap-physics-2-revised/frqs/translation-between-representations)
- [AP Physics 2 Experimental Design FRQ practice](/ap-physics-2-revised/frqs/experimental-design)
- [AP Physics 2 FRQs](/ap-physics-2-revised/frqs)
- Any question by id: the `get_frq` tool on the [Fiveable MCP server](/mcp/docs)

## About This Document

Canonical Fiveable pages are available as Markdown at the same path plus `.md`.

- [llms.txt](https://fiveable.me/llms.txt): index of Fiveable's sections and URL patterns
- [llms-full.txt](https://fiveable.me/llms-full.txt): complete subject and unit listing
- [MCP server](https://fiveable.me/mcp): call Fiveable as tools instead of fetching pages (`https://fiveable.me/api/mcp`)
- [MCP server for AP teachers](https://fiveable.me/mcp/teachers): a teacher's classes, assignments and AP-rubric grading (`https://fiveable.me/api/mcp/teacher`)