Georgia Unified Physics case studies
Georgia Unified Physics · Put your knowledge to work in context.
The Georgia Unified Physics exam is a standardized subject assessment for candidates who need to demonstrate a broad, working command of introductory physics. It is typically taken by high school students seeking credit or placement, by undergraduates satisfying a general-education science requirement, and by prospective teachers or paraprofessionals who must show content knowledge before entering a classroom. The Georgia Unified Physics case studies are 5 cases and about 1,952 words.
1Momentum on a Misleveled Air Track
During a collision lab, a student uses a 1.20 m air track that is not level: one end is 3.0 cm higher than the other, although the bubble level was misread as centered. Glider A (0.482 kg) is launched uphill toward stationary glider B (0.716 kg).
403 words, about 2 min2Calorimetry with a Wet Metal Sample
In a calorimetry lab, a student heats a 0.152 kg metal sample in boiling water at 99.2°C and then quickly transfers it to a coffee-cup calorimeter. The cup has an aluminum inner liner of mass 0.045 kg and contains 0.120 kg of water at 21.5°C.
371 words, about 2 min3Resonance Tube and the End Correction
A student uses a vertical resonance tube with a water reservoir to measure the speed of sound. A 512 Hz tuning fork is held above the open end, and the water level is lowered until resonance is heard.
400 words, about 2 min4Battery Internal Resistance Under Parallel Load
A student is testing a battery pack labeled 9.0 V. A high-impedance voltmeter reads 9.00 V with no load.
386 words, about 2 min5Photoelectric Effect with an Unshielded LED
In a photoelectric-effect experiment, a student illuminates a photocathode with four LEDs and measures the stopping potential with a variable DC supply and a sensitive galvanometer. The LED wavelengths and measured stopping potentials are: 470 nm, 0.64 V; 505 nm, 0.60 V; 590 nm, 0.10 V; 630 nm, no reproducible stopping potential.
392 words, about 2 min