Basque PAU Physics case studies
Basque PAU Physics · Put your knowledge to work in context.
The Euskal Autonomia Erkidegoko Unibertsitatean Sartzeko Ebaluazioa (EAU) - Fisika is the university entrance physics examination used in the Basque Country. It is intended for students finishing the Bachillerato who need a physics score for admission to science and engineering degrees, and for candidates improving their university entry marks. The Basque PAU Physics case studies are 5 cases and about 3,351 words.
1Hohmann transfer with a tight propellant budget
A 620 kg satellite is in a circular orbit 350 km above Earth's surface. Mission planners want it in a circular orbit at 1200 km.
675 words, about 3 min2Coaxial cable potential and a misleading multimeter
A coaxial cable 1.20 m long has a solid inner conductor of radius 0.80 mm and a coaxial outer conductor whose inner radius is 4.00 mm. The space between them is evacuated.
627 words, about 3 min3Loop entering a magnetic field: terminal velocity?
A square conducting loop of side 0.20 m, resistance 0.50 Ω, and mass 0.040 kg falls vertically. Its lower edge crosses a horizontal boundary into a region of uniform magnetic field B=0.80 T pointing horizontally into the page; the loop's plane is in the page.
662 words, about 3 min4Resonance tube: end correction or bad resonance?
In a resonance-tube experiment, a 512 Hz tuning fork is held over a tube closed at one end and partly filled with water. The water level is lowered until the sound is loudest.
677 words, about 3 min5Photoelectric effect: zero error and a false threshold
Students illuminate a sodium photocathode with work function about 2.3 eV in a vacuum tube and measure the stopping potential with a high-impedance electrometer. At λ=400 nm they record a stopping potential of 0.85 V; at λ=500 nm they record 0.25 V.
710 words, about 4 min