Целевая практика перед full tests, чтобы coverage было понятным.
0.7 kg of water warms by 25 °C; c=4200 J/(kg·°C). Find Q.
Structure a solution for “Gas pressure”: givens, SI units, law, substitution, and interpretation.
Identify three uncertainty sources in measuring “Changes of state” and improve each one.
Plan a suitable graph for “Internal energy in simple terms” data and explain how to obtain a gradient or relationship.
Check whether a result for “Solar system” is sensible using units, order of magnitude, and a limiting case.
Connect “Gravity” to energy conservation or a force/field model and justify the choice.
Write a multi-step exam response about “Orbits” with calculation and evaluation.
Compare two methods for investigating “Stars introduction” and select the more reliable using criteria.