Worked solutions to all 2,023 Savchenko physics problems.

1,930 solutions 115 contributors 8,310 edits Who wrote them
1,930 / 2,023 problems solved (95.4%)

93 problems still unsolved. Can you solve one?

Both languages English only Russian only Unsolved
1
Kinematics
112 / 112 solved
§ 1.1 — Constant-speed motion 23 / 23
§ 1.2 — Variable-speed motion 21 / 21
§ 1.3 — Motion in gravity field. Curvilinear motion 30 / 30
§ 1.4 — Galileo's transformations 18 / 18
§ 1.5 — Motion with constraints 20 / 20
2
Dynamics
137 / 392 solved
§ 2.1 — Newton's laws 51 / 67
§ 2.2 — Momentum. Center of mass 14 / 47
§ 2.3 — Kinetic energy. Work. Potential energy 13 / 49
§ 2.4 — Energy of a system. Energy transfer. Power 11 / 45
§ 2.5 — Collisions 9 / 39
§ 2.6 — Gravitational force. Kepler's laws 17 / 53
§ 2.7 — Rotation of a solid body 9 / 48
§ 2.8 — Statics 13 / 44
3
Oscillations and Waves
57 / 247 solved
§ 3.1 — Small deviations from equilibrium 17 / 17
§ 3.2 — Period and frequency of free oscillations 16 / 37
§ 3.3 — Harmonic motion 6 / 36
§ 3.4 — The superposition of oscillations 3 / 19
§ 3.5 — Forced and damped oscillations 14 / 42
§ 3.6 — Strain and stress. Wave's speed 0 / 28
§ 3.7 — Wave propagation 1 / 22
§ 3.8 — Overlapping and reflection of waves 0 / 20
§ 3.9 — Sound. Acoustic resonators 0 / 26
4
Fluid Mechanics
24 / 125 solved
§ 4.1 — Fluid Pressure 7 / 24
§ 4.2 — Swimming. Archimedes' law 12 / 27
§ 4.3 — The motion of an ideal fluid 0 / 21
§ 4.4 — Viscous fluid flow 0 / 9
§ 4.5 — Fluid surface tension 4 / 27
§ 4.6 — Capillary phenomena 1 / 17
5
Molecular Physics
36 / 232 solved
§ 5.1 — Thermal motion of particles 0 / 11
§ 5.2 — Distribution of gas molecules by velocity 1 / 17
§ 5.3 — Collisions of molecules. Transfer processes 5 / 14
§ 5.4 — Rare gases. Interaction of molecules with the surface of a solid body 3 / 20
§ 5.5 — Equation of state of an ideal gas 7 / 36
§ 5.6 — First Law of Thermodynamics. Heat capacity 12 / 31
§ 5.7 — Gas flow 0 / 9
§ 5.8 — Probability of a thermodynamical state 2 / 16
§ 5.9 — Second Law of Thermodynamics 4 / 26
§ 5.10 — Phase transitions 1 / 35
§ 5.11 — Thermal radiation 1 / 17
6
Electrostatics
32 / 154 solved
§ 6.1 — Coulomb's law. Electric field 2 / 21
§ 6.2 — The flux of the electric field. Gauss's theorem 4 / 15
§ 6.3 — The potential of an electric field. Conductors in a constant electric field 6 / 40
§ 6.4 — Capacitors 1 / 18
§ 6.5 — Electrical pressure. The energy of an electric field 11 / 30
§ 6.6 — The electric field in the presence of a dielectric 8 / 30
7
Motion of charged particles in an electric field
23 / 95 solved
§ 7.1 — Movement in a constant electric field 9 / 28
§ 7.2 — Focusing charged particles 1 / 14
§ 7.3 — Motion in an alternating electric field 5 / 15
§ 7.4 — Interaction of charged particles 8 / 38
8
Electric current
8 / 124 solved
§ 8.1 — Current. Current density. Current in vacuum 3 / 21
§ 8.2 — Conductivity. Resistance. Sources of electromotive force 2 / 34
§ 8.3 — Electric circuits 3 / 48
§ 8.4 — Capacitors and non-linear elements in electrical circuits 0 / 21
9
Constant magnetic field
54 / 75 solved
§ 9.1 — Induction of the magnetic field. The effect of a magnetic field on a current 15 / 15
§ 9.2 — The magnetic field of a moving charge. Induction of the magnetic field from a linear current 21 / 23
§ 9.3 — The magnetic field from a current distributed over a surface of space 14 / 24
§ 9.4 — Magnetic flux 4 / 13
10
Motion of charged particles in complex fields
16 / 41 solved
§ 10.1 — Motion in a homogeneous magnetic field 10 / 29
§ 10.2 — Drift motion of particles 6 / 12
11
Electromagnetic induction
51 / 143 solved
§ 11.1 — The motion of conductors in a constant magnetic field. Electric motors 5 / 32
§ 11.2 — Vortex electric field 9 / 21
§ 11.3 — Mutual inductance. Inductance of conductors. Transformers 15 / 25
§ 11.4 — AC electrical circuits 8 / 25
§ 11.5 — Magnetic flux conservation. Superconductors in magnetic field 9 / 28
§ 11.6 — Relation of an alternating electric field to a magnetic field 5 / 12
12
Electromagnetic waves
38 / 49 solved
§ 12.1 — Properties of emission and reflection of electromagnetic waves 25 / 34
§ 12.2 — Propagation of electromagnetic waves 13 / 15
13
Geometrical optics. Photometry. Quantum nature of light
46 / 105 solved
§ 13.1 — Rectilinear propagation and reflection of light 9 / 20
§ 13.2 — Refraction of light. The lens formula 8 / 23
§ 13.3 — Optical systems 14 / 28
§ 13.4 — Photometry 13 / 25
§ 13.5 — The quantum nature of light 2 / 9
14
Special theory of relativity
74 / 129 solved
§ 14.1 — The constancy of the light speed. Velocity addition 10 / 28
§ 14.2 — The slowing down of time and the reduction in the size of bodies in motion; the Lorentz Transformations 8 / 18
§ 14.3 — The transformation of electric and magnetic fields 18 / 28
§ 14.4 — Motion of relativistic particles in electric and magnetic fields 19 / 31
§ 14.5 — Conservation of mass and momentum 19 / 24
Savchenko Solutions team
Savchenko Solutions Core Team Batch of 2025

LEX 18 (NBC), Read the original story

I'm thinking about the future of this platform. Should we expand beyond Savchenko? Create collaborative study guides? Cover new subjects like math or astronomy? If you have a few minutes, I'd appreciate hearing your thoughts—what works, what doesn't, what you'd like to see.

Enter the name of the problem