Table of contents
- 0. Math Review(45)
- 1. Intro to Physics Units(231)
- 2. 1D Motion / Kinematics(324)
- Vectors, Scalars, & Displacement(29)
- Average Velocity(20)
- Intro to Acceleration(19)
- Position-Time Graphs & Velocity(20)
- Conceptual Problems with Position-Time Graphs(20)
- Velocity-Time Graphs & Acceleration(20)
- Calculating Displacement from Velocity-Time Graphs(20)
- Conceptual Problems with Velocity-Time Graphs(22)
- Calculating Change in Velocity from Acceleration-Time Graphs(20)
- Graphing Position, Velocity, and Acceleration Graphs(20)
- Kinematics Equations(33)
- Vertical Motion and Free Fall(61)
- Catch/Overtake Problems(20)
- 3. Vectors(229)
- Review of Vectors vs. Scalars(19)
- Introduction to Vectors(19)
- Adding Vectors Graphically(20)
- Vector Composition & Decomposition(24)
- Adding Vectors by Components(33)
- Trig Review(15)
- Unit Vectors(20)
- Introduction to Dot Product (Scalar Product)(20)
- Calculating Dot Product Using Components(20)
- Intro to Cross Product (Vector Product)(20)
- Calculating Cross Product Using Components(19)
- 4. 2D Kinematics(106)
- 5. Projectile Motion(155)
- 6. Intro to Forces (Dynamics)(239)
- 7. Friction, Inclines, Systems(168)
- 8. Centripetal Forces & Gravitation(503)
- Uniform Circular Motion(30)
- Period and Frequency in Uniform Circular Motion(20)
- Centripetal Forces(26)
- Vertical Centripetal Forces(20)
- Flat Curves(20)
- Banked Curves(20)
- Newton's Law of Gravity(24)
- Gravitational Forces in 2D(21)
- Acceleration Due to Gravity(20)
- Satellite Motion: Intro(20)
- Satellite Motion: Speed & Period(21)
- Geosynchronous Orbits(20)
- Overview of Kepler's Laws(20)
- Kepler's First Law(21)
- Kepler's Third Law(20)
- Kepler's Third Law for Elliptical Orbits(20)
- Gravitational Potential Energy(20)
- Gravitational Potential Energy for Systems of Masses(20)
- Escape Velocity(20)
- Energy of Circular Orbits(20)
- Energy of Elliptical Orbits(20)
- Black Holes(20)
- Gravitational Force Inside the Earth(20)
- Mass Distribution with Calculus(20)
- 9. Work & Energy(185)
- 10. Conservation of Energy(225)
- Intro to Energy Types(20)
- Gravitational Potential Energy(20)
- Intro to Conservation of Energy(25)
- Energy with Non-Conservative Forces(18)
- Springs & Elastic Potential Energy(24)
- Solving Projectile Motion Using Energy(20)
- Motion Along Curved Paths(20)
- Rollercoaster Problems(19)
- Pendulum Problems(18)
- Energy in Connected Objects (Systems)(17)
- Force & Potential Energy(24)
- 11. Momentum & Impulse(284)
- Intro to Momentum(20)
- Intro to Impulse(20)
- Impulse with Variable Forces(20)
- Intro to Conservation of Momentum(20)
- Push-Away Problems(20)
- Types of Collisions(20)
- Completely Inelastic Collisions(32)
- Adding Mass to a Moving System(19)
- Collisions & Motion (Momentum & Energy)(19)
- Ballistic Pendulum(19)
- Collisions with Springs(15)
- Elastic Collisions(20)
- How to Identify the Type of Collision(20)
- Intro to Center of Mass(20)
- 12. Rotational Kinematics(170)
- 13. Rotational Inertia & Energy(278)
- More Conservation of Energy Problems(20)
- Conservation of Energy in Rolling Motion(20)
- Parallel Axis Theorem(20)
- Intro to Moment of Inertia(20)
- Moment of Inertia via Integration(20)
- Moment of Inertia of Systems(20)
- Moment of Inertia & Mass Distribution(20)
- Intro to Rotational Kinetic Energy(21)
- Energy of Rolling Motion(20)
- Types of Motion & Energy(20)
- Conservation of Energy with Rotation(20)
- Torque with Kinematic Equations(20)
- Rotational Dynamics with Two Motions(20)
- Rotational Dynamics of Rolling Motion(17)
- 14. Torque & Rotational Dynamics(126)
- 15. Rotational Equilibrium(156)
- 16. Angular Momentum(188)
- Opening/Closing Arms on Rotating Stool(20)
- Conservation of Angular Momentum(33)
- Angular Momentum & Newton's Second Law(20)
- Intro to Angular Collisions(20)
- Jumping Into/Out of Moving Disc(21)
- Spinning on String of Variable Length(14)
- Angular Collisions with Linear Motion(0)
- Intro to Angular Momentum(21)
- Angular Momentum of a Point Mass(19)
- Angular Momentum of Objects in Linear Motion(20)
- 17. Periodic Motion(184)
- 18. Waves & Sound(400)
- Intro to Waves(22)
- Velocity of Transverse Waves(20)
- Velocity of Longitudinal Waves(20)
- Wave Functions(23)
- Phase Constant(22)
- Average Power of Waves on Strings(21)
- Wave Intensity(19)
- Sound Intensity(26)
- Wave Interference(50)
- Superposition of Wave Functions(20)
- Standing Waves(51)
- Standing Wave Functions(20)
- Standing Sound Waves(31)
- Beats(21)
- The Doppler Effect(34)
- 19. Fluid Mechanics(256)
- 20. Heat and Temperature(252)
- Temperature(21)
- Linear Thermal Expansion(25)
- Volume Thermal Expansion(21)
- Moles and Avogadro's Number(20)
- Specific Heat & Temperature Changes(30)
- Latent Heat & Phase Changes(19)
- Intro to Calorimetry(20)
- Calorimetry with Temperature and Phase Changes(19)
- Advanced Calorimetry: Equilibrium Temperature with Phase Changes(20)
- Phase Diagrams, Triple Points and Critical Points(19)
- Heat Transfer(38)
- 21. Kinetic Theory of Ideal Gases(218)
- 22. The First Law of Thermodynamics(136)
- 23. The Second Law of Thermodynamics(172)
- 24. Electric Force & Field; Gauss' Law(325)
- 25. Electric Potential(222)
- 26. Capacitors & Dielectrics(195)
- 27. Resistors & DC Circuits(281)
- 28. Magnetic Fields and Forces(143)
- 29. Sources of Magnetic Field(161)
- Magnetic Field Produced by Moving Charges(20)
- Magnetic Field Produced by Straight Currents(22)
- Magnetic Force Between Parallel Currents(20)
- Magnetic Force Between Two Moving Charges(13)
- Magnetic Field Produced by Loops andSolenoids(26)
- Toroidal Solenoids aka Toroids(20)
- Biot-Savart Law (Calculus)(20)
- Ampere's Law (Calculus)(20)
- 30. Induction and Inductance(274)
- 31. Alternating Current(279)
- Alternating Voltages and Currents(20)
- RMS Current and Voltage(20)
- Phasors(20)
- Resistors in AC Circuits(21)
- Phasors for Resistors(19)
- Capacitors in AC Circuits(34)
- Phasors for Capacitors(20)
- Inductors in AC Circuits(22)
- Phasors for Inductors(20)
- Impedance in AC Circuits(20)
- Series LRC Circuits(24)
- Resonance in Series LRC Circuits(19)
- Power in AC Circuits(20)
- 32. Electromagnetic Waves(176)
- 33. Geometric Optics(421)
- 34. Wave Optics(168)
- 35. Special Relativity(281)
1. Intro to Physics Units
Operations with Significant Figures
1. Intro to Physics Units
Operations with Significant Figures: Videos & Practice Problems
4 of 20
Problem 4
Perform the following operations and write the answer in correct number of significant figures √25.4
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