Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Thermal expansion, sound level, heat conduction, and Doppler effect problems
- ReMa
- · Replies 2 ·
How Cars Accelerate - A Physics Explanation
- DV10
- · Replies 1 ·
Heisenberg uncertainty principle for a moving ball
- asl3589
- · Replies 3 ·
Finding maximum force from a particle's changing velocity
- ChrisMC
- · Replies 3 ·
Calculating uncertainty in a problem?
- bio.student24
- · Replies 2 ·
Asteroid impact speed and change in Earth's day length
- karobins
- · Replies 10 ·
Potential difference and a conductor
- snshusat161
- · Replies 15 ·
Answer Age of Rock: 1.7*10^9 Years
- triac
- · Replies 2 ·
Kinetic Energies of Particles in Nuclear Decay
- lifeiseasy
- · Replies 1 ·
What is the rate of heat loss through an insulated wall with glass wool?
- kboykb
- · Replies 2 ·
Conservation of energy of three spring system.
- bobred
- · Replies 1 ·
How Can I Determine the Weights of Fish A, C, and D in Mobile Equilibrium?
- Isimanica
- · Replies 3 ·
Converting base 10 to Roman Numerals
- C++ hates me
- · Replies 3 ·
Amplitude and intensity of rock concert
- L1988
- · Replies 2 ·
Finding the distance from deceleration
- Marstiphal
- · Replies 3 ·
Why is length not the same as wavelength in this tuning fork problem?
- Brittykitty
- · Replies 8 ·
Rotational Motion of a Mass on a Table: Solutions
- benf.stokes
- · Replies 4 ·
Why do we assume cylindrical symmetry in Ampere's Law?
- maccha
- · Replies 1 ·
Why does voltage lead current by π/2 in a pure inductor or capacitor?
- thereddevils
- · Replies 1 ·
Intensity of unpolarized light through two polarizers
- Linus Pauling
- · Replies 3 ·
Power Dissipation (more than one battery)
- ReMa
- · Replies 2 ·
Rate at which energy is delivered
- dpeagler
- · Replies 1 ·
Direction of acceleration of a yo-yo
- mybrohshi5
- · Replies 6 ·
Van der Waals gas thermometer calibrated at triple point
- completenoob
- · Replies 8 ·
Intensity of light with given power through a polarizer
- Linus Pauling
- · Replies 3 ·
Speed of catching a falling ruler
- bobbajobb
- · Replies 12 ·
Electric field between positive planes
- novedevon
- · Replies 1 ·
Electromagnetics = Biot-Savart Law around square path
- satchmo05
- · Replies 2 ·
Circuit Problem with Wattages instead of Resistances
- aznshark4
- · Replies 6 ·
Destructive Interference when walking toward an antenna
- skibum143
- · Replies 1 ·
Finding planet mass from pendulum period and radius
- chara76
- · Replies 5 ·
Average resistance force to stop an object
- bamfazoid
- · Replies 6 ·
Fraction of Radiation Detected
- darkchild
- · Replies 13 ·
Finding the density of a wood block that floats 3/4 submerged
- Cranford803
- · Replies 1 ·
String harmonics with hanging weight and pulley
- jackleyt
- · Replies 1 ·
Calculating Change in Entropy for Water Vaporization at 100oC
- Cranford803
- · Replies 1 ·
Buoyancy problem answer check. Thanks
- Cranford803
- · Replies 1 ·
Rearranging coulombs law equation
- Eranu
- · Replies 8 ·
What is the velocity and pressure of water in a narrowed pipe?
- Foghorn
- · Replies 1 ·
I can't understand this circuit
- kliker
- · Replies 4 ·
Calculating Am-241 Content from Radioactivity Measurements
- triac
- · Replies 2 ·
Potential Due to a Charged non conducting sphere
- snshusat161
- · Replies 4 ·
Making A the Subject of F in Rearranged Equations
- helpwiysciene
- · Replies 7 ·
Does y(x,t) Satisfy the One-Dimensional Wave Equation?
- TheTourist
- · Replies 1 ·
Spring Mass System: Calculating Frequency, Acceleration, and Velocity
- d.r
- · Replies 4 ·
Which Diameter Should Be Used in Parachute Design Calculations?
- klokes
- · Replies 3 ·
Which Object Has Greater Momentum if Kinetic Energy is Equal?
- Alms
- · Replies 6 ·
How Does Time Dilation Affect Dinner Time on a Starship Traveling at 0.93c?
- iaberrant
- · Replies 6 ·
Tension and centripetal forces
- Misr
- · Replies 18 ·
What is the magnitude of the magnetic field at the center of the arc?
- anna_628
- · Replies 3 ·
Geostationary Satellite: Height, Equator, Uses
- ride4life
- · Replies 2 ·
Acceleration and Force in Towing Scenario
- cheerspens
- · Replies 3 ·
What Are Two Properties of a Single Crystal?
- ZedCar
- · Replies 2 ·
Centripetal acceleration of a satellite orbiting Earth
- ride4life
- · Replies 10 ·
Writing the wave equation for a transverse wave on a string
- jackleyt
- · Replies 8 ·
Determining overtones of sound waves in a pip
- jackleyt
- · Replies 2 ·
Speed of sound in a gas (sig fig problem)
- darryw
- · Replies 10 ·
Ball dropped onto spring: velocity and acceleration at maximum compression
- HeyBurrito
- · Replies 5 ·
Finding Power in watt with a real battery
- dmsgo89
- · Replies 2 ·
Finding the period with mass attached to two springs
- aal0315
- · Replies 2 ·
Wavelength, frequency, and E field amplitude from magnetic field equation
- Linus Pauling
- · Replies 3 ·
Rock's Angular Motion in Bicycle Wheel Braking
- freak_boy186
- · Replies 3 ·
Intensity of light through two polarizers and Malus's Law
- Linus Pauling
- · Replies 2 ·
Solving Mike's Crate Motion After 2 Secs
- cheerspens
- · Replies 3 ·
Find the Height of an Inclined Plane for a Rolling Disk
- juggalomike
- · Replies 3 ·
Show eigenfunctions are orthogonal
- indie452
- · Replies 1 ·
Max Power of 1.3cm Diameter Laser Beam Propagating Air
- Linus Pauling
- · Replies 2 ·
Time and max. height of stone thrown into air.
- shannon.leigh
- · Replies 2 ·
What properties of a material make it a good insulator and opaque?
- chmmr
- · Replies 1 ·
Finding Frictional Coefficient for Constant Speed Crate
- Booska
- · Replies 1 ·
What Was the Original Mass of the Ice Block in the Calorimetry Experiment?
- aal0315
- · Replies 8 ·
Identifying elastic vs inelastic collisions from momentum and kinetic energy data
- Princess19
- · Replies 17 ·
Change in Resistance due to Thermal Expansion
- munchy35
- · Replies 2 ·
Moment of inertia of two objects after collision
- hwhanson
- · Replies 1 ·
How does the change in voltage affect the brightness of a light bulb?
- 05holtel
- · Replies 2 ·
Transposing formulas to make V and Z the subject
- ashisstuck
- · Replies 1 ·
Electron Maximum Speed in Uniformly Charged Sphere
- trignum07
- · Replies 1 ·
Why AC instead of DC for Electric Power Transmission?
- ZedCar
- · Replies 2 ·
Inner/Outer Spherical Shells - Gauss' Law
- singinglupine
- · Replies 4 ·
2 Spaceships travelling towards a blackhole.
- Kingee
- · Replies 1 ·
Understanding Joule's Law and Power: How Does It Relate to Heat and Resistance?
- I&Tstudent
- · Replies 5 ·
Maximum power in series-parallel circuit with resistor limits
- kliker
- · Replies 2 ·
2 objects travelling in separate dimensions
- nSMITH
- · Replies 3 ·
How Does Mass, Radius, and Tension Affect Frequency in Circular Motion?
- imapeiceofwod
- · Replies 2 ·
How Should You Calculate Roller Coaster Acceleration Using Motion Diagrams?
- Glorzifen
- · Replies 1 ·
Block and Spring (Simple Harmonic Motion Problem)
- maladroit
- · Replies 3 ·
Calculating Carrier Concentration in Semiconductors Using the Hall Effect
- Master J
- · Replies 5 ·
Transverse Waves: Why Are They Known as Shear Waves?
- ronit
- · Replies 1 ·
Parallel Plate Capacitor Spacing Question
- jacksonpeeble
- · Replies 10 ·
Calculating Sound Wave Intensity and Decibels 10.0m from Source
- jamessmith
- · Replies 1 ·
Escape Velocity (from surface of the Earth)
- Tyyoung
- · Replies 2 ·
Power transmitted by belt and rope drives with different angles of lap
- Brabs23
- · Replies 1 ·
How Does Nozzle Size Affect Water Speed and Pressure?
- mandi_babe1
- · Replies 2 ·
Is Impedance Directly Proportional to Frequency in an AC Circuit?
- Catkill
- · Replies 7 ·
Simple Pendulum - Maximum Speed
- mparsons06
- · Replies 3 ·
Orbital period and speed of GPS satellites at 2.6×10^7 m altitude
- mandi_babe1
- · Replies 1 ·
Calculating the Fringe Width without the value of its Wavelength
- AJ786
- · Replies 2 ·
Solving the Twin Paradox: Age Difference Between Bill and Ben
- iaberrant
- · Replies 3 ·
Why does a steeper slide increase speed if both paths have the same height?
- imortaltoad
- · Replies 4 ·