Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
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Electric field midway between two negative charges
- mistermill
- · Replies 1 ·
Formula for forces on a pendulum at introductory level
- rputra
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Calculating Piston Oscillation Frequencies in a Gas-Filled Tube
- skrat
- · Replies 19 ·
An astronaut has landed on Planet N-40 and conducts an experiment to
- chemistrymole
- · Replies 3 ·
Maximum electromagnetic field from current loops of different radii
- baby_1
- · Replies 13 ·
Velocity of mass falling from height h above a star of radius R
- Karol
- · Replies 4 ·
How Do Speeds Change After an Elastic Collision?
- syavian1019
- · Replies 1 ·
At what angle should a rocket be fired to reach maximum height
- Karol
- · Replies 3 ·
Ball collision momentum problem
- petoknm
- · Replies 14 ·
Minimum force to move M2 connected to M1 by spring
- Satvik Pandey
- · Replies 31 ·
Ratio of inertial and gravitational mass?
- Zia188
- · Replies 3 ·
Acceleration at the time of throwing a ball
- Adjoint
- · Replies 17 ·
Is surface charge density uniform on all parts of a conductor?
- baby_1
- · Replies 7 ·
Circuit with capacitors and switch
- Chetlin
- · Replies 5 ·
Coulomb's law three points on a line
- Roodles01
- · Replies 1 ·
Archimede's Principle Question?
- haflanagan
- · Replies 1 ·
How Do You Solve Particle Motion Problems in Physics Exams?
- Woolyabyss
- · Replies 2 ·
Network Analysis/Loop Rule Problem
- hagobarcos
- · Replies 13 ·
Torque Equation and Slope Intercept
- Nicolas5150
- · Replies 1 ·
Special Relativity: Relative velocity
- PeterPeter
- · Replies 3 ·
Special relativity: fireworks exploding
- alingy1
- · Replies 2 ·
Velocity and acceleration of an army tank
- ad848
- · Replies 1 ·
Centripetal Force, Gravity and Normal
- Biloon
- · Replies 3 ·
Why does the first law use ΔU = Q + W instead of ΔQ = ΔU + W?
- rputra
- · Replies 4 ·
Vibrational Excitation and Heat Capacity
- Mangoes
- · Replies 10 ·
Problem with electric flux density
- bibo_dvd
- · Replies 2 ·
How Do You Calculate Work Done on a Particle Given Its Position-Time Equation?
- phyphyphy
- · Replies 1 ·
Two balls meeting: which has greater speed and at what height?
- Adjoint
- · Replies 19 ·
At what time do the two balls hit each other?
- sankalpmittal
- · Replies 28 ·
What Does a Unit Vector Field Look Like in Cartesian Coordinates?
- bibo_dvd
- · Replies 2 ·
When Does Radial Acceleration Equal Tangential Acceleration in Circular Motion?
- matineesuxxx
- · Replies 22 ·
How Do You Calculate Photon Detection Probabilities for Different Stars?
- Lynx1390
- · Replies 5 ·
Chain problem to do with Newton's 2nd law.
- AJ2357
- · Replies 11 ·
Finding Thevenin equivalent voltage and resistance in a circuit
- mectarek
- · Replies 4 ·
Static friction on stacked boxes with mass ratio
- StevenStone
- · Replies 25 ·
Percent correction for Magnetic Field vs. Electric Field
- michaelle1991
- · Replies 4 ·
Find total displacement of an automobile
- GoGoGadget
- · Replies 13 ·
Wrong Answer in Textbook for Collision Velocity Calculation
- mafagafo
- · Replies 3 ·
Finding change in speed from x vs t graph
- Adjoint
- · Replies 29 ·
Finding time it takes for electron to travel a certain distance
- GoGoGadget
- · Replies 2 ·
Finding acceleration of two sprinters from race data
- HMPARTICLE
- · Replies 6 ·
How Small Must a Bone Be to Detect a 5% Change in X-ray Imaging Intensity?
- jdemps
- · Replies 3 ·
Equilibrium Question - at what rate does the block accelerate?
- tobya93
- · Replies 2 ·
Imagine that a bullet is shot vertically into the air with an initial
- Art_Vandelay
- · Replies 16 ·
Equilibrium temperature for ice, water vapor, and copper container
- powerof
- · Replies 6 ·
Speed of conical pendulum at angle alpha to horizontal
- matineesuxxx
- · Replies 2 ·
Relativistic kinematics: when will a photon and spaceship meet?
- CybrSpace
- · Replies 2 ·
Current in secondary of transformer
- codems5
- · Replies 2 ·
Time for 50g mass to reach maximum distance on elastic rope
- skrat
- · Replies 12 ·
Temperature profile around heat source
- Haye
- · Replies 1 ·
Concentration of paint in each bowl after certain time
- skrat
- · Replies 3 ·
How Do Ladders Interact in a Frictionless Environment?
- matg360
- · Replies 1 ·
How Do You Find the Object Position for an Upright Image in a Concave Mirror?
- elementozzy
- · Replies 10 ·
How to calculate the horizontal distance traveled by a bouncing ball?
- Tizyo
- · Replies 1 ·
How Is the Diameter of an Iron Atom Calculated?
- Karol
- · Replies 12 ·
Damped harmonic motion with one end without weight free
- nomadreid
- · Replies 6 ·
What is the tension in a rotating chain attached to a wooden disc?
- Vibhor
- · Replies 6 ·
Change in temperature after an inelastic collision
- powerof
- · Replies 2 ·
Block sliding down an inclined plane
- Seahawks
- · Replies 7 ·
How Does the Period of Oscillation Change When a Block Detaches from the Wall?
- Vibhor
- · Replies 47 ·
Why NaCl does not conduct electricity in solid state?
- adjacent
- · Replies 6 ·
Electrostatic force in a medium of non uniform permittivity
- PhysicoRaj
- · Replies 5 ·
Motion of a Charged Particle - Jumbled Notes, Unsure of Possibility
- ToXic_Knight
- · Replies 3 ·
How to apply Coulomb's law for a system with a dielectric slab?
- sankalpmittal
- · Replies 5 ·
Resultant force on the piston at the end of stroke
- kelvin macks
- · Replies 3 ·
Work done by person and friction on box pushed at constant speed
- ThatDude
- · Replies 8 ·
Car passing 8 lines in 0.4 seconds: is velocity 35 m/s?
- new hand
- · Replies 16 ·
Acceleration differences between an Alpha Particle and an Electron.
- ToXic_Knight
- · Replies 1 ·
Condition of simple harmonic motion
- kelvin macks
- · Replies 4 ·
Can someone balance these weights?
- chemistrymole
- · Replies 7 ·
3 point electrical charge problem
- ievans_wsu
- · Replies 2 ·
Spring Constant - Bungee Jumping
- Speedking96
- · Replies 5 ·
Calculate CO concentration at high altitude
- jwingeart
- · Replies 7 ·
Solving Net-Force Question: 20 kg Crate, F = 200 N
- Emperor
- · Replies 1 ·
Why Does an Object at a Lens's Focal Point Create an Image at the Same Location?
- Seydlitz
- · Replies 3 ·
How can we create standing waves on a string with only one fixed end?
- alingy1
- · Replies 12 ·
Finding Phase Shift in RLC Circuits
- jacksonwiley
- · Replies 3 ·
Why use high density material in flywheel energy storage
- caddy5384
- · Replies 8 ·
Why can't a surface pump lift water from a very deep well?
- Maxo
- · Replies 6 ·
Thermal Conductivity and latent heat
- risingabove
- · Replies 3 ·
Solving for Unstretched Length in Jump Problem: ##l_0 = 97.5m##
- STEMucator
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Lennard-Jones-Potential: Equation of motion
- TanGeriN
- · Replies 1 ·
What is the peak velocity of the shot putter's weighted ball?
- PVnRT81
- · Replies 5 ·
Webassign Find Strength of Magnetic Field using Java App
- SchrodingersMu
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Solving 0.02 kg Ice and 0.10 kg Water at 0°C to Melted State
- risingabove
- · Replies 8 ·
An Atwoods Machine hanging from the ceiling
- x86
- · Replies 29 ·
Calculating work done on a gas- Adiabatic process PV diagram.
- jjcp
- · Replies 2 ·
Two pulley problem with mismatched answer
- ietr
- · Replies 8 ·
Are any of these textbook answers actually correct?
- alingy1
- · Replies 6 ·
How to Solve a Space Truss Statics Problem with Ball and Socket Supports?
- LucasSG
- · Replies 1 ·
Find Frequency to Minimize Impedance of RLC Circuit
- jacksonwiley
- · Replies 12 ·
Blocks and pulley with mass - rotational dynamics
- jsrev
- · Replies 11 ·
[Highschool Physics] Kirchoff's Rules
- 4Phreal
- · Replies 2 ·
What is the peak current for this circuit?
- jacksonwiley
- · Replies 6 ·
Find the Angle between Due East and the System after the Collision
- Art_Vandelay
- · Replies 8 ·
Waves, Bungee Jumping, Linear Density Definition
- alingy1
- · Replies 1 ·
Charged Particle Moving in a Magnetic Field
- Farina
- · Replies 8 ·
Monkey in an Elevator: Calculating Tension & Acceleration
- syavian1019
- · Replies 2 ·
Tension in rope for stuntman swinging in circular arc
- BrainMan
- · Replies 27 ·
Solving for Distance and Time Using Newton's Equations of Motion
- risingabove
- · Replies 8 ·