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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Finding equilibrium positions for an electron between two charges
- doublea500
- · Replies 3 ·
How Do You Calculate Radial Acceleration at the Equator Due to Earth's Rotation?
- Amanda567
- · Replies 12 ·
Circuits: Solve Using Nodal and mesh Analysis
- Saladsamurai
- · Replies 3 ·
Voltage difference, current flow
- kevnm67
- · Replies 5 ·
Particle in a mag field with linear drag
- Liquidxlax
- · Replies 3 ·
What are the equations for calculating loop currents in a circuit?
- theuniverse
- · Replies 2 ·
Velocity of an electron and Conservation of energy
- kevnm67
- · Replies 4 ·
Specialy theory of relativity [Answer Check]
- AClass
- · Replies 3 ·
Around which points to make T=I(alpha)
- Karol
- · Replies 30 ·
How Does Relativistic Speed Affect Spaceship Length?
- AClass
- · Replies 3 ·
How High Must an Object Be Dropped to Achieve a Force of 203.66N?
- Moose720
- · Replies 12 ·
Circular Interference, Newton's Rings
- doogles8654
- · Replies 11 ·
Long string wrapped around cylinder. Find cylinders angular speed?
- kerbyjonsonjr
- · Replies 4 ·
How to apply bernoullie's equation
- Aditya Tarey
- · Replies 6 ·
Maximum Working Voltage of a Capacitor
- tomrja
- · Replies 2 ·
Calculating Amplitude of Standing Wave at a Given Point
- jono90one
- · Replies 1 ·
Charge on three metallic plates
- zorro
- · Replies 37 ·
Diver and baseball kinematics problems
- timpn86
- · Replies 3 ·
Does a brick exert greater force on glass than glass exerts on the brick?
- jle1092
- · Replies 2 ·
True False-two long current carrying wires?
- sona1177
- · Replies 2 ·
Transfer function for a low pass filter
- cseanm
- · Replies 1 ·
Gauss's Law with NONuniform E field
- Alex G
- · Replies 5 ·
Ray diagrams (lenses) problem. I need full explanations.
- dantenewton
- · Replies 3 ·
Magnetic field properties around a current-carrying wire
- sona1177
- · Replies 1 ·
What Angle of Bank Is Required for a Jet Fighter's Turn?
- skyisthelimit
- · Replies 3 ·
Solving Speeds of Objects after Collision with Two Angles
- Oriako
- · Replies 1 ·
Projectile motion max height problem
- dmb325
- · Replies 1 ·
How Do You Convert Colors to Red Using Given Conversion Factors?
- davie08
- · Replies 1 ·
Speed of an arrow using distance and angle with the ground
- kerbyjonsonjr
- · Replies 16 ·
Volume of hydrogen gas after cooling to 150 K and pressurizing to 600 kPa
- Ohm.
- · Replies 1 ·
How Do You Multiply Large Numbers in Scientific Notation?
- davie08
- · Replies 3 ·
Constant acceleration motion problem
- Bensky
- · Replies 9 ·
How Do You Convert Units Using Given Conversion Factors?
- davie08
- · Replies 6 ·
Finding orbital period of space station 225 km above Earth
- Havenater23
- · Replies 5 ·
How many revolutions will the car go through?
- kerbyjonsonjr
- · Replies 12 ·
Find charge density of simple electric field
- doodlepin
- · Replies 6 ·
Simple force with friction question
- Asphyxiated
- · Replies 2 ·
Finding magnitude and angle of vector sum and difference
- steve7
- · Replies 2 ·
How Do Physics Equations Explain a Motorcycle Police Chase?
- 7yler
- · Replies 8 ·
Solve Kinematics Confusion: Motorist vs Police Car
- Exuro89
- · Replies 3 ·
Exit Angle & N2: Solving 26°-64°-90° Prism Problem
- DrMcDreamy
- · Replies 5 ·
Calculating Final Photon Energy in Inverse Compton Scattering
- erok81
- · Replies 2 ·
Projectile Motion (checking my work, one question)
- drummerscott
- · Replies 3 ·
How Is the Charge on a Suspended Oil Drop Determined in Millikan's Experiment?
- spottedcow913
- · Replies 1 ·
Angle of deviation and angle of incidence?
- DrMcDreamy
- · Replies 4 ·
What is the weight of an astronaut before lift off in kilograms?
- Destiny153
- · Replies 3 ·
Finding distance of approaching charges
- spottedcow913
- · Replies 1 ·
Electric Forces between three charges
- thst1003
- · Replies 2 ·
Half of maximum possible projectile range
- kerbyjonsonjr
- · Replies 2 ·
Oscillations, velocity, elasticity
- name_ask17
- · Replies 1 ·
Algebraic Sums of Currents/EMFs in Junctions/Closed Loops
- hanagasumi
- · Replies 9 ·
Understanding Oscillation Frequencies and Mass Ratios in Elastic Systems
- name_ask17
- · Replies 1 ·
What Angles Will Hit a 91.4m Target with a 596 m/s Bullet?
- mac227
- · Replies 20 ·
How Do You Convert Time into Radians and Calculate Rotational Acceleration?
- Stevo11
- · Replies 3 ·
How Does Charge Q Affect Electric Flux Through a Hemisphere?
- Alex G
- · Replies 13 ·
Calculating Motion with Constant Acceleration: Solving for Time and Distance
- cal.queen92
- · Replies 2 ·
Phase difference between direct and reflected sound waves
- lordy2010
- · Replies 2 ·
Setting up three kinematics problems with cars and cliffs
- linglingpopo
- · Replies 2 ·
What Current Prevents the Cylinder from Rolling Down the Inclined Plane?
- carah90
- · Replies 2 ·
Electric field inside uniformly charged sphere: zero or kQr/R³?
- tylerc1991
- · Replies 1 ·
Motion in two dimension problem. Range and Height.
- greg_jones20
- · Replies 2 ·
Calculating Induced EMF in a Circular Loop Antenna
- AStaunton
- · Replies 2 ·
Spring compressed, find velocity.
- demonslayer42
- · Replies 5 ·
LC/Resonant circuit - the maximum capacitor energy
- fawk3s
- · Replies 3 ·
Solving Del Cross Question: Why is del x dB/dt = mu dJ/dt?
- miew
- · Replies 2 ·
How Do You Calculate Heat Released When Steam Turns to Ice?
- lolphysics3
- · Replies 3 ·
Incline/Spring/Pulley Friection problem
- Kevin713
- · Replies 2 ·
Frictional work inside a circle
- StephenP
- · Replies 3 ·
Calculating Speed of Light in a Diamond
- dantenewton
- · Replies 4 ·
Normal force on a box on an inclined plane
- igul222
- · Replies 4 ·
Find angular accleration to find torque
- pully89
- · Replies 1 ·
What is the meaning of the term ''refractive index of a medium''?
- dantenewton
- · Replies 1 ·
Find the distance from the source of power
- demonslayer42
- · Replies 5 ·
Positions for sound intensity max/mins
- gmmstr827
- · Replies 5 ·
Resultant vector smaller than component force in vector problem
- Femme_physics
- · Replies 5 ·
Ratio of RMS Speed of Oxygen to Nitrogen Molecules
- Pseudopro
- · Replies 2 ·
Why does moving an enclosed charge not change the flux?
- brushman
- · Replies 1 ·
A basic question on Electromagnetic Induction
- Abhishekdas
- · Replies 5 ·
Work done in an accelerating frame.
- theloathedone
- · Replies 5 ·
Why Does a Force Greater Than 4µW Cause Sliding Between Stacked Boxes?
- furor celtica
- · Replies 1 ·
Finding mass ratio for connected blocks on inclined plane with friction
- ElectricMile
- · Replies 13 ·
Work and electric potential energy of a capacitor
- awelex
- · Replies 2 ·
Phase Change Problems: How to Solve for Heat Release and Temperature Changes
- lolphysics3
- · Replies 1 ·
What Is the Capacitance of a Homemade Parallel Plate Capacitor?
- Evelima
- · Replies 2 ·
Atwood machine: does velocity increase when pulley moves?
- kuuooomar
- · Replies 2 ·
Struggling with Phase Change Problems? Need Help Understanding the Concepts?
- lolphysics3
- · Replies 1 ·
Projectile launched over a 13.7m gorge at 14° angle
- 7yler
- · Replies 2 ·
Free-Fall Physics Problem: Position, Height, Time, and Speed of a Falling Brick
- pjr65stang
- · Replies 1 ·
How Do You Calculate Gamma in Thermodynamics?
- VitaX
- · Replies 3 ·
Constructive/Deconstructive Sound Waves
- xregina12
- · Replies 2 ·
Find the magnetic field at the center of the square
- musicmar
- · Replies 1 ·
Resistance of New Wire: Answer the Question
- Magna1
- · Replies 3 ·
Position, displacement, velocity, acceleration vectors
- jensson
- · Replies 6 ·
Finding where I made an error in a Coulomb force calculation
- baller2353
- · Replies 1 ·
Charge Q is distributed uniformly over a thin rod
- Evelima
- · Replies 2 ·
Refractive Indexes of Different Colors of Jell-O
- Imagina7ion
- · Replies 3 ·
Consider two metal spheres of radii
- Sunshine748
- · Replies 1 ·
Two Light Waves Through Plastic
- Dante Tufano
- · Replies 4 ·
Equivalent Capacitance of capacitors
- Ballin27
- · Replies 1 ·
What Is the Minimum Energy Required for e + p -> Neutrino + Neutron?
- shahar weiss
- · Replies 2 ·