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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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 ·
Overlooking something, Need Help
- timpn86
- · Replies 3 ·
Question about Newton's Third Law of Motion
- 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 ·
Are These Answers Correct? True False E&M
- 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 ·
Properties of Gases: Volume Change with Cooling & Pressure Increase
- 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 ·
How Do You Calculate the Orbital Period of a Satellite?
- 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 ·
Vector addition and subtraction
- 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 of Wave and Reflected Wave
- lordy2010
- · Replies 2 ·
I'm going to cry Need help setting up kinematics problems
- linglingpopo
- · Replies 2 ·
What Current Prevents the Cylinder from Rolling Down the Inclined Plane?
- carah90
- · Replies 2 ·
Magnitude of Electric Field at a Point
- 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 ·
Please help: Normal force for box on an inclined plane = mg/cos(theta)?
- 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 ·
There HAS to be a mistake in this question (simple vectors question) please look
- Femme_physics
- · Replies 5 ·
Ratio of RMS Speed of Oxygen to Nitrogen Molecules
- Pseudopro
- · Replies 2 ·
Explaining Electric Flux with Enclosed Charges
- 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 ·
Two Masses, a Pulley, and an Inclined Plane
- 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 ·
Analyzing Frictionless Motion: Va vs Vb
- kuuooomar
- · Replies 2 ·
Struggling with Phase Change Problems? Need Help Understanding the Concepts?
- lolphysics3
- · Replies 1 ·
Particle Launched over 13.7m Gorge - Speed & Angle Calculation
- 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 ·
Physics Grade 12 Electricity (WHAT DID I DO WRONG)
- 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 ·
Finding the electric field of a electric quadrupole
- n387g
- · Replies 6 ·
Calculating Orbital Period of Asteroid Between Mars & Jupiter
- Havenater23
- · Replies 11 ·
Entropy of Cube-Water System Problem
- VitaX
- · Replies 5 ·