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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Unpolarized Light Intensity problem
- hardwork
- · Replies 3 ·
Torque on a small loop by a large loop?
- zyphriss2
- · Replies 1 ·
Magnetic field from two crossed current-carrying wires
- hardwork
- · Replies 3 ·
Man walking on plank balanced at roof edge
- einstein18
- · Replies 1 ·
Why does the photoelectric effect only occur above a certain frequency of light?
- ffrog
- · Replies 8 ·
Experiment for middle school with Uniform Acceleration
- Alexi
- · Replies 2 ·
Energy to put space shuttle in orbit
- calculator20
- · Replies 6 ·
Projectile motion ball question
- Kristin_Z
- · Replies 4 ·
Concave mirror equation calculation
- synergix
- · Replies 2 ·
Equations of motion accounting for drag
- Egaston
- · Replies 4 ·
Wave behavior in a rope with density gradient
- Yuqing
- · Replies 3 ·
Torque, Rod Balanced on Fulcrum
- rmunoz
- · Replies 1 ·
Work done by friction in a system
- Angeee
- · Replies 4 ·
Calculate Earth's Magnetic Flux at a Certain Location
- muffintop
- · Replies 2 ·
How Does Capacitor Separation Affect Its Half-Life in a Circuit?
- -EquinoX-
- · Replies 1 ·
Conservation of Energy in a roller coaster cart question
- Risca
- · Replies 8 ·
Can You Calculate Resistance If You Know the Half-Life of a Capacitor?
- -EquinoX-
- · Replies 1 ·
How Does an Antiproton Accelerate in Combined Electric and Magnetic Fields?
- ursulan
- · Replies 2 ·
What is the Archer's Velocity After Firing Two Arrows on Frictionless Ice?
- aaronb
- · Replies 3 ·
What is the angular momentum of uncle's tire immediately upon its departure?
- mattmannmf
- · Replies 5 ·
Expressing Biot-Savart Law using diagram
- berg1188
- · Replies 6 ·
Find V of a partical in B field :O
- SoulofLoneWlf
- · Replies 7 ·
Understanding Translational and Rotational Kinetic Energy in a Rolling Sphere
- mattmannmf
- · Replies 6 ·
What Resistor Value Is Needed to Power a 1.4W, 4.0V Bulb with a 9.0V Battery?
- alwaysdazed
- · Replies 1 ·
Understanding Tension Force: Two Elephants Pulling a Rope
- oxnume
- · Replies 1 ·
Cross Product of Antiparallel Vectors: qvXb Maybe Not?
- SoulofLoneWlf
- · Replies 2 ·
What Is the Cost of Energy Loss in a Low Voltage Power Supply System?
- alwaysdazed
- · Replies 7 ·
Rotational inertia of two glued disks using integration
- rmunoz
- · Replies 2 ·
Solve Mass and Dist. of Bar Weights: x-m
- mattmannmf
- · Replies 1 ·
Finding bicep force and elbow joint force holding a horizontal ball
- mattmannmf
- · Replies 1 ·
What is the Trajectory of Four Rockets in a Square Formation?
- onsem
- · Replies 4 ·
Wave Interference and wavelength
- satchmo05
- · Replies 2 ·
De broglie wavelength and energy
- marpple
- · Replies 8 ·
Wave Optics: Light in Water & Glass Wedge - Find Thickness/Angle
- lha08
- · Replies 3 ·
What Wavelengths Are Missing in the Reflected Light from a Thin Film Coating?
- lha08
- · Replies 5 ·
Internal Energy and kinetic friction
- hats_06
- · Replies 3 ·
Solve Scattering Problem: Find Wall Thickness for Half Incident Particles
- Anro
- · Replies 2 ·
1.3 Iridov - Find Time Interval ( Kinematics )
- razored
- · Replies 4 ·
How Do You Calculate the Velocity of a Comet at Different Points in Its Orbit?
- fball558
- · Replies 1 ·
How Do You Solve This Pulley and Friction Problem?
- AcecA
- · Replies 1 ·
Point charge on a string in an electric field
- swede5670
- · Replies 6 ·
Finding equivalent resistance when second switch closes in RC circuit
- valarking
- · Replies 8 ·
What is the magnitude of the force on a calcium ion
- robera1
- · Replies 2 ·
What is the derivation of the centripetal acceleration in terms of position?
- unknown_2
- · Replies 3 ·
Capacitance of Concentric Shells (different charges)
- Hemmer
- · Replies 1 ·
Static Equilibrium - When will this guy bail off his ladder?
- wizzle
- · Replies 6 ·
Ionic Solution Current Calculation
- chainsaw
- · Replies 3 ·
How Can You Determine Inductance and Resistance in an LC Circuit?
- jayjay112
- · Replies 8 ·
A +12 nC charge is located at the origin
- rushton_19
- · Replies 2 ·
What is the Flow Velocity in Irodov's Motorboat Problem?
- razored
- · Replies 4 ·
Discrepancy between Sun's radiated max wavelength and it's apparent color
- ramuramu
- · Replies 2 ·
Total energy of rolling sphere without given radius
- BlueSkyy
- · Replies 7 ·
What is the direction of the current in the loop?
- physics19
- · Replies 1 ·
Gravitational Potential Energy of a projectile
- lu6cifer
- · Replies 1 ·
Particle Velocity and Distance in a Straight Line with -2v Acceleration
- AcecA
- · Replies 2 ·
How Do You Calculate Principal Stresses and Orientations in a 2D Stress State?
- rock.freak667
- · Replies 0 ·
Electric field in cylinder with missing section
- hawaiigurl123
- · Replies 4 ·
State what is meant by the compressive strength of a material
- CharS
- · Replies 1 ·
Satellites, Orbits and Gravitational Energy
- lu6cifer
- · Replies 2 ·
Torque - Lady on a diving board
- tascja
- · Replies 1 ·
What is the magnitude of the downward force
- catmd13
- · Replies 1 ·
Coefficient of kinetic friction between the two blocks
- Squeezebox
- · Replies 1 ·
Electrostatics and infinately charged plate question driving me nuts
- ursulan
- · Replies 5 ·
Finding cylinder mass from falling stone and string
- Todd88
- · Replies 1 ·
Rotational Kinetic Energy of a grinding wheel
- Todd88
- · Replies 2 ·
Understanding Electrical Resonance in AC Circuits
- jayjay112
- · Replies 3 ·
Total Kinetic Energy in a System
- Todd88
- · Replies 1 ·
Bullet Lodges In Baseball (vertical)
- Schoomy
- · Replies 8 ·
A positively charged elctroscope near a finger
- Jimenen
- · Replies 1 ·
Does the make sense (momentum conservation)
- ashvuck101
- · Replies 8 ·
Calculate Voltage Across Resistor Without Voltmeter
- kyip
- · Replies 6 ·
Transverse wave equation period
- james brug
- · Replies 1 ·
How to find a resistor value from a circuit graph
- confuse
- · Replies 2 ·
Solving for Amplitude and delta
- shadowice
- · Replies 3 ·
What is wrong with my solutionÉ
- davedave
- · Replies 1 ·
Capacitance from a separated plate disk
- -EquinoX-
- · Replies 2 ·
Submarine Fires Torpedo, Submarine's Recoil?
- Schoomy
- · Replies 16 ·
Linearly polarized light and its field strength.
- mimibajiduh
- · Replies 1 ·
Angular momentum of a multicomponent system
- guitarman
- · Replies 7 ·
Projectile motion with a region of 0 acceleration
- suchara
- · Replies 1 ·
Physics Conservation of Matter Question
- TigerLilly
- · Replies 3 ·
Chemical energy in the runner's body
- courtneylane8
- · Replies 5 ·
Angular Momentum of a wheel at a Location
- jchojnac
- · Replies 7 ·
Rotational Speed of a Space Station
- guitarman
- · Replies 2 ·
Buoyant Forces and Archimedes' Principle
- science.girl
- · Replies 6 ·
How Far is the Second Object from the Convex Mirror?
- lizzyann31
- · Replies 1 ·
How Large is x(t) at Maximum Acceleration for an Oscillating Block?
- shadowice
- · Replies 2 ·
KE and U Energy in Spring Gun Question
- intenzxboi
- · Replies 2 ·
Finding final momentum and initial angular momentum after elastic collision
- fball558
- · Replies 2 ·
Electric Fields and Forces in water
- km7
- · Replies 1 ·
Thermal expansion of a pendulum
- fluidistic
- · Replies 4 ·
How does a sudden doubling of the mass of a star affect the orbit of a planet?
- marmot
- · Replies 10 ·
Solving Rolling and Collision Homework: Find Veloc. & Ang. Vel. of Sphere
- ritwik06
- · Replies 3 ·
Electric field and potential inside and outside a uniformly charged sphere
- Dorney
- · Replies 2 ·
Luminosity of 85 Pegasi A, B, C using absolute magnitude
- victoriafello
- · Replies 5 ·
How Does Pulley Friction Affect Block Acceleration?
- unknown_2
- · Replies 2 ·
Calculating Pressure Change Due to Immersion in Water
- science.girl
- · Replies 5 ·
How do I turn a parabolic curve into a straight line?
- twenty5
- · Replies 2 ·