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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Kinematics>>Equations of Motion
- SunnyH
- · Replies 1 ·
Calculating Charge and Potential in a Series RC Circuit
- terryds
- · Replies 20 ·
(forces) Find the force problem
- Brittany W
- · Replies 3 ·
Why doesn't the gravity affect the torque along the z axis?
- Physicslearner1
- · Replies 11 ·
Why is the velocity at the cusp point equal to the final velocity on the hill?
- ButteredCatParadox
- · Replies 10 ·
What is the solution to the spring and disk rotation problem?
- Arman777
- · Replies 15 ·
Initial Voltage in an RC circuit with a Current Source and no Voltage Source
- Bassa
- · Replies 13 ·
Force to pull 85 kg roller over a step at 45 degrees
- mtig
- · Replies 9 ·
How can power and work be calculated using friction and known mass and distance?
- Alex126
- · Replies 8 ·
Solving specific heat problem with two materials
- HDTeach
- · Replies 7 ·
Conditions for waves to be coherent?
- MBBphys
- · Replies 1 ·
Potential Energy vs. Position Graphs
- sunnnystrong
- · Replies 4 ·
Why is the integral of a(x) different from the integral of a(t)?
- Elias Waranoi
- · Replies 10 ·
Two air-track carts pushed apart by compressed spring
- sunnnystrong
- · Replies 17 ·
Finding third charge coordinates in an equilibrium position
- AdrianMachin
- · Replies 7 ·
Pencil movement on a no-friction table
- DimosNat
- · Replies 3 ·
Equal magnitude forces on two charges from Coulomb's law
- Luke0034
- · Replies 2 ·
Friction in a rolling disk on an incline
- Vitani11
- · Replies 4 ·
Finding moment of inertia of cone
- Vitani11
- · Replies 4 ·
Dynamics Questions // Elastic Collision with different Vo
- sunnnystrong
- · Replies 14 ·
Final amplitude with damping of bungee cord
- timetraveller123
- · Replies 8 ·
Stress calculation for Q1(1) and converting to N/tex units
- billy722
- · Replies 28 ·
Spring set makes up a traveling wave
- Jenny Physics
- · Replies 16 ·
Finding mass per unit length for a harp string tuned to C4
- Torrie
- · Replies 11 ·
Minimum proton speed to miss lower plate between charged parallel plates
- Vanessa Avila
- · Replies 2 ·
Sound of vibrating string - modes
- Torrie
- · Replies 2 ·
Friction of rubber box on concrete floor
- anon3005
- · Replies 5 ·
How Does Time Affect the Displacement of a Plucked Violin String?
- danmel413
- · Replies 2 ·
Kinetic Energy in Circular Motion: Is 1/2 m v^2 Still Applicable?
- JiggaMan
- · Replies 2 ·
Charged particle in magnetic field parallel to y-axis
- Macykc2
- · Replies 8 ·
Calculating Forces and Kinetic Friction for a System of Connected Blocks
- Sagrebella
- · Replies 12 ·
Electric Flux and Electric Flux Density
- CoolDude420
- · Replies 4 ·
Net electric field from four point charges
- Jrlinton
- · Replies 1 ·
Spacecraft splitting into two near a planet
- Noakhailla Hola
- · Replies 5 ·
Compound lens separated by a distance
- Toby_phys
- · Replies 1 ·
Moment of inertia of a set of spinning disks
- OrlandoLewis
- · Replies 25 ·
What happens to the moment of inertia when a rod is folded?
- OrlandoLewis
- · Replies 9 ·
How do I calculate the luminosity of a Random Beanbag Machine?
- Adrian1234
- · Replies 1 ·
How to compute the magnitude of a initial velocity u
- javii
- · Replies 5 ·
Find the magnitude of the electric field at regions 2 and 3.
- Mason Smith
- · Replies 3 ·
Calculate the cost of the energy lost to heat per hour per meter
- NasuSama
- · Replies 5 ·
Why is friction pointing down the ramp on an inclined surface?
- Ricardeo Xavier
- · Replies 5 ·
How exactly does Hawking radiation work?
- caspeerrr
- · Replies 4 ·
What Angle Maximizes Air Time for a 34.6m Football Punt?
- mh_99
- · Replies 2 ·
What is the potential at the top of R2 in this circuit?
- marchcha
- · Replies 16 ·
How do I calculate the coefficient of friction in a static friction problem?
- Pysics86
- · Replies 7 ·
T-shirt launcher and Projectile motion
- Sagrebella
- · Replies 16 ·
Capacitor question -- charging time for an RC circuit
- Mausam
- · Replies 27 ·
Why Does Maximum Water Velocity Occur at the Surface?
- fonseh
- · Replies 37 ·
Finding the Distance Between Sound and Wave Maxima at a Train Station
- timetraveller123
- · Replies 8 ·
Quantum Harmonic Oscillator Problem
- Crush1986
- · Replies 4 ·
What should the speed of a pion be
- annalian
- · Replies 3 ·
Maximum Height of Ball on U-Shaped Ramp
- Arman777
- · Replies 17 ·
Electric field due to a flat circular disk
- grandpa2390
- · Replies 3 ·
Why does rope tension equal 2Tsin(θ) for the vertical force?
- calivianya
- · Replies 3 ·
Find the magnitude of charge density for a power line
- jlmccart03
- · Replies 1 ·
Mutual Inductance: Rectangle w/ Variable Height
- Ashley1nOnly
- · Replies 2 ·
Find the two figures and the get value of the resistor and current
- Hamood97
- · Replies 5 ·
Can Light Wavelength Remain Unchanged at High Velocities?
- AishaGirl
- · Replies 8 ·
Is Reynolds number ρvD/μ or ρvR/μ?
- fonseh
- · Replies 7 ·
Does work against friction need the pushing force magnitude?
- Alex126
- · Replies 5 ·
Is it possible to convert ρ (density) to Newtons?
- geofix
- · Replies 19 ·
Inductor and bulb in an circuit
- aryan pandey
- · Replies 7 ·
How to find electric potential given only velocity
- jlmccart03
- · Replies 5 ·
Kayak crossing river with current: finding velocity, time, and drift
- Sagrebella
- · Replies 16 ·
Derive the wave equation for fields E, B from the potentials
- phenomenologic
- · Replies 4 ·
Electric Fields Question, What is the speed of the electron?
- Rangers1994
- · Replies 1 ·
Magnitude of the work done by electric field.
- jlmccart03
- · Replies 2 ·
How to find the equation for the maximum velocity possible
- brenna_s
- · Replies 3 ·
Magnitude and angle of an electric field vector
- Jrlinton
- · Replies 6 ·
How Does Charge Movement Affect Electric Potential and Kinetic Energy?
- jlmccart03
- · Replies 3 ·
What was the initial velocity of the rocket
- Vitani11
- · Replies 9 ·
Derivation of capacitance for two shells
- Stendhal
- · Replies 4 ·
Answer: Neutron Interference: Understanding Kinetic Energy
- aryan pandey
- · Replies 3 ·
What is the approach to solving this AC circuit voltage problem using phasors?
- aryan pandey
- · Replies 5 ·
Anti-reflective coating on lenses and UV protection
- AlexisFair
- · Replies 3 ·
Does Friction Affect Momentum in a Spring-Driven Spacecraft?
- Leyzorek
- · Replies 11 ·
Work done by a Carnot Engine. Melting ice
- The Real Simon
- · Replies 2 ·
Finding spring energy as function of wheel rotation angle
- member 428835
- · Replies 19 ·
How Do You Calculate Tension in Unequally Lengthed Cables Lifting a Beam?
- tooperoo
- · Replies 10 ·
Conversion vectors in cylindrical to cartesian coordinates
- ForTheGreater
- · Replies 6 ·
Car on incline with elastic cord: energy and rebound distance
- Samil
- · Replies 1 ·
Speed of an electron due to a ring charge
- Stendhal
- · Replies 11 ·
Relative velocity during a race?
- Sagrebella
- · Replies 12 ·
Determine voltage - complete response
- Cocoleia
- · Replies 8 ·
A laser emitting light with a wavelength of 560 nm (Single slit).
- LionLieOn
- · Replies 3 ·
Calculating the volume of a nucleus
- rebc
- · Replies 7 ·
SHM question (Is my method correct?)
- Faiq
- · Replies 7 ·
Heat conduction rate through a cylindrical shell
- encorelui2
- · Replies 4 ·
Parallel plate capacitor voltage question
- needhelpplease
- · Replies 8 ·
Capacitor Charge Density Calculation
- PhysKid45
- · Replies 2 ·
Calculating Time to Return to Starting Point in a River with Constant Current
- Sagrebella
- · Replies 3 ·
Using Lagrangian to derive the equation of motion
- mmalon15
- · Replies 3 ·
Exponential of hermitian matrix
- ZCOR
- · Replies 4 ·
Calculating Force and Impulse of a Bullet Hitting a Man
- StormPix
- · Replies 1 ·
Mean distance between air molecules
- songoku
- · Replies 10 ·
Conical pendulum in rotating frame
- StrangelyQuarky
- · Replies 1 ·
Potential in a sphere in a dielectric
- nagyn
- · Replies 7 ·
Calculating rest mass and energy (in an inertial frame)
- CricK0es
- · Replies 5 ·
Calculating the Top Accelerations of a Falling Chimney
- Arman777
- · Replies 8 ·