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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Calculate the friction coefficient
- AfuBaf
- · Replies 1 ·
Angular Momentum Problem (from Giancoli)
- bobblo
- · Replies 1 ·
Doppler effect for reflected sound between moving cars
- desmond iking
- · Replies 5 ·
Rectangular Plate with Varying Density Across the Width
- taits2204
- · Replies 10 ·
Are the wavelength of standing wave and sound wave produced same?
- somecelxis
- · Replies 3 ·
Why Don't We Consider the Distance to the Earth's Center for Potential Energy?
- Karol
- · Replies 4 ·
What is the relationship between beat period and cosine cycles in a graph?
- somecelxis
- · Replies 8 ·
Distance traveled by projectile in Free Fall
- fluidity
- · Replies 3 ·
Why isn't distance from the source included in sound intensity factors?
- somecelxis
- · Replies 5 ·
Solar panel energy equations and output calculations
- BrainMan
- · Replies 4 ·
What Are the Velocities of Two Masses Connected by a Spring at Initial Length?
- Karol
- · Replies 5 ·
Moment of inertia of rectangle without dd int
- stateofdogma
- · Replies 4 ·
Application of low resistance wire
- somecelxis
- · Replies 2 ·
What does N25°W mean in vector notation?
- daniw871
- · Replies 1 ·
What is the Geometrical Proof for the Coordinate Transformation Formula?
- Karol
- · Replies 2 ·
Do identical spaceships feel the same force with fixed power engines?
- mrhoneycinnamo
- · Replies 2 ·
Projectile trajectory with quadratic drag force
- matineesuxxx
- · Replies 14 ·
Factors affecting sound intensity
- somecelxis
- · Replies 1 ·
Does an Electromagnet Create Charge?
- ajcoelho
- · Replies 1 ·
How Do You Calculate the Series Resistance for a Voltmeter Using a Galvanometer?
- Myr73
- · Replies 4 ·
Finding the exponent n in image size proportional to R^n for concave mirrors
- DriggyBoy
- · Replies 6 ·
How Does a Woman Walking on a Turntable Affect Its Rotation?
- BrainMan
- · Replies 7 ·
Block on slope: comparing tilted and standard axes
- knowLittle
- · Replies 2 ·
Angular acceleration of pulley with two masses
- KKazaniecki
- · Replies 9 ·
Find EMF - Loop inside a loop generating a magnetic field
- ichivictus
- · Replies 10 ·
Solving for Angular Velocity in Trapeze Performance
- BrainMan
- · Replies 14 ·
Disk conservation of momentum problem
- BrainMan
- · Replies 4 ·
Tension particle between two strings
- WannabeNewton
- · Replies 8 ·
Replacing two couples with one equivalent couple when P=0
- utkarshakash
- · Replies 2 ·
2014 F = MA #15 Torque Output Engine
- Jzhang27143
- · Replies 5 ·
How Do You Calculate Applied Force with Mass and Friction Coefficients?
- summerchambers
- · Replies 6 ·
Understanding Perpendicular Vector Components
- fightboy
- · Replies 2 ·
Static Slope Problem: Find Downward Force at Fulcrum
- dhc107
- · Replies 3 ·
Relationship between linear and rotational kinetic energy
- BrainMan
- · Replies 4 ·
Non uniform surface charge density
- amjad-sh
- · Replies 2 ·
Angular Acceleration and torque problem
- BrainMan
- · Replies 22 ·
Moment of Inertia for Half Disk
- bphys348
- · Replies 7 ·
Question Interpretation: "Describe the energy conversions in spring"
- Jaimie
- · Replies 3 ·
Solving Heat Added to Gas + Mass Density of a Gas
- physicsgirl199
- · Replies 1 ·
A student holding weights angular momentum problem
- BrainMan
- · Replies 5 ·
A Spider on a rotating disk conservation of momentum
- BrainMan
- · Replies 29 ·
How Does Increasing Current in Helmholtz Coils Affect Electron Motion Radius?
- NJFocusST
- · Replies 1 ·
Torque and angular acceleration pulley problem
- BrainMan
- · Replies 2 ·
What is the new angular velocity when a man moves on a rotating merry-go-round?
- BrainMan
- · Replies 2 ·
What is the tension in a rope with mass?
- Govind_Balaji
- · Replies 7 ·
Electric Fields -- Charges at corners of equilateral triangle
- Myr73
- · Replies 4 ·
Why are there four images in two parallel mirrors instead of three?
- alingy1
- · Replies 1 ·
How far does a charged particle travel before stopping near a repelling charge?
- Myr73
- · Replies 8 ·
What is the emf of the ideal battery in this circuit?
- STEMucator
- · Replies 1 ·
Field in the region of the image charge
- fede.na
- · Replies 1 ·
Res-Monster Maze: Find Current Through R
- STEMucator
- · Replies 3 ·
Basketball player dunk - impulse, net force, GRF
- antonystad
- · Replies 1 ·
RC circuit with multiple resistors and capacitors
- STEMucator
- · Replies 3 ·
Circuit with two batteries and three 120Ω resistors for 21mA current
- STEMucator
- · Replies 1 ·
Velocity of bullet relative to its mirror image after firing
- DriggyBoy
- · Replies 5 ·
Grpah of l versus 1/f (sound wave)
- somecelxis
- · Replies 1 ·
Conservation of Angular and Linear Momentum
- Jzhang27143
- · Replies 3 ·
Distance of closest approach of like charge
- Satvik Pandey
- · Replies 19 ·
What does it mean for grain to not impart momentum to a train car?
- thonwer
- · Replies 14 ·
Acceleration vs Force graphWhat am I doing wrong?
- Crovati
- · Replies 11 ·
Finding max height and acceleration vector for projectile
- Vibhor
- · Replies 7 ·
Doppler compensation formula for moving sound source
- bwinter
- · Replies 6 ·
Why can battery terminals be switched in Kirchhoff's rules analysis?
- nazopo
- · Replies 2 ·
Question: "A child on a sled (m=47.0 kg) slides down a long hill "
- Jaimie
- · Replies 2 ·
Obtaining potential from Lorentz Force
- iScience
- · Replies 1 ·
What Is the Minimum Deceleration to Prevent Two Trains from Colliding?
- showzen
- · Replies 4 ·
Electric Field at Center of Equilateral Triangle
- Myr73
- · Replies 17 ·
Inductance and Instantaneous Current
- 4Phreal
- · Replies 2 ·
What are some challenging physics questions on motion and acceleration?
- gakusei_98
- · Replies 13 ·
Finding the Mass from an Acceleration vs Force graph
- Crovati
- · Replies 2 ·
What is the peak strength of the Electric Field
- zoomba91210
- · Replies 1 ·
Single slit diffraction pattern in 2D
- alingy1
- · Replies 1 ·
How Far Must Point P Be from Speaker A for Constructive Interference at 400 Hz?
- Firben
- · Replies 1 ·
Fleming's left and Right hand rule
- adjacent
- · Replies 18 ·
Minimizing tension in the cables
- utkarshakash
- · Replies 20 ·
Solving for angular acceleration when both angle and angular velocity vary
- Brucezhou
- · Replies 8 ·
Calculating Maximum Air Cooling Capacity for Room w/ 2 Computers
- Fleet
- · Replies 1 ·
Finding current magnitudes and directions using Kirchhoff's rules
- emuhlay08
- · Replies 6 ·
How Does Coulomb's Law Explain Forces and Fields Between Charges?
- emuhlay08
- · Replies 3 ·
Partial pressure ratio of gases at different altitudes
- Chetlin
- · Replies 2 ·
How Should Electric Potential Energy Be Ranked at Point P?
- STEMucator
- · Replies 3 ·
Capacitors in series with dielectrics
- STEMucator
- · Replies 4 ·
What is the Efficiency of the system?
- kathy
- · Replies 1 ·
Isolated and non isolated conductors
- amjad-sh
- · Replies 6 ·
Identifying capacitors in series and parallel
- STEMucator
- · Replies 6 ·
Moment of Inertia - Find Area Around Y-Axis
- Cheerios
- · Replies 1 ·
Is a thermoscope a reliable instrument for measuring temperature?
- Portuga
- · Replies 1 ·
Physics-electric charge(coulomb's law)
- josejayant13
- · Replies 4 ·
Rocket with constant acceleration for 16s, reaching 5100m at 20s
- ryanbersa
- · Replies 14 ·
Which Average Velocity Formula Should I Use?
- fightboy
- · Replies 3 ·
Finding the Potential at a specific point in this Circuit
- tmint
- · Replies 1 ·
Solving Basic Vector Problems: Understanding Direction and Speed in Cricket
- tinybang
- · Replies 5 ·
How Does a Pendulum Behave When Its Support Accelerates Horizontally?
- Dazed&Confused
- · Replies 10 ·
Modified Harmonic Oscillator probabilities
- ma18
- · Replies 2 ·
Finding applied force and static friction coefficient
- summerchambers
- · Replies 12 ·
Circuit with multiple batteries finding the current through each one
- tmint
- · Replies 9 ·
Which of the following changes would result in the greatest deltatime?
- needingtoknow
- · Replies 3 ·
Help with two resistor circuit problems
- pandaboi
- · Replies 6 ·
Wall Cavity Insulation Question?
- jake96
- · Replies 9 ·
Derivation of Planck's constant
- lsimpson1943
- · Replies 6 ·