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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Charges/Coulomb's Law/Electric Fields
- calcuseless
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Weekly Annuity Calculation Method
- k3wlm4n
- · Replies 1 ·
Ranking bulb brightness in parallel and series circuits
- illidari
- · Replies 5 ·
Flower pot falls past a window
- eay444
- · Replies 1 ·
Kinematic Equations - Why can't I solve like this?
- DaleSwanson
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What did I do wrong in finding the resultant of these vectors?
- sponsoredwalk
- · Replies 4 ·
Temperature to raise resistance
- Spoonerz
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Calculating Time and Distance for a Patrol Car Chasing a Speeder
- MatthewHaas
- · Replies 4 ·
Analyze Velocity & Vectors in Chuck & Norris Video on YouTube
- mohabitar
- · Replies 14 ·
Finding the average velocity of a car traveling at different speeds and angles
- Intrusionv2
- · Replies 2 ·
Find the extra force required to maintain the speed of the belt
- Doubell
- · Replies 2 ·
Professor leaps off a helicopter, ball thrown in the air Kinematics
- Keldroc
- · Replies 4 ·
Relative Velocity: Bird and Train Perspective
- narutodemonki
- · Replies 1 ·
[Waves] Standing waves problem (possibly )
- hiuting
- · Replies 2 ·
How long does it take mass m to fall distance h?
- vandersmissen
- · Replies 8 ·
How Does Projectile Motion Affect a Golf Ball's Landing on a Sloped Terrain?
- vande060
- · Replies 7 ·
How Do You Solve Friction Forces Involving a Cone?
- mmmboh
- · Replies 6 ·
Calculating the Orientation of a Moving Rod Using Lorentz Transformations
- TheLawR
- · Replies 2 ·
How Do You Plot a Position-Time Graph with Subtle Curves?
- gohanssj2a99
- · Replies 1 ·
Mailbag dropped from helicopter with height h = 2.60t³
- jaytm2291
- · Replies 13 ·
Magnitude and direction of the net force vector
- XwakeriderX
- · Replies 17 ·
How to interpret a negative y-intercept?
- JeremyWsmith
- · Replies 11 ·
Advanced vector question incl. parallelepiped
- agentnerdo
- · Replies 2 ·
Wave pulse travel time on a vertical rope with varying tension
- skiboka33
- · Replies 2 ·
Using Velocity Time Graph to find acceleration?
- gohanssj2a99
- · Replies 1 ·
Calculating Electron Speed from Accelerating Potential
- redneckpyhsic
- · Replies 3 ·
Projectile Motion - Initial velocity/total time
- Anyua
- · Replies 13 ·
Calculating Acceleration of a Box on a Frictionless Surface
- codyM
- · Replies 5 ·
Vectors with velocity and acceleration
- ryan1180
- · Replies 7 ·
Drawing the angular velocity graph from the acceleration vs. time graph?
- mymabelline
- · Replies 5 ·
Dimensional analysis for speed of sound in air
- agentnerdo
- · Replies 10 ·
Finding ř for a Given Vector r and its Components - Simple Vectors Problem
- Kingsley
- · Replies 3 ·
How do I solve this statics problem involving moments and finding angles?
- btbam91
- · Replies 1 ·
Finding Acceleration for Box with Pulled Rope
- AsuraSky
- · Replies 1 ·
Combining proportionality statements for R, d, and l
- qswdefrg
- · Replies 2 ·
Find potential difference across C2, C3 and charge Q3 in capacitor network
- ahazen
- · Replies 2 ·
A flea jumps 140times their height, what is their height?
- SilentBlade91
- · Replies 8 ·
Two blocks connected by string, one hanging off table
- foonis
- · Replies 11 ·
Finding launch speed given angle, height, and range
- jpd5184
- · Replies 2 ·
Maximum velocity with acceleration 7.5 m/s² and braking -10 m/s² over 105 m
- macmav
- · Replies 4 ·
Photoelectric effect/photon stuff
- ProPatto16
- · Replies 8 ·
When are tangential and radial accelerations equal in circular motion?
- ptejav
- · Replies 1 ·
Avg Coefficient of Volumetric Expansion
- k0b3
- · Replies 4 ·
Relative Velocity of a boat Question
- jt121
- · Replies 5 ·
Circular motion and radial acceleration
- ptejav
- · Replies 2 ·
Calculating Minimum Required Velocity
- ByronT
- · Replies 2 ·
Calculate Sum of Charges at Point A/B
- somasimple
- · Replies 6 ·
Moving Point Charges - Voltage Calculations
- somasimple
- · Replies 19 ·
Is the Diffraction Grating's Line Count Accurate?
- Grebulous
- · Replies 1 ·
Tension in coupling between 2nd and 3rd freight cars
- chrizzilla
- · Replies 1 ·
Constant velocity object catching up to an accelerating object
- maccam912
- · Replies 3 ·
What is the Energy Stored in a Parallel Plate Capacitor?
- ahazen
- · Replies 5 ·
Acceleration and velocity of cart travelling down an inclined plane.
- tranced
- · Replies 4 ·
Classical Relativity and Speed of Sound
- Ericv_91
- · Replies 1 ·
Find the wavelength of the particle
- fluidistic
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Solve Kinematics Problem: Autographed Baseball Falling Off Desk
- hypoovenmitts
- · Replies 2 ·
Free Fall Acceleration Problem
- chounx93
- · Replies 3 ·
Finding Velocity for the Sweep-Second Hand of a Clock
- Technicolour
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How Much Energy Does a Linearly Declining Battery Voltage Deliver Over Time?
- math1280
- · Replies 2 ·
Physics gr11 review (acceleration)
- justme_girl04
- · Replies 2 ·
How Do You Solve for Velocity and Position in Calculus Problems?
- black_hole
- · Replies 1 ·
Constant velocity questions (average speed vs. average velocity)
- cherryrocket
- · Replies 2 ·
How Do You Convert Minutes to Years and Analyze Speed Comparisons?
- bombsaway
- · Replies 1 ·
What is the minimum wavelength of x-rays produced by a 50 kV emf?
- fluidistic
- · Replies 1 ·
Solving for Cliff Height: An Alert Hiker's Task
- black_hole
- · Replies 1 ·
Should I use EMF or voltage in circuit calculations?
- Acuben
- · Replies 7 ·
What is the Electrical Potential Energy of a Nerve Cell Membrane?
- bigborat
- · Replies 1 ·
How Do You Calculate Voltage Drop Over Distance?
- bigborat
- · Replies 1 ·
How Long for Two Trains to Pass Each Other?
- P6nub
- · Replies 1 ·
What Is the Specific Gravity of a Cube Weighing 0.54kg with 5cm Sides?
- Raven1972
- · Replies 3 ·
Solve for Height of Cliff After Diver Jumps Off at 2.2m/s
- atbruick
- · Replies 2 ·
Free-Body diagram of block on plane; both move
- awelex
- · Replies 12 ·
Find resistance of copper wire.
- Spoonerz
- · Replies 2 ·
What Resistance Value is Needed for a Pacemaker Operating at 60 BPM?
- bigborat
- · Replies 1 ·
Finding density to identify unknown liquid and calculating volume of water
- SAT2400
- · Replies 5 ·
Minimum thrust of engines at lift-off
- zebra1707
- · Replies 2 ·
Problem about projectile motion
- issacnewton
- · Replies 5 ·
Understanding Isolating Transformers: Basic Concepts and Applications
- LitKey
- · Replies 4 ·
Seat Belt constraints in a crashing car
- atbruick
- · Replies 4 ·
Is acceleration zero for an entire velocity graph?
- Mustapha13
- · Replies 3 ·
Temperature Neutrons: Solve Equations for K
- pat666
- · Replies 1 ·
Number of photons emitted from a laser
- pat666
- · Replies 2 ·
Calculating Minimum Velocity for a Car to Round a Banked Curve Without Slipping
- KillaKem
- · Replies 1 ·
Physics lab, calculating/combining errors
- cjweidle
- · Replies 1 ·
Finding tension in a chain supporting a box
- mohabitar
- · Replies 8 ·
Physical Chemistry math not working out
- Roo2
- · Replies 4 ·
Calculating Hang Time for a Basketball Player's Vertical Jump
- apiwowar
- · Replies 2 ·
Thermodynamics dimensional analysis- off by 10
- darthxepher
- · Replies 2 ·
Percent uncertainty in the volume of a spherical beach ball
- Anamoly
- · Replies 12 ·
Surface charge density(error in my work)
- juggalomike
- · Replies 2 ·
Finding electric field strength from equipotential lines
- hrs90
- · Replies 6 ·
Calculating Net Displacement: East and North Components in a 50-70-20 Triangle"
- sydneyfranke
- · Replies 2 ·
Work function (photoelectric effect)
- fluidistic
- · Replies 1 ·
Solving Pulley Problem: Find T1, T2, W1, W2, Alpha
- ana111790
- · Replies 2 ·
Solving for Time: Dropping Package from Helicopter
- atbruick
- · Replies 3 ·
Stones being dropped and thrown from building
- atbruick
- · Replies 1 ·
Cannon Ball r(t) - Find Max Ø for Increasing r2
- BreakingBad
- · Replies 1 ·
How are 4 ohms and 12 ohms in parallel in this circuit?
- uniquesoljuh
- · Replies 3 ·
Calculating the mass per unit length of a string based on the graph of f vs. 1/L
- buttermellow
- · Replies 3 ·
Kinematics in one dimension - hot air balloon and bullet
- slc23
- · Replies 4 ·