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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Solving Free Fall Motion Homework: Find Time in Seconds
- B18
- · Replies 22 ·
What are the possible values for the coordinate angles in 3-D space?
- Tiven white
- · Replies 1 ·
Thin Film Interference and wavelength
- Aoiumi
- · Replies 1 ·
How Does Doting a Unit Vector With a Vector A Affect the Result?
- Tiven white
- · Replies 4 ·
Nodal analysis voltage confusion
- princejan7
- · Replies 1 ·
Speed of a wave on a string and Frequency of 3rd Harmonic
- ddsMom
- · Replies 10 ·
What is the Direction of x Using the Right Hand Rule?
- Tiven white
- · Replies 3 ·
Is Scalar Addition Equivalent to Adding Parallel Vectors?
- Tiven white
- · Replies 3 ·
Finding centripetal acceleration for a 4 N pendulum bob
- tdreceiver17
- · Replies 5 ·
What Is the Distance Between the Slits in Young's Double-Slit Experiment?
- Aoiumi
- · Replies 2 ·
Coordinate angles of three dimensional vectors
- Tiven white
- · Replies 9 ·
How Do You Calculate Shear Stress in a Flowing Fluid?
- math_04
- · Replies 3 ·
How to find the the acceleration of the block M?
- avistein
- · Replies 7 ·
What is the Angle of a Conical Pendulum Rotating at 4 m/s with a 1.5m String?
- GoodOldLimbo
- · Replies 5 ·
Electron energy levels in Bohr model
- ZedCar
- · Replies 7 ·
Small cylinder inside a larger one, rolling without slipping
- peripatein
- · Replies 2 ·
Collision of particle with plate
- utkarshakash
- · Replies 3 ·
How to prove v(t) = (y(t+Δt) - y(t-Δt))/2Δt
- sabastronomia
- · Replies 4 ·
Calculation of the speed of light
- haha1234
- · Replies 8 ·
Motion on 2D surface - particle hanging from string
- Zatman
- · Replies 9 ·
Are 3D coordinate angles restricted to certain values?
- Tiven white
- · Replies 4 ·
Electrical Resistance (Easy Question)
- Coop
- · Replies 10 ·
Calculating Percentage Uncertainty for Measured Lengths
- calculator20
- · Replies 7 ·
Electric field from finite line charge at distance s
- andylie
- · Replies 2 ·
Bohr's Correspondence Principle and quantum theory
- Yosty22
- · Replies 2 ·
Representing Vectors in 3D Space
- Tiven white
- · Replies 3 ·
Conservation of linear momentum.
- whynot314
- · Replies 7 ·
Cosine of Vector: Adjacent/Hypothenuse
- Tiven white
- · Replies 12 ·
Physics Honors-Inclines-Car Rolling Down a Hill With Friction
- Medgirl314
- · Replies 14 ·
Potential for a Central Force Field
- Rococo
- · Replies 13 ·
Grade 12 Motion Problem Question
- socialfox1
- · Replies 8 ·
Physics Honors-Inclines-Car Rolling Down a Hill.
- Medgirl314
- · Replies 7 ·
Newton's Law and Friction (Ramp problem)
- Mad Season
- · Replies 3 ·
Elastic collision/ momentum question w/ conservation of energy
- mjmontgo
- · Replies 5 ·
1-D (I think) Speed to distance problem
- magnanimousto
- · Replies 3 ·
Damped Oscillator Conceptual Problem and Differential Equation Solution
- ggilvar99
- · Replies 2 ·
Saving $$ on Power Usage: Rewire Household Appliance
- fogvajarash
- · Replies 2 ·
Transistor Circuits Homework: Explaining Circuit Action as VA Changes
- Jimmy87
- · Replies 13 ·
Power radiated through a hole in small wavelength distribution
- PsychonautQQ
- · Replies 5 ·
Wiens law to calculate max frequency?
- PsychonautQQ
- · Replies 14 ·
Solved it Nope. - Piano slipping down a ramp
- Medgirl314
- · Replies 12 ·
How Does Time Dilation Affect Pion Decay in Particle Physics?
- MostlyHarmless
- · Replies 3 ·
Horizontal bar is used to support a 75-kg object between two walls
- PHYSStudent098
- · Replies 1 ·
A block slides down an inclined plane of slope angle (theta)
- PHYSStudent098
- · Replies 2 ·
A lot of questions about wave optics
- haha1234
- · Replies 3 ·
How do you do analysis of units?
- Ace.
- · Replies 1 ·
Average Speed vs. Instantaneous Speed
- Natko
- · Replies 1 ·
Why Are the 5 and 20 Ohm Resistors in Parallel?
- princejan7
- · Replies 1 ·
Relationship between frequency and length of pendulum
- Ace.
- · Replies 1 ·
Angle of Inclination for Car on Incline: 0.8 mu Friction
- Medgirl314
- · Replies 8 ·
Electric Field Problem (why don't I multiply by sin and cos?)
- blackbrawler
- · Replies 10 ·
Heat Efficiency of a Carnot Engine
- castrodisastro
- · Replies 2 ·
How do I solve the dot and cross product of 3i and jxk?
- jdawg
- · Replies 2 ·
Magnetic Forces: Deriving Equation to Balance Rider Weight
- BOAS
- · Replies 1 ·
What Is the Wind Velocity Given Airplane and Ground Speeds?
- Saeedawaw
- · Replies 14 ·
Three-mass System with Friction
- s.dyseman
- · Replies 4 ·
Intensity, frequency and amplitude
- PFuser1232
- · Replies 8 ·
DC motor. Calculate the current
- gucci
- · Replies 1 ·
What is the lapse rate in a simplified model of cloud formation?
- Saitama
- · Replies 14 ·
Why Do Simple Harmonic Motion Equations Differ?
- KiNGGeexD
- · Replies 7 ·
Understanding AFM Imaging: Protrusions and Troughs
- garyd
- · Replies 1 ·
Calculating Ball Speed for Vertical Ascent
- B18
- · Replies 9 ·
Communicating Vessels- how? (searched forum, didn't find it before)
- Bonaparte
- · Replies 3 ·
Stick being pulled by a string from the top
- thonwer
- · Replies 9 ·
Thermodynamics - PV Diagram of an Ideal Gas
- Maybe_Memorie
- · Replies 3 ·
Lorentz Transformation of y-velocity
- muffinbottoms
- · Replies 3 ·
How Does Angular Velocity Affect the Derivative of a Unit Vector?
- mech-eng
- · Replies 25 ·
Can You Catch a Falling Dollar Bill with Your Reaction Time?
- kenji1992
- · Replies 13 ·
Finding Distance with Constant Acceleration
- B18
- · Replies 3 ·
Couple moment problems - Calculate the distance?
- nchin
- · Replies 1 ·
Electric field in insulating slab
- temaire
- · Replies 1 ·
Calculating vector components (displacement, oooh)
- ellal
- · Replies 2 ·
2D Kinematics - 2 rocks off a bridge
- kenji1992
- · Replies 1 ·
Projectile motion of a ball thrown
- icesalmon
- · Replies 5 ·
Integrating Velocity When in Unit Vector Notation
- ThomasMagnus
- · Replies 3 ·
Help with circuits - resistors in parallel and in series
- chococat
- · Replies 5 ·
Potential different between two points in electric field
- songoku
- · Replies 10 ·
Using thermal conductivity to melt ice
- castrodisastro
- · Replies 4 ·
How do you calculate the location of the third virtual image?
- aleksbooker
- · Replies 4 ·
Deriving Formula for m2 in Terms of m1, a, and g in a Two Mass System
- Medgirl314
- · Replies 68 ·
Potential Energy of Point Charges
- Sneakatone
- · Replies 18 ·
Confusion over angle between vectors
- ThomasMagnus
- · Replies 5 ·
Understanding the Right Hand Rule: Determining Direction Using Cross-Products
- Tiven white
- · Replies 2 ·
Photoelectric effect and a metal plate
- Bindle
- · Replies 1 ·
Vertical Motion: Understanding Velocity at a Given Time
- jdawg
- · Replies 5 ·
Troubleshooting SHM Equations: Understanding Discrepancies and Correcting Errors
- KiNGGeexD
- · Replies 7 ·
Finding Angular Speed Using Energy Methods
- student34
- · Replies 9 ·
Calculate Solar Energy Incident on Earth at 1.5x10^11 m from Sun
- student123
- · Replies 3 ·
Two Circular Motion Questions. Pendulums
- navm1
- · Replies 19 ·
Charge accumulation using radiation
- mooreppj
- · Replies 5 ·
Conservation of Momentum of a snow ball
- gcombina
- · Replies 4 ·
Depth of a Water Well by dropping a rock
- MienTommy
- · Replies 3 ·
Angular Acceleration Problem - Compact Disc
- gcombina
- · Replies 2 ·
Vectors - velocity is changing but speed is not
- kenji1992
- · Replies 3 ·
Shortening the length of pendulum
- Saitama
- · Replies 46 ·
Kinematics - centrifuging a solution with bacteria
- kenji1992
- · Replies 13 ·
Which Equation Requires Radians to Be Valid?
- gcombina
- · Replies 2 ·
Solve Combination Circuit Homework: Req, IT, Current & Voltage
- dropgigawatt
- · Replies 2 ·
Gaussian Surface Electric Field Problem
- wompkins
- · Replies 1 ·
Electronics: Find Thevenin equivalent voltage & resistance, etc.
- oddjobmj
- · Replies 15 ·