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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Calculating Power Use on a Hill with Air Resistance and Friction
- Simonpe
- · Replies 4 ·
Chain sliding off the edge of a table
- gaborfk
- · Replies 9 ·
What is the value of K that makes x+y=K perpendicular to the curve y=x^2?
- furkang
- · Replies 2 ·
Solving Trigonometric Problems with the Laws of Sines and Cosines
- Poweranimals
- · Replies 2 ·
How Long Does a Cricket Take to Jump Portions of Its Full Leap?
- BronBurs
- · Replies 4 ·
Finding a Value of N for a Limit Question: How to Solve |r(x) - 3x/2| < 0.001
- johnnyICON
- · Replies 5 ·
Intersection of surfaces/tangent vector
- Odyssey
- · Replies 2 ·
Help needed with physics problem from earlier post
- stunner5000pt
- · Replies 2 ·
Two trains leave a station, and an observer misses them both what does he see
- stunner5000pt
- · Replies 2 ·
Bullet embedded in wood block travels 1.65 m
- nazarip
- · Replies 8 ·
Vector function for the curve of intersection of the paraboloid
- DeadxBunny
- · Replies 2 ·
Torque from magnetic field/current
- PPhilly
- · Replies 2 ·
Calculating Current Needed to Lift a Cross Piece in a Horizontal Magnetic Field
- Physicsisfun2005
- · Replies 2 ·
Just need to be pointed in the right direction
- rx-[7]
- · Replies 2 ·
Force exerted to stop falling object
- splinter
- · Replies 4 ·
How Is Energy Dissipated by Friction Calculated in a Moving Train?
- envscigrl
- · Replies 2 ·
Learning Coupled Motion in AP Physics
- Calgria
- · Replies 3 ·
How Do Angles Affect Puck Movement in a Non-Head-On Collision?
- shawonna23
- · Replies 3 ·
What Evidence Supports Light's Ability to Travel Through a Vacuum?
- krypt0nite
- · Replies 2 ·
Wheel and turntable with different angular velocity
- physicsss
- · Replies 5 ·
Force in truss member BC as angle of support surface varies
- LewisNL
- · Replies 2 ·
How Does Electrostatic Induction Affect Neutral Objects?
- punjabi_monster
- · Replies 2 ·
What is the acceleration of a block sliding down a slope?
- Novus Dakota
- · Replies 2 ·
Centrifugal force in high pressure vessel
- drewman13
- · Replies 7 ·
What Is the Maximum Kinetic Energy of a Pendulum Bob?
- envscigrl
- · Replies 2 ·
Angular speed of rod with 2 masses seems EZ but NOT
- Elbhi
- · Replies 2 ·
Is Gravity Always Negatively Affecting a Ball?
- UrbanXrisis
- · Replies 63 ·
Momentum + Friction force = me depressed
- dabouncerx24
- · Replies 4 ·
Does Widening the Slit Increase Brightness in Young's Slit Experiment?
- saltrock
- · Replies 4 ·
Find the next line in the sequence
- hailee
- · Replies 5 ·
What magnitude of force must you apply to hold the platform in this position?
- rrastam
- · Replies 2 ·
How Do I Solve Parts C and D for a Stone on a Spring Problem?
- HobieDude16
- · Replies 2 ·
Coefficient of friction on rock of 0.70
- zero1520
- · Replies 4 ·
How Does a Magnetic Field Affect a Charged Particle's Motion?
- vsage
- · Replies 2 ·
Minimum acceleration for block to slide down 28° incline
- jhson114
- · Replies 20 ·
Centripetal force on lettuce in a spinning salad spinner
- benji
- · Replies 7 ·
Future of Fire: What's In Store?
- Nezrin
- · Replies 9 ·
Objects in Equilibrium/Center of Gravity
- BlackMamba
- · Replies 16 ·
Find the direction and magnitude of the impulse
- dg_5021
- · Replies 2 ·
Changing angular acceleration of a shaft
- jmf322
- · Replies 2 ·
Energy of UV and IR photons at 320nm and 5000nm
- Math Is Hard
- · Replies 2 ·
Expanding (x+h)^(1/3) using the binomial theorem
- JasonRox
- · Replies 6 ·
Where to find essays by professors?
- majinknight
- · Replies 2 ·
Wood Movement Due to Rubber vs. Aluminum Bullet Impact: Explanation
- butz3
- · Replies 2 ·
Finding block velocity after collision with conservation of momentum
- Lannie
- · Replies 3 ·
Protons to accelerate a space probe
- josephcollins
- · Replies 2 ·
Finding a 3x3 Matrix D that Satisfies a Given Equation
- Divergent13
- · Replies 4 ·
How Far Will a Box Slide Before Stopping If Pushed with a Force of 21.9N?
- Alem2000
- · Replies 2 ·
How is the English Grading System for A-level Mathematics?
- ponjavic
- · Replies 4 ·
Finding the constant a for an improper integral with Gaussian function
- FancyNut
- · Replies 4 ·
Calculating Impact Speed of Meteor Falling from 811 km
- strugglin-physics
- · Replies 5 ·
What is the tension force of each cable?
- compute_a_nerd
- · Replies 4 ·
Integrating the force equation when velocity drops to zero
- Speags
- · Replies 2 ·
Mass on rotating frictionless wedge speed after rising distance L
- hauthuong
- · Replies 8 ·
Resonant Frequency and Air Column Length
- garytse86
- · Replies 5 ·
Calculating Speed of a Rolling Cart with Added Mass and Running Man
- ElectricMile
- · Replies 4 ·
What is the integral of sin^3 theta?
- redshift
- · Replies 4 ·
Why Are Helium, Neon, and Argon Considered Inert?
- ruby_duby
- · Replies 2 ·
Hockey Puck Motion: Determining Position & Time to Rest
- Speags
- · Replies 2 ·
Does a Car Exhibit Simple Harmonic Motion?
- garytse86
- · Replies 4 ·
Finding critical angle for lawnmower push force singularity
- viendong
- · Replies 3 ·
Building a non-electric fan for a wind tunnel assignment
- wogdogg
- · Replies 2 ·
Ferris Wheel Centripetal Force: Solving a Vertical Circular Motion Problem
- gaborfk
- · Replies 2 ·
Solving a Friction Force and Coefficient of Friction Problem
- nitegrl
- · Replies 2 ·
Differential Equations lesson today
- mystro
- · Replies 2 ·
Calculating New Blood Pressure with Drug-Induced Arteriole Radius Increase
- HeatherMrkr
- · Replies 2 ·
How Do Diffraction Gratings Affect Light Wavelengths?
- wolfson_1123
- · Replies 2 ·
Complex conjugates and analyticity
- Hypnotoad
- · Replies 6 ·
One question on conservation of mass and energy
- stunner5000pt
- · Replies 1 ·
Two Stats questions for Math nerds (std. deviation, mean, subsets)
- ski
- · Replies 2 ·
How much work is done by friction in this scenario?
- Hughey85
- · Replies 2 ·
How High Will the Block Rise After Hitting the Spring?
- Hughey85
- · Replies 2 ·
Calculating Velocity in a Sticky Situation
- FancyNut
- · Replies 4 ·
How Do Different Frequencies Affect Sound Intensity Levels?
- Himura Kenshin
- · Replies 2 ·
How Is Power Calculated in a Simple Work-Energy Problem?
- StonieJ
- · Replies 2 ·
Mnemonic devices for derivatives
- Shay10825
- · Replies 2 ·
Mass spectrometer radius of the path
- 1timeuse
- · Replies 2 ·
Magnetic field of a lightning bolt
- 1timeuse
- · Replies 2 ·
RC circuit charging and discharging problem
- tinhnho
- · Replies 2 ·
How Far Is a Point from a Wire Given Current and Magnetic Field?
- 1timeuse
- · Replies 2 ·
How Do You Calculate and Graph Impedance in RC Filters?
- Monsu
- · Replies 2 ·
Fluid Mechanics Density problems
- Susan
- · Replies 2 ·
What is the correct speed of the bullet at impact with the block?
- doxigywlz
- · Replies 13 ·
How Does Kirchhoff's Loop Rule Apply to a Two Battery, Three Resistor Circuit?
- helpme12345
- · Replies 4 ·
What Is the Correct Formula for the Self Inductance of a Solenoid?
- Monsu
- · Replies 2 ·
Calculate the forces against the puck?
- Tanya Back
- · Replies 2 ·
Will Jack's swing break the vine?
- vtech
- · Replies 2 ·
How much time does it take to lift the piano?
- BlackMamba
- · Replies 2 ·
How Is Work Calculated in the Presence of Kinetic Friction?
- shawonna23
- · Replies 2 ·
Is the Color Spectrum Just a Fraction of the Electromagnetic Spectrum?
- krypt0nite
- · Replies 2 ·
Preparing Physics Tournament Project: Wind-Powered Car Design
- ponjavic
- · Replies 5 ·
Average acceleration of an air cart from two velocity measurements
- miranda82
- · Replies 9 ·
How Does Wind Affect a Boat's Speed and Direction?
- guru
- · Replies 4 ·
Momentum Conservation in Tennis Ball Collision
- quick
- · Replies 3 ·
Why Must m Be a Power of 2 for 2^m + 1 to Be Prime?
- Zurtex
- · Replies 2 ·
Is a Skydiver at Terminal Velocity an Inertial Reference Frame?
- Soaring Crane
- · Replies 2 ·
Finding atmosphere height from weight and constant density
- EdenKhan
- · Replies 2 ·
Can a Baseball Thrown at 25 m/s Hit a Window 13 Meters High and 50 Meters Away?
- descartes75
- · Replies 4 ·
Finding Fx when the angle doesn't create a right angle
- Aladdinnas
- · Replies 2 ·