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 Gravitational Potential Energy of a Child on a Swing
- nazarip
- · Replies 4 ·
Max and Min Applied Force for Stationary Block on Inclined Plane
- thenewbosco
- · Replies 7 ·
Where Can I Find Free Software for Simple Geometrical Drafting?
- dekoi
- · Replies 2 ·
How Can Two Perpendicular Vectors with Different Magnitudes Sum Up to (6, 8)?
- stunner5000pt
- · Replies 7 ·
Finding g(y) using Clairaut's theorem with mixed partial derivatives
- matpo39
- · Replies 2 ·
Can you calculate the speed of a man jumping onto a spring-loaded platform?
- quick02si
- · Replies 2 ·
Limit as h->0 when [cos(pi/2+h)]/h
- UrbanXrisis
- · Replies 2 ·
Question from Fundamentals of Physics, 6th edition (exhanced) .
- evermoore
- · Replies 4 ·
An object fired upward at a speed of 3.000 m/s
- SpeedeRi2
- · Replies 2 ·
Calculating Cube Deceleration on a Moving Board
- caseys
- · Replies 2 ·
Molecular Polarities and Physical Properties of Molecules
- v22
- · Replies 2 ·
What do permeability and permittivity of free space mean?
- garytse86
- · Replies 3 ·
How Does Center of Mass Influence Collision Outcomes?
- envscigrl
- · Replies 2 ·
What Is the Ideal Length for a Half Wave Dipole Aerial at 120MHz?
- Sanosuke Sagara
- · Replies 2 ·
An object travels in a straight line at a uniform velocity
- SpeedeRi2
- · Replies 3 ·
Vectors around a circular track
- seanlindo06
- · Replies 2 ·
Torque/acceleration with masses on pulley
- vtech
- · Replies 3 ·
Probability that randomly chosen dogs are from the same state
- OptimusPrime
- · Replies 2 ·
What'd I do wrong? [Angular Kinematics]
- AERam
- · Replies 2 ·
How Do Forces Distribute Among Blocks on a Frictionless Surface?
- jhson114
- · Replies 2 ·
Does the middle of the Earth spin faster than the outer part?
- Me247
- · Replies 2 ·
Mass and Velocity in Elastic Collisions
- tumbler19
- · Replies 3 ·
Distribution functions
- buddingscientist
- · Replies 4 ·
Can VSEPR theory be used for ionic molecules like BeF2?
- Tanya Back
- · Replies 2 ·
Electric field between -8.0 µC and +6.0 µC charges 4 cm apart
- joej
- · Replies 2 ·
Calculating Revolutions/Minute for Centrifuge at 4.62 cm Radius
- matchboxdude
- · Replies 7 ·
Electric Field and Potential of Thin Charged Metal Plates: Analysis and Sketch
- stunner5000pt
- · Replies 2 ·
Finding clockwise and counterclockwise torques from a diagram
- pinky2468
- · Replies 2 ·
Total distance traveled at 10 m/s for 3 seconds, then 5 m/s for 2 seconds
- SpeedeRi2
- · Replies 5 ·
Young's Modulus/Breaking Point
- Reisen
- · Replies 1 ·
Parallel Transport and Triangle Excess Angle
- jimbo007
- · Replies 1 ·
Cartesian coordinates and in polar coordinates?
- Poweranimals
- · Replies 2 ·
Calculate max height and t in max height?
- SpeedeRi2
- · Replies 2 ·
Particle deflection in magnetic field and charged ball entering field
- kristi.lynn
- · Replies 2 ·
Newtonian Gravitation with an extended body
- freemind
- · Replies 7 ·
Moments of Inertia, almost got it
- sisigsarap
- · Replies 4 ·
How Do You Calculate the Speed and Deflection of a Wave on a String?
- saksham
- · Replies 2 ·
Why is the force to lift a 52 kg crate only 260 N in a pulley system?
- tony873004
- · Replies 4 ·
Ball Rise Trajectory: How Fast Was the Ball Moving?
- UrbanXrisis
- · Replies 3 ·
How Can Physics Help in Making a Musical Instrument?
- knowmad
- · Replies 3 ·
How to sketch and find the volume of a solid from an integral
- Spectre32
- · Replies 6 ·
Ice Surfing: Solving the Physics of Motion
- Chileboy
- · Replies 2 ·
Calculating Weight Changes in a Looping Plane
- Tanya Back
- · Replies 2 ·
A car crashes into a concrete wall
- envscigrl
- · Replies 2 ·
Acceleration due to gravity on the Moon
- Mazdak
- · Replies 2 ·
Measuring coefficient of friction with only a ruler
- freemind
- · Replies 2 ·
How Do You Calculate the Minimum Angle to Push a Mop Considering Friction?
- newcool
- · Replies 10 ·
What is the tension in the string between two blocks with friction?
- Mivz18
- · Replies 8 ·
How do I find the tangential acceleration in non-uniform circular motion?
- mad
- · Replies 11 ·
Isotopes/uncertainty in measurement
- yxgao
- · Replies 7 ·
Egg drop landing pad with paper, straws, and styrofoam cups
- acsokker
- · Replies 7 ·
Is (a × b) × c zero when c is perpendicular to both a and b?
- Chen
- · Replies 4 ·
What are the intensity and wave properties of two simple wave problems?
- saksham
- · Replies 3 ·
How Do You Solve a Frictionless Pulley System with Unequal Masses?
- SnowOwl18
- · Replies 2 ·
Basic Physics - Spinning Head (mine)
- PhysicsNovice
- · Replies 9 ·
Total force on a charge at the origin from three point charges
- suf7
- · Replies 42 ·
Angular Displacement: Solving for a Mountain Bike Wheel
- SnowOwl18
- · Replies 5 ·
Projectile motion with aerodynamic drag
- guywinford
- · Replies 3 ·
Calculating Jet Engine Output of an Airplane
- physicsss
- · Replies 2 ·
What is the speed of the space shuttle when a ball is dropped?
- UrbanXrisis
- · Replies 6 ·
Calculate the position of the center of mass of the weighted wheel
- physicsss
- · Replies 2 ·
Equations and explanation for wind car theory
- alen
- · Replies 6 ·
Pre-Algebra Struggles: What Can I Do?
- iownyou81
- · Replies 2 ·
Calculate stopping distance on level ground
- Lannie
- · Replies 2 ·
Converting ρ(1-2cos²φ)=-ρsin²φ to cylindrical and rectangular
- DeadxBunny
- · Replies 2 ·
What Angle and Normal Force Are Involved When Pulling a Suitcase?
- jlshoop
- · Replies 10 ·
Determine the magnitude and direction of the resultant force
- Kdawg
- · Replies 2 ·
Electrostatic Forces on Charged Spheres: Calculations and Comparisons
- maxx
- · Replies 3 ·
Solving Spring/Work Problem: Find Block's Movement on Incline
- Fert
- · Replies 2 ·
Real numbers x and y, f(x+y)=f(x)+f(y)+1. If f(1)=2, what is f(3)?
- Xasuke
- · Replies 4 ·
Why put a zero beside the remainder instead of above it in long division
- roger
- · Replies 12 ·
Why Do My Calculations on Frictionless Hill Physics Seem Incorrect?
- kimikims
- · Replies 2 ·
Final speed of 12-pack pushed 1.60 m with friction
- rrastam
- · Replies 2 ·
Coefficient of friction for button on rotating platform at 40 and 60 rpm
- ashik
- · Replies 2 ·
Net force on square loop from parallel current-carrying wire
- vsage
- · Replies 2 ·
Propagation of errors? (lab phenomenon question)
- StonieJ
- · Replies 10 ·
Vectory Geometry, problem involving spheres
- josephcollins
- · Replies 2 ·
Finding GCD and LCM of 175 and 35 using prime factorization
- dogma
- · Replies 5 ·
Power series approximation of ∫₀^(1/3) x² arctan(x⁴) dx
- DivGradCurl
- · Replies 3 ·
Forces and centripital acceleration
- benji
- · Replies 2 ·
What Is the Acceleration of Two Blocks in a Frictional System?
- natalydj83
- · Replies 2 ·
Moment of inertia of a three-legged stool with disk and rods
- BlackMamba
- · Replies 3 ·
Remainder bounds for series with ratio test conditions
- DivGradCurl
- · Replies 2 ·
Struggling to Solve a Spring + Gravity Problem
- underthebridge
- · Replies 2 ·
Calculating Potential Energy for 16 kg Object
- strugglin-physics
- · Replies 2 ·
In terms of Einstein's theory of heat capacity
- stunner5000pt
- · Replies 2 ·
Equilibrium Formula Derivation for Torque and Lever Systems
- pinky2468
- · Replies 2 ·
Calculate Tension: Mass, Examples, How To
- preet
- · Replies 3 ·
Question on Photoelectric effect
- stunner5000pt
- · Replies 7 ·
Solve Superman Problem: Stop Train in <1 hr
- SnowOwl18
- · Replies 2 ·
How Do Newton's Laws Apply in Calculating Contact Force Between Boxes?
- pulau_tiga
- · Replies 2 ·
Calculating Laser Beam Power and Wave Crests per Second at 632.8nm Wavelength
- stunner5000pt
- · Replies 3 ·
Calculating Electron Revolutions per Second in Electric Force Field
- guru
- · Replies 2 ·
Arghhh Coordinate geometry question
- ultraviolent
- · Replies 3 ·
What Determines Points of Zero Net Electric Potential Between Charged Particles?
- rishid
- · Replies 2 ·
Work done by hamster to accelerate exercise wheel
- Hughey85
- · Replies 2 ·
Find Min Distance from x=20 to y=3√(x-15)
- buffgilville
- · Replies 2 ·
Find the constant of vain (wien)
- stunner5000pt
- · Replies 5 ·