Introductory Physics Homework Help Forum

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Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
How much force is needed to push a shopping cart up an incline?
  • owenhigdon
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May you me with grade twelve physics?
  • lanvin
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Nonuniform circular motion of particle
  • dumbdude
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How do you see the sun after it has set?
  • soggybread
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How to find intensity in double slit
  • kelambumlm
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What Is the Expected Rate of Return on a $3 Million Investment Over Ten Years?
  • jhayes
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Bits, Bytes, transmission rates
  • Timiop2008
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Need help with a question, probably quick to answer
  • LukasNZ
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1
How Does Thrust Affect a Satellite's Orbit?
  • Muteb
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2
Print ViewBlackbody Radiation and Continuous Spectra
  • Sasa888
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2
How Can Physics Enhance Our Understanding of Pianos Beyond Mechanics?
  • SMB20
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1
What is the Direction of the Net Force on Earth?
  • laxanimal
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6
Wave Properties ans Sound Waves
  • barfbite
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Physics Problem about Heat Phase Change
  • fireandice
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1
Temperature Estimation for Compressed Air in an Internal Combustion Engine
  • cubixguy77
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1
Torque/angular momentum/etc questions
  • musicfairy
  • · Replies 9 ·
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9
Finding the mass of a planet using gravitational acceleration and radius
  • PrometheuSIT
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2
Why is the sign in the formula Δy=VoyT - (1/2)at² negative in this problem
  • Mindstein
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What is the magnitude of the torque about his shoulder
  • leisiminger
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1
Underwater Lightbulb Optical Illusion - Reflection/Refraction of Light
  • physicsgator
  • · Replies 1 ·
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1
Radius of curvature of the cornea
  • spaghed87
  • · Replies 9 ·
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9
What is the spring constant in this scenario?
  • vincisonfire
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3
Solving a Carnot Engine Question: Power Output and Wasted Energy Calculation
  • joe215
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Calculating Speed in an Elastic Bumper Car Collision
  • Oliviam12
  • · Replies 9 ·
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9
Electrostatics charge density
  • twotaileddemon
  • · Replies 3 ·
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3
Simple Harmonic Motion of a Bent Rod
  • HelpMeJebus
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3
Can You Spot the Errors in These Physics Problem Solutions?
  • musicfairy
  • · Replies 17 ·
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Radio Telescope Resolution - Centaurus A
  • Timiop2008
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1
What is the acceleration of the elevator?
  • Muteb
  • · Replies 3 ·
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3
Constructive/Destructive Sound Waves
  • ultrapowerpie
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1
What is the shape of a mass vs. acceleration graph?
  • liz777
  • · Replies 4 ·
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4
How Does Destructive Interference Occur Between Two Loudspeakers?
  • anubis01
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4
Solve for Length of Stroke for Air Entering Tyre
  • spirally
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6
Why is friction neglected in the equation for a rolling cylinder on an incline?
  • ritwik06
  • · Replies 7 ·
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7
How are velocity and pressure related in Bernoulli's equation?
  • senchamecad
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2
Calculating Water's Landing Point From a Hole in a Pool
  • physhelp90
  • · Replies 4 ·
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4
I don't understand an assumption the textbook made ?
  • twotaileddemon
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4
How to find frequencies giving the coeffiecent friction and amplitude?
  • kelambumlm
  • · Replies 3 ·
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3
Barometer Tube Displacement: Solving for Isothermal Process
  • Tidus
  • · Replies 3 ·
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3
Linear expansion coefficient of glass
  • nslinker
  • · Replies 8 ·
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8
Calculating Distance of Water Landing from Pool Hole | Torricelli's Theorem
  • physhelp90
  • · Replies 10 ·
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10
How Do You Calculate the Coefficient of Friction on an Inclined Slide?
  • physicsgoon
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2
What is the purpose of an Atwood machine and how does it change acceleration?
  • CaptainADHD
  • · Replies 10 ·
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Simple Harmonic Oscillator question
  • mossfan563
  • · Replies 6 ·
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6
What Is the Relative Speed of Two Parts of a Spacecraft After Detonation?
  • musicmaniac
  • · Replies 12 ·
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12
This problem i have been trying to solve it for more than hours but i could not.
  • Muteb
  • · Replies 7 ·
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7
Frictionless Bead Sliding Down A Parabola
  • devon cook
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1
Single piston engine problem - position of piston
  • grog
  • · Replies 8 ·
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Conservation Of Mechanical Energy PROBLEM
  • CoffinSupply
  • · Replies 6 ·
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Connected masses, friction enabled
  • CactuarEnigma
  • · Replies 7 ·
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7
Solving Rotational Dynamics Homework: Ball in Pipe
  • zoner7
  • · Replies 10 ·
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The Time Limit for Jogging Before Irreversible Body Damage Occurs
  • doggieslover
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2
Momentum and Its Relation to Force on a Rocket
  • JPhillips
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2
How Is Force Calculated on a Submerged Object's Window at Extreme Depths?
  • iseidthat
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Average Net Force: Kinetic Energy & Momentum
  • Maiia
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4
How Do You Calculate the Specific Gravity of Alcohol?
  • Soojin
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Conservation of energy and a spring
  • Th3Proj3ct
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Energy Lost to Friction in Spool Experiment
  • sullyjared
  • · Replies 7 ·
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How much force will be required to remove the lid?
  • iseidthat
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Air Pressure and Water Pressure
  • vrobins1
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Master Elastic Collision Problems: Basic Help | Homework Solution
  • fluidistic
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Solving Pressure & Force Homework Problem
  • vrobins1
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A nonconducting spherical shell problem
  • noppawit
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1
Calculating Final Body Temperature After Soda Consumption
  • doggieslover
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Conservation of Momentum and Kinetic Energy
  • Blangett
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Law of Conservation of Energy- mass and spring
  • Maiia
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What force do ropes exert on a sign
  • ahrog
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How Does the Angle of Incline Affect Train Motion Calculations?
  • physicsgoon
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What Happens to the Acceleration When the Thread Snaps?
  • Ulti
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Einstein model of solids, energy in joules of one quantum
  • Deadsion
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Help Needed: Solving Problems with Satellites and Ropes
  • Muteb
  • · Replies 7 ·
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Derive the magnitude and direction of the linear acceleration
  • saltine
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What Is Poynting's Vector and How Is It Calculated?
  • Jack_O
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Why Doesn't the Moon Have a Thick Atmosphere?
  • sandhiya
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A little help , rotational and youngs modulus
  • invisiblewar
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Theoretical electronics problem
  • aranud
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Inelastic collision to angular motion
  • Rubber Band
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1
How do you calculate the net efficiency of a series of heat engines?
  • Epictetus
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8
How can the weight of the ball be determined when submerged in the beaker?
  • doggieslover
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How Does Hitting a Corked, Water-Filled Soda Bottle with a Fist Break It?
  • doggieslover
  • · Replies 2 ·
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Sound Waves-Destructive Interference hw help please
  • reality99
  • · Replies 1 ·
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Young's double slit and interference maximums
  • DWill
  • · Replies 1 ·
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Gravitational Forces between three stars
  • NivekOh
  • · Replies 4 ·
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4
Solving Impulse Homework: A, B, C
  • swede5670
  • · Replies 11 ·
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Work, Velocity, Friction, and Potential Engery with a sliding block
  • Phoenixtears
  • · Replies 3 ·
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How far does an airliner wheel slip before rolling without slipping?
  • bowma166
  • · Replies 3 ·
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3
Solving Force on Rotating Bar at Pivot
  • Jennifer001
  • · Replies 1 ·
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How Do You Calculate Pendulum Velocity Using Newton's Laws?
  • cideraid
  • · Replies 14 ·
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Hooke's experiment and spring launcher
  • starrish
  • · Replies 3 ·
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Circuits and recharging battery
  • dimpledur
  • · Replies 18 ·
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Can you me with this high school problems? About projectile motion
  • lanvin
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1
How can the dynamics of falling balls be analyzed using equations of motion?
  • twofish
  • · Replies 4 ·
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4
Net Displacement of Element on String at Crossing Pulses
  • Husker70
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Is More Work Done By Lifting an Object Diagonally or Straight Up?
  • Morhas
  • · Replies 9 ·
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Calculating Moment Arm for a Force: Explained and Solved
  • mathdude88
  • · Replies 1 ·
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Understanding Centripetal Net Force in Circular Motion
  • keemosabi
  • · Replies 4 ·
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Solving the Simpsons' Eviction Homework Statement
  • shimizua
  • · Replies 4 ·
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4
What are the Unknowns in a RLC Circuit with Resonance Frequency and Impedance?
  • zakaqel
  • · Replies 8 ·
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Projectile Motion of half court basketball shot
  • halo9909
  • · Replies 12 ·
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Solving Entropy Change for 0.7 kg of Water in 12 Minutes
  • pmg
  • · Replies 4 ·
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