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 Fast Does Mars Travel Around the Sun?
  • lanvin
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How to find the Tension in a support cable?
  • MKM
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8
Friction Equilibrium Problem: Solving for Minimum Coefficient of Friction
  • Oblivion77
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6
Square Loop of Copper Wire Falls out of
  • ryguy7272
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2
Field Intensity at Point X with A(q+) and B(q-): Solve the Question
  • Suzukigold
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1
What is the Angular Velocity of a Disk and Rod Combination?
  • Bones
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1
Batteries connected in Empty Circuit
  • TFM
  • · Replies 8 ·
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8
Pressure and Temperature and Heat
  • omgitsmonica
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5
How Does a Student's Position Affect Scale Readings and Center of Gravity?
  • Soojin
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Motorcycle Wheelie (Angular Momentum)
  • Osh
  • · Replies 11 ·
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11
What is the tension in the string during the descent and ascent of a yo-yo?
  • chronorec
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5
Conservation laws (tricky, conceptual,not homework)
  • f(x)
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3
Help! Solve this Physics Problem Driving Me Crazy!
  • xRandomx210
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1
How Much Does Neutron Star Material Weigh on Earth?
  • danimal8f
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2
Compare Orbital Speeds of Satellites at Different Altitudes
  • lindz.12
  • · Replies 7 ·
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7
Projectile Motion Problems- Find Angle
  • 312213
  • · Replies 2 ·
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2
How damped harmonic oscillator affects period
  • p3forlife
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1
Projectile Motion long jumper Problems
  • 312213
  • · Replies 7 ·
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7
Speed of Pendulum: Solving for Bob at Bottom of String
  • Klaven
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1
Using Gravitational constant to get the final velocity
  • hyperkkt
  • · Replies 3 ·
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3
Calculating Bullet Speed: Pendulum Physics Homework Problem Solution
  • BugsSport
  • · Replies 3 ·
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3
How to Calculate the Volume for a Lead Balloon to Float with Helium?
  • Ronerin
  • · Replies 18 ·
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18
What is the maximum magnetic field strength?
  • dtesselstrom
  • · Replies 2 ·
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2
Maximizing Dissipation Rate in a Three-Resistance Circuit
  • Granite
  • · Replies 2 ·
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2
Reading a Potential Energy graph
  • Hyacinth42
  • · Replies 3 ·
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3
Finding planks constant from photoelectric effect
  • hayyan1
  • · Replies 6 ·
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6
Did I do this question correctly?
  • lanvin
  • · Replies 1 ·
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1
Integrating Half-Loop Radius R: Confused?
  • Thomassino
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1
Calculating Impulse in a Collision
  • itsmarasilly
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2
Uncertainty in Measuring Radioactivity: Calculating and Interpreting Results
  • Shukie
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2
Magnetic force on a wire problem
  • Sheneron
  • · Replies 6 ·
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6
How Does Temperature Affect the Movement of Mercury in a Thermometer?
  • Kingrly
  • · Replies 1 ·
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1
What is the Angular Momentum of a Planet Rotating and Orbiting a Star?
  • Bones
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2
Moments of Inertia, Kinetic Energy and rotations
  • lsatwd
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3
Find difference in pressure in this water intake pump
  • mb85
  • · Replies 4 ·
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4
Lorentz Contraction with small velocity
  • benji55545
  • · Replies 2 ·
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2
Does this make sense? Something hanging from an accelerating object
  • Cheeseburger
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1
How Does Archimedes' Principle Apply to Forces on a Submerged Cube?
  • brett812718
  • · Replies 4 ·
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4
Simple harmonic motion and energy - yet another answer key disagreement?
  • clairez93
  • · Replies 4 ·
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4
Friction Lab Troubles: Finding Static & Kinetic Friction
  • ariana0923
  • · Replies 1 ·
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Finding spring constant in elevator
  • Maiia
  • · Replies 5 ·
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5
Calculating Wave Length in Monochromatic Light
  • Kris1120
  • · Replies 3 ·
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3
Determining the Depth of a Lake
  • persephone
  • · Replies 10 ·
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10
Why Does Slide Thickness Affect Surface Tension Measurements?
  • theneedtoknow
  • · Replies 9 ·
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9
Solving SUVAT: Finding T from 2.5m/s to 7.5m/s over 45m
  • benbrooks
  • · Replies 3 ·
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3
Simple harmonic motion and frequency; answer disagrees from answer key
  • clairez93
  • · Replies 1 ·
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1
If a spring is cut in half, does the period change?
  • clairez93
  • · Replies 8 ·
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8
What is the motion of a physical pendulum with a rotating rigid body?
  • fluidistic
  • · Replies 28 ·
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28
Linear and Angular Momentum (conservation of)
  • patm95
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3
Solving Atwood Machine Lab: Determining Acceleration
  • Iokia
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2
Friction of a car going in circles
  • Smifsret
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2
Max extension of spring/ magnitude of its acceleration
  • WPCareyDevil
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2
What is the Velocity of a Falling Body with Friction in Freefall?
  • devanlevin
  • · Replies 3 ·
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Density. Please explain this solution
  • babbagandu
  • · Replies 1 ·
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How Much Mechanical Energy Does the Skier Lose?
  • bkl4life
  • · Replies 4 ·
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4
Conservation of momentum and baseball throw
  • bkl4life
  • · Replies 6 ·
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6
Calculating Car Weight & Braking Force on a Hill
  • phys1618
  • · Replies 3 ·
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3
How much work is done by the gravitational force on the crate?
  • KD-jay
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1
How Do Physics Principles Explain a Car's Trajectory and Collision Dynamics?
  • Jessicaelleig
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Conservation of Energy - Roller Coaster
  • uradnky
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2
Conservation of energy of two thrown stones
  • nns91
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4
Solving Displacement of a Ball in 5.0-15.0 Time Interval
  • Throwback24
  • · Replies 5 ·
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Find torque required to lift a mass
  • vladimir69
  • · Replies 7 ·
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7
Calculating Change in Kinetic Energy for 1D Collision
  • dbb2112
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Trigonometry related to Archery
  • MstWntd
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3
How Do You Calculate the Direction of an Equilibrant?
  • ahrog
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1
Are Coefficients of Kinetic Friction Always Less Than Static Friction?
  • austin1250
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3
What Is the Packing Fraction in a Simple Cubic Crystal Structure?
  • Timiop2008
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How Much Force Does a Horse Need to Pull a Sleigh?
  • Muteb
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7
Calculating Magnitude of Acceleration for 3.0 kg Mass w/ 2 Forces
  • Muteb
  • · Replies 6 ·
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Storing Ammonia Phase Diagram Answers
  • doggieslover
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3
What is the value of secx when sinx = -0.40 and tanx > 0?
  • Xtremeownage
  • · Replies 3 ·
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3
Weather Balloon Question: Calculating Acceleration, Velocity, and Net Force
  • ahrog
  • · Replies 4 ·
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4
What is the Speed and Tension of a Swing Ride?
  • keemosabi
  • · Replies 3 ·
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3
Elastic Collision: Solving for Velocity After Impact
  • dbb2112
  • · Replies 7 ·
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7
Flux Linkage with a coil in a solenoid
  • BadlyAddicted
  • · Replies 1 ·
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1
Two Hockey Puck Collision: Calculating Speed After Impact
  • Morhas
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3
Solving the Wave Displacement Equation: y = 0.37 sin(t - 3.88x)
  • JJones_86
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Find Final Water Temp: Heat of Fusion
  • doggieslover
  • · Replies 9 ·
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Calculating Force from a Given Potential Energy
  • dbb2112
  • · Replies 1 ·
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1
Calculating Acceleration of an Elevator with a Suspended Object: Explained
  • Muteb
  • · Replies 10 ·
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Finding gauge pressure when the faucet is turned off
  • tyro008
  • · Replies 10 ·
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2 boxes attached to sprint. concept questions.
  • reaperkid
  • · Replies 4 ·
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4
What is the minimum temperature for an air conditioned booth in Death Valley?
  • bziegler
  • · Replies 2 ·
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Voltage and current calculation on a mixed circuit
  • sylvarant
  • · Replies 2 ·
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2
Trace the path of the light ray and find angle of refraction
  • Kris1120
  • · Replies 1 ·
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Coefficient of Friction and Forces
  • pippintook
  • · Replies 3 ·
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3
Springs Equilibrium Length Question
  • grenier11
  • · Replies 1 ·
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1
What Torque is Needed to Spin a 250g Disk to 2000 RPM in 4.5 Seconds?
  • cyclemun
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1
How Do You Calculate the Force a Tractor Exerts on a Trailer on an Incline?
  • owenhigdon
  • · Replies 1 ·
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Calculating Wave Speed: Pier Fishing Observation
  • JJones_86
  • · Replies 5 ·
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5
How Do You Calculate the Moment of Inertia for an Off-Center Pivot?
  • cyclemun
  • · Replies 6 ·
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Print ViewCoefficient of Expansion Conceptual Question
  • doggieslover
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Force between a square loop and a long wire
  • StephenDoty
  • · Replies 7 ·
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7
Calculating Weight to Make Balloon Rise 116m in 17s Using Archimedes Principle
  • moeraeleizhaj
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Finding time and momentum after collision?
  • darkchii77
  • · Replies 1 ·
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Moment of Inertia of a Physical Pendulum?
  • Waich
  • · Replies 7 ·
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7
Grade 11 Physics: Spring Constant & Elevator Acceleration Problem
  • Xtremeownage
  • · Replies 5 ·
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5
Calculating Tractor Movement & Force: Winter Ditch Rescue
  • pippintook
  • · Replies 1 ·
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1
Gravitational potential energy.
  • cruisx
  • · Replies 5 ·
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5