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.
What is the Correct Solution to a Work, Power, and Energy Problem?
  • thunderhadron
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Is a Paint Document Reliable for Answer Verification?
  • Miike012
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Finding out maximum from given velocity?
  • Richard Ros
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Electric Field with a Solid Spherical Conductor
  • Yosty22
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Weight vs Mass On Moon and Mars Imperial Units
  • BigJon
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Basic Engineering Mechanics (trigonometry)
  • ellieahlquist
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Parallel and perpendicular part of a vector
  • cytochrome
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Evaluating Temperature v time graph
  • Miike012
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Find the average and uncertainty?
  • youngveins
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Electric Field of a Conducting Sphere
  • Yosty22
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How Thick Should a Plastic Plate Be for Maximum Microwave Reflection?
  • V0ODO0CH1LD
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Calculating Acceleration and Error for a Ball Rolling Down an Inclined Plane
  • dhamaniasad
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Calculating Falling Objects: GPE, KE and Speed
  • Ravious
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Controlling fluid Flow under pressure?
  • Frangelo
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Arrangement of circuit affecting resistance measured
  • coconut62
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Finding Light Intensity with Two Offset Slits
  • Gee Wiz
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How Much Would You Weigh on Neptune?
  • davev
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4
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Multiple Blocks on incline, friction vs force.
  • Semoirethe
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11
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Question on Terminal Velocity finding time
  • baird.lindsay
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6
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Period Ratio for Horizontal and Vertical Oscillations
  • mbigras
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2
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Is the Current Calculation in the Circuit Incorrect?
  • Miike012
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3
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Constant acceleration, bike vs. car
  • Feodalherren
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3
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Grouping all of the units at the end? I.E. F=ma = 2.3*424.3 [kg*m/s]
  • WK95
  • · Replies 7 ·
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7
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3K
Capacitors in Series: Equivalent Charge Explained
  • Hercuflea
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Magnitude of a Point Charge on a Line
  • theintarnets
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1
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9K
How High Should the Mirror Be Placed for Full Reflection?
  • Daniella_123x
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3
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2K
Relationship between Electric and Magnetic Field Amplitudes in Light Waves
  • GreenPrint
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Snapshot graph of Superposition
  • mcnealymt
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1
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19K
Net Force of Charges on an Equilateral Triangle
  • theintarnets
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5
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13K
Calculating Speed for Time Dilation in the Twin Paradox
  • k3r0
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If E=C at O, what is the full force
  • jaydnul
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1
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What is the fundamental frequency of an aluminum rod?
  • mcnealymt
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9
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Finding Initial Velocity to Solve Bowling Ball Speed Problem
  • danosu43
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4
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Please check my work (friction on an incline plane)
  • iScience
  • · Replies 7 ·
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7
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Max Compression of Spring with Friction
  • iScience
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16
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Application of Gauss's Law to Charge Distribution
  • zachfoltz
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What is the significance of relative velocity in the Doppler effect?
  • PsychonautQQ
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5
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Is my method for solving the GRE Relativity Problem correct?
  • PsychonautQQ
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2
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How Many Excess Electrons Does a Negatively Charged Balloon Have?
  • jaydnul
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Question about diverging lens for correcting myopia
  • s3a
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Question Pertaining To Newton's Laws
  • Bashyboy
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20
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4K
Is Static Friction the Dominant Force in a Block on Top of a Slab System?
  • Bashyboy
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Calculating Initial Velocity of an Electron with Constant Acceleration
  • docbrown
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Finding F2 & F3 in a Hook with Given FR & F1
  • jessicapearson
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How Does Moving an Iron Rod Affect Ammeter Readings in a Solenoid Circuit?
  • Betadine
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1
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3K
Why Are My Calculations for Force on a Charge Not Matching Up?
  • kirax105strike
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Equivalent Resistance - Resistors Intertwined
  • Hurricane9
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Jerk times velocity cross position
  • d2x
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Horizontal component of an electric field at origin
  • kirax105strike
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Tension in a String with Vertical Support | Physics Homework Solution
  • student34
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Solving Kinematics and Conservation of Energy Problems | Physics Homework
  • TheRedDevil18
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Are these motion diagrams of velocity & acceleration vectors correct?
  • mileena
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How many kilograms of sand have a total surface area of 6 m^2?
  • icesalmon
  • · Replies 28 ·
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Coulomb's Law and Electric Force
  • Gazaueli
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Specific Heat Capacity of a body
  • andyrk
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Does Surface Area Affect the Coefficient of Friction?
  • k31453
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Friction on Pulleys: Axle or Surface?
  • andyrk
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Spaceship ejecting mass at right angles
  • Saitama
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Understanding Parallel Springs & the Equal Extension Assumption"
  • andyrk
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Energy transfer in solar panels
  • ZanyCat
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Problem dealing with Position and Velocity
  • mathwhiz
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Electrostatics: Equilibrium distance & Acceleration
  • Gazaueli
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Is Tension Constant in a Massless String?
  • andyrk
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Kirchhoff's Rules. Solving for currents in circuit with two batteries
  • Painguy
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Calculating Internal Energy Change in a Gas Under Constant Pressure
  • duds1234
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Finding q(t) (charge) given i(t) (current).
  • Flinchy
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Replace all the loads on the beam with one resultant force.
  • aerograce
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Arc length of a regular parametrized curve
  • tuggler
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Does Tension Affect Frequency and Velocity in Wave Equations?
  • jvdamdshdt
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Basic numeracy - exact meaning of accurate to one part in a thousand
  • tomwilliam2
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I think this problem is correct: acceleration upward at a frat house
  • mileena
  • · Replies 21 ·
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Seemingly easy mechanics problem (constant acceleration)
  • Feodalherren
  • · Replies 8 ·
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Minimizing Reflected Light Wavelengths
  • InferiorMindX
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Projectile Motion Questions: Solving for Height, Velocity, and Time
  • member2357
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Visualizing a rock passing a window
  • drjohn15
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Help with Circuits problem (KVL, KCL)
  • EE is cool
  • · Replies 14 ·
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How to solve for unknown charge position
  • PhizKid
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Calculating total force on charged particle
  • jaydnul
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Potential and Thermal Energy
  • PEZenfuego
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Need to compute distance during during acceleration of a train
  • mileena
  • · Replies 9 ·
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Physics acceleration problem: falling to ground
  • mileena
  • · Replies 14 ·
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Can Conservation of Angular Momentum Help Estimate the Mass of Binary Asteroids?
  • Beer-monster
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How Does Water Sloshing Dynamics Relate to Continuity Conditions in Physics?
  • mbigras
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Volleyball Problem involving Projectile Motion
  • inferno298
  • · Replies 11 ·
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11
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Solve Physics Problem: Find Position/Velocity
  • Telzis
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Find the distance between and object and its image
  • caitg
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How does a chain slip out of a horizontal tube?
  • Saitama
  • · Replies 17 ·
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Finding loss of energy in collision
  • Saitama
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Comparing relativistic momentum to classical
  • PsychonautQQ
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3
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4K
What is the velocity dependence in the equation of a standing wave?
  • andyrk
  • · Replies 13 ·
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Why does liquid incline in an accelerating beaker?
  • andyrk
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Calculating new velocity from velocity and momentum? Confusing
  • lovesam
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4
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How can you compare three different temperature scales?
  • Miike012
  • · Replies 6 ·
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6
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Finding Initial Velocity Components of a Projectile Using Kinematic Equations
  • Bashyboy
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5
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Show mechanical energy is not conserved in an inelastic collision.
  • brikayyy
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Finding Absolute Uncertainty Using Formulas
  • Coop
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1
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Webpage title: Understanding the Direction of Electron Flow in Circuits
  • Miike012
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2
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"Solving Rope Through a Hole Physics Problem
  • Saitama
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5
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How Much Air Is Needed to Lower Mercury in a Barometer from 75cm to 59cm?
  • Betadine
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Calculate Tension of Rope for 0.5kg Mass Dropped 0.5m in 1.5s
  • brenfox
  • · Replies 4 ·
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4
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