Introductory Physics Homework Help Forum

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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Standing Between 2 Plane Mirrors

  • Neophyte7
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Rifle recoil speed from bullet momentum

  • davedays
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6

How Is Momentum Conserved in a Glider Collision?

  • paulsberardi
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Why decompose the normal force instead of gravity in banked curves

  • starchaaser
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Two questions Speed question, momentum in collisions

  • dud8118
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Work done compressing a spring between block and wall

  • Gabbo
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3

Understanding Snapshot and History Graphs for Waves

  • bcjochim07
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Forces and finding tension of rope

  • holezch
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Friction force needed for merry-go-round circular motion

  • Socom
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What is the Maximum Velocity of a Person Falling from a 35 Meter Tower?

  • phuketman
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What is the mass of the other block in this block and pulley system?

  • candykane91
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Projectiles Problem - hardest physics problem I have ever faced

  • lolzwhut?
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Springs and Potential Energy

  • BlueEight
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What Force Accelerates a Sled on Snowy Ground?

  • mmoran
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What is the Equivalent Capacitance of a Single Capacitor Setup?

  • Sami Lakka
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When is rotational energy conserved?

  • Jimmy25
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4

Calculating Speed for High Jump of 1.60m

  • 5t34lth
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What is the Bernoulli Equation?

  • PhysicsGnome
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2
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50 kg skater pushed 0.4m with 150N force, slides 80m before stopping

  • nvallettejr
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Determining Mass of Binary Star Systems Using Center of Mass Method

  • HasuChObe
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Speed of skeleton racer at bottom of 104m track

  • Marcelgluch
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What is the magnitude of the current density across A1 ?

  • zooropa
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Solving Pixels: OCR Advancing Physics Book

  • greener1993
  • · Replies 9 ·
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A problem that i spotted about expansion;

  • Cryphonus
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Pulley and Work Energy problems

  • Homakruz
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Impulse steel ball falling on steel slab

  • offbeatjumi
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Average Power of 1000 kg Sports Car from 0 to 25 m/s

  • datajd
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Understanding Node Spacing in Standing Waves

  • maccha
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Circuit with capacitor question

  • Timiop2008
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Calculating F2 for Double and Triple Changes in Coulombs Law"

  • wilson_chem90
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Finding Rotational Energy and Acceleration of Decending Mass

  • nvallettejr
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Pressure change in air bed as temperature increases from 17 to 37°C

  • hippyhoppy
  • · Replies 12 ·
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Angular velocity for a turntable

  • captainsmith1
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Image positions in perpendicular mirrors setup

  • bcjochim07
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How Are the Masses of Binary Stars Calculated?

  • Zvaigzdute
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Universal law of gravitation(variables)

  • captainsmith1
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Cable tension at midpoint, quarter-point and support for 1600 foot span

  • gu3szwhoo
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How Is the Man's Mass Calculated from Throwing a Ball on Ice?

  • davedays
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Find number of turns in the solenoid

  • jackxxny
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6
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Collision Problem: Find Mass of Second Box

  • cjmagic
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Maximizing Strength: Smaller Angles in Guy Wires

  • coolone_888
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6

Refraction angle for shooting arrow at submerged object

  • jumbogala
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4

How Does Friction Affect a Small Block on a Moving Incline?

  • countryapple
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How Fast Does a Stapling Gun's Ram Move at Impact?

  • Cluless
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SPHERICAL CAPACITOR - with two insulating shells

  • Grommit
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An angle at which the body cannot be moved

  • Mad_Eye
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2
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Minimum Velocity for Pendulum to Clear Arc

  • warfreak131
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What Force Keeps a Submerged Rubber Ball in Equilibrium?

  • TheNextOne21
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Why is the direction of the dipole moment always taken from -q to +q?

  • ananthu
  • · Replies 8 ·
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Find the Function of a Bungee Cord for Egg Drop

  • larso5
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Finding Current and Potential Difference in a LCR Circuit

  • mgrphysics
  • · Replies 1 ·
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Calculating Torque on a Playground Merry-Go-Round

  • watwat2
  • · Replies 7 ·
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Power in fullwave rectified circuit

  • songoku
  • · Replies 5 ·
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Rigid body solid: center of mass and tendency to topple

  • ttja
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Tangential and centripetal acceleration of a bug on a rotating disk

  • Dr_bug
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Propagation of error if one of the values is 0

  • nietzsche
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A mass is attached to two strings, derive a formulas for sum of forces

  • Kat11111
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Constant Acceleration and Free Fall Problem

  • cheerspens
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Calculating the Period of a Pendulum with Varying Acceleration

  • maccha
  • · Replies 4 ·
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Study Question - Real Battery with bulb, current/resistance

  • exitwound
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Ferris Wheel Homework: Centripetal Acceleration & Forces

  • freeurmind101
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Tangential and centripetal acceleration problem

  • r_swayze
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Finding catapult work on jet without mass given

  • ayerski
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Grinding wheel stopping time and angular displacement

  • Dr_bug
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Where Is the Point of Zero Net Force Between Planet Angeles and Its Moon?

  • bobsagget
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Finding gravity from cannon projectile range on a mesa

  • jojo14
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Why Is the Equipotential Line Tangent to the Thick Black Line?

  • yitriana
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Why a glass lens cannot focus white light correctly

  • songoku
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Angular acceleration of a drill

  • Dr_bug
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Momentum Conservation in Collisions: Equal Mass Carts

  • nietzsche
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Block released from spring slides up a ramp

  • Wint
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Finding deceleration when Leroy on skateboard hits a wall

  • amandamanda3
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Pendulum and free-fall basketball lab analysis questions

  • BKelAB
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4

Pulling vs Pushing: Which is Easier for Moving Chairs?

  • coolone_888
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2

AZING PHYSICS: What Can a Cone Teach Us About Motion?

  • Sci-Fry
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Finding the Normalizing Constant for the Maxwell-Boltzmann Distribution

  • henryc09
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2

Newton's Law on Circular Motion

  • mc8569
  • · Replies 14 ·
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2-dimentional movement of a point

  • SimpliciusH
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How Fast Can an Astronaut Walk on Europa?

  • KatlynEdwards
  • · Replies 13 ·
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Velocity versus time form acceleration versus time

  • KillerZ
  • · Replies 3 ·
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Period and force for satellites at different orbital radii

  • xanthmode
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Bell shrinking due to water pressure

  • semc
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Speed of a conical pendulum bob

  • DavidDishere
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Couple Multiple Choice questions on force and centripetal acceleration.

  • DavidDishere
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Funny email received with Physics PE problem

  • lynk
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Distance between water molecules.

  • robertsa
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Average force applied by baseball on glove

  • balletgirl
  • · Replies 3 ·
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Finding Acceleration in Uniform Circular Motion

  • emyt
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Do gases have a definite volume?

  • mackygood
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Can static and kinetic friction cause motion?

  • Mola
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Calculating the Distance of Canoe Movement

  • am13
  • · Replies 3 ·
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Finding equilibrium temperature when water pours onto ice

  • catspajamas
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Theoretical Expression for %loss in Kinetic Energy

  • crazuiee
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