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.

Threads

Find C in general sine function

  • Endorser
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4
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1

How Is Work Related to Changes in Kinetic Energy in a Rocket Car's Deceleration?

  • mousemouse123
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4

Internal Resistance of a Battery problem

  • dancergirlie
  • · Replies 6 ·
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6

Finding average speed for round trip with different speeds

  • frizzler43
  • · Replies 4 ·
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4

How Do You Calculate the Return Path in Vector Addition?

  • Resmo112
  • · Replies 12 ·
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12

Could somebody define Cell current?

  • Phys.ics
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3

Specific volume and density problem

  • Xyius
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2

What Tension is Needed to Maintain Wavelength When Frequency Doubles?

  • name_ask17
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3

Basketball player shooting ball, finding velocity for a no backboard shot

  • BlazdNConfusd
  • · Replies 2 ·
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2

Energy equivalence between linear and rotational motion

  • Waxbear
  • · Replies 7 ·
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7

Finding the average force on a box in a collision

  • alexdude777
  • · Replies 9 ·
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9

Understanding Angular Size Calculation: Europa and Jupiter

  • blink_1992
  • · Replies 3 ·
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3

Relating molecular speed distribution to rotational speed

  • Clairepie
  • · Replies 3 ·
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3

Calculating Electric Field and Force in a Coaxial Cable

  • dimpledur
  • · Replies 1 ·
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1

What Value of q Maximizes the Repulsive Force Between Two Charges?

  • aaronmilk3
  • · Replies 2 ·
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2

What is the Angle θ for No Net Force on Electron 2?

  • aaronmilk3
  • · Replies 1 ·
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1

Density of floating wood and a person in water

  • jerick232002
  • · Replies 7 ·
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7

Does the center conductor count as an equipotential surface?

  • dimpledur
  • · Replies 2 ·
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2

Finding the Voltage Rating of a Battery in Fig. 3

  • letalea
  • · Replies 1 ·
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1

Difference between electronics and physics.

  • alirizwan
  • · Replies 4 ·
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4

Brachistochrone with velocity - still a cycloid

  • Grand
  • · Replies 3 ·
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3

Finding net electric field from three point charges

  • vitaebellaa
  • · Replies 1 ·
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1

Gauss' Law Hollow Sphere with Charged Ball

  • hy23
  • · Replies 1 ·
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1

Expansion of a Compressible Gas

  • El Moriana
  • · Replies 2 ·
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2

How Wide Is the River Jean Camped Beside?

  • Meliora
  • · Replies 3 ·
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3

Conservation of Energy with kinematics

  • joej24
  • · Replies 2 ·
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2

How Far Does the 2 kg Mass Travel Before Reaching Maximum Speed?

  • zxfhero
  • · Replies 15 ·
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15

Kinetic energy ratio for same speed on Earth and moon

  • IntegrateMe
  • · Replies 2 ·
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2

Calculating earth gravity by using centripetal acceleration

  • ankhmor
  • · Replies 1 ·
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1

Is the fundamental frequency of a given swing constant?

  • binbagsss
  • · Replies 1 ·
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1

Car motion from acceleration-time histogram

  • BraindeadX64
  • · Replies 11 ·
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11

Which situation will induce the greatest current flow?

  • JustinLiang
  • · Replies 1 ·
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1

Calorimetry problem involving tea and ice

  • mcnivvitz
  • · Replies 4 ·
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4

Converting MPH to Light years/century

  • rkennedy9064
  • · Replies 2 ·
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2

Velocity of charged particle in a uniform electric field

  • pcml100
  • · Replies 12 ·
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12

The total system momentum vector before the collision is approximately

  • Acestein
  • · Replies 2 ·
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2

Maximum x component force on a particle given orientation

  • jegues
  • · Replies 4 ·
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4

Force between point charges and third charge to double force

  • aurao2003
  • · Replies 2 ·
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2

Air Resistance and Projectile Motion

  • AlexChandler
  • · Replies 6 ·
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6

Finding Maximum Tension in a String

  • Andriko
  • · Replies 2 ·
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2

Using voltmeters to measure voltage

  • JustinLiang
  • · Replies 3 ·
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3

Voltage and energy when closing a switch between two capacitors and a resistor

  • Clever-Name
  • · Replies 5 ·
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5

How Do You Calculate the Potential Energy in a Stretched Two-Spring System?

  • jcfor3ver
  • · Replies 1 ·
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1

Elevator Problem: Find Tension in Cable

  • eagleeyecherr
  • · Replies 1 ·
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1

Velocity Vs Time Conceptual Question

  • neon612
  • · Replies 4 ·
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4

How do you linearize this equation (terminal velocity in fluid)?

  • Ryker
  • · Replies 7 ·
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7

Can someone draw this diagram for me because I must be getting the wrong picture

  • smashbrohamme
  • · Replies 3 ·
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3

Finding the Direction of Resultant Vector: A Vector Addition Problem

  • sycho2
  • · Replies 2 ·
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2

Crumple zone dimensional analysis and acceleration limit

  • jcfor3ver
  • · Replies 1 ·
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1

Magnitude and coordinate direction angles of the resultant force.

  • bbarke00
  • · Replies 1 ·
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1

Power dissipated by form drag on a vehicle

  • jcfor3ver
  • · Replies 3 ·
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3
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1

Relative Motion: Solving Kinematic Problems with Multiple Moving Objects

  • btbam91
  • · Replies 4 ·
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4

What Is the Final Angular Velocity of a Rod After Being Struck by a Bullet?

  • Abhishekdas
  • · Replies 6 ·
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6

Why does using larger particles make average impulses tend to zero?

  • binbagsss
  • · Replies 1 ·
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1

Electrostatic force between two objects

  • chaslltt
  • · Replies 2 ·
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2

Not sure if this a math or physics problem.

  • flyingpig
  • · Replies 9 ·
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9

Finding amplitude and wavelength from a standing wave equation

  • cosmogirl90
  • · Replies 3 ·
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3

Earthquake distance to seismograph

  • Hypnos_16
  • · Replies 16 ·
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16

Electric field at a point from three equal positive charges

  • flyingpig
  • · Replies 46 ·
2
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46

Instantaneous Velocity graph problem

  • iiskenny
  • · Replies 3 ·
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3

Rocket Car Acceleration Analysis

  • songoku
  • · Replies 16 ·
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16

Surface Energy Calculation: 8-24(πr^2S)

  • vissh
  • · Replies 2 ·
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2

How Fast Must a Spaceship Travel to Cross the Galaxy in 35 Years?

  • feuxfollets
  • · Replies 1 ·
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1

What is the height of water in an inclined capillary tube?

  • vissh
  • · Replies 1 ·
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1

Spacecraft path to a pulsar with constant acceleration

  • Astro.padma
  • · Replies 18 ·
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18

What Is the Speed of a Wave If a Jetskier Moves at 8.30 m/s?

  • Hypnos_16
  • · Replies 5 ·
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5

C12B 2011 Problem 23Finding Zero Net Magnetic Field Points in Crossed Wires

  • HoneyDeeLite
  • · Replies 1 ·
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1

Electric field inside a solid charged metal rod

  • flyingpig
  • · Replies 12 ·
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12

Are these two equations dimensionally correct in the MKS system?

  • hthrcru
  • · Replies 2 ·
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2

How does the depth of an object in water affect its horizontal force?

  • jimmy42
  • · Replies 3 ·
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3

Physics problem involving tension and electric fields

  • aaronmilk3
  • · Replies 2 ·
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2

Finding charge on a sphere from orbiting proton

  • aaronmilk3
  • · Replies 4 ·
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4

How to calculate the location of drops in a falling water shower?

  • way2fasts
  • · Replies 1 ·
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1

Using F = v*dm/dt + m*dv/dt with variable mass in barges and coal

  • kanjames
  • · Replies 8 ·
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8

What Is the Final State of Water and Ice After Mixing?

  • psychkub
  • · Replies 4 ·
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4

Electric field from three point charges at different distances

  • fisixC
  • · Replies 1 ·
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1

Magnitude of Electric Field in Insulating Cylinder

  • nolachrymose
  • · Replies 3 ·
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3

Centripetal Force + Frictional Force + Braking

  • Theorγ
  • · Replies 5 ·
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5

Calculating Electric Field at a Given Position Due to a π- Particle

  • Squall
  • · Replies 3 ·
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3

Finding an Unknown Charge using Coulomb's Law

  • whatisphysics
  • · Replies 1 ·
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1

Weight, net force, and acceleration

  • Tastosis
  • · Replies 1 ·
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1

Having Trouble With Dipole Torque and Work

  • ccelt09
  • · Replies 3 ·
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3

How Do You Solve an Oscillation Problem Involving a Vertical Spring and Block?

  • kittykatxox
  • · Replies 1 ·
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1

Task of building a water barometer.

  • killersanta
  • · Replies 1 ·
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1

How Is Acceleration Calculated for a Bullet in a Rifle Barrel?

  • iiskenny
  • · Replies 1 ·
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1

Ceiling Fan Blade Acceleration and Angle Calculation

  • eiriyuki
  • · Replies 9 ·
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9

Ceiling Fan Angular Acceleration

  • mohabitar
  • · Replies 2 ·
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2

Light intensity through 2 slits

  • Nihalum
  • · Replies 1 ·
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1

Entropy change as mass tends to infinity

  • blueyellow
  • · Replies 1 ·
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1

Yes, that gives the correct answer.

  • Crazynutjob
  • · Replies 7 ·
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7

Simplifying a complex algebraic expression with multiple variables

  • xilc
  • · Replies 1 ·
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1

Calculating change in volume (bulk modulus)

  • togo
  • · Replies 1 ·
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1

Need some hints for a Coulomb's Law question

  • whatisphysics
  • · Replies 6 ·
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6

Capacitors - energy stored vs work done

  • RK1992
  • · Replies 4 ·
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4

Application of the Dot Product (Arfken and Weber)

  • rwc0613
  • · Replies 5 ·
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5

How Does Projectile Motion Work When Launched from a Moving Object?

  • idlackage
  • · Replies 3 ·
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3

Calculating pressure given dia. and pounds

  • togo
  • · Replies 2 ·
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2

Bullet penetrating wood block: finding stopping time and retarding force

  • Tastosis
  • · Replies 10 ·
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10