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

Energy in destructive interference.

  • AlchemistK
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What changes when a wave move from 1 string to another.

  • ubcstudent
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3

Ideal gas law, What stands for P

  • kougou
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Elevetor and acceleration as elevator goes up - algebra involved?

  • riseofphoenix
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2

How to calculate body fat percentage

  • Cloud 9
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1

Checking my answer/approach - specific gravity of a mixture

  • Cloud 9
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Finding angular velocity after asteroid collision

  • Cpt. DeMorgan
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3

Find the maximum acceleration and accleration of a mass spring system.

  • Interception
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1

Which of the following things DOESN'T change if you double this?

  • riseofphoenix
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1

Question involving the RC of a discharging capacitor:

  • Dongorgon
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1

Creating new energy by E-m conversion - why can't this work?

  • Michael Redei
  • · Replies 9 ·
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9

Temperature of resistor in latent heat experiment.

  • peripatein
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6

Deriving D=(2M/m)^1/3r from 2GMr/D^3=Gm/r^2

  • Observatoren
  • · Replies 20 ·
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20

Is acceleration the variable graphed for an oscillating spring?

  • riseofphoenix
  • · Replies 23 ·
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23

Voltage, Resistance, and Current chart

  • bnosam
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4
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3

How Is Angular Momentum Calculated in Particle Motion?

  • thehiggsboson
  • · Replies 7 ·
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7

Finding torque from a wrench at an angle

  • riseofphoenix
  • · Replies 6 ·
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6

Bead attached to a spring and moving along a horizontal wire

  • beowulf.geata
  • · Replies 3 ·
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3

Finding center of mass of three rods joined end-to-end

  • riseofphoenix
  • · Replies 25 ·
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25

Momentum Conservation in Collisions

  • johns123
  • · Replies 5 ·
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5

How Does Rocket Ejection Rate Affect Its Acceleration?

  • sapsapz
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2

Magnetic Field with three parallel wires

  • rikinmathur
  • · Replies 2 ·
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2

Ratio of kinetic energy for objects at 5m/s and 25m/s

  • chris.hart
  • · Replies 10 ·
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10

Vertical Vibrations and Lissajous curve

  • Erbil
  • · Replies 14 ·
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14

What affects tangential acceleration and normal or c?

  • Lenjaku
  • · Replies 4 ·
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4

I don't get the acceleration relation in this ex

  • Lenjaku
  • · Replies 3 ·
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3

Velocities at B and C on a rotating rod

  • MrWarlock616
  • · Replies 12 ·
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12

Differential equation for freely swinging body

  • cmmcnamara
  • · Replies 1 ·
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1

Moment about z-axis for 3D shaft with perpendicular distances

  • wahaj
  • · Replies 4 ·
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4

Derivation of Instantaneous Velocity

  • 0x5B
  • · Replies 6 ·
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6

Magnetic flux through coil 2 due to current in coil 1

  • iDFLO
  • · Replies 2 ·
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2

Bernoulli's Principle with a Venturi Tube, find flow rate

  • heatherro92
  • · Replies 3 ·
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3

Proving a thermal conductivity/resistance formula.

  • thatguythere
  • · Replies 2 ·
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2

Solving Velocity Problem: 26°, 23m, 12m, 4.8s

  • Lordrunt
  • · Replies 4 ·
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4

Double-slit interference in ripple tank: finding second order minimum

  • smithisize
  • · Replies 5 ·
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5

Is 5 N/m² a Reasonable Young's Modulus for Wood?

  • lionely
  • · Replies 10 ·
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10
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4

Forces in the body homework problem

  • Shanghai Babe
  • · Replies 9 ·
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9

Calculating Boiler Capacity and Steam Properties

  • lindsey4
  • · Replies 3 ·
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3

Calculating the value of R for a resistor in an RLC series circuit

  • quellcrist
  • · Replies 4 ·
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4

Index of refraction from electromagnetic wave equation in liquid

  • bmb2009
  • · Replies 5 ·
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5

How to find emissivity of tungsten from ln graph?

  • dinospamoni
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3

Equation for translational equilibrium for horizontal components of force

  • Shanghai Babe
  • · Replies 1 ·
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1

Distance Earth moves when a 400g apple falls 5.00m

  • Coco12
  • · Replies 3 ·
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3

2d absolutely elastic vector collision

  • wolfblood
  • · Replies 17 ·
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17

What is the work done by a varying force on an object moving along the Y-axis?

  • dyinfrmphysic
  • · Replies 8 ·
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8

Normalization of wave function (Griffiths QM, 2.5)

  • Saraphim
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1

Steel cylinder on inclined workshop floor at 10 degrees

  • physicshawk
  • · Replies 3 ·
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3

Find the final speed of a skier if he lands 145m down a 20 degree slope?

  • woopycushion
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Determine the coefficient of kinetic friction

  • woopycushion
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2

How much force is exerted on the roof?

  • lindsey4
  • · Replies 2 ·
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2

What Amplitude Causes Slippage in a Two-Block Spring System?

  • Fizic
  • · Replies 1 ·
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1

Bug-windshield collision and impulse-momentum concepts

  • Mrclean214
  • · Replies 3 ·
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3

Carnot Refrigerator Efficiency and Energy Calculations | Homework Help

  • lindsey4
  • · Replies 2 ·
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2

Double-Slit Arrangement With Plastic Sheet

  • Ellipses
  • · Replies 4 ·
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4
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8

Finding weight of sign suspended by two strings at 40 degrees

  • amberacd123
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1

Two parallel mirrors are separated by a certain distance

  • november1992
  • · Replies 5 ·
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5

Period of a uniform metal disk oscillating as a physical pendulum

  • NasuSama
  • · Replies 8 ·
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8

Calculate Velocity from Cliff Jump: Horizontal and Vertical Distance

  • Lordrunt
  • · Replies 2 ·
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2

Two-Dimensional Perfectly Inelastic Collisions

  • scoop91
  • · Replies 1 ·
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1

How Do Different Acceleration Rates Affect Travel Time in Mine Shafts?

  • Merlan114
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Finding maximum slope of speed vs. time graph and comparing to gravity

  • urbano
  • · Replies 2 ·
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2

How do frequency and pressure affect sound in Kundt's Tube?

  • Fabio010
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1
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A String is Connected to a Vibrating Arm and Passes Over a Light Pulley

  • Kristenx2
  • · Replies 2 ·
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Problem with solving differential equation to solve for time

  • rico22
  • · Replies 8 ·
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8

Calculating Overall Power in Nd/YAG Laser

  • nachos1
  • · Replies 4 ·
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4

Rotational Dynamics - Energy, Torque

  • Stealth849
  • · Replies 20 ·
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20

Youngs Modulus and Centripetal Acceleration

  • zainy199
  • · Replies 16 ·
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16

Mean lifetime of pi(+) mesons - Special Relativity

  • lmstaples
  • · Replies 6 ·
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6

Pressure in mouth when sucking fluid up a straw 25 cm

  • johnhuntsman
  • · Replies 6 ·
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6

Tuning fork resonance in water tube at 528Hz

  • Kristenx2
  • · Replies 2 ·
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2

Understanding Potential Difference in a Cubic Circuit

  • V0ODO0CH1LD
  • · Replies 10 ·
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10

What Happens to the Cart During and After Throwing a Ball from a Cart?

  • hugs86
  • · Replies 2 ·
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2

What is the Capacitance of the Earth-Ionosphere System?

  • lmstaples
  • · Replies 1 ·
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1

Ten Kinematic Problems Grade 12 Physics

  • Steb
  • · Replies 4 ·
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4

Velocity released from a spring

  • PhizKid
  • · Replies 4 ·
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4
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4

Quick easy question block sliding down wedge

  • troytroy
  • · Replies 5 ·
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5

How Does Velocity Change in a Car Crash Impact?

  • johns123
  • · Replies 3 ·
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3

Why is the same force drawn twice in the FBD for member AC?

  • wahaj
  • · Replies 7 ·
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7
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4

How Do You Calculate the Trajectory of a Tennis Ball in Physics?

  • basedgod
  • · Replies 5 ·
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5

How do I find this? 60x10-6 = ?

  • Vancurt
  • · Replies 5 ·
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5

Can a Solar Sail Enable a Spacecraft to Escape the Solar System?

  • phyzz
  • · Replies 2 ·
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2

What Determines the Axes of an Elliptical Orbit?

  • Karol
  • · Replies 15 ·
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15

How Do You Convert mm of Head into Pascals for Aerodynamics Testing?

  • escobar147
  • · Replies 6 ·
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6

Prove that Operators are Hermitian

  • chris_avfc
  • · Replies 10 ·
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10

Photoelectric effect and electron deflection in magnetic field

  • skg94
  • · Replies 4 ·
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4

Radial Load, Axial Load and Toque Load in a car wheel

  • lomu123
  • · Replies 1 ·
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1

Force on rigid body: translation or rotational acceleration?

  • lordsurya08
  • · Replies 4 ·
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4

Find final rotational kinetic energy without knowing radius?

  • matxjos
  • · Replies 5 ·
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5

Finding g from a simple pendulum's period and length

  • Klymene15
  • · Replies 6 ·
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6

I need ideas about a case study report.

  • elishamei9000
  • · Replies 9 ·
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9

Toy car moving in a horizontal ring.

  • peripatein
  • · Replies 14 ·
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14

EM waves and blackbody radiation question

  • AlaskanPow
  • · Replies 1 ·
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1