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

2 blocks, each on an inclined plane

  • RonakPat
  • · Replies 5 ·
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5

Thermodynamics: Isothermal Compressibility and Expansivity Equations

  • mmmboh
  • · Replies 2 ·
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2

Resistor Calculation for Alarm Clock Circuit

  • Masafi
  • · Replies 3 ·
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3

Physics Homework: Calculate Velocity & Direction of Beer Mug

  • justsomebody
  • · Replies 6 ·
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6

How do I resolve forces in this problem?

  • physicsfun_12
  • · Replies 2 ·
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2

Temperature change in a nail it's a tricky one.

  • Dmitri10
  • · Replies 2 ·
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2

Linear expansion: Can someone check my work?

  • Dmitri10
  • · Replies 3 ·
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3

Faraday's Induction and capacitance circuits

  • t.wade
  • · Replies 18 ·
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18

Speed of Electron Released from Rest in Weak Electric Field

  • swimmer052005
  • · Replies 1 ·
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1

Automobile Hydrostatic Pressure

  • SAT2400
  • · Replies 1 ·
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1

How Does Pascal's Principle Apply to Hydraulic Systems?

  • SAT2400
  • · Replies 1 ·
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1

Point charge - magnitude calculations

  • swimmer052005
  • · Replies 1 ·
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1

How Does Water Pressure Relate to Tank Height and Pipe Elevation?

  • SAT2400
  • · Replies 1 ·
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1

Calculating Net Torque for Disk in Diagram D

  • nahanksh
  • · Replies 1 ·
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1
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2

Rotational Kinematics (Rolling and sliding)

  • nahanksh
  • · Replies 1 ·
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1

Relative Velocity Airplane Problem - Air and Ground speed

  • Rock32
  • · Replies 1 ·
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1
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1

Maximum velocity of charged particles

  • Knfoster
  • · Replies 1 ·
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1

Microwave heating water from 10°C to 55°C with efficiency calculation

  • madeeeeee
  • · Replies 1 ·
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1
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4

Solving Projectile Motion Confusion: Time and Distance Calculations

  • tomsdubs
  • · Replies 5 ·
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5

Energy and Power problem (change in tempurature)

  • madeeeeee
  • · Replies 2 ·
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2

Equilibrium question with attached diagram

  • pinnacleprouk
  • · Replies 3 ·
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3

What is the Efficiency of a Carnot Air Conditioner?

  • azure kitsune
  • · Replies 4 ·
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4

Position as a function of time for SHM starting at maximum displacement

  • lilmul123
  • · Replies 2 ·
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2

Charge and excess electrons in a rod

  • nothingatall
  • · Replies 2 ·
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2

Elementary Boltzmann Statistics

  • Phyisab****
  • · Replies 6 ·
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6

How Do You Calculate Currents in a Bridge Circuit?

  • Peto
  • · Replies 1 ·
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1

Finding the End Point of a Transformed Vector

  • magnifik
  • · Replies 2 ·
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2

Circular motion, center of gravity and rotational motion worksheet

  • shadow3352
  • · Replies 1 ·
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1

Man throws ball through hoop from moving flatcar

  • Wishingwell
  • · Replies 3 ·
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3

Speed and acceleration when x = 2.3 m in SHM

  • lilmul123
  • · Replies 2 ·
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2

How many molecules in 1.00g of water and atoms in 1.00g of ice?

  • SAT2400
  • · Replies 6 ·
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6

Finding the Charge for Circular Motion in an Electric Field

  • nothingatall
  • · Replies 5 ·
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5

Someone me specific heat capacity?

  • Dmitri10
  • · Replies 7 ·
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7

How Does Immersion in a Liquid Affect Diffraction Fringe Spacing?

  • jasper10
  • · Replies 8 ·
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8

Physics of Block of Wood Pushed Across Floor: Will it Stop?

  • maccha
  • · Replies 2 ·
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2
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7

Momentum question involving vectors

  • jumpyroo92
  • · Replies 1 ·
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1

Conceptual Problem (Integration)

  • anonymousphys
  • · Replies 2 ·
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2

FTIR Machine: Interference of Blackbody Radiation Source

  • physical101
  • · Replies 1 ·
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1

Calculating the net electric flux

  • anonymousphys
  • · Replies 1 ·
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1

Index of refraction and oil/water

  • jaded18
  • · Replies 12 ·
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12

Unravelling Electric Flux: Area Vector and E-Field Vector

  • anonymousphys
  • · Replies 1 ·
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1

Work done pulling a 40kg stone up a 30° incline to 100m height

  • lemon
  • · Replies 17 ·
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17

Calculating Charge on Drop with Excess Electrons

  • Masafi
  • · Replies 1 ·
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1

Calculate Change in Momentum of 65kg Runner After Half Revolution

  • Masafi
  • · Replies 1 ·
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1

Dirac delta integral with function argument

  • E92M3
  • · Replies 9 ·
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9

Vertical Motion w/ constant acceleration

  • cdlegendary
  • · Replies 2 ·
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2

Building a vehicle to transport a D cell battery 7m with 2kg falling 80cm

  • michellex
  • · Replies 1 ·
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1

Medical Physics: Calculating Traction, Tension and Reaction Force

  • tamimi23
  • · Replies 1 ·
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1

Flatcar Hoop Problem: Find Ball's Initial Velocity

  • magnifik
  • · Replies 3 ·
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3
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6

How far can a 100kg man walk on a 10m overhanging steel girder?

  • M_G
  • · Replies 9 ·
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9

Total momentum after collision physics

  • lemon
  • · Replies 6 ·
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6

What is the minimum angle for a ladder to not slip against a frictionless wall?

  • tigerwoods99
  • · Replies 6 ·
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6

Some questions on magnetic fields in matter

  • springo
  • · Replies 1 ·
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1

Finding end temperature of mixed substances

  • dthmnstr
  • · Replies 3 ·
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3

Calculating decay rate of potassium-40 using half-life and initial mass

  • immuno
  • · Replies 3 ·
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3

Second order ODEs- P.Integral for e^xsinx

  • Smith987
  • · Replies 3 ·
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3

Energy considerations in strings

  • aim1732
  • · Replies 3 ·
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3

Hydrostatics - Which point has higher pressure?

  • IBY
  • · Replies 4 ·
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4

Egg Drop Design Using Only Paper

  • Silver Rose
  • · Replies 5 ·
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5

Ly on gravitation only one part

  • squintyeyes
  • · Replies 5 ·
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5

Vaporization and change in internal energy

  • songoku
  • · Replies 6 ·
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6

How do I make a compensation vector?

  • yamugushi
  • · Replies 1 ·
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1

Calculate the actual depth of the trout

  • Shaley
  • · Replies 4 ·
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4

Finding An Initial Speed, Intro to Physics Question

  • STEF2098
  • · Replies 1 ·
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1

Simple Harmonic Motion-Solving for Spring Constant

  • Wellesley
  • · Replies 8 ·
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8

Brewster angle for light entering crown glass from ethanol

  • Shaley
  • · Replies 1 ·
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1

What is the angle of the slope in Q2?

  • lemon
  • · Replies 7 ·
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7

Do the Balls Cross Paths at 1/2h, Above 1/2h, or Below 1/2h?

  • kbaumen
  • · Replies 2 ·
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2

How Much Must You Stretch a Guitar String to Obtain a Tension of 10 N?

  • kavamo
  • · Replies 3 ·
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3
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2

How can the volume of water needed to melt an iceberg be determined?

  • dilasluis
  • · Replies 2 ·
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2

Finding the radius of a charged metal sphere

  • Jimmy25
  • · Replies 1 ·
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1

Finding moles of monatomic gas from heat capacity at constant volume

  • TheTourist
  • · Replies 1 ·
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1

Force due to a uniformly charged ring

  • Jimmy25
  • · Replies 7 ·
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7

How to Calculate the Max Launch Speed of a Catapult Using Elastic Bands?

  • Final Thought
  • · Replies 2 ·
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2

Find Resistance Between A and B

  • mmmboh
  • · Replies 10 ·
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10
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9

Which is True in an Expanded Aneurysm: 1-6?

  • Ekh
  • · Replies 3 ·
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3
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2

Volume Change with Temperature Increase at Constant Pressure?

  • heraclius
  • · Replies 6 ·
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6

Direction of rolling resistance

  • R Power
  • · Replies 1 ·
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1

Electrostatic potential of unit charge in vacuum

  • dingo_d
  • · Replies 2 ·
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2

Acceleration of plank and sphere on smooth floor with constant force

  • sachin123
  • · Replies 3 ·
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3

Finding the Coplanar Value of n for Given Vectors

  • jarman007
  • · Replies 4 ·
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4
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2

Solve Archimedes Principle: 800kg Load on 5x2m Barge in Fresh Water

  • jaisan72980
  • · Replies 1 ·
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1

Find Optimal Distance from Wall for Max Angle of Vision

  • gangsterme
  • · Replies 1 ·
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1

How Do Temperature Changes Affect Stress in Steel and Aluminum Rods?

  • Fizzicist
  • · Replies 10 ·
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10

How Far and How Long Will a 20kg Object Travel Under Friction?

  • BearMtn61
  • · Replies 2 ·
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2

How Does Battery Size Affect Charge Transfer in a Flashlight?

  • majormuss
  • · Replies 2 ·
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2

Motion in Fields (two parallel plates when voltage is applied)

  • jasper10
  • · Replies 8 ·
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8

How does temperature affect the height of a liquid column in a glass tube?

  • plfarrell
  • · Replies 3 ·
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3

Calculating the mass in a solenoid system

  • mmoadi
  • · Replies 1 ·
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1

A Coordinates and Interval Question

  • jenn047
  • · Replies 8 ·
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8