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

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

  • SAT2400
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Calculating Net Torque for Disk in Diagram D

  • nahanksh
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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
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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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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

Flow Rate Ratio of Two Tubes: Calculation

  • Ekh
  • · Replies 2 ·
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2

What direction should the electric field point in a velocity selector?

  • cdymdcool
  • · Replies 3 ·
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3

How Does a Star's Diameter Change with Its Rotation Period?

  • nnokwoodeye
  • · Replies 1 ·
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1

Average acceleration of the Moon from velocity vector

  • planke
  • · Replies 1 ·
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1

What Supplies Do I Need for My Electromagnet Science Project?

  • Alieneater
  • · Replies 1 ·
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1

Electric Potential problem, 4 equal charges, different signs, weird shape.

  • BATBLady
  • · Replies 1 ·
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1

How to determine the potential difference?

  • cdymdcool
  • · Replies 1 ·
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1

Manipulating inverse square graph into straight line graph

  • sync303
  • · Replies 4 ·
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4

Find the voltage at point X on the circuit

  • mathman44
  • · Replies 2 ·
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2

How Does a Star's Diameter Change with Rotation Period?

  • nnokwoodeye
  • · Replies 4 ·
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4

Maximum Power Dissipation at Internal Resistance Proof

  • ATOMatt
  • · Replies 4 ·
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4

How Many Photons Reach the Retina?

  • kingwinner
  • · Replies 7 ·
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7