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

Motion questions show me the steps

  • dagg3r
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2

Try it do you get the same answer?

  • aisha
  • · Replies 3 ·
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3

Simplify in sum and difference equation

  • aisha
  • · Replies 17 ·
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17

Check this for me involving sin theta

  • aisha
  • · Replies 3 ·
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3

Find initial speed of projectile fired from 150m cliff taking 10s to reach base

  • catalyst55
  • · Replies 19 ·
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19

Gravitational force at different altitudes above Earth

  • amandablackwood
  • · Replies 13 ·
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13

Electric Potential Difference and charges

  • chattkis3
  • · Replies 3 ·
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3

How Do You Calculate the Maximum Height of a Projectile Using Energy Concepts?

  • WingsofSelkhet
  • · Replies 3 ·
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3

Proving Trigonometric Identity Involving Double Angle Formula

  • aisha
  • · Replies 6 ·
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6

Estimate takeoff speed of aircraft

  • physicsss
  • · Replies 8 ·
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8

Understanding Specific Heat and Calorimetry: Experiment or Equation?

  • misskitty
  • · Replies 3 ·
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3

Momentum of Bullet and Angle of Impact: A Physics Lab

  • SnitchSeekaHarry
  • · Replies 2 ·
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2

Solving 2/3 k - (k + 1/4) = 1/12 (k + 4) but answer doesn't check

  • amandablackwood
  • · Replies 3 ·
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3

What is the minimum normal force he must exert?

  • physicsss
  • · Replies 2 ·
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2

Designing Shoes to Walk on Eggs: Ideas Welcome!

  • flipper2388
  • · Replies 4 ·
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4

Why The earth and the moon attract each other with a gravitational force

  • mark9159
  • · Replies 11 ·
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11

Solving an Entropy Problem: Finding the Temperature T in a Carnot Engine

  • Rachel C
  • · Replies 5 ·
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5

How Do You Set Up Equations for Electrical Circuit Problems?

  • tzeteng
  • · Replies 6 ·
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6
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2

Car generator output at different rotation speeds

  • airkapp
  • · Replies 4 ·
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4

Will planets eventually fall out of orbit due to gravity failing?

  • phy
  • · Replies 6 ·
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6

Questions on Magnetic Induction

  • metz143
  • · Replies 2 ·
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2

The Conservation of Mechanical Energy

  • zizikaboo
  • · Replies 2 ·
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2

Friction force on a 10 kg block on a 30-degree incline

  • FocusedWolf
  • · Replies 2 ·
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2

Airline overbooking with normal approximation and continuity correction

  • semidevil
  • · Replies 2 ·
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2

Why my trig equation solutions don't match the answer key

  • aisha
  • · Replies 9 ·
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9

Skateboarder work and gravitational potential energy change

  • kpangrace
  • · Replies 3 ·
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3

Find out weather differences in relative humidity

  • aisha
  • · Replies 3 ·
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3

Relationship between ppl and # of handshakes

  • aisha
  • · Replies 21 ·
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21

Which Model Better Values American Options: Binomial or Black Scholes?

  • courtrigrad
  • · Replies 7 ·
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7

What is the force on an electron moving in a magnetic field?

  • airkapp
  • · Replies 6 ·
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6

Investment Calculator: Calculating Total Profit~~

  • neik
  • · Replies 5 ·
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5

How to Design a Traffic Light with a DC Power Supply

  • Shahil
  • · Replies 3 ·
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3

Calculating Spring Stretch in a Horizontal Setup

  • whereisccguys
  • · Replies 3 ·
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3

Volume Integration: Calculate Rotated Region Bounded by y=9-X^2, X=2

  • Link
  • · Replies 3 ·
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3

Calculating Electric Field: Solving for a Moving Rod

  • whitetigerboy56
  • · Replies 3 ·
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3

Does Special Relativity Affect the Work Needed to Accelerate a Particle?

  • matpo39
  • · Replies 2 ·
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2

Window washer on scaffold torque equilibrium problem

  • misskitty
  • · Replies 2 ·
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2

What is the Weight of an Astronaut on a Shuttle 518917m Above Earth?

  • mohlam12
  • · Replies 10 ·
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10
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3

Two particles in a magnetic field

  • sony
  • · Replies 2 ·
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2

What Type of Circuit Is This?

  • tinhnho
  • · Replies 2 ·
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2

Thermal physics - partition function

  • jessawells
  • · Replies 2 ·
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2

How to Calculate Horizontal Projectile Motion on the Moon

  • mohlam12
  • · Replies 19 ·
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19

Non-mechanical timing device for 10–40 seconds without electricity

  • k_2_the_arma
  • · Replies 12 ·
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12

Is There a Tangent Plane on x^2-3y^2+2z=4 Parallel to 2x+y-z=4?

  • Romperstomper
  • · Replies 2 ·
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2

Electrostatics: Calculating Charge on Suspended Spheres

  • Neerolyte
  • · Replies 4 ·
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4

2 frequencies within an interference pattern

  • lektor
  • · Replies 4 ·
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4

Calculating Acceleration: Understanding Horizontal Forces on a 3kg Mass

  • RadiationX
  • · Replies 5 ·
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5

How Do You Find the Area Between Intersecting Graphs?

  • ProBasket
  • · Replies 4 ·
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4

Evaluating the integral of √(x−x²)

  • ToxicBug
  • · Replies 8 ·
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8

Finding the Speed of a Falling Brick on a Slope

  • sony
  • · Replies 10 ·
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10

Finding theoretical pressure and discharge coefficient in venturi tube

  • fcukniles
  • · Replies 21 ·
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21

Solve Excercise 9 in AP Calculus: Find DELTA for |f(x)-L| < E

  • Pseudo Statistic
  • · Replies 2 ·
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2

How do waves form and dissipate in water?

  • primarygun
  • · Replies 2 ·
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2

Calculating Torque of sphere resting on an inclined plane

  • candyshot
  • · Replies 3 ·
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3

Why does |x| equal -x when x approaches 0 from the left?

  • ktpr2
  • · Replies 20 ·
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20
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4
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6

How to extract sulfur from ground water

  • bigtoe
  • · Replies 3 ·
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3

What is the tension in the rope if The box is at rest?

  • mugzieee
  • · Replies 3 ·
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3

Solve the 2x Equation: 2^2x-12(2)^x+32=0

  • thomasrules
  • · Replies 3 ·
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3

How Accurate Are My Physics Problem Solutions?

  • woodworker101
  • · Replies 3 ·
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3

Ball hits vertical wall elastically: finding final velocity angle

  • RhysticGenesis
  • · Replies 5 ·
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5
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2

How Is Potential Difference Affected When a Loop Exits a Magnetic Field?

  • thursdaytbs
  • · Replies 2 ·
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2

Abstract Algebra - Centralizers

  • vsage
  • · Replies 2 ·
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2

Velocity of Lithium Atom Powered by 1mW Laser Beam

  • stunner5000pt
  • · Replies 11 ·
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11

Finding the End Behaviour Model for a Power Function?

  • ms. confused
  • · Replies 2 ·
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2
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9

Graphing f(x)=2^2+9/5x^2+2 with imaginary asymptotes

  • Rasine
  • · Replies 6 ·
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6

Statistical/thermal physics problem

  • Dracovich
  • · Replies 11 ·
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11

A hypothetical pressure question lifting a 10,000kg object

  • vaxopy
  • · Replies 2 ·
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2

What is the current through the wire?

  • thisisfudd
  • · Replies 6 ·
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6

One of those problems that looks simple but probably isn't

  • thisisfudd
  • · Replies 3 ·
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3

Solving 1+8x^{-1}+15x^{-2}=0

  • thomasrules
  • · Replies 8 ·
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8

Solving Capacitor Problem with 2 Capacitors

  • thisisfudd
  • · Replies 16 ·
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16
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2

Calculating Angular Acceleration in a Pivoted Rod

  • UrbanXrisis
  • · Replies 2 ·
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2

Determine half-life of this substance

  • thomasrules
  • · Replies 5 ·
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5

Capacitors charging capacitors

  • biigturkey
  • · Replies 9 ·
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9

FBD and what forces should I include?

  • hahaha
  • · Replies 6 ·
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6
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4

Why Is the Electric Field Inside a Solid Metal Sphere Zero?

  • thisisfudd
  • · Replies 2 ·
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2

Moment of inertia of an irregularly shaped object

  • UrbanXrisis
  • · Replies 3 ·
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3

Does the Summation of a Number Equal Its Square Root?

  • whatzzupboy
  • · Replies 17 ·
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17

Thermal/mechanical properties of matter

  • fasterthanjoao
  • · Replies 4 ·
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4

How do I convert 20 mm of gas to pascals?

  • fcukniles
  • · Replies 2 ·
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2

What Happens to a CRO Screen When Switching Between AC, GND, and DC Modes?

  • adrienne
  • · Replies 3 ·
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3

Centrip Force and Coef. of Friction

  • Dunience
  • · Replies 2 ·
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2

Kinematics - Finding velocity of a baseball

  • kidia
  • · Replies 2 ·
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2

Calculating Power and Energy Consumption in Electrical Circuits

  • hackeract
  • · Replies 5 ·
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5

Show that 2/log₉ A - 1/log₃ A = 3/log₃ A

  • thomasrules
  • · Replies 12 ·
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12

How Do I Determine the Thermal Conductivity of Glass from My Graph?

  • chickens
  • · Replies 3 ·
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3

Integrating 1/cos²(2y)

  • andrew410
  • · Replies 2 ·
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2

Efflux problem is my work valid?

  • cepheid
  • · Replies 2 ·
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2

Solving for x in (x + 1×10⁻⁸)(x) = 1.0×10⁻¹⁴

  • stressedout
  • · Replies 3 ·
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3

Lissajous figure and oscilloscopes problem

  • figs
  • · Replies 4 ·
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4

Finding the mass of the moon from density and diameter

  • R.J.
  • · Replies 4 ·
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4