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 Finesse Influence the Performance of a Fabry-Perot Interferometer?

  • ayesha203
  • · Replies 3 ·
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3

Finding the angle beta for vector <60,-50,40>

  • xtrubambinoxpr
  • · Replies 7 ·
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7

Calculating Change in Electric Potential Energy

  • baker265
  • · Replies 9 ·
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9

Can a converging lens become a diverging lens in liquid?

  • haha1234
  • · Replies 3 ·
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3

How Do You Calculate Car Speed When Dodging a Water Balloon?

  • jim_ringo
  • · Replies 9 ·
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9

Charge and energy stored in a 14V, 113pF capacitor

  • baker265
  • · Replies 1 ·
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1
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1

Projectile Motion fired from a cannon

  • ItsImpulse
  • · Replies 19 ·
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19

Electrostatics: Finding Equilibrium with Three Charges

  • PsychonautQQ
  • · Replies 5 ·
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5

Line Charge and Charged Cylindrical Shell (Gauss law)

  • Sneakatone
  • · Replies 4 ·
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4

Sketch the graph of the wave-function.

  • stefan10
  • · Replies 1 ·
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1

Solve for Focal Length of Convex Mirror: 1/50 + 1/20 = 1/-f

  • Aoiumi
  • · Replies 2 ·
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2

The Electric field between two charges

  • K.QMUL
  • · Replies 5 ·
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5

My Physics Teacher is Obsessed with Elevators

  • Medgirl314
  • · Replies 16 ·
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16

Calculating the Distance of a Sonar Echo

  • rootdawg56
  • · Replies 4 ·
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4

Centripetal acceleration for a 12000 rpm centrifuge

  • Kieran12
  • · Replies 4 ·
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4

Spring, weight and potential energy

  • Bromio
  • · Replies 8 ·
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8

Beam of particles shot through slits

  • Queequeg
  • · Replies 12 ·
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12

When carring the nonpolar compound

  • pietro18
  • · Replies 3 ·
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3

Does an object make tons of micro movements while moving?

  • Bonaparte
  • · Replies 7 ·
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7

Force exerted by one disc on the other in a capacitor?

  • mot
  • · Replies 4 ·
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4

What Angle Should a Basketball Player Aim to Score from 15 Feet Away?

  • negation
  • · Replies 20 ·
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20

What is the Young's modulus of a nylon rope used for climbing?

  • pietro18
  • · Replies 2 ·
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2

What is the Maximum Height and Time of a Rocket's Flight?

  • Garrett21
  • · Replies 5 ·
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5

Engineering Statics (Vector Questions)

  • xtrubambinoxpr
  • · Replies 7 ·
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7

Find work of an object at constant velocity

  • lindsaybn10
  • · Replies 1 ·
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1

Reaction time of dollar falling between fingers

  • alexs2jennisha
  • · Replies 1 ·
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1

Projectile Motion with a Moving Observer

  • ichivictus
  • · Replies 6 ·
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6

Find the Electric field due to two curved rods

  • LeFerret
  • · Replies 1 ·
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1
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2

Elevator going up with constant velocity but changing acceleration

  • alexs2jennisha
  • · Replies 1 ·
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1

Difficult problem on Angular Kinetics

  • Strontium90
  • · Replies 6 ·
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6

Finding charge from current and time in household appliance

  • jimmyboykun
  • · Replies 2 ·
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2

Acceleration of the particle at t = 1s

  • patelneel1994
  • · Replies 5 ·
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5

Finding the Angular Inertia of a Pulley/Block system.

  • GodPlaysDice
  • · Replies 2 ·
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2

Height of Peak in M-Slit Experiments

  • baubletop
  • · Replies 4 ·
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4

Average velocity in two dimension with given functions?

  • JessicaJ283782
  • · Replies 2 ·
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2
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2

Finding coefficient of kinetic friction for sliding crate of bananas

  • Medgirl314
  • · Replies 2 ·
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2

USAPhO 2011 F=ma exam #12, (gravitational force, 3 body)

  • Agrasin
  • · Replies 7 ·
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7

Mass subject to a time varying force, find acceleration/speed.

  • ichivictus
  • · Replies 1 ·
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1
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3

Yes, 86.2 N sounds like a more accurate answer. Great job on your solution!

  • Medgirl314
  • · Replies 2 ·
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2

How Do I Calculate Sliding Distance with Unknown Mass?

  • djalle12
  • · Replies 24 ·
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24

Determining Acceleration of Object on x-Axis

  • patelneel1994
  • · Replies 5 ·
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5

My Physics Teacher Must Really Hate Pianos

  • Medgirl314
  • · Replies 4 ·
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4

Stone is thrown from the top of the building.

  • patelneel1994
  • · Replies 3 ·
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3

Thermal conductivity between sheets of two different metals

  • castrodisastro
  • · Replies 22 ·
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22

Deriving Ideal Gas Law through partition function

  • Mangoes
  • · Replies 8 ·
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8

Finding the number of microstates

  • Dassinia
  • · Replies 10 ·
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10

Derivation of Lorentz Transformation for Acceleration

  • MostlyHarmless
  • · Replies 1 ·
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1

1 dimensional heat transfer question

  • theBEAST
  • · Replies 5 ·
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5

Can Heat Engines Be Built? An Exploration

  • Cwhitlatch32
  • · Replies 6 ·
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6

What Altitude Should a Geosynchronous Satellite Orbit Mars?

  • yiyi
  • · Replies 2 ·
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2

Understanding Tension in a Block and Tackle System

  • caa4444
  • · Replies 2 ·
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2

Where are the Nodes Located in a Circuit?

  • princejan7
  • · Replies 1 ·
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1

Projected component of F along a line in cartesian question.

  • 7Lions
  • · Replies 13 ·
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13

Finding the angle of the total acceleration of a point?

  • JessicaJ283782
  • · Replies 1 ·
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1

Calculating Collision Time for Two Objects with Different Initial Velocities

  • Speedking96
  • · Replies 2 ·
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2

Maximum upward acceleration of a piano lifted by cable

  • Medgirl314
  • · Replies 11 ·
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11

Electric Field and Dipole Moment from Line Charges?

  • NATURE.M
  • · Replies 19 ·
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19

2011 Physics Olympiad Problem 25

  • Thundagere
  • · Replies 7 ·
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7

Drag Force Equation: Sphere vs 1/2pv^2C_dA

  • xphysics
  • · Replies 5 ·
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5

Change in Vrms, given initial P and V, find energy added.

  • MattRob
  • · Replies 1 ·
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1

Average shear stress in going between a spliced rod?

  • kal854
  • · Replies 3 ·
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3

How to solve multiple choice questions?

  • meisterluv
  • · Replies 4 ·
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4

Finding Magnetic Flux Through a Wire Frame

  • VishalChauhan
  • · Replies 25 ·
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25

Maximum height of a projectile thrown from a rooftop

  • s.dyseman
  • · Replies 2 ·
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2

Work done at constant velocity with no acceleration

  • JudyyNunez
  • · Replies 3 ·
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3

What potential difference is required to bring the proton to rest?

  • Jbreezy
  • · Replies 9 ·
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9

Finding resultant electric field

  • cwbullivant
  • · Replies 5 ·
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5

Show that the horizontal range is 4h/tan(theta)

  • negation
  • · Replies 10 ·
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10

Why is torque zero for Earth's orbit around the sun?

  • BOAS
  • · Replies 4 ·
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4

USAPhO 2008 F=ma exam #18, (gravitational potential)

  • Agrasin
  • · Replies 15 ·
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15

Deriving the Cyclic Rule in Thermodynamics

  • Nikitin
  • · Replies 14 ·
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14

How to calculate R thevenin (Circuits)

  • Miike012
  • · Replies 2 ·
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2

How many external forces act on each dipole and why?

  • Lee33
  • · Replies 5 ·
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5
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8

How do you find acceleration without knowing the tension?

  • tdreceiver17
  • · Replies 2 ·
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2

Given time, distance and weight, how do I calculate work?

  • fixedglare
  • · Replies 9 ·
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9

Horizontal range of 2 different angles

  • negation
  • · Replies 10 ·
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10

How far apart are the stop signs?

  • Abdul.119
  • · Replies 3 ·
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3

Statics. Equilibrium With Springs and Tension Question.

  • Dieinhell100
  • · Replies 9 ·
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9

Two blocks stacked centripetal motion

  • thatoneguy6531
  • · Replies 6 ·
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6

Constant Acceleration; answer not correct for some reason?

  • dudenamedscott
  • · Replies 2 ·
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2

Significant Figures when Converting from DMS to Decimal Degrees

  • deedsy
  • · Replies 5 ·
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5

Where did the water balloon fall?

  • Medgirl314
  • · Replies 11 ·
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11

The force between charged parallel disks, when distance isn't given?

  • Allenlbq
  • · Replies 1 ·
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1

Interesting harmonic motion lab

  • rhino1000
  • · Replies 18 ·
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18

Find angle with pith ball and vertical wall

  • britt
  • · Replies 4 ·
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4

Parallel Plate Capacitor Diameter

  • tomizzo
  • · Replies 2 ·
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2

How Long Does an Arrow Fly When Fired from a Cliff?

  • Medgirl314
  • · Replies 14 ·
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14

Physics 11 Final exams Practice

  • ovechkin1313
  • · Replies 2 ·
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2

Why does the electric field from a charged sheet have factor z/(z²+r²)^½?

  • MathewsMD
  • · Replies 3 ·
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3

Plot Vout for RC circuit with step input

  • oddjobmj
  • · Replies 7 ·
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7

Ratio of flight times at angles 45degree +/- alpha

  • negation
  • · Replies 22 ·
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22

A dust particle through an electric field

  • baker265
  • · Replies 3 ·
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3

Electric field of a spherical metal shell

  • baker265
  • · Replies 2 ·
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2

F=ma 2011 #24: Effects of Increasing Bearing Width & Radius

  • licantroleon
  • · Replies 3 ·
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3

Just a simple thought experiment

  • Fifty
  • · Replies 6 ·
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6