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

What is the acceleration of the speaker cone with these specifications?

  • Mathysics
  • · Replies 1 ·
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1

Electric field outside of conducting sphere.

  • ramses07
  • · Replies 3 ·
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3

Gravitational force quick doubt

  • rbnphlp
  • · Replies 6 ·
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6
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3

Calculating Energy Requirements for Phase Changes in Water

  • urgent
  • · Replies 1 ·
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1

How fast would a 163 Hz wave travel

  • traveler7
  • · Replies 7 ·
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7

Question on car speed and distance.

  • wolfgangjt
  • · Replies 1 ·
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1

Finding acceleration of two blocks with pulleys

  • mnafetsc
  • · Replies 1 ·
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1

Object pulled up an incline with friction

  • Jkblackbear08
  • · Replies 1 ·
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1

Solving Friction Problems: 500N Box on a Non-Frictionless Floor

  • Jkblackbear08
  • · Replies 1 ·
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1

With respect to what does a spinning object maintain its orientation?

  • tmst08
  • · Replies 16 ·
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16

Why Can Mechanical Waves Propagate Through a Medium?

  • eureka_beyond
  • · Replies 3 ·
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3

Calculating Impulse of a Ball Dropped from Rest

  • mickellowery
  • · Replies 5 ·
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5

Calculating Momentum Change in Elastic Collisions

  • superaznnerd
  • · Replies 13 ·
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13

How Far Will the Spring Be Compressed?

  • pleasehelpme6
  • · Replies 9 ·
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9

Magnetism Q: Speed of Loop in Magnetic Field

  • superaznnerd
  • · Replies 2 ·
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2

Circuit with 2 resistors, inductor, and capacitor

  • Vapen
  • · Replies 12 ·
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12

Finding Final Velocity in a Spring Loaded Collision

  • pleasehelpme6
  • · Replies 2 ·
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2

Angular acceleration of a bar on a hinge

  • mickellowery
  • · Replies 1 ·
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1

Check of my answers for projectile motion please

  • ghostbuster25
  • · Replies 2 ·
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2
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7

Need Help on Time Dilation and Relativity

  • Mange
  • · Replies 1 ·
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1

Need Help w/ Some Rotational Physics

  • r34racer01
  • · Replies 3 ·
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3

Intial speed of projectile motion from height

  • ghostbuster25
  • · Replies 2 ·
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2

Instananeous accerlerations on a velocity vs time graph

  • mandy9008
  • · Replies 6 ·
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6

Projectile Motion Firing Question

  • iurod
  • · Replies 1 ·
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1

Projectile Motion Angles Question

  • iurod
  • · Replies 8 ·
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8

Pivoting Stick (Rotational Dynamics)

  • santi_h87
  • · Replies 2 ·
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2

Work Done by Braking Force to Stop a 1240 kg Car at 86.0 km/hr

  • brittany_g18
  • · Replies 2 ·
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2

Equilateral triangle coulombs law problem

  • physicskid72
  • · Replies 5 ·
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5
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3

Electrostatic physics: can someone check my answers?

  • Roro312
  • · Replies 1 ·
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1

Beta -decay converting u to MeV

  • MrsChaos
  • · Replies 2 ·
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2

Maxwell and his equations essay - should i include aether theory heavily?

  • roberto85
  • · Replies 2 ·
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2

Fundamental Cutsets Explained: Get Guided with Examples

  • noobie!
  • · Replies 1 ·
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1

Cart-Cart Collision, Conservation of Momentum

  • pleasehelpme6
  • · Replies 3 ·
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3

Work done on capacitors and more

  • Tntgsh
  • · Replies 2 ·
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2

Need help with a projectile up an incline problem

  • daniel1919
  • · Replies 4 ·
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4

Finding Electron Speed and Wavelength

  • purecp
  • · Replies 2 ·
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2

What is the Acceleration of an Object Pushed by Hand Pressure?

  • Zirok
  • · Replies 2 ·
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2

Equilibrium Problem: Solve & Find mu(min)=1

  • inky
  • · Replies 2 ·
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2

1-D coulomb repelling of 3 charges

  • cracking
  • · Replies 8 ·
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8

Calculating Velocity of Ball at Impact with Ground

  • Trandall
  • · Replies 5 ·
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5

Energy problem with inelastic collision

  • mickellowery
  • · Replies 1 ·
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1

Work Done Dragging 50kg Crate 8m: Find Force, Angle & Energy

  • lynchdemartin
  • · Replies 8 ·
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8

What is the orbital speed of a satellite in geostationary orbit?

  • Oliviam12
  • · Replies 6 ·
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6

Query regarding electrostatics

  • KKtm
  • · Replies 7 ·
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7

Embarassing question- Displacement equation

  • literacola
  • · Replies 10 ·
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10

Units for wave vector and other?

  • Readinglevel^
  • · Replies 2 ·
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2

Can I Convert PSI to kPa Using Dimensional Analysis?

  • JoeMaxwell92
  • · Replies 3 ·
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3

Isobaric Process: Fill in ΔP for Homework Equation

  • traveler7
  • · Replies 5 ·
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5

First timer at physics needs help

  • natpac82
  • · Replies 3 ·
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3

How Does Charge -Q Exhibit Simple Harmonic Motion?

  • erok81
  • · Replies 15 ·
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15

Conducting rod through a magnetic field

  • thereddevils
  • · Replies 1 ·
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1

Projectile motion without time and initial velocity

  • bur7ama1989
  • · Replies 16 ·
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16

Ohm's Law and the Principles of DC Circuits

  • tigerwoods99
  • · Replies 8 ·
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8

Wind load - is it a FORCE or PRESSURE?

  • joeykeys
  • · Replies 5 ·
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5

One Dimension Kinematics Question

  • iurod
  • · Replies 6 ·
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6

Verifying Torque and Motion Problem Solution

  • Hockeystar
  • · Replies 6 ·
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6
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17

What is the Average Force Exerted by the Wall on a Bouncing Ball?

  • roam
  • · Replies 2 ·
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2

The Collision of Two Differently-Massed Balls

  • Physicsy
  • · Replies 8 ·
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8

Weight of man in a lift when lift is ascending/descending.

  • equilibrum
  • · Replies 4 ·
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4

of which i thought was an ellastic collision problem

  • rottenapple
  • · Replies 3 ·
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3

Spring Constant Question: Need Help

  • Paymemoney
  • · Replies 16 ·
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16

RLC AC circuit can't get right answer

  • AdamP
  • · Replies 5 ·
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5

How Can You Predict Sound Amplification in a Conical Volume?

  • the_dialogue
  • · Replies 1 ·
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1

DC Electromagnetic Motor-small question

  • moshrom
  • · Replies 2 ·
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2

Bouncing Ball Problem, velocity vs. time

  • kingneb
  • · Replies 7 ·
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7
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5

Ballistics pendulum - sort of - COM

  • pat666
  • · Replies 2 ·
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2

Need to calculate work from mass and two velocities

  • kylepetten
  • · Replies 2 ·
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2

Ramp angle and landing velocity

  • clockworks204
  • · Replies 4 ·
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4

How Does Adding Weight Affect the Oscillation of a Board on Rollers?

  • Maneuver1
  • · Replies 11 ·
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11

Balancing a mass using a balance beam

  • louza8
  • · Replies 6 ·
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6

Leaping Off the 400-Year-Old Bridge in Bosnia

  • mandy9008
  • · Replies 3 ·
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3

Dynamics Question (Kinetics& energy)

  • gomerpyle
  • · Replies 1 ·
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1

What are examples of physics in Apollo 13 and October Sky?

  • littleavis
  • · Replies 1 ·
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1

Solve Coulomb's Law 1D: Find q3 for Zero Force

  • Mitchtwitchita
  • · Replies 9 ·
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9

Rpm related to velocity and diameter

  • cgaday
  • · Replies 3 ·
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3

Charge Distribution on Metallic Plates

  • surajkaul
  • · Replies 3 ·
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3

Calculating a Ball's Height on Its Way to 1st Base

  • clockworks204
  • · Replies 6 ·
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6

Help Needed: Self-Studying for A Level Mechanics 2 Exam

  • slakedlime
  • · Replies 9 ·
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9

Atwood machine bounce, how high?

  • Uku
  • · Replies 4 ·
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4

Is the 10N Force on the Bike Wheel Causing It to Move Backwards?

  • nazz
  • · Replies 1 ·
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1

Find the buoyant force on the iceberg

  • ombudsmansect
  • · Replies 3 ·
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3
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1

Speed of Raindrops Relative to Ground: 31.93 m/s

  • roam
  • · Replies 5 ·
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5

Sound wave no idea how to do it

  • pat666
  • · Replies 7 ·
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7

Average Velocity on a Position vs Time Graph

  • mandy9008
  • · Replies 2 ·
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2

Recoiling Cannon Projectile Velocity

  • pleasehelpme6
  • · Replies 1 ·
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1

Capacitor,dielectric and force on plates

  • bharath423
  • · Replies 6 ·
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6

Electric Potential Difference Between Two Charges

  • Mirole
  • · Replies 6 ·
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6

Exam based on Mastering Physics anyone?

  • louza8
  • · Replies 2 ·
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2

How Does Releasing Coal Affect the Speed and Dynamics of a Railroad Car?

  • pleasehelpme6
  • · Replies 9 ·
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9
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5

What Is the Direction of Two Colliding Cars Stuck Together?

  • friedpork
  • · Replies 3 ·
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3
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14

What is the Force Required to Move a Block up an Inclined Plane?

  • Agent M27
  • · Replies 6 ·
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6
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1