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

I can solve that the problem about motion in one dimention

  • bl4cksta
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5

Can't the trick (finding final temperature)

  • nabilsaleh
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1

Solving for velocity from kinetic energy and rest energy

  • chris_0101
  • · Replies 2 ·
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2

Specific Heat Capacity of solids liquid or Gas, which is largest?

  • matthew77ask
  • · Replies 7 ·
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7

Solving Force of 17g Bullet Accelerated in Rifle Barrel

  • xlogit3k
  • · Replies 5 ·
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5

How to Find the Final Speed of an Experimental Train?

  • xlogit3k
  • · Replies 3 ·
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3

Work and power in two kinematics problems

  • McKeavey
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1

Net force from two cables pulling an airplane at angles

  • homevolend
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3

How long is an object in the air?

  • soicuw
  • · Replies 1 ·
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1

Rms current in circuit with capacitor resistor and rms output

  • a_ferret
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5

When will two balls be at the same height during 1-dimensional motion?

  • ksinelli
  • · Replies 1 ·
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1

Meter Stick Special Relativity Problem

  • harrietstowe
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1
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5

How can I calculate the speed of two hockey players after a collision?

  • BraedenP
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2

Special Relativity and Airplane Problem

  • harrietstowe
  • · Replies 9 ·
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9

Rod with current and magnetic field

  • gsquare567
  • · Replies 5 ·
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5

Torque about the origin vs torque about another point

  • VitaX
  • · Replies 1 ·
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1

Earth's recoil velocity when you jump up and momentum conservation

  • runningirl
  • · Replies 7 ·
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7

Is Dark Matter a Viable Topic for a Senior Project?

  • tasveerk
  • · Replies 1 ·
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1

2 vibrating strings and harmonics questions

  • pugtm
  • · Replies 2 ·
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2

Calculating Velocity of Boater in Relation to Shore

  • homevolend
  • · Replies 2 ·
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2

Velocity and distance ratio problem

  • JyN
  • · Replies 1 ·
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1

Center of mass x-coordinate of a metal plate

  • cubejunkies
  • · Replies 4 ·
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4

Solve Rocket Propulsion Problem: a = ((Vr)(k))/(1-(kt))-g

  • mopar969
  • · Replies 1 ·
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1

Doppler shift question (galaxy movement)

  • psych2012
  • · Replies 1 ·
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1

Minimum thickness of nonreflecting film on glass lens for 500 nm light

  • titan81
  • · Replies 3 ·
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3

Calculating Horizontal Forces in a Tug-of-War Using Newton's Third Law

  • RepoMan
  • · Replies 1 ·
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1

Pulley System equilibrium problem

  • Dcarroll
  • · Replies 5 ·
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5

Kinetic Energy Related to Potential

  • Noms
  • · Replies 3 ·
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3

Motion of 3 Bodies Dynamics - Acclerations

  • al_9591
  • · Replies 5 ·
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5

Young's Double Slit Experiment (Diffraction)

  • jones268
  • · Replies 1 ·
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1

Thermodynamics: Gibs free energy

  • ortegavs
  • · Replies 1 ·
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1

Understanding Muonium Energy Levels and Relativistic Velocities

  • physgirl
  • · Replies 5 ·
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5

Blocks on a Pulley: Friction & Acceleration

  • jti3066
  • · Replies 12 ·
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12

Inertia and Torque given Angular Velocity

  • Lucidity
  • · Replies 2 ·
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2

Deriving Velocity and Acceleration from a Distance Vector in the x-y Plane

  • mystmyst
  • · Replies 7 ·
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7
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5

How far does an electron drift in a copper wire carrying 140 A?

  • megr_ftw
  • · Replies 2 ·
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2
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6
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3

How to Calculate the Alpha Particle's Velocity After Collision?

  • cheater1
  • · Replies 6 ·
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6

Electric flux through a hemisphere with uniform field

  • xaer04
  • · Replies 9 ·
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9

Angular Momentum (Not the usual Turntable Question)

  • divineyang
  • · Replies 1 ·
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1

Varying coefficient of friction

  • eeriana
  • · Replies 3 ·
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3

Calculate frequency based on change in hanging mass

  • EroAlchemist
  • · Replies 3 ·
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3

HOw to calculate the number of electrons from a given battery capacity

  • Clark Kent
  • · Replies 1 ·
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1

Burning Off" 200 Cal: How High Must Student Climb?

  • holoforce
  • · Replies 2 ·
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2
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18

Doppler Effect with acceleration Problem

  • zorro
  • · Replies 16 ·
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16

Racing problem with missing acceleration information

  • ksinelli
  • · Replies 5 ·
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5

Lab 16: centripetal acceleration in circular motion

  • Flappy
  • · Replies 6 ·
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6

Instantaneous velocity of a object in projectile motion

  • NightRunnerz
  • · Replies 3 ·
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3

How Does Your Weight on the Moon Compare to Earth?

  • HarbingerGunn
  • · Replies 1 ·
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1

Object on table pulled by hanging object

  • pnwguy17
  • · Replies 3 ·
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3

Belt velocity and acceleration over two pulleys

  • pconn5
  • · Replies 2 ·
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2

The Electric Field of a Cylindrical Capacitor?

  • seekingaeolus
  • · Replies 5 ·
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5

Monochromatic light and reflection

  • okgo
  • · Replies 6 ·
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6

Property of differentials that allow you to ignore this directional change?

  • Whitishcube
  • · Replies 7 ·
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7

Internal explosion, kinetic energy prob

  • pb23me
  • · Replies 2 ·
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2

Interferance term, sum of 2 waves

  • fluidistic
  • · Replies 8 ·
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8

How to Approach Conservative Force Problems on the XY-Plane?

  • Kevii
  • · Replies 2 ·
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2

Special Relativity, Train Question.

  • mmmboh
  • · Replies 5 ·
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5

Magnitude and Direction of Normal FOrce

  • becsantos
  • · Replies 2 ·
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2

How Do You Calculate the Moment of Inertia for a Cone?

  • RivalDestiny
  • · Replies 1 ·
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1
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1

What is the net torque given the angles of applied forces

  • tatiana
  • · Replies 2 ·
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2

How Is the Spring Constant Calculated for Car Vibrations?

  • EroAlchemist
  • · Replies 2 ·
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2

Solve Quadratics: Find Time for Rock Dropped from Washington Monument

  • jubbly
  • · Replies 1 ·
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1

Find force with mass and variable position

  • zrbecker
  • · Replies 2 ·
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2

Calculating Net Force with Multiple Forces Acting on an Object

  • homevolend
  • · Replies 2 ·
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2

Solving a Physics Problem: Net Work Done on a Box

  • APysics
  • · Replies 2 ·
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2

Freebody Diagram for Crate Lifted with Steel Cable at Decreasing Speed

  • homevolend
  • · Replies 3 ·
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3

Finding angles for traffic light with two 80.0 N tensions

  • MadameCassie
  • · Replies 6 ·
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6

Work-energy theorem and resistive forces

  • RedDanger
  • · Replies 1 ·
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1

Rotational Angular Momentum of a Bowling Ball

  • KatlynEdwards
  • · Replies 1 ·
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1

Quantum question - hamiltonian

  • bon
  • · Replies 1 ·
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1

Projectile angle of approach and height of target?

  • kLPantera
  • · Replies 4 ·
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4

Simplifying Quantum Mechanics with Dirac Notation

  • bon
  • · Replies 2 ·
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2

Radius of the path of an accelerating object in uniform Circular motion

  • Runaway
  • · Replies 4 ·
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4

Calculating Work on a Sliding Block: Mass, Speed, and Kinematics

  • coolcalx
  • · Replies 2 ·
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2

Why is the momentum of a system conserved?

  • piareround
  • · Replies 1 ·
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1

Work-energy theorem and Tension Force

  • RedDanger
  • · Replies 1 ·
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1

Why do we add probabilities instead of squaring the amplitude sum?

  • bon
  • · Replies 12 ·
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12

Do the students exert a net torque on the rotating disc?

  • brushman
  • · Replies 2 ·
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2

Tension and torque of a suspended scaffold

  • physics_10
  • · Replies 1 ·
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1

Work done by spring force on rotating disk in circular motion

  • laurenwings5
  • · Replies 2 ·
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2

Sled pulled at 53° to horizontal on snow at constant velocity

  • becsantos
  • · Replies 8 ·
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8

Then F = Delta P/Delta T = (-7.2 kgm/s)/(0.002s) = -3600 N

  • reincarnate
  • · Replies 1 ·
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1
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8

Solving for Distance and Minimum Coefficient of Friction

  • jti3066
  • · Replies 10 ·
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10
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18

A triangle's rotational kinetic energy

  • aitee
  • · Replies 1 ·
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1

Calculating Mass and Velocity in Elastic Collisions: Lab Cart A and B Example

  • runningirl
  • · Replies 3 ·
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3
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8

Work done by Friction on an Inclined Plane

  • fajoler
  • · Replies 2 ·
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2

Plagued by Snell's law and geometry

  • okgo
  • · Replies 1 ·
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1

Finding the forces between two masses

  • Dcarroll
  • · Replies 1 ·
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1

4.8 kg ball dropped 10.5 m onto pivoted rod launches 5.1 kg ball

  • graustet
  • · Replies 1 ·
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1

Including kinetic friction into Work of spring

  • Ambidext
  • · Replies 11 ·
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11

Effect of TIME on SPECIFIC HEAT?

  • donkeycopter
  • · Replies 2 ·
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2