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

Period for SHM of a block on a spring shot by a bullet

  • ggorrilla
  • · Replies 4 ·
Replies
4

How Does Gauss' Law Apply to Electric Fields in a Hollow Sphere?

  • underground
  • · Replies 4 ·
Replies
4

Work and frequency caused by mutual potential energy

  • phys17
  • · Replies 4 ·
Replies
4

How Far Does a Block Slide Up a Ramp Before Stopping?

  • getty102
  • · Replies 3 ·
Replies
3

Torricelli Barometer and atmospheric pressure

  • bznm
  • · Replies 1 ·
Replies
1

Calculating Momentum & Velocity After Football Collision

  • domyy
  • · Replies 16 ·
Replies
16

Length contraction - problems with transformation and time

  • kapitan90
  • · Replies 3 ·
Replies
3

Find initial velocity and time in the air- projectile motion

  • dani123
  • · Replies 1 ·
Replies
1
Replies
5

Maximum possible amplitude of oscillation

  • rlukis
  • · Replies 1 ·
Replies
1

Length of string on instrument to produce specific frequency

  • idkididk
  • · Replies 3 ·
Replies
3

Periodic Motion - Spring hung vertically from ceiling.

  • rlukis
  • · Replies 1 ·
Replies
1
Replies
3

Adiabat Process - with pV cycle

  • hevans1303
  • · Replies 1 ·
Replies
1

Tangential acceleration - radial acceleration

  • finitefemmet
  • · Replies 2 ·
Replies
2

What Calculations Are Needed to Solve This Third Order Lever Problem?

  • junkie_ball
  • · Replies 1 ·
Replies
1

What is the work needed to raise a balloon of water?

  • bznm
  • · Replies 9 ·
Replies
9

Similar to the swimmer problem:

  • Rachel0
  • · Replies 9 ·
Replies
9

Analysing a pulley block system

  • Boltzmann2012
  • · Replies 1 ·
Replies
1

Vector Diagram for Homework - Assistance and Solution

  • jsmith613
  • · Replies 8 ·
Replies
8

How Much Heat is Needed to Turn Ice at -10°C into Steam at 110°C?

  • domyy
  • · Replies 13 ·
Replies
13

Moment of inertia - displaced axis

  • finitefemmet
  • · Replies 2 ·
Replies
2

Truss/equilibrium homework help

  • amyparker30
  • · Replies 7 ·
Replies
7

Can any of you guys help to understand coefficient

  • suryanarayan
  • · Replies 2 ·
Replies
2

Simple Harmonic Motion vibration Question

  • rikiki
  • · Replies 11 ·
Replies
11

Distance between two bright fringes

  • csinger1
  • · Replies 2 ·
Replies
2

Average Speed Of a and b where d and t is not given

  • rajatbbsr
  • · Replies 10 ·
Replies
10

Electric potential energy of the two protons?

  • shahin93
  • · Replies 1 ·
Replies
1

Solving Uniform Acceleration: Calculating Velocity & Distance

  • Bmrboi
  • · Replies 5 ·
Replies
5

Calculating Induced Current in an Expanding Loop

  • Andy13
  • · Replies 7 ·
Replies
7

Calculating Final Speed of a Thrown Object with Changing Momentum

  • quantumpanda
  • · Replies 2 ·
Replies
2

How Fast Will a Rocket Go If It Burns Half Its Mass in Fuel?

  • jcrongo
  • · Replies 1 ·
Replies
1

Does Static Friction Contribute to Work in an Inclined Car?

  • Zhalfirin88
  • · Replies 4 ·
Replies
4

Calculating Angular Momentum and Velocity of a Rotating Ring-Disk System

  • november1992
  • · Replies 5 ·
Replies
5

Numerical Problems: The U.S. National Debt

  • sfgradv
  • · Replies 3 ·
Replies
3

Calculating Time for an Airplane to Come to Rest Using Classical Mechanics

  • Prototype44
  • · Replies 6 ·
Replies
6

Kinetic Energy's Effect on Electron's Radius in Magnetic Field

  • mirandab17
  • · Replies 1 ·
Replies
1

Kepler's Law Program With Planets

  • hardygirl989
  • · Replies 7 ·
Replies
7

At what angle will a box start to slide

  • TheronSimon
  • · Replies 1 ·
Replies
1

Speed of a proton question - Need Help~

  • nukeman
  • · Replies 1 ·
Replies
1

Having trouble understanding the relationship between these expressions

  • coldjeanz
  • · Replies 2 ·
Replies
2

Phase difference in a two slit interference problem

  • DODGEVIPER13
  • · Replies 1 ·
Replies
1

Solve Time to Catch Speeding Car: Police Officer Acceleration of 5 m/s2

  • Mdhiggenz
  • · Replies 2 ·
Replies
2

Finding Work Done by Compressing A Spring

  • rk21619
  • · Replies 3 ·
Replies
3

Spherically Symmetric Charge Distribution

  • steelclam
  • · Replies 1 ·
Replies
1

How to find the wavelength of a Photon with no mass?

  • nukeman
  • · Replies 1 ·
Replies
1

Distance of the centre of gravity

  • John78
  • · Replies 1 ·
Replies
1

Moment of intertia of a W figure

  • arnab321
  • · Replies 7 ·
Replies
7

HELP Mass per unit length equation

  • mac b
  • · Replies 6 ·
Replies
6

Can any of you guys help to understand kinetic energy?

  • suryanarayan
  • · Replies 5 ·
Replies
5

Are there different kinds of series circuits?

  • huey910
  • · Replies 3 ·
Replies
3

Newtons third law, elevator question (free body diagram)

  • supernova1203
  • · Replies 2 ·
Replies
2

Few Problems (Waves, Elasticity, SHM)

  • MrWarlock616
  • · Replies 9 ·
Replies
9

Equation For Charging Current In Accumulator

  • chikis
  • · Replies 4 ·
Replies
4

Newton Law Gravitation - Multiple choice question?

  • jsmith613
  • · Replies 3 ·
Replies
3

Uniform circular motion - 2 dimensional - 2 forces

  • finitefemmet
  • · Replies 8 ·
Replies
8

Gravitation Field Problem With Equal Masses

  • hardygirl989
  • · Replies 1 ·
Replies
1

Newtons second law and kinematics

  • nadinelyab
  • · Replies 5 ·
Replies
5

How Do I Derive Equation 2 from Equation 1 in Physics?

  • mazz1801
  • · Replies 2 ·
Replies
2
Replies
1
Replies
2

Simple Harmonic Motion and Springs

  • MRMooneyham
  • · Replies 32 ·
2
Replies
32

Bernoullis principle and lift on a wing of plane

  • bfusco
  • · Replies 2 ·
Replies
2

Tortoise vs Hare: Solve Homework Problem

  • Prototype44
  • · Replies 1 ·
Replies
1

How do frequency and mass affect centripetal force in lab experiments?

  • n3w ton
  • · Replies 2 ·
Replies
2

Is Relative Velocity Crucial for Rocket Launch Direction?

  • TheronSimon
  • · Replies 5 ·
Replies
5

Dynamics question. inclined plane

  • Raye
  • · Replies 1 ·
Replies
1

Angle of vevtor in component form

  • arukia
  • · Replies 3 ·
Replies
3

Troubleshooting Rolling Log Acceleration on a Ramp

  • Mdhiggenz
  • · Replies 1 ·
Replies
1

LRC Circuit Problem: Calculate Voltage Across Inductor

  • rabcdred
  • · Replies 11 ·
Replies
11

Humphrey the Singing Whale and his mate Matilda.

  • ScienceGeek24
  • · Replies 1 ·
Replies
1

Pressure exerted by 1 leg of a chair.

  • bfusco
  • · Replies 3 ·
Replies
3

How Long Before Hearing a Sonic Boom from a Supersonic Plane at Mach 3?

  • ScienceGeek24
  • · Replies 3 ·
Replies
3

Why Is There a Negative Sign in the Work-Energy Equation?

  • 4570562
  • · Replies 3 ·
Replies
3

Rotational motion of a spinning disk

  • november1992
  • · Replies 2 ·
Replies
2

Factors that would increase magnetic flux through a coil?

  • mirandab17
  • · Replies 1 ·
Replies
1

How to find the wavelength of a particle with mass?

  • nukeman
  • · Replies 1 ·
Replies
1

Vector force& and Optic question

  • lionely
  • · Replies 8 ·
Replies
8

How High Must the Plane Fly to Drop Supplies Accurately?

  • Prototype44
  • · Replies 1 ·
Replies
1
Replies
6

Potential Energy - Finding Balance Points

  • Jalo
  • · Replies 1 ·
Replies
1

Antennas causing destructive interference

  • PirateFan308
  • · Replies 7 ·
Replies
7

How far from the left end should the fulcrum be placed?

  • Mdhiggenz
  • · Replies 2 ·
Replies
2

Simple Harmonic Motion find Mass

  • mhz
  • · Replies 1 ·
Replies
1

Force to move a bar in a magnetic field

  • QuarkCharmer
  • · Replies 3 ·
Replies
3

Many failed attempts on this displacement/acceleration/velocity problem.

  • knnguyen
  • · Replies 1 ·
Replies
1

Heat of vaporization ( thermal physics) helppp pleasee ?

  • Student-
  • · Replies 5 ·
Replies
5

No idea how to find applied forced based on kinetic friction and acceleration.

  • AmbitiousKid
  • · Replies 1 ·
Replies
1

Kinetic Energy, work and force Sand conveyor problem

  • magiclink
  • · Replies 7 ·
Replies
7

Need some guidance through a dynamics problem.

  • vvvether
  • · Replies 4 ·
Replies
4

Find Mass of Box K for 25 Degree Angle in Pulley Assembly | Pulley Question Help

  • bobmarly12345
  • · Replies 8 ·
Replies
8

Static Electricity, Spheres question

  • vaironl
  • · Replies 1 ·
Replies
1

Horizontal spring, mass and nonconstant friction

  • Siune
  • · Replies 1 ·
Replies
1

Veriticle springs; period and mass?

  • wow22
  • · Replies 19 ·
Replies
19

Centripetal acceleration changing radians/s into rpm's

  • mhuffman
  • · Replies 1 ·
Replies
1

What is the minimum amount that the spring must be compressed

  • chowwagon24
  • · Replies 2 ·
Replies
2

Calculating Displacement with Sine Waves

  • ScienceGeek24
  • · Replies 8 ·
Replies
8
Replies
1

Gamma radiation decay question.

  • rollcast
  • · Replies 1 ·
Replies
1

How long is discus in the air and the horizontal distance traveled

  • dani123
  • · Replies 4 ·
Replies
4