Introductory Physics Homework Help Forum

Post thread
Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Conceptual Physics Homework Questions
  • kevinnn
  • · Replies 4 ·
Replies
4
Problem regarding linear momentum
  • sankalpmittal
  • · Replies 8 ·
Replies
8
Using Energy and Impulse to Solve a Mass on a Spring Problem
  • quark001
  • · Replies 2 ·
Replies
2
How Does the Sun's Position Affect Gravitational Acceleration on Earth?
  • quark001
  • · Replies 1 ·
Replies
1
Circular motion velocity components problem
  • quark001
  • · Replies 1 ·
Replies
1
Problems about calculating acceleration,velocity
  • acelya
  • · Replies 7 ·
Replies
7
How Does Spinning a Mass Affect Atomic Spacing in a Wire?
  • quark001
  • · Replies 1 ·
Replies
1
Find Potential of Disk of Radius R, Charge Q w/ Equ 1
  • Miike012
  • · Replies 3 ·
Replies
3
Ping Pong Ball Projectile Launcher
  • vania1711
  • · Replies 1 ·
Replies
1
How long it takes to discharge capacitor when switch is opened
  • Avalanche
  • · Replies 6 ·
Replies
6
Show that m varies with v in theory of relativity
  • Feodalherren
  • · Replies 8 ·
Replies
8
Small ball on top of big ball angle of departure
  • guitarphysics
  • · Replies 12 ·
Replies
12
High voltage distribution to reduce power loss
  • quanticism
  • · Replies 18 ·
Replies
18
Work done by friction on an incline plane
  • idllotsaroms
  • · Replies 3 ·
Replies
3
Single battery & Single resistor: Series or parallel?
  • JJBladester
  • · Replies 7 ·
Replies
7
Error equation for the balmer series
  • wahaj
  • · Replies 4 ·
Replies
4
How Does Current Distribution Affect Magnetic Fields?
  • CAF123
  • · Replies 1 ·
Replies
1
Two conducting spheres connected by a wire
  • gralla55
  • · Replies 3 ·
Replies
3
Normal and Tangential Coordinates
  • Northbysouth
  • · Replies 1 ·
Replies
1
I have a question about an airspeed/groundspeed word problem
  • PatrickE
  • · Replies 16 ·
Replies
16
I have a question about Kinetic and Potential Energies.
  • Alhussaini
  • · Replies 3 ·
Replies
3
How Does Impulse Affect Momentum in Physics?
  • bona0002
  • · Replies 8 ·
Replies
8
Current Loop in a nonuniform magnetic field
  • PEZenfuego
  • · Replies 6 ·
Replies
6
Torque Provided By A Rocket's Thrust
  • cjavier
  • · Replies 2 ·
Replies
2
Magnetic field due to two wires
  • Siune
  • · Replies 4 ·
Replies
4
How does putting batteries in series increase voltage?
  • Felchi
  • · Replies 8 ·
Replies
8
Relative velocity boat crossing a river
  • Woolyabyss
  • · Replies 3 ·
Replies
3
Understanding Inertial and Non-Inertial Reference Frames
  • Bostonpancake0
  • · Replies 5 ·
Replies
5
Combined Electric field for two charges using electric potential
  • gralla55
  • · Replies 7 ·
Replies
7
Combination of spherical lenses
  • jo 92
  • · Replies 2 ·
Replies
2
Mechanical Energy: Does a Moving Block Have Potential Energy?
  • KTiaam
  • · Replies 2 ·
Replies
2
Rocket Project - need to find mass of rocket to reach 15 m altitude
  • ganoobinator
  • · Replies 2 ·
Replies
2
Max Speed for 5142857 N Weight: Calculate Here
  • Sneakatone
  • · Replies 4 ·
Replies
4
Circular Motion, Massless String - Swinging Rock
  • Shaku
  • · Replies 24 ·
Replies
24
Can a Spring-Propelled Mass Clear the Gap on a Frictionless Ramp?
  • mgerman63016
  • · Replies 6 ·
Replies
6
Creating a Solar Model - Excel Help
  • PeteWheatstraw
  • · Replies 3 ·
Replies
3
Why Does Electric Field Direction Vary with Negative Gradient in Physics?
  • Miike012
  • · Replies 2 ·
Replies
2
At what point does the jumper attain maximum acceleration?
  • Sneakatone
  • · Replies 5 ·
Replies
5
Force to get a crate to overcome static friction
  • CollegeStudent
  • · Replies 6 ·
Replies
6
AC Electronics Problem (Problem with Peak values)
  • septentriones
  • · Replies 2 ·
Replies
2
Object Dropped From 500m: Solved with Differential Equations
  • my-space
  • · Replies 3 ·
Replies
3
The required energy to split up an Oxygen atom
  • Gliese123
  • · Replies 5 ·
Replies
5
Mass of Jupiter given a Moon's mass, orbital velocity and distance.
  • contrivance
  • · Replies 3 ·
Replies
3
Conservation of Energy in a Spring-Powered Glider on an Incline
  • student34
  • · Replies 2 ·
Replies
2
An infinite charged line moving with velocity V and its energy current
  • Verdict
  • · Replies 8 ·
Replies
8
Kinetic Energy and Work Homework Help
  • KTiaam
  • · Replies 9 ·
Replies
9
Calculating Error in Horizontal Velocity for Bouncing Ball Experiment
  • physicssss
  • · Replies 2 ·
Replies
2
Field & Charge Distribution of Conducting Sphere & Shell
  • assaftolko
  • · Replies 6 ·
Replies
6
How do I calculate the total momentum after collision?
  • diorific
  • · Replies 13 ·
Replies
13
Where is the Point of Zero Gravitational Force Between Earth and the Moon?
  • Plutonium88
  • · Replies 16 ·
Replies
16
Reference Frames: Understanding Elevator Motion
  • Bostonpancake0
  • · Replies 3 ·
Replies
3
Is friction a point or distributed force?
  • tofurke
  • · Replies 1 ·
Replies
1
Find the max velocity of the steam in a steady-flow adiabatic nozzle
  • theBEAST
  • · Replies 2 ·
Replies
2
Coulomb's Law, what charge will make the two charges in static eq.
  • rocapp
  • · Replies 6 ·
Replies
6
Rotational Dynamics of a Bicycle wheel
  • Special K213
  • · Replies 3 ·
Replies
3
Finding Length and Diameter Of A Wire
  • Bashyboy
  • · Replies 2 ·
Replies
2
Solving Gauss's Law Problem: Spherical Drop of Water
  • gralla55
  • · Replies 8 ·
Replies
8
How can the pebble stay on the wheel as it rolls?
  • cacofolius
  • · Replies 2 ·
Replies
2
Momentum collision between the ball and the floor
  • physicssss
  • · Replies 3 ·
Replies
3
Center of Mass and Translational Motion
  • mmravunac
  • · Replies 12 ·
Replies
12
Finding the Time Constant in a circuit
  • mlb2358
  • · Replies 1 ·
Replies
1
Sound waves propagation and the doppler effect
  • Jalo
  • · Replies 1 ·
Replies
1
Calculate Centroid of Hemispherical Dome w/ Top Removed
  • jiboom
  • · Replies 3 ·
Replies
3
How to Find the Second Moment of Area for a Rectangle with a Circular Cutout?
  • jiboom
  • · Replies 5 ·
Replies
5
Calculating Rx for a 0 Reading on Voltmeter - Ohm's and Kirchhoff's Laws
  • lendav_rott
  • · Replies 4 ·
Replies
4
A rotating disk with two attached masses that slide without friction
  • cacofolius
  • · Replies 6 ·
Replies
6
Electric Field outside charged metal sphere
  • dpb613
  • · Replies 2 ·
Replies
2
Solving Two-Horse Stump Pulling Problem: Find F2
  • Toranc3
  • · Replies 4 ·
Replies
4
Caesium 137 is an unstable isomer
  • binbagsss
  • · Replies 13 ·
Replies
13
Magnetic field of a Coaxial Cable
  • evanclear
  • · Replies 1 ·
Replies
1
(Optics) Why is lecturer in risk of getting speeding ticket?
  • Mixer
  • · Replies 10 ·
Replies
10
Moment of inertia and angular acceleration
  • physicssss
  • · Replies 3 ·
Replies
3
Why does the normal force affect friction?
  • jumbogala
  • · Replies 2 ·
Replies
2
What to solve for in specific heat energy problem
  • Violagirl
  • · Replies 6 ·
Replies
6
How to normalize Schrodinger equation
  • warnexus
  • · Replies 5 ·
Replies
5
Solving system of equations to find angle and energy of Au atom and α
  • amr55533
  • · Replies 3 ·
Replies
3
What is the role of Shot and Scold in the entropy equation?
  • theBEAST
  • · Replies 4 ·
Replies
4
How to Convert Rotations per/sec to radians per second
  • KTiaam
  • · Replies 2 ·
Replies
2
Rotation Problem: Angular Displacement & Spin Time Calculation
  • KTiaam
  • · Replies 4 ·
Replies
4
What are the forces acting on a boat crossing a still lake at a constant speed?
  • djstar
  • · Replies 3 ·
Replies
3
How to find power from gallons?
  • Sneakatone
  • · Replies 6 ·
Replies
6
Electric Field in 3 Parallel Plates
  • Broem
  • · Replies 2 ·
Replies
2
Merry go round Rotation Problem
  • KTiaam
  • · Replies 3 ·
Replies
3
Find Velocity: Help on Part B | 19.6 J, 5.0 kg, 2.8 m/s
  • KTiaam
  • · Replies 3 ·
Replies
3
Speed and direction of Velocity Vector - Inelastic
  • garretts16
  • · Replies 12 ·
Replies
12
What is the total resistance of the part of the circuit shown in the picture?
  • lendav_rott
  • · Replies 4 ·
Replies
4
Radioactive Decay - Gaussian or Poisson
  • binbagsss
  • · Replies 1 ·
Replies
1
Putting a Compass in a Magnetic Field
  • joel amos
  • · Replies 1 ·
Replies
1
Calculating the Rotational Inertia
  • iAmKhanz
  • · Replies 1 ·
Replies
1
Which block falls off the table first? - Elastic collision
  • garretts16
  • · Replies 1 ·
Replies
1
Three Bulbs in a Circuit, two parallel, one series.
  • Creaturemagic
  • · Replies 2 ·
Replies
2
Where Could the Error Be in My Momentum Equation Calculation?
  • MMCS
  • · Replies 1 ·
Replies
1
Rocket thrust, mass, speed given initial m and fuel consumption rate?
  • rockchalk1312
  • · Replies 4 ·
Replies
4
Determining the direction of current on a wire?
  • riseofphoenix
  • · Replies 16 ·
Replies
16
What is the inverse triangle symbol represent?
  • Outrageous
  • · Replies 2 ·
Replies
2
Solenoid & Lenz's Law: Choosing Option B
  • jinhuit95
  • · Replies 7 ·
Replies
7
Atomic collisions must be elastic?
  • gmark
  • · Replies 5 ·
Replies
5
How to find acceleration from only initial and final velocity
  • tooperoo
  • · Replies 15 ·
Replies
15
How Much Energy is Needed to Move a Satellite to Infinity from Earth Orbit?
  • brometheus
  • · Replies 3 ·
Replies
3
Sending an object to space from earth at different places
  • shotme100
  • · Replies 7 ·
Replies
7