Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Does Heating a Pop Can Increase Internal Pressure?
- p.ella
- · Replies 2 ·
Pulling my hair out over this one
- kieslingrc
- · Replies 10 ·
Find max height of inclined plane
- Ilovepysics
- · Replies 1 ·
Building a Sand-Travelling Car that Fires a Projectile
- Cryotube
- · Replies 2 ·
Two Balls - One Suspended, One Stationary
- Rarugged
- · Replies 8 ·
Projectile shot horizontally from a 620 m cliff at 220 m/s
- catallie16
- · Replies 1 ·
Which Equation Determines Angular Displacement for a Rotating Pulley Wheel?
- lubo
- · Replies 1 ·
How Long Does a Hohmann Transfer from Earth to Vesta Take?
- yz250fcaptain
- · Replies 1 ·
Movement caused by wind (changing force)
- BitterX
- · Replies 5 ·
Kinetic Energy and Parabolic Motion
- thoradicus
- · Replies 3 ·
What is the meaning of m3 kg-1 s-2 in gravitational constant
- manvirsingh
- · Replies 2 ·
Find the normal force on an inclined plane.
- dirgenowitzki
- · Replies 3 ·
Torque from rope tension at an angle on a tree
- mizzy
- · Replies 9 ·
Electromagnetism/Permeability Question
- blarginsnarf
- · Replies 1 ·
A 50-kg object was dropped from a height of 2 meters from water level
- grave
- · Replies 1 ·
Solving for Acceleration & Tension: Newton's Laws
- sweet_girl123
- · Replies 4 ·
If wind blows at 39 m/s over a house,
- Carnivroar
- · Replies 10 ·
Static equlibrium with friction
- canicon25
- · Replies 1 ·
Answer Right? Calculate Satellite Slow-down, Find Relativity Speed-up
- grave
- · Replies 1 ·
Field Intensity of Flat Capacitor
- fonz
- · Replies 1 ·
Some Easy Questions About Electricity
- joenot443
- · Replies 6 ·
How Does a Deuteron Splitting in a Cyclotron Affect Particle Trajectories?
- pc2-brazil
- · Replies 1 ·
What Is the Magnitude of the Impulse Delivered to the Football?
- IBdoomed
- · Replies 1 ·
Hiker on a bridge: forces on supports at each end
- VincentweZu
- · Replies 1 ·
Calculating Speed & Acceleration of Banelings
- grave
- · Replies 2 ·
What is the net force acting on a submerged juniper wood plank?
- kieslingrc
- · Replies 1 ·
What is the displacement after traveling on two different compass headings?
- Scooter I
- · Replies 8 ·
Induced current in aluminum ring around solenoid
- twisted079
- · Replies 1 ·
I with a problem from yale physics open courseware?
- lezoujonathan
- · Replies 5 ·
Circular Motion (finding speed)
- lindsey0307
- · Replies 2 ·
Satellite orbital radius, speed, and period from gravitational force
- HarleyM
- · Replies 2 ·
Using Bernoulli to find volume of water to pass through hole
- mm2424
- · Replies 3 ·
Thevenin equivalanet and max power question
- takeiteasy
- · Replies 2 ·
Finding resultant vector given two vectors and the angle between them
- danialq15
- · Replies 1 ·
Calculating Tension and Friction in a Pulley System
- LiFK
- · Replies 1 ·
Meteor Accelerating towards the Earth
- HarleyM
- · Replies 1 ·
Apparent Weight in a Spinning Space Station
- HarleyM
- · Replies 1 ·
How to arrive at answer for integration question
- Alexenn
- · Replies 3 ·
Force on tank bottom from gauge pressure
- kieslingrc
- · Replies 10 ·
Universal Gravitation Question (solving for distance)
- lindsey0307
- · Replies 4 ·
How Do Energy Conversions Occur in a Spring-Loaded Device?
- imy786
- · Replies 2 ·
Understanding Faraday Cages: Choosing the Right Copper Mesh for 400 MHz Signals
- Rattlerdad
- · Replies 1 ·
Statics problem - bridge made of 2 segments
- Kattik
- · Replies 2 ·
How Do You Calculate Normal Force and Speed in Physics Problems?
- cjb19
- · Replies 4 ·
Bird Flies Between Two Trains Crashing at 60m/s
- neutrino'
- · Replies 31 ·
Dropping from 4 times the height, how much longer does it take?
- Kaldanis
- · Replies 10 ·
Air Bubbles and Terminal Velocity-> why is my answer wrong? (all work shown)
- afg_91320
- · Replies 5 ·
Application of archimede's principle
- vrinda mukund
- · Replies 1 ·
Pressure drop in tapered water pipe using Bernoulli's equation
- TMO
- · Replies 1 ·
Why does the normal force point away from the surface?
- Amideus
- · Replies 9 ·
Forces with angles, Find the acceleration
- plumeria28
- · Replies 3 ·
Finding entropy change when house leaks heat
- rubenhero
- · Replies 3 ·
Number of images formed by two concave lens, one displaced from optical axis
- Sumedh
- · Replies 2 ·
Finding displacement for two successive walks
- Scooter I
- · Replies 2 ·
Conservation of linear momentum applied to rotating systems? (with picture)
- lillybeans
- · Replies 3 ·
Reading a P-V Diagram for heat in/out and work in/out
- mm2424
- · Replies 1 ·
Taking the derivative of displacement
- cs23
- · Replies 1 ·
Roller coaster rider weight problem
- Cisneros778
- · Replies 3 ·
Two blocks tied to a string with mass and accelerating
- RadiantL
- · Replies 3 ·
Concentric Metal Sphere - Gauss's Law
- fonz
- · Replies 12 ·
How do black holes relate to physics?
- coyotewater
- · Replies 1 ·
Rotating rod with little rings that slides out
- amiras
- · Replies 4 ·
What Are the Correct Units of Coulomb's Constant?
- ZedCar
- · Replies 3 ·
Rigid Body Dynamics: balls colliding
- AndersLau
- · Replies 3 ·
Circular motion-mass and radius given- finding frequency and force
- sean-820
- · Replies 4 ·
How Does Moving a Boat Affect Scale Readings and Torque?
- canicon25
- · Replies 3 ·
Finding force at hip in statically indeterminate leg model
- Chelsiukas
- · Replies 2 ·
Are my answers correct? (Newton's laws etc)
- Kaldanis
- · Replies 4 ·
Why Is the Change in Momentum 8Ns Instead of -8Ns?
- thoradicus
- · Replies 2 ·
When to include hydrostatic pressure term in force problems?
- elchoi
- · Replies 4 ·
Force = Mass x Acceleration + Gravity?
- glambeth
- · Replies 8 ·
How Fast is a Clock Moving if It Runs Four Times Slower?
- ZedCar
- · Replies 4 ·
Electric Potential related to velocity
- jeandempsey
- · Replies 5 ·
Problem with Thermodynamics. Period dependence on temparature.
- AudriusR
- · Replies 13 ·
How Do You Calculate Normal Force and Tension Direction at Point O?
- laimonel
- · Replies 5 ·
Finding Time For Projectile Motion
- phhysicssai
- · Replies 3 ·
Help with NCEA physics exam questions
- adupadu
- · Replies 1 ·
Can you write the ideal gas law this way?
- mm2424
- · Replies 1 ·
Calculating Metacentric Height: How Do I Solve This Ship Stability Problem?
- logearav
- · Replies 2 ·
Torque/Moment of inertia. Find the mass of the sphere.
- whatusername
- · Replies 17 ·
Trying desparately to wrap my head around proportional relationships
- Ontophile
- · Replies 1 ·
How Do You Calculate Temperature at a Depth Based on Surface Conduction Rates?
- mm2424
- · Replies 3 ·
What is the required impulse to bring the car to rest?
- freeofwork
- · Replies 1 ·
Electric field of a point near a dipole
- jack343
- · Replies 6 ·
Torque problem involving bicep holding ball
- elchoi
- · Replies 1 ·
Calculating the Moment of Inertia of the Sun for Determining Rotational Energy
- AndersLau
- · Replies 2 ·
Avoiding calculation errors when entering numbers into my calculator
- frosty7
- · Replies 1 ·
Work done pushing a 100N block up a 37° incline 2m
- Saitama
- · Replies 15 ·
Finding normal force on a block moving up a frictionless ramp
- phy5ic5
- · Replies 17 ·
How Do You Calculate Initial Temperature Using Newton's Law of Cooling?
- luigihs
- · Replies 5 ·
Mechanics of Materials - Shear and Compression
- Femme_physics
- · Replies 5 ·
Monkey force diagram and tension problem
- TyChi
- · Replies 1 ·
Tension Problem: How a Horizontal Force Affects Rope Tension
- TyChi
- · Replies 1 ·
Required tension of rope around a cylinder to hold a object.
- kaar
- · Replies 3 ·
Resonance frequencies question (first and second resonance frequencies)
- supernova1203
- · Replies 1 ·
How Can Theta Be Integrated into the Projectile Motion Equation?
- chillb0y
- · Replies 4 ·
Question on Archimedes principle.
- vkash
- · Replies 7 ·
What is the Tension in a Vertical Circular Path with Given Parameters?
- physicsluv
- · Replies 24 ·
Finding mass of a planet when density varies with radial distance
- Smartguy94
- · Replies 7 ·