Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
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Projectiles: Bullet Fired into Block
- kah22
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Centripetal Force in Loop-the-Loop Maneuvers: Ranking Normal Forces on a Pilot
- kax0r
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Angular + Linear Velocity problem
- GeorgeCostanz
- · Replies 4 ·
A body thrown upwards from a stand of height
- voltaire101
- · Replies 3 ·
How to Find the Centroid of a Composite Shape?
- Hybrid_Theory
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Bernoulli? Difference in water pressure between floors
- HeatherP
- · Replies 6 ·
Energy dissipated in wire connecting two conducting spheres
- pc2-brazil
- · Replies 5 ·
Calculating Force Needed to Overcome Resistance in m=1.45X10^6 kg Building
- Kiyana
- · Replies 2 ·
How Is Work Calculated in a Friction-Involved Scenario?
- yue_
- · Replies 3 ·
Determining the density of a stellar object
- Johnboy
- · Replies 2 ·
Period of helium balloon on string in inverted pendulum
- DrunkApple
- · Replies 3 ·
I with Radial Acceleration -it is an easy one
- loom
- · Replies 10 ·
Rotational Inertia Four point masses problem-diagonal
- en bloc
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Where Should the Normal Reaction Be in a Static Equilibrium Problem?
- Miike012
- · Replies 1 ·
Two masses colliding at 45 degrees find velocities in terms of V
- Visionary_
- · Replies 2 ·
Sliding Bar in a Uniform Magnetic Field
- alexfloo
- · Replies 1 ·
What is the maximum distance of a stable brick stack without overhang?
- kamikaze1
- · Replies 2 ·
What is the mass density of 0.6 mol of gas at 0 degrees and 1 atm?
- warrior2014
- · Replies 1 ·
Counter rotation theory problem
- Smartguy94
- · Replies 2 ·
Electroplating Zinc onto Copper: Calculating Time Needed
- lw1006
- · Replies 2 ·
Bullet pendulum problem w/ Calculus - AP Physics C
- OtherWindow
- · Replies 1 ·
How Do You Calculate the Period of a Transverse Wave on a Flexible String?
- Tensionfreek
- · Replies 2 ·
Calculating the Speed of an Electromagnetic Wave: Basic Physics Question
- SMA_01
- · Replies 1 ·
Atwood Machine Problem and Newton's 2nd Law
- longchina
- · Replies 1 ·
Solving for spring constant in the period equation
- 03MGCobra
- · Replies 7 ·
Calculating Density Using Archimedes Principle
- physics kiddy
- · Replies 11 ·
Aluminum Cube Raised Temperature
- 1MileCrash
- · Replies 2 ·
Friction, angular momentum, and gyroscope precession problems
- biga415
- · Replies 2 ·
Find kinetic energy from potential energy and moment of inertia?
- cc2hende
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Op-amp circuit with ±10V supply: finding Vin for Vout = -2V
- Femme_physics
- · Replies 42 ·
Sinusoidal current phase angle question
- yy112
- · Replies 1 ·
Using a double angle formula with Snell's Law
- smeiste
- · Replies 13 ·
Moment of Inertia of Cabinet Door - 49.1x76.5cm, 550kg/m3
- blackfoal
- · Replies 5 ·
What is the Force of Water on a Bathtub Plug?
- andorei
- · Replies 21 ·
Acceleration down an inclined plane
- jakerue
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Lab Practical Circuit. Find Unknown Resistance.
- pradeepk
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What Determines the Time Constant for an Inductor in Different Switch Positions?
- TrolliOlli
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Proof Change of kinetic energy in collision
- Meigara.Juma
- · Replies 3 ·
Thermal expansion of liquid in glass tube with given coefficients
- 1MileCrash
- · Replies 3 ·
Force Problem: Calculating Ground Force on Jumping Boy with Stiff-Legged Landing
- Miike012
- · Replies 2 ·
Total flight time of baseball thrown vertically at 3 m/s
- Ilovepysics
- · Replies 9 ·
Average Angular Acceleration of a CD
- kmb11132
- · Replies 2 ·
How Much Force Does a 15 kg Block Exert on a 20 kg Block on an Inclined Plane?
- techie86
- · Replies 3 ·
Proof for moment of Inertia of thin disc
- Redoctober
- · Replies 2 ·
Brave Fish launching himself in a cannon
- maxtheminawes
- · Replies 1 ·
Gravity Formulas for Grade 11 Students
- saad1109
- · Replies 2 ·
Rms value of the half-wave rectified sinusoidal wave
- yy112
- · Replies 11 ·
Satellite orbital velocity and period around Mars at 602 km altitude
- jolynnnicole
- · Replies 1 ·
2D Motion Finding the resultant using components
- Madara Uchiha
- · Replies 5 ·
Circular motion and orbits AP Physics
- jolynnnicole
- · Replies 4 ·
Physics Question Involving Angular Speed and Angular Velocity.
- McAfee
- · Replies 2 ·
What Does the XY Plane Look Like in 3D Rotation Scenarios?
- Miike012
- · Replies 1 ·
Why does force at the tire's center produce no torque?
- Miike012
- · Replies 6 ·
Power Consumption: 10 Amps, 120 Volts = 12 Watts
- tDexx
- · Replies 4 ·
Torque needed for turntable to reach 33.3 RPM in 2 revolutions
- Quarkn
- · Replies 4 ·
A box attached to a pulley on a ramp
- lilsharp
- · Replies 1 ·
What is the maximum height reached by a block on a curved track with friction?
- chaotixmonjuish
- · Replies 16 ·
Finding acceleration from a distance vs time graph of a puck on a slope
- saad1109
- · Replies 4 ·
Max # of 60W Light Bulbs in a 30A 220V Circuit
- tDexx
- · Replies 3 ·
Radiation, temperature of earth, heat transfer
- bulbasaur88
- · Replies 2 ·
Open pipe organ frequency and pipe length for two octaves
- itsbert
- · Replies 4 ·
Momentum and Energy sliding blocks
- diablo2121
- · Replies 5 ·
How Does Conservation of Energy Apply to a Theme Park Ride Through Water?
- murdrobe
- · Replies 12 ·
How Much Power Does an 18Ω Toaster Use on a 220V Source?
- tDexx
- · Replies 4 ·
Simple change in momentum problem
- hms.tech
- · Replies 3 ·
Solving Max Displacement of Spring with 5kg Block and Friction
- thecaksgood
- · Replies 2 ·
Finding distance an object is displaced
- PhysicStuden7
- · Replies 1 ·
Scaling mass and rotational inertia of bowling balls by radius
- Quarkn
- · Replies 3 ·
The physical pendulum - distance, period, and angular frequency
- Hyperfluxe
- · Replies 2 ·
ΜA in a Body with Resistance of 100,000Ω
- tDexx
- · Replies 1 ·
Effectiveness of Heavy vs. Light Hammer in Splitting Logs: An Analysis
- aurao2003
- · Replies 1 ·
How do you find the width needed for a plane mirror
- angiep410
- · Replies 14 ·
Speed of gamma ray emitted by krypton-80 nucleus
- trevorr93
- · Replies 3 ·
Solving Bullet Impacts a Block: Force, Velocity & Distance
- Merlinnair
- · Replies 8 ·
Conceptual questions about rotational dynamics.
- -Dragoon-
- · Replies 3 ·
How do you find the energy stored in capacitors in series and in parallel?
- lcp1992
- · Replies 3 ·
Collisions: Ball with initial velocity is kicked, force of kick?
- Merlinnair
- · Replies 4 ·
Calculus based kinematics problem.
- Phlebas
- · Replies 2 ·
Finding the Velocity of the Bob on a Pendulum
- LukeStarChief
- · Replies 2 ·
How Does Constant Force Affect Kinetic Energy Over Time?
- foxcub156
- · Replies 1 ·
What is the final velocity and angle of ball 2 after collision on a pool table?
- bmx_Freestyle
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Finding the units of k in x(t) = x(0) + x(0)kt^1.5
- Cade
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Concept of dc motor and a.c. generator
- songoku
- · Replies 4 ·
Rigid Body Rotation Application
- lanew
- · Replies 3 ·
Finding weights w1 and w2 with horizontal cable tension of 100 N
- MorphuesMark
- · Replies 1 ·
Capacitors moving with constant v
- physicsjock
- · Replies 5 ·
Ratio of Periods for Vertically Oscillating Rods of Different Lengths
- rubenhero
- · Replies 6 ·
Magnetostatics. Calculate the magnetic flux density.
- beyondlight
- · Replies 1 ·
Miller Indices (Solid State Physics)
- SeanGillespie
- · Replies 1 ·
Gravitational Potential and Kinetic Energy
- yttuncel
- · Replies 2 ·
Spring-launched block falling 0.80 m to a target 1.2 m away
- kayjaydee
- · Replies 3 ·
Pendulum swinging above earth's surface
- rubenhero
- · Replies 7 ·
Calculating Tension Force Problem
- Declension
- · Replies 9 ·
Magnetic Field in an Infinitely Long Copper Rod
- Xnipes
- · Replies 1 ·
Plastic Ball Launcher Lab over Spring constand and muzzle velocity
- ictsyd
- · Replies 1 ·
Why is there confusion with the sign in Hooke's Law equations?
- smashX
- · Replies 5 ·
Work and acceleration of a touchdown
- Archetype2
- · Replies 3 ·
Calculating Refraction Through a Prism
- FluffynpinK
- · Replies 2 ·
Can I apply volume expansion this way?
- 1MileCrash
- · Replies 1 ·
I can't figure this one out thermal expansion of rod and ruler
- 1MileCrash
- · Replies 1 ·