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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Diffraction Grating wavelengths
- rojasharma
- · Replies 3 ·
Carts with different wheel sizes: which is easier to push?
- spkspkspkspk
- · Replies 4 ·
Problems with Electric Field questions
- User1247
- · Replies 3 ·
Blocks connected by rope, Newton's Third Law
- StephenDoty
- · Replies 3 ·
What is the maximum acceleration of this car on a concrete surface?
- StephenDoty
- · Replies 3 ·
Find Ratio of Resistors R_1/R_2
- Milquetoast
- · Replies 1 ·
Calculating two masses colliding
- Denton
- · Replies 1 ·
What is the speed of the missile, relative to ship B?
- vachan
- · Replies 1 ·
How Does Charge Affect Force in an Electric Field?
- ahero4eternity
- · Replies 2 ·
Angular velocity as car passes by man.
- DocZaius
- · Replies 9 ·
How to Calculate Work for Lunar Lander Orbit Change
- sam2k2002
- · Replies 7 ·
Why Does Superposition Give Different Results in PSPICE?
- jesuslovesu
- · Replies 1 ·
Electric field induced in a ring
- hapax
- · Replies 1 ·
Force/Magnetism direction question (w/diagram)
- nophun6
- · Replies 5 ·
What is the surface gravity on this distant planet?
- sam2k2002
- · Replies 6 ·
Ice cube launched by spring up a 33° slope
- Moe*
- · Replies 2 ·
Linear thermal expansion of a 30 m aluminum wing
- travism123
- · Replies 8 ·
Why is red light seen at the bottom of a soap bubble?
- rojasharma
- · Replies 4 ·
What is the effect of increased spacecraft speed on astronaut's pulse rate?
- rojasharma
- · Replies 18 ·
How Does a Bullet Affect Pendulum Motion?
- pauln
- · Replies 1 ·
Find Magnetic Field of Parallel Conductors at Different Locations
- BunDa4Th
- · Replies 6 ·
Diffraction grating with 520nm and 630nm light through 6000 lines/cm
- rojasharma
- · Replies 7 ·
Nuclear reactions and their applications
- rojasharma
- · Replies 3 ·
Static Equilibrium of an automobile
- Seraph404
- · Replies 1 ·
What are the Boundary Conditions for Dielectric Interfaces?
- plmokn2
- · Replies 6 ·
Magnetic Fields Produced by Currents
- bobbworm42
- · Replies 1 ·
What beat frequency will the observer detect?
- mortho
- · Replies 4 ·
Explain Electron's Speed for Probing Nucleus
- rojasharma
- · Replies 4 ·
How do I label quarks and leptons in a deuterium atom diagram?
- rojasharma
- · Replies 7 ·
Anyone Taking Grade 12 Physics Through Ilc Or Has Taken In Past?help Needed
- rojasharma
- · Replies 10 ·
Acceleration after a Colission
- lacyme
- · Replies 2 ·
Electron falling from infinity to 10^-8 m from a charge
- User1247
- · Replies 1 ·
How Much Water Must Flow Over the Grand Coulee Dam to Generate 2000 MW of Power?
- iamkristing
- · Replies 1 ·
Nuclear Fission Basics: Calculating Energy Released U-235
- rojasharma
- · Replies 5 ·
A woman carries a bucket to the top of a 40 m tower
- iamkristing
- · Replies 2 ·
Forces: acceleration with a sun yacht
- wegman14
- · Replies 4 ·
Images Formed by converging mirros
- jeahomgrajan
- · Replies 6 ·
Momentum Concervation and Collisions
- mr.quakers
- · Replies 4 ·
Inclined plane and force of friction
- dranseth
- · Replies 11 ·
A Simple Way to Measure Magnetic Fields
- cse63146
- · Replies 5 ·
Why subtract the 16 degree angle in this torque problem
- lizology101
- · Replies 13 ·
How Is Work Calculated in Electric Fields?
- rojasharma
- · Replies 12 ·
Minimum dart speed for sphere to complete circular loop after collision
- fiestyman001
- · Replies 2 ·
Unit conversions and significant digits
- jwj11
- · Replies 6 ·
How to Calculate Current Distribution in a Circuit?
- jcpwn2004
- · Replies 3 ·
Is Traveling at the Speed of Light Impossible?
- rojasharma
- · Replies 6 ·
What is the rocket's initial upward acceleration?
- cookiekid20
- · Replies 1 ·
What Causes Two Voltage Peaks in Magnetic Induction Experiments?
- ashleyrose03
- · Replies 1 ·
Electric potential at center of circular arc
- cyberstudent
- · Replies 6 ·
Observing Light through Two Slits: Wave vs. Particle Theory
- rojasharma
- · Replies 1 ·
Is Direct Substitution Effective for Solving Linear Wave Equations?
- ~christina~
- · Replies 10 ·
How Do Relativity Effects Impact Age During Space Travel?
- rojasharma
- · Replies 5 ·
Derivation of an S.H.M. Equation
- fatboy_1989
- · Replies 2 ·
Can radio waves separate hydrogen and oxygen from salt water?
- madchemist
- · Replies 1 ·
Magnetic Field Using Amperian Loops inside a wire
- Fusilli_Jerry89
- · Replies 3 ·
Parallel plate capacitor and charge density
- tony873004
- · Replies 2 ·
Ammeter Connections for Battery Current Measurement
- HeLLz aNgeL
- · Replies 5 ·
Moment of Inertia: 4 Spheres Connected by Rods in Square
- amm617
- · Replies 1 ·
Questions on electric potentials of systems and electrons.
- LostShadow
- · Replies 7 ·
Calculating RC-Constant of Coaxial Cable
- electricman
- · Replies 2 ·
Coefficient of Friction of a hockey puck
- panvietboy
- · Replies 9 ·
Difficult Eletrical angle force problem
- Shadowsol
- · Replies 2 ·
The Motion of the Center of Mass
- Penguins66
- · Replies 1 ·
Draw Freebody Diagram: 10+ Forces at Rest
- checkmarks
- · Replies 4 ·
How Do I Solve This Initial-Value Problem Correctly?
- morbello
- · Replies 4 ·
Calculating Maximum Height of a Child Swinging from a Rope
- kassy_in_the_sky
- · Replies 5 ·
What is 2x10-4cm converted to metres?
- Colin_m
- · Replies 3 ·
How Should a Spring Be Compressed to Launch Blocks to Specific Heights?
- cooltee13
- · Replies 8 ·
Solving dy/dx = e^-3y cos x (1+sin x)^2
- morbello
- · Replies 3 ·
Different ways that Log appears
- grscott_2000
- · Replies 3 ·
How Does Lowering Density Affect Trajectory?
- jillz
- · Replies 10 ·
What is the Distance Between Two Stones Dropped from a Well in One Second?
- myoplex11
- · Replies 2 ·
Simple standing wave question- not exactly sure why I can't get answer?
- ~christina~
- · Replies 7 ·
Solving the Mass Sliding Problem with Increased Height h
- kirste
- · Replies 1 ·
Find the frequency of the lowest note a piccolo can sound
- ~christina~
- · Replies 4 ·
Angular Momentum Lab: Impact of Dropping Disk Off-Center
- frasifrasi
- · Replies 4 ·
Solving the Expansion of the Crab Nebula
- Fizzicist
- · Replies 1 ·
Doppler shift with moving observer, source and wind
- ~christina~
- · Replies 7 ·
What is the speed of the bat gaining on its prey in m/s?
- bastige
- · Replies 1 ·
Doppler effect with accelerating car and moving train
- bastige
- · Replies 1 ·
Electric Field Inside a Hydrogen Atom
- viperassasin
- · Replies 3 ·
Charging current - jumpstarting a car
- tony873004
- · Replies 2 ·
Equation for molar specific heat
- Metalsonic75
- · Replies 2 ·
Two small insulating spheres with radius
- viperassasin
- · Replies 2 ·
Conservation of momentum for Joe and John playing catch in space
- JJphysics83
- · Replies 1 ·
Calculating Friction Force on Two Accelerated Blocks
- buys.trevor
- · Replies 4 ·
Why two 1000-W heaters in series draw less than 2000 W
- chantalprince
- · Replies 16 ·
Angular Displacement of bike pedals
- snowmx0090
- · Replies 4 ·
Proving Equation: tan^2θ - sin^2θ = tan^2θsin^2θ
- Spahrtacus
- · Replies 3 ·
Calculating Electric Field at 0.8m from Charges on x-Axis
- soul5
- · Replies 2 ·
What Angle Prevents a Cylinder from Slipping on an Inclined Plane?
- NAkid
- · Replies 1 ·
How Does Elasticity Affect Collisions in Baseball Physics?
- alexithymia
- · Replies 6 ·
Special Relativity: Photon emission by a moving atom
- Helgi
- · Replies 1 ·
Why does packaging protect eggs from breaking when dropped?
- kortayabs
- · Replies 3 ·
Coefficient of friction on a 45° waterslide ramp
- tbone413
- · Replies 5 ·
Linear Momentum and Collisions - True/False
- Melchior25
- · Replies 1 ·
Newton's Law & Gravitational F: Finding the Accl'n for a sphere
- BootyBabe
- · Replies 1 ·
Rocket and Gravitational Potential Energy
- kiwikahuna
- · Replies 7 ·
Work required to stretch a spring 2cm vs 1cm
- msattar07
- · Replies 3 ·
Newtons Law Problem: objects and pulleys
- wegman14
- · Replies 1 ·