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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Photoelectric effect and copper
- Pengwuino
- · Replies 5 ·
Solving for the Mass and Velocity of a Puck After a Perfectly Elastic Collision
- Azytzeen
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Writing the equation for germanium dioxide heated with carbon
- Dragonfly6191
- · Replies 4 ·
Can a car stop or cross a yellow light in 2.0 seconds?
- Gughanath
- · Replies 6 ·
Incomplet notes on integration by parts
- RadiationX
- · Replies 7 ·
Proving (A\cap B)-(A\cap C) using x\in[A\cap(B-C)]
- Kamataat
- · Replies 3 ·
Roller Coaster Car: Apparent Weight vs. True Weight
- sevens
- · Replies 4 ·
Solving Problems Involving Simple Harmonic Oscillators
- dalitwil
- · Replies 4 ·
Finding net resistance in a circuit with two parallel paths from battery
- F|234K
- · Replies 13 ·
Ball A (3 kg) slides down from 1.8 m and collides with ball B (1 kg) on a wire
- Brian Earley
- · Replies 9 ·
Angular velocity, speed, and period of a phonograph record at 77.6 rpm
- Jayhawk1
- · Replies 2 ·
Deriving Coefficient of Static Friction for Inclined Textbook and Coin
- nerdonsite
- · Replies 2 ·
Solving a Rocket Launch Problem: Find the Fuel Mass Fraction
- tony873004
- · Replies 4 ·
Understanding Compound Interest and Calculating RRSP Growth
- aisha
- · Replies 2 ·
Finding annual interest rate from two deposits with compound interest
- aisha
- · Replies 2 ·
How Do You Correctly Evaluate an Iterated Integral Involving a Step Function?
- Pietjuh
- · Replies 2 ·
Solve Physics Problem: Coefficient of Friction on Steep Incline with Supertruck
- Charlie Brown
- · Replies 3 ·
Coordinate Geometry II TRIANGLES
- aek
- · Replies 2 ·
Estimating Mass Inside Galaxy Using Centrifugal Force
- orange
- · Replies 2 ·
How to avoid loading with 50Ω source and 1kΩ load
- zekester
- · Replies 2 ·
Calculating Weight on a Neutron Star
- Logistics
- · Replies 8 ·
SR problem, howd they get here?
- Pengwuino
- · Replies 9 ·
Calculate Mass Exhausted Per Second from Space Shuttle Thrust
- tony873004
- · Replies 3 ·
How Is the Force on a Conductor Affected by Current and Distance?
- fasterthanjoao
- · Replies 2 ·
Physics Communication Questions
- aek
- · Replies 2 ·
Main disagreements between Galvani and Volta on electric current origins
- aek
- · Replies 2 ·
Simplifying Complex Circuit Diagrams
- F|234K
- · Replies 21 ·
How do you take integral of cot ?
- EasyStyle4747
- · Replies 8 ·
Non-Linear Functions: Golf Ball Trajectory Analysis & Formulas
- alyssa
- · Replies 2 ·
Describe the locus points that are 3 units from line y = 2x – 3
- aisha
- · Replies 13 ·
Astrophysics Problem - Protons Collision Temperature at Washington U
- Tloh
- · Replies 3 ·
Solving Physics Lab Challenge: Aim the Gun for the Cup
- mohlam12
- · Replies 2 ·
Sum of squares of coordinates equals 9
- aisha
- · Replies 5 ·
Why does the Lorentz transformation only affect the x axis?
- binarybob0001
- · Replies 3 ·
Are centripetal and centrifugal forces both effects or just one?
- chunkymonkey
- · Replies 6 ·
Is current used up in a resistor or the voltage is used up?
- F|234K
- · Replies 15 ·
Isolated charged conducting sphere problem
- abot
- · Replies 4 ·
Calculating Refractive Power of Two Lenses Combination
- snnicols
- · Replies 5 ·
Equation of a locus 3 units from a circle's circumference
- aisha
- · Replies 6 ·
Expanding Power Series: (1- $\frac{2n}{(n+1)^2})^2$
- stunner5000pt
- · Replies 2 ·
What Is the Equation for a Locus Equidistant from the X and Y Axes?
- aisha
- · Replies 3 ·
How Do You Integrate a Wave Function to Find Electron Probability?
- bemigh
- · Replies 2 ·
Impulse from a soccer ball deflected 52 degrees
- whereisccguys
- · Replies 7 ·
Locus of points with distance sum =8
- aisha
- · Replies 5 ·
Is my equation for finding equidistant points correct?
- aisha
- · Replies 4 ·
Bullet fired into block attached to spring
- tsdemers
- · Replies 3 ·
Work and energy for a book carried and lifted 1.5 m
- kinski_girl
- · Replies 2 ·
Equilibrium meter stick problem
- jaymode
- · Replies 10 ·
Magnetic Field & Potential: Northward Motion of a Horizontal Rod
- leolaw
- · Replies 7 ·
What is the Relationship Between K and X in a Quadratic Equation?
- TSN79
- · Replies 4 ·
Tension in ropes connecting blocks
- sevens
- · Replies 2 ·
Forces (People and Earth) Problem
- IntellectIsStrength
- · Replies 8 ·
Science fair project ideas for quantum or theoretical physics
- sdp
- · Replies 2 ·
Time dilation at 90% speed of light for 20 minutes
- cd27
- · Replies 22 ·
Work Done on Supertanker: Solve Problem w/ 1.4x10^6 N Tugboats
- gazza347
- · Replies 2 ·
What does coherent exactly mean?
- primarygun
- · Replies 3 ·
Magnetic field at center of finite solenoid vs infinite solenoid
- vaxopy
- · Replies 2 ·
Drawing free body diagrams for terminal velocity, trajectory, and friction
- jen333
- · Replies 10 ·
How to calculate work done by a force?
- janiexo
- · Replies 11 ·
How Do I Calculate Temperature and Pressure Ratios in an Adiabatic Engine Cycle?
- Varaia
- · Replies 2 ·
How much work is done when moving an object from x_1 to x_2?
- ~angel~
- · Replies 2 ·
Why do both clocks run slower in each reference frame?
- IntuitioN
- · Replies 6 ·
Why does flipping a spinning wheel make the platform rotate?
- UrbanXrisis
- · Replies 2 ·
Kinetic Friction: Seal Slides Down 30° Ramp to Pool
- stealth2k4
- · Replies 3 ·
Finding the number of Taylor terms given an error bound
- scan
- · Replies 2 ·
Solution to Fourier Transform of f(θ) = |sin(θ)|
- Stu165
- · Replies 6 ·
Rotational Speed with the Speed of Light
- BlasterV
- · Replies 2 ·
Frame of reference, Forces, and Angles
- PhysicsIdiot
- · Replies 8 ·
Determining Maximum Distance Using Center of Mass
- UrbanXrisis
- · Replies 6 ·
How can I easily build a cloud chamber for a physics project?
- coolkidssaywhat
- · Replies 2 ·
Forces on frame members ABCD and CEG with suspended 40 lb weight
- jd747
- · Replies 2 ·
How Does Refraction Affect Image Location in a Bi-Radial Mirror?
- Jacob87411
- · Replies 2 ·
Ladder resting against wall - find forces
- UrbanXrisis
- · Replies 6 ·
Solve Inductance for 550nm EM Waves w/17pF Capacitor
- z_sharp
- · Replies 3 ·
Rotation with a Pulley and Masses
- BlasterV
- · Replies 2 ·
Calculate the energy to accelerate and decelerate a leg
- johnnyb
- · Replies 4 ·
Is My Kinematic Solution for a Basketball Shot Correct?
- Chazz569
- · Replies 7 ·
Calculating Distance Between Ships at 3 PM
- radtad
- · Replies 2 ·
Calculating Friction on a Golf Ball in Rough Grass
- SwAnK
- · Replies 15 ·
Im not sure how to answer LOCUS question
- aisha
- · Replies 8 ·
Draw diagrams representing Locus
- aisha
- · Replies 2 ·
What Is the Locus of Vertex A in a Right Triangle with Hypotenuse 5 Units?
- aisha
- · Replies 3 ·
Which direction does the normal contact force act?
- Gughanath
- · Replies 2 ·
Why Do Dicarboxylic Acids Show a Less Pronounced Odd-Even Effect in pKa?
- DW_1983
- · Replies 2 ·
Proving a/sinα=b/sinβ from Triangle Sides and Angles
- Kamataat
- · Replies 2 ·
Parametric Equations of an ellipse
- ProBasket
- · Replies 9 ·
Could someone check my Electronics answers?
- Matt.D
- · Replies 2 ·
Why does single-slit diffraction create multiple bright bands?
- primarygun
- · Replies 2 ·
Project that is similar to the coupled pendulum
- Jonny
- · Replies 3 ·
Find the equation of the tangent to the curve
- footprints
- · Replies 4 ·
Finding mass of Al2Cl6 from 2.70g Al and 4.05g Cl2
- mugzieee
- · Replies 2 ·
How Does a Helium Balloon Achieve Buoyancy at 30 km Altitude?
- forcedphysics
- · Replies 2 ·
Can a student lift a weight with 40 kg muscle tension at 20 degrees?
- Woody11
- · Replies 2 ·
Equations of motion for ideal pendulum and cylinder with hanging mass
- joselyn
- · Replies 2 ·
Blocks being pulled by a string
- alexialight
- · Replies 4 ·
Solve Circular Orbit Puzzle: Calculate Mars Mass and Ratio of Satellite Speeds
- dearborne
- · Replies 2 ·
How to integrate the brachistochrone Euler-Lagrange equation
- elessar_telkontar
- · Replies 2 ·
Electrical Resistance of a brick
- rosh
- · Replies 2 ·
Abstract algebra problem concern
- vsage
- · Replies 4 ·