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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What Angle and Timing Adjustments Allow Two Thrown Snowballs to Collide?
- svtec
- · Replies 4 ·
Trouble with Proof of Optimal Launch Angle
- stoffer
- · Replies 2 ·
How Far Does the Spring Compress When a 20 kg Mass Slides Down an Incline?
- accc
- · Replies 4 ·
Kinetic energy of two colliding asteroids from gravitational potential energy
- rdn98
- · Replies 2 ·
Newton's Laws Questions: Understanding Deceleration and Resistance
- Auron87
- · Replies 2 ·
Downward acceleration greater than g
- mmfoley
- · Replies 5 ·
Calculating Earth's Greenhouse Gas Absorption
- Brad_Ad23
- · Replies 4 ·
Solving ε1jk without summation notation
- jlmac2001
- · Replies 6 ·
Force in connected tubes with unequal water heights
- Rockdog
- · Replies 3 ·
Permutations of n taken r at a time
- PiRsq
- · Replies 5 ·
How Does a Boat's Velocity Change with Current Direction and Speed?
- nocturnalwun
- · Replies 2 ·
Adding three forces on a stuck horse and finding tension in connected masses
- golf
- · Replies 4 ·
Why Does D'Inverno Equate Lbarg in the Palatini Approach?
- maddy
- · Replies 1 ·
How Do You Calculate the Original Volume of Gas After Pressure Change?
- hecate
- · Replies 2 ·
Finding the Zero Net Electric Field Point for Two Point Charges on the x-axis
- keeganisafish
- · Replies 4 ·
How Does a Tape Measure Act as a Spring in a DIY Land Rover?
- paigegail
- · Replies 1 ·
Velocity Time graph question [i'm not getting anywhere]
- Acidvoodoo
- · Replies 4 ·
Calculating Electric Potential in A Uniform Electric Field
- Moxin
- · Replies 4 ·
Find Length of Curve: y=x^2+2 from 0-3
- tandoorichicken
- · Replies 3 ·
How to Calculate Gravitational Force in Orbital and Spherical Systems?
- ACLerok
- · Replies 2 ·
How do mass and weight change from Earth's surface to the center?
- mmfoley
- · Replies 3 ·
Finding where a ball lands on a slope given initial velocity
- jjiimmyy101
- · Replies 7 ·
Does the oil drop experiment prove quantization of charge?
- Inquiring_Mike
- · Replies 2 ·
Why are school bus passengers jerked backward when it stops?
- shayes928
- · Replies 2 ·
How Many Electrons Pass and What Are the Costs of Electrical Appliances?
- mustang
- · Replies 2 ·
Lewis structure, hybridization, shape, and polarity of IO₃F₂
- fangtu
- · Replies 2 ·
Thermal Expansion of a hollow aluminum cylinder
- Sherry
- · Replies 7 ·
What is this element, carbon, hydrogen, oxyden or aluminum?
- Rival
- · Replies 13 ·
Satellite orbital energy and falling block on a wheel
- tandoorichicken
- · Replies 2 ·
MIR space station problem from Armageddon physics assignment
- killjoy
- · Replies 4 ·
Need help with electromagnetism problems?
- Poobel
- · Replies 4 ·
Calculating Net Force on a Third Charge Using Coloumb's Law
- Cyto
- · Replies 12 ·
Area bounded by the y-axis and the curve x = y² - y³
- tandoorichicken
- · Replies 2 ·
Does water level rise when a boat in a canal lock sinks?
- geoffroy6885
- · Replies 6 ·
Rock on vine breaks at 60 degrees with vertical, how far away can deer stand safely?
- MikeH
- · Replies 15 ·
Resistance and current problems
- mustang
- · Replies 2 ·
Proton in Magnetic field - am I correct?
- Poobel
- · Replies 2 ·
Exam review: don't remember how to do this
- Earth_kissed
- · Replies 2 ·
How would it affect our daily lives if Planck´s constant were different?
- nicolas
- · Replies 1 ·
Understanding Pendulum Motion and Its Relationship to Gravity and Temperature
- nation_unknown
- · Replies 4 ·
How high could a sprinter jump if all kinetic energy converted to height?
- celect
- · Replies 4 ·
Verifying a first-order linear differential equation solution
- wubie
- · Replies 4 ·
Why is a Shorter Spring Stiffer Than a Longer One?
- sweetrose
- · Replies 2 ·
Solving dy/dx = y/x + 1/x²
- wubie
- · Replies 7 ·
Finding tensions in a balanced system with weights and strings
- Johnny Leong
- · Replies 7 ·
Calculating Total Weight of a Truck with Uneven Loads
- tandoorichicken
- · Replies 2 ·
Finding the third cable force AE in a three-cable beam system
- formulajoe
- · Replies 11 ·
How to Calculate Damped Oscillation Frequency and Amplitude Change?
- Klion
- · Replies 3 ·
How Does Wheel Size and Lever Mechanics Enhance Mousetrap Vehicle Performance?
- adeel
- · Replies 2 ·
Will a falling monkey be hit by a bullet from 20 m away?
- luther_paul
- · Replies 5 ·
How Long Did the 23m Jump Last?
- svtec
- · Replies 2 ·
What should I include in a mousetrap car project paper?
- nychic3000
- · Replies 2 ·
Adiabatic compression to ignite gas from 1000°C to 27°C
- Skyblitz
- · Replies 5 ·
Why Do Signs Change in Fourier Series Coefficients Calculation?
- teo
- · Replies 2 ·
Motorcycle canyon jump: why does the vertical equation equal zero?
- amyalex
- · Replies 5 ·
Coefficient of Friction for 25° Banked Curve
- MikeH
- · Replies 8 ·
When do reflection, refraction, and diffraction occur?
- Ohm
- · Replies 2 ·
Way to remember the difference between energy and power?
- celect
- · Replies 2 ·
How Much Energy Is Required to Elevate a Satellite to 1800 km Altitude?
- rdn98
- · Replies 2 ·
What Is the Second Derivative of f(x^3) Given Complex Function Relationships?
- tandoorichicken
- · Replies 2 ·
Kinematics of a thrown rock. Calculate speed
- DR33
- · Replies 26 ·
Finding Flow Speed in Smaller Section: A Puzzling Problem
- MichaelC
- · Replies 3 ·
Complex numbers. Imaginary part
- fannemel
- · Replies 9 ·
How Does Changing Arm Position Affect a Spinning Professor's Kinetic Energy?
- tandoorichicken
- · Replies 2 ·
Understanding Shell Electrons and Electron Configuration in Krypton
- cricket
- · Replies 2 ·
Potential Energy of 1000 kg Car at 1m Height
- celect
- · Replies 2 ·
Finding velocity from position function using derivatives
- NanoTech
- · Replies 2 ·
The Number Of Proper Subsets is 2^n - 1
- wubie
- · Replies 9 ·
How Fast Does a Man's Shadow Change as He Walks Towards a Street Light?
- tandoorichicken
- · Replies 2 ·
Find Largest Rectangle on y=12-x^2
- tandoorichicken
- · Replies 2 ·
Particle motion with a(t)=4cos(2t), v(0)=1, x(0)=0
- Blade
- · Replies 2 ·
What is the structure of glass and its properties in automobiles?
- pinky
- · Replies 2 ·
Gravitation: Force inside a sphere
- Rockdog
- · Replies 4 ·
Motor efficiency lifting 5000kg load 13m in 20s
- curlydafatboy
- · Replies 2 ·
Electricity Circuit Analysis: Finding Voltage, Current, and Resistance Values
- Genesis
- · Replies 2 ·
Help with calculus final review problems
- hodeez
- · Replies 31 ·
Excess electrons and net charge
- eku_girl83
- · Replies 3 ·
Calculating Electron Energy from Potential Difference
- soso
- · Replies 9 ·
How to Calculate Boat Velocity Relative to Shore in River Flow?
- nocturnalwun
- · Replies 2 ·
Should a mousetrap car have a long or short lever arm for distance?
- decibel
- · Replies 3 ·
Writing degree sign on the microsoft word?
- hecate
- · Replies 3 ·
How Do You Determine Horizontal Asymptotes in Functions?
- roy5995
- · Replies 2 ·
Acceleration and Rotational Kinetic Energy in a Rigidly Mounted Cylinder System
- tandoorichicken
- · Replies 2 ·
How Does Friction Affect the Work Done When Dragging a Crate?
- badboyben03
- · Replies 2 ·
Which Curve Intersects Every Curve of the Family y = 1/x + k at Right Angles?
- tandoorichicken
- · Replies 2 ·
Gravitation, neutron starlooks simple
- rdn98
- · Replies 4 ·
Integrating kinematic equations when acceleration depends on position
- jjiimmyy101
- · Replies 7 ·
Solve Word Problem: Rancher Divides Herds Between Sons
- RyokoTenchi
- · Replies 3 ·
Gravitation: Rocket's Velocity
- Juntao
- · Replies 4 ·
What Are the Answers to These Physics Questions?
- dragun
- · Replies 2 ·
Build a Mousetrap Car Using Only a Spring!
- Morgan
- · Replies 2 ·
How Can I Calculate Deceleration and Depth for an Object Falling into Water?
- lalapsambel
- · Replies 2 ·
Shared and unshared electron pairs in ammonia and CH2Cl2
- gotzmlk
- · Replies 2 ·
Definition of derivative integration problem
- tandoorichicken
- · Replies 4 ·
How Do You Calculate Acceleration from a Position Function in Kinematics?
- jjiimmyy101
- · Replies 6 ·
How to Prove Vector Ratios BE:EF = 1:2 and CD:DF = 1:1?
- Warr
- · Replies 7 ·
Testing thermistor and calibration - sensors
- meawinner
- · Replies 2 ·
Understand Force Fields: Store and Release Energy?
- eddo
- · Replies 2 ·
Electric Field at the Center of a Square of Point Charges
- Moxin
- · Replies 4 ·