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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Speed of a Rocket far from Earth
- PhysicsMark
- · Replies 2 ·
Force needed to move charge in electric field
- um0123
- · Replies 7 ·
What is the acceleration due to gravity on Planet Plutnik?
- lovemake1
- · Replies 2 ·
How Does a Hawk's Acceleration Change When Speed Increases in Circular Motion?
- geegeet
- · Replies 3 ·
Momentum and Energy: Find Maximum Energy Stored in Bumper
- zhuyilun
- · Replies 3 ·
Image formation and magnification for an object at 2f from a diverging lens
- Jfhebb
- · Replies 1 ·
Rotation and translation (of life importance)
- FermatPell
- · Replies 1 ·
Calculating Entropy Change in a System at Different Temperatures
- fluidistic
- · Replies 5 ·
Newtons law question (Baseketball player)
- lovemake1
- · Replies 6 ·
What is the moment of inertia of the particle at the end of the meter stick?
- CompEguy
- · Replies 2 ·
Mechanical Energy of Amonia Molecule
- Shadow503
- · Replies 2 ·
Speed of seats suspended from rotating platform at 37.3 degrees
- wmrunner24
- · Replies 7 ·
Newton Question #2 (centripetal motion)
- lovemake1
- · Replies 2 ·
Energy conversion when a ball bearing compresses a spring
- qazxsw11111
- · Replies 1 ·
A little problem on dimensional analysis
- jeremy22511
- · Replies 2 ·
Block sliding down ramp with friction: finding landing distance
- ova5676
- · Replies 3 ·
Work and Force. Double Integration?
- Idoke
- · Replies 5 ·
Calculating Total Energy of Positron and Electron in Quantum Physics Problem
- aurao2003
- · Replies 8 ·
Calculating Inductance for Resonant LC Circuit
- tnutty
- · Replies 3 ·
Problem involving del operator in vector analysis
- Sudip Maity
- · Replies 1 ·
What Is the Net Gravitational Force on One Mass in a Square Configuration?
- godtripp
- · Replies 3 ·
Why is the waveguide equation 2d*sin(theta) = m*lambda with phase shift pi?
- quietrain
- · Replies 19 ·
What Initial Velocity Does a Rocket Need to Reach 5000m?
- lovemake1
- · Replies 2 ·
Solving the Billiard Ball Problem: Finding Work Lost to Friction
- aldee11
- · Replies 5 ·
AP Physics B free response practice questions
- Sudhakar_alla
- · Replies 1 ·
Deriving equaions for harmonic oscillations
- frozenguy
- · Replies 7 ·
What is the diameter of the hole for a flow rate of 4.17x10-5 m3/s?
- Alu
- · Replies 1 ·
Magnitude of force on a Dust Particle
- crazuiee
- · Replies 1 ·
Angular velocity of a machine problem
- vm310
- · Replies 2 ·
Dispersion by diffraction grating
- Liketothink
- · Replies 4 ·
Finding the period of sinusoidal wave in rope
- insertnamehere
- · Replies 6 ·
The principles of kinematics on an airport runway.
- rockysmommy
- · Replies 3 ·
What Is the Speed of Water at the Top of Della Falls?
- tamir102
- · Replies 4 ·
Can a Submarine Enter Undetected by a Harbor Loop?
- Gogeta007
- · Replies 7 ·
Calculating Kinetic Energy of a Ball at Different Points
- Alu
- · Replies 4 ·
Height of oil and water in a cylindrical container with pressure difference
- taustin52
- · Replies 8 ·
Entropy of gas at constant pressure and volume
- ricof
- · Replies 3 ·
Finding the reaction force at a pivot in rigid body equilibrium
- aldee11
- · Replies 6 ·
Looking for visual models or discriptions of bullet vs. shape charge
- Leg86
- · Replies 2 ·
Question on total moment of inertia
- chess10771
- · Replies 1 ·
Force on stuck car when rope pulls at an angle
- sticky123
- · Replies 1 ·
Calculating Torque on a Trap Door: Question and Equations
- chess10771
- · Replies 2 ·
Rotational inertia of child's and adult bowling balls
- chess10771
- · Replies 1 ·
Finding New Rate of Rotation for a Student on a Rotating Platform with Dumbbells
- chess10771
- · Replies 1 ·
[Work and Energy] Work positive or negative?
- hiuting
- · Replies 3 ·
Mass on an inclined plane with friction as a function of distance
- klg.amit
- · Replies 10 ·
An angled photon (special relativity)
- philnow
- · Replies 5 ·
Circular Motion and Forces: Net Force on Sliding Package?
- Greywolfe1982
- · Replies 4 ·
Maximum Height Reached by Slingshot-Launched Apple?
- hmlaa
- · Replies 5 ·
Goddard development of rocketry science?
- doc.madani
- · Replies 4 ·
Why is salt water a conductor if ions can't pass through the body?
- thedy
- · Replies 3 ·
How Do You Calculate the Maxwell Stress Tensor Between Cylindrical Shells?
- tomfrank
- · Replies 1 ·
How Is Air Pressure Calculated in a Crushed Can Experiment?
- bleedblue1234
- · Replies 1 ·
Bullet embeds in baseball, find height after collision
- cyspope
- · Replies 3 ·
Why are nodes the areas of greatest pressure change in stationary waves?
- qazxsw11111
- · Replies 3 ·
How Does Momentum Conservation Determine Spring Compression in a Collision?
- ntox101
- · Replies 4 ·
Find Position Vector of Point for Half Torque Opposite Direction
- bingkei
- · Replies 1 ·
Inelastic Collision and Conservation of Momentum
- mexicandeligh
- · Replies 1 ·
What Is the Maximum Force to Apply on a Block Without Slipping?
- EV33
- · Replies 6 ·
What equation would I use for this?
- physicsgirl11
- · Replies 1 ·
Non-elastic collision answer confirmation
- ntox101
- · Replies 1 ·
Can you tell me where and why am I going wrong?
- stanton
- · Replies 1 ·
How Do Coefficients of Restitution Affect Collision Outcomes?
- madmax2006
- · Replies 1 ·
How Does Faraday's Law Apply to a Solenoid with an Oscillating Current?
- llauren84
- · Replies 1 ·
Ideal gas cycle with heat exchange and entropy change
- fluidistic
- · Replies 6 ·
Impulse and Force-Time Graph Problem
- jmm
- · Replies 2 ·
What Happens to Parallel Rays in Compound Lens and Mirror Setups?
- mihajovics
- · Replies 1 ·
Motion of an electron in a Magentic Field
- Wiseman101
- · Replies 2 ·
How Far Does the Ramp Move When a Crate Slides Down It?
- nocturnus
- · Replies 19 ·
Where Can I Find Practice Questions for Introductory Physics?
- Peachhow
- · Replies 1 ·
Angular Momentum & Velocity: Solving Homework Q
- jayced
- · Replies 5 ·
How Is Initial Velocity Calculated in Kinetic Friction Problems?
- IAmSparticus
- · Replies 12 ·
IS IT POSSIBLE TO SOLVE FOR m2 from a(m1+m2) = (m2g-m1g)?
- tigerwoods99
- · Replies 4 ·
Initial Velocity Given Distance, Angle, and Initial Height
- Mr.Serious
- · Replies 1 ·
Do double slits diffract different wavelengths to different directions?
- the riddick25
- · Replies 4 ·
How Does Distance Affect Gravitational Force?
- Physix1233
- · Replies 1 ·
Inelastic collision and kinetic energy lost.
- IAmSparticus
- · Replies 9 ·
Amplitude?5. Harmonic Motion with a Horizontal Spring
- adhoward24
- · Replies 2 ·
What are some of the physics aspects of a car.
- lauralovesyou
- · Replies 3 ·
Calculating Gauge Pressure and Water Flow in a Multi-Floor House
- qwert13
- · Replies 4 ·
Work and power graphs for falling 5 kg stone over 15 m
- leftywefty
- · Replies 1 ·
Kicking a Ball Upwards with force x and mass y
- Gui
- · Replies 5 ·
Volume Expansion Thermodynamics Question
- AngelMizukage
- · Replies 1 ·
Calc Push Force Req'd to Move 13g Steel Block on Steel Table
- bjbaldwi
- · Replies 11 ·
Rearranging Equations for Centripetal Force and Mass of Orbiting Objects
- Sharr-zeor
- · Replies 6 ·
Why is Half a Wavelength the First Harmonic in Standing Wave Harmonics?
- elliottmarter
- · Replies 2 ·
Using a pedulum to crack eggshells?
- molly_liz
- · Replies 1 ·
How Fast Must a Rocket Travel to Witness Two Events 2400 km Apart?
- Laxman2974
- · Replies 4 ·
Which types of elasticity are involved?
- azure kitsune
- · Replies 3 ·
Finding pump pressure with Bernoulli's equation for water through a nozzle
- lilmul123
- · Replies 2 ·
Force on the top screw in a hanging basket scenario
- Basketcase
- · Replies 4 ·
Grinding wheel: angular velocity, centripetal force, and particle ejection
- songoku
- · Replies 2 ·
Speed before impact of an object falling down a slope.
- DAN393
- · Replies 1 ·
What Is the Speed of a Cannonball at Its Maximum Height?
- Chaalie
- · Replies 3 ·
What Is the Radius of Gyration of a Rectangular Frame About Its Center?
- madmax2006
- · Replies 1 ·
How Do Angles Affect Tension and Equilibrium in a Strut System?
- Bryon
- · Replies 3 ·
Solving Mechanics Problem: Forces, Eqns of Motion, Reactions
- henryc09
- · Replies 5 ·
Angular momentum problem - what am I doing wrong?
- henryc09
- · Replies 1 ·
What Determines the Coefficient of Static Friction in Oscillating Blocks?
- Havok104
- · Replies 1 ·
Why is horizontal escape velocity less ?
- victoriafello
- · Replies 3 ·