Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Volume of a cube moving relativisticly fast
- blueribbon
- · Replies 1 ·
Total internal reflection with different wavelengths in glass
- mr.miagi
- · Replies 2 ·
Electric Charges: Forces on A and C Explained
- yoleven
- · Replies 2 ·
How Many Orbits Must an Electron Complete in a Betatron to Gain 25MeV?
- raul_l
- · Replies 1 ·
Frictional force on a block sliding across a surface
- physicsbhelp
- · Replies 6 ·
What does slope indicate on period vs. amplitude, length, and mass graphs?
- boberth2o
- · Replies 14 ·
How Does Surface Impact Affect Force on Falling Putty?
- fitchguy316
- · Replies 1 ·
Calculating Temperature Rise in 100m Waterfall: Heat Energy Questions
- shakejuhn
- · Replies 4 ·
Find the mass of the our galaxy
- richman614
- · Replies 2 ·
Why a pen floats when released at the space station
- richman614
- · Replies 4 ·
Theory of special relativity (conceptual problems)
- Jbum
- · Replies 4 ·
How Does Spring Compression Affect Mass Velocity on a Frictionless Table?
- pdubb
- · Replies 1 ·
Does restitution coefficient depends on kinetic energy?
- SciencePF
- · Replies 2 ·
Pratt vs Howe Truss Bridge Building: Deciding for Physics Class
- DefyPhysics
- · Replies 4 ·
Solve Elastic Collision Problem: Proton and Alpha Particle Kinetics
- richman614
- · Replies 2 ·
Static friction on a 45-degree ramp with applied forces
- Imperil
- · Replies 5 ·
Solar radiation force on Earth and quantum uncertainty problems
- asdfTT123
- · Replies 2 ·
How to Derive the Inclination Angle of a Projected Particle?
- sara_87
- · Replies 2 ·
Wave pulse travel time on string with suspended masses and well depth from sound timing
- ukpclark
- · Replies 3 ·
Thermal physics problem on steel bar
- veemo
- · Replies 5 ·
Kinetic Friction, did I do this properly?
- Imperil
- · Replies 9 ·
Sphere rolling up incline and leaving projectile path
- Lavitz
- · Replies 6 ·
What Are the Frictional Forces at Different Inclines for a 2kg Block?
- alanon
- · Replies 1 ·
How far behind the pinhole should you place the viewing screen?
- yo_man
- · Replies 5 ·
Elastic Collision of two blocks
- chiurox
- · Replies 1 ·
What kind of expansion is this?
- HydroVapor
- · Replies 1 ·
Find Lambda_2 for Double Slit Interference Pattern
- yo_man
- · Replies 3 ·
Does amplitude affect angular frequency in spring-mass SHM?
- lovelylila
- · Replies 1 ·
What Points Determine Maximum and Minimum Velocity in Spring Oscillations?
- AnnieD
- · Replies 3 ·
Kinematics / Acceleration Problem
- bakoo
- · Replies 3 ·
Where Does the Moon's Gravitational Pull Overtake Earth's?
- Andy111
- · Replies 3 ·
Ramp inclined plane: which distance is input and which is output?
- aquamarine08
- · Replies 4 ·
Top speed of vehicle on a curved road
- linnus
- · Replies 3 ·
Paper bridge project with arch design and support questions
- scoles
- · Replies 4 ·
Application of Electric, magnetic and gravitational field in satellite
- llJuanMall
- · Replies 1 ·
Find the time required to complete each cycle
- sun
- · Replies 3 ·
Thermal energy of air in a room at standard conditions
- dals2002
- · Replies 6 ·
Radioactive Dating with Potassium Argon
- Badger
- · Replies 2 ·
Gravitation and Orbiting Satellites
- ThenewKid
- · Replies 5 ·
Solving Collisions in 2 Dimensions
- Shadow_C316
- · Replies 3 ·
Calculating Critical Angle and Single Color Angle in Optical-Quality Glass
- mr.miagi
- · Replies 2 ·
Trunk pushed up 20° incline at constant velocity with 211 N force
- anonymous820
- · Replies 8 ·
Why are letters reversed on some signs?
- rhxoehwhfh
- · Replies 3 ·
What Is the Speed of an Object Released from a Spring?
- Sucks@Physics
- · Replies 11 ·
How Is Net Energy Transferred in a Cyclic Thermodynamic Process?
- sun
- · Replies 1 ·
The Carnot Icemaker heat question
- xinlan
- · Replies 4 ·
Angular momentum of a particle problem
- yuki_meiseki
- · Replies 1 ·
How Do the Forces Affect the Duck's Displacement in 3.0 Seconds?
- shortay524
- · Replies 2 ·
Calculating Combined Mass Motion of Two Cars
- linnus
- · Replies 3 ·
Angular momentum of three particles of the same mass
- jperk980
- · Replies 14 ·
Finding coefficient of static friction from critical incline angle
- anonymous820
- · Replies 13 ·
Pin joint forces and cable tension for angled beam supporting weight
- tachu101
- · Replies 13 ·
Average Force Formula - Solving for Force
- wyclefchick
- · Replies 6 ·
Momentum Problem on Motion sensor
- susie__
- · Replies 1 ·
How Does Potential Energy Influence Force and Motion in Physics Experiments?
- susie__
- · Replies 1 ·
Doubt from a beginner
- svigneshkumars
- · Replies 3 ·
Max height and side lengths before tipping on a 24-degree incline
- tachu101
- · Replies 1 ·
Merry-go-round angular speed physics
- beocom6000yello
- · Replies 2 ·
How will a yo-yo on a horizontal table move when a force is applied at its edge?
- jaderberg
- · Replies 3 ·
Golf ball launcher to hit one of 6 targets over 50 cm barrier
- byershockey
- · Replies 4 ·
Projectile Motion: Angle & Distance of a Baseball Leaving a Bat at 50 m/s
- stevie_char99
- · Replies 1 ·
Lawn mower pushed at 60 degrees with friction
- stevie_char99
- · Replies 1 ·
How Does Electromagnetic Theory Explain Forces in a Moving Rod?
- Fenter
- · Replies 1 ·
Is Torque Equal on All Axes When a Rigid Body's Net Force Is Zero?
- miss photon
- · Replies 1 ·
How Do Astronauts Calculate Gravity on Planet X Using Standing Waves?
- momogiri
- · Replies 2 ·
Comparison of sound waves in air and underwater
- slakedlime
- · Replies 7 ·
Bullet recoil: why does momentum give wrong stopping distance?
- domagoj412
- · Replies 3 ·
What happens to the water level in the container?
- biomajor009
- · Replies 1 ·
How Much Work Does It Take to Push a Sled Up a Snowy Hill?
- cmarte01
- · Replies 1 ·
Four photon energy and photoelectric effect problems
- SharpTJ
- · Replies 10 ·
What is the lowest-frequency standing wave
- neoking77
- · Replies 2 ·
How Do You Determine Sound Intensity and Speed of an Enemy Submarine?
- biomajor009
- · Replies 1 ·
Why is acceleration v(dv/dx) when force depends on position?
- nowits
- · Replies 7 ·
Dynamics Question: Calculate Acceleration of Buckets
- Electron17
- · Replies 1 ·
How Does Water Pressure Affect a Submarine at Various Depths?
- biomajor009
- · Replies 1 ·
Why Does a Book on a Table Have Two Forces Acting on It?
- ksinelli
- · Replies 16 ·
Projectile Motion maximum height
- salman213
- · Replies 12 ·
Need help understanding entropy
- maos
- · Replies 1 ·
Solving for m in T=2π√(m/k)
- Sucks@Physics
- · Replies 3 ·
What is the functionality of this Op-Amp circuit?
- bengaltiger14
- · Replies 6 ·
Conservation of Angular Momentum of Ball
- curly_ebhc
- · Replies 4 ·
Eight projectile motion and orbital speed problems
- PhysicsHelpPlz
- · Replies 4 ·
Solve Voltage and Current Problem in DC Circuit
- slakedlime
- · Replies 25 ·
Tricky Tipping Problem; 11 sided figure
- tachu101
- · Replies 1 ·
Need Check On Orbital Satellite Problem
- tachu101
- · Replies 7 ·
Period and maximum speed of vibrating atoms in a solid
- Sucks@Physics
- · Replies 4 ·
Spring Potential Energy Problem
- meganw
- · Replies 2 ·
How Do You Calculate the Oscillation Frequency of an Engine Block on a Cable?
- Rubidium
- · Replies 1 ·
Calculating Potential Energy of Buoyant Force: Understanding Density and Depth
- clipperdude21
- · Replies 5 ·
How can I calculate the centripetal acceleration in nonuniform circular motion?
- Gear300
- · Replies 3 ·
How to solve for intensity in the decibel formula
- Sucks@Physics
- · Replies 6 ·
Lawn mower pushed at 43° angle with constant speed
- NegaChin
- · Replies 3 ·
Two carts with masses of 8.0 kg and 1.8 kg, respectively, move on a friction
- lettertwelve
- · Replies 2 ·
What is the binding energy of positronium compared to hydrogen?
- drewhart
- · Replies 1 ·
AP Problem - Elastic Collision at an Angle
- meganw
- · Replies 6 ·
How Does Terminal Velocity Arise in Fluid Dynamics?
- Gear300
- · Replies 3 ·
Rotation of satellite in geosynchronous orbit
- ~christina~
- · Replies 19 ·
Density calculation for a cork (less dense than water)
- ~christina~
- · Replies 2 ·
Is the horizontal component of projectile motion accelerated?
- physicsbhelp
- · Replies 5 ·
Can gamma spectroscopy measure atomic number from backscattering peaks?
- indigojoker
- · Replies 13 ·