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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Calculating the Force on a Parachuter Falling at 25 ms-1
- songoku
- · Replies 2 ·
Which way does an electron curve in a magnetic field into the page?
- S1CkFiSh
- · Replies 4 ·
Does Adjusting Oscilloscope Controls Alter the Input Signal?
- Skye77
- · Replies 1 ·
Tension - two objects and a string
- phish
- · Replies 1 ·
Calculating gauge pressure from water column height
- Landlocked26
- · Replies 1 ·
What is the maximum amplitude of oscillation of the system
- songoku
- · Replies 4 ·
Finding capacitance from RC circuit time constant with 1 F capacitor and 75 Ω resistor
- Raziel2701
- · Replies 1 ·
Spring with friction (nonconservative force)?
- jeneekim
- · Replies 4 ·
Calculating Water Resistance for a Rowboat with Known Forces
- uzboi
- · Replies 2 ·
Calculating Work Done by Sled Dogs: A Frustrating Challenge!
- kcrox
- · Replies 2 ·
Finding Center of Mass - Plate with hole
- Bryon
- · Replies 4 ·
Man pulling himself up by rope over pulley at constant velocity
- sjeddie
- · Replies 9 ·
How much power is lost in heating the wires of a power line
- gamesandmore
- · Replies 6 ·
Calculating work done by E field/voltage
- xcvxcvvc
- · Replies 7 ·
How does current split at a junction in a circuit with parallel resistors?
- thaer_dude
- · Replies 3 ·
How Does a Clay Ball Impact the Rotation Angle of a Rod?
- shannon12
- · Replies 3 ·
How Do I Find the Acceleration at the Intersection?
- Raimuna
- · Replies 1 ·
Friction, kinematics, and elastic and inelastic collisions
- JJBrian
- · Replies 1 ·
Solving a Robot Probe Homework Problem on Mars
- inedhelpinphy
- · Replies 4 ·
Finding Unknowns in Circuits: Using Loop Rules and Substitution
- queenspublic
- · Replies 4 ·
Ball rolling down an incline: How to calculate final velocity?
- jti3066
- · Replies 2 ·
Do Adults and Children Swing at the Same Frequency?
- SAT2400
- · Replies 4 ·
Damped simple harmonic motion question
- endusto
- · Replies 4 ·
What was wrong with my calculation?
- stanton
- · Replies 2 ·
Elastic collision with no info on object 1
- chris097
- · Replies 5 ·
Horizontal Force Needed to Slide 160N Crate with Friction Coefficient of .25
- wwangsta
- · Replies 2 ·
Find Voltage VX in the Given Network Circuit
- salman_chohan
- · Replies 6 ·
Forces involved in circular motion
- scottnobles
- · Replies 1 ·
What is the reaction force to tension in circular motion?
- scottnobles
- · Replies 1 ·
Why Must the String Be Parallel to the Surface in Friction Experiments?
- munchy35
- · Replies 1 ·
Finding mass and center of gravity of nonuniform meterstick
- garfiegrl
- · Replies 19 ·
Is It Zero? Tangential and Centripetal Acceleration on a Rotating Disk
- bricker9236
- · Replies 1 ·
What is the deceleration of the vehicle?
- Kev1n
- · Replies 4 ·
Maximum Compression of Spring on Ramp
- bricker9236
- · Replies 2 ·
Caculating velocity on a different points on a rim of a wheel
- mmoadi
- · Replies 21 ·
How Is Work Calculated for a Constantly Moving Elevator?
- pookisantoki
- · Replies 1 ·
What is the potential energy of a board placed on the edge of a roof?
- lilaznjewel
- · Replies 1 ·
Tension, very simple , but confusing
- kylelomba8
- · Replies 3 ·
How High Does the Crate Reach on the Lunar Crater's Inclined Plane?
- Leesh09
- · Replies 1 ·
Max speed of small mass in trebuchet with stiff rod
- semc
- · Replies 1 ·
Calculating Acceleration in a Pulley System with Inclined Boxes
- zaga04
- · Replies 3 ·
Minimising the perimeter of a tunnel with a fixed area
- henryc09
- · Replies 1 ·
Ball thrown from 35m roof lands 29m away, max height 12m above launch
- bricker9236
- · Replies 3 ·
How Does Wind Affect Airplane Groundspeed and Flight Angle?
- bricker9236
- · Replies 1 ·
Finding the change in length of a nylon string
- tjohn101
- · Replies 10 ·
Why is electric potential energy U defined negative in this example?
- The_Lobster
- · Replies 5 ·
Conservation of Momentum in an Explosion Problem
- indietro
- · Replies 9 ·
Momentum and impulse of a ball dropped
- indietro
- · Replies 4 ·
Calculating upthrust on a solid object
- azsx11
- · Replies 7 ·
Reactions at ball and socket joint and cord tensions in pipe assembly
- nrp88
- · Replies 2 ·
What is the coefficient of fluid resistance for water?
- Esran
- · Replies 1 ·
Is the current density larger, smaller, or the same?
- tag16
- · Replies 5 ·
Why can √(2gh) be pulled out of the surface integral?
- Saladsamurai
- · Replies 2 ·
Why Does OH- Have a Negative Standard Molar Entropy?
- Trowa
- · Replies 4 ·
Bullet fired into rotating cylinder, find angular velocity
- Sumbhajee
- · Replies 1 ·
Direction of induced current when closing a switch in a larger coil
- Neophyte7
- · Replies 1 ·
What is the Potential Energy of a Twisted Spiral Spring?
- Sumbhajee
- · Replies 2 ·
Solving Forces on an Inclined Ice Block: 6.2 kg, 17 degrees, u = 0.030
- matt1687
- · Replies 3 ·
How Do You Derive the Torsional Pendulum Period Formula?
- Melawrghk
- · Replies 3 ·
Block, Ramp, Friction, and Spring
- r34racer01
- · Replies 5 ·
Calculate CM Speed of Rod on Compressed Spring
- Sumbhajee
- · Replies 1 ·
Finding Horizontal Distance in Projectile Motion
- aliceeelu
- · Replies 1 ·
Finding angular acceleration when initial angular velocity is unknown
- Warmacblu
- · Replies 10 ·
Work done on a particle by a nonconservative force
- Pinkk
- · Replies 6 ·
How Much Energy Is Lost to Friction When a Mass Pulls Down a Spool of Wire?
- Sumbhajee
- · Replies 1 ·
Modeling potential energy equations of a balloon bungee jumper
- Pinkk
- · Replies 7 ·
Thermodynamics- Refrigerator Problem
- jessedevin
- · Replies 1 ·
Torque Of Lever Arm in 1st/2nd Class Levers
- EnquiringMind
- · Replies 1 ·
Timed freefall + sound to respond from cave
- carbunkulous
- · Replies 5 ·
Solving Two Barges moving in the Same Direction
- patelkey
- · Replies 3 ·
Δd ball / Force Applied Ball - Completely stumped.
- Monocerotis
- · Replies 3 ·
Solving Basic Physics Problems: A Dive off a 200m Cliff in Mexico
- highcontrast
- · Replies 3 ·
Collision position after elastic collision and wall bounce
- patelkey
- · Replies 4 ·
Finding the vertical force to tip a coffee cup
- nrp88
- · Replies 2 ·
How Is the Mass of a Block Determined When It Compresses a Spring?
- dorian_stokes
- · Replies 1 ·
Tension of two strings with centripetal acceleration?
- Elenor
- · Replies 5 ·
Solving Physics Problems: Circus Performer Falling into a Safety Net
- sonutulsiani
- · Replies 4 ·
Symmetry in projectile motion and velocity graphs
- NRP
- · Replies 11 ·
Inelastic Collisions: Solving for Spring Displacement
- patelkey
- · Replies 2 ·
Proton Bombardment Work and Energy
- am13
- · Replies 5 ·
Kinetics after car left the cliff.
- dorian_stokes
- · Replies 2 ·
Projectile Motion Arrow Problem
- davetheant
- · Replies 1 ·
Calculating the Coefficient of Static Friction
- Sachin_Sharma
- · Replies 2 ·
How do I find tangential acceleration?
- Loppyfoot
- · Replies 1 ·
How Does Gauss's Law Apply to Nested Spherical Shells with Charges?
- stroperica
- · Replies 2 ·
Mass of a planet using a satellite
- cruisx
- · Replies 5 ·
Laws of motion/static friction problem
- Leesh09
- · Replies 1 ·
How Does Wind Affect the Maximum Height of a Pendulum on Venus?
- Leesh09
- · Replies 1 ·
What are the energy equations for solving a crate sliding on an inclined plane?
- Leesh09
- · Replies 1 ·
Should a Space Explorer Push or Kick a Floating Rock?
- Unity
- · Replies 2 ·
Finding tension on multiple points.
- squalami
- · Replies 1 ·
Conservative force, kinetic energy
- nothingatall
- · Replies 1 ·
How much work is done on the skier in the first 8.9 seconds of descent?
- The Merf
- · Replies 12 ·
Time needed to reduce charge of a capacitor
- catan
- · Replies 2 ·
Force of Earth's gravity on a spacecraft
- fattydq
- · Replies 18 ·
Screwdriver bounce height after losing 95% of kinetic energy
- irish_bhoy08
- · Replies 2 ·
Work done climbing a flight of stairs.
- fattydq
- · Replies 6 ·
Image location and magnification for object closer than focal length to concave mirror
- Jonah14
- · Replies 1 ·
Caculating velocity on a different points on a rim of a wheel- AGAIN
- mmoadi
- · Replies 12 ·
Find Speed of Gayle & Brother on Sled After Descent from Hill
- VelvetRebel
- · Replies 2 ·