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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Sliding Block Attached to a Spring
- AltruistKnight
- · Replies 1 ·
Banked curve with friction, but no angle
- puzzledup
- · Replies 2 ·
Solve Time to Pull Illinois Jones from Pit
- frownifdown
- · Replies 1 ·
What is the Tension in a Rope with Unequal Bucket Weights?
- frownifdown
- · Replies 3 ·
Total charge in a circuit/determining parallel or series
- PhizKid
- · Replies 7 ·
Statics Problem, two disks in equilibrium
- leomclaughlin
- · Replies 9 ·
What Is the Velocity of an Inclined Plane as a Block Slides Down?
- varunKanpur
- · Replies 2 ·
Work done by motor lifting 500N load and lift 10m in 40s
- CPURules
- · Replies 5 ·
Dynamics- acceleration of beam on rollers
- deevil_knievel
- · Replies 6 ·
When normal force isn't normal l
- Gersty
- · Replies 3 ·
John Taylor Classical Mechanics Chapter 5, Problem 29
- karmonkey98k
- · Replies 1 ·
Finding the final velocity using momentum and KE
- lonewolf219
- · Replies 9 ·
Circular Motion: Net Force and Direction
- Sylis
- · Replies 5 ·
Freefall prob that's been bugging me.
- Gersty
- · Replies 5 ·
Linear and Rotational Kinetic Energy
- woaini
- · Replies 4 ·
Understanding microscope resolution limit
- bfusco
- · Replies 2 ·
How Long Must the Rocket Fire to Accelerate the Space Platform?
- sph
- · Replies 9 ·
MCAT Physics: Find Rod Length After 20% Decrease in Pendulum Period
- caviar
- · Replies 4 ·
Work and kinetic energy for particle with time-dependent force
- Heisenburger
- · Replies 11 ·
How Did Weber and Gauss Use Magnetic Fields in Their 1833 Telegraph Experiment?
- rbighouse
- · Replies 1 ·
What Is the Speed of a Block Launched by a Compressed Spring?
- MAC5494
- · Replies 10 ·
What Speed Limits Apply on a Wet Banked Roadway?
- Wolvenmoon
- · Replies 4 ·
Diffraction - how does it actually work?
- bfusco
- · Replies 1 ·
Transformers Turn ratio versus Impedence ratio
- Hollumber
- · Replies 2 ·
Torque of Dipoles: Problem 4.5 (Griffiths)
- Tsunoyukami
- · Replies 2 ·
Finding Mass of Hanging Object with Multiple Ropes
- gray_
- · Replies 20 ·
What Determines the Force at the Bottom of a Circular Loop?
- darksyesider
- · Replies 7 ·
Will the scuba diver sink or float
- rmiller70015
- · Replies 5 ·
Calculating Bullet Speed in Momentum Problem
- ijd5000
- · Replies 2 ·
A cyclist exerts 80N of energy pedalling. How much Work is done?
- Daaniyaal
- · Replies 5 ·
Why is wire length infinite in the definition of the ampere?
- lionely
- · Replies 20 ·
What Angle Causes the Fishline to Break?
- oneplusone
- · Replies 6 ·
Calculating Satellite Aperture Radius
- k3r0
- · Replies 1 ·
Conservation of angular momentum (electromagnetism)
- Screwdriver
- · Replies 4 ·
Speed of 5 kg mass falling 1.5 m connected to 3 kg block via pulley
- oneplusone
- · Replies 5 ·
Finding Final Velocity of Skaters
- goldgirl778
- · Replies 1 ·
Are support reactions the same where members connect?
- princejan7
- · Replies 3 ·
What is the Force Constant k of a Spring?
- ImmaGrump
- · Replies 3 ·
What is the largest wavelength for maximum sound intensity?
- mert123
- · Replies 2 ·
What Is the Moment of Inertia About a Point One-Fourth the Length from One End?
- K.QMUL
- · Replies 3 ·
Pulley system with block and bucket: finding acceleration with added mass
- frownifdown
- · Replies 3 ·
What Is the Speed of a Spacecraft Near Mars?
- bibrahim6
- · Replies 11 ·
Mass Oscillations on Rotating Hoop
- gob0b
- · Replies 2 ·
How Do You Calculate the Radius of Planet Oceania?
- mnmakrets
- · Replies 4 ·
Why does water striking a window lose momentum at 32 m/s and then 1440 kg m/s²?
- PhysicsKid0123
- · Replies 7 ·
Rotational inertia formula giving wrong answer
- xtrubambinoxpr
- · Replies 14 ·
Calculating Gravitational Force at Different Distances from Earth's Center
- oMovements
- · Replies 6 ·
How Fast Was Car A When It Hit Car B?
- Reefy
- · Replies 8 ·
Block launched by compressed spring on frictionless surface
- nkentros7
- · Replies 14 ·
Kinetic energy and work done by gravity for projectile motion
- xx3dgxx
- · Replies 3 ·
Momentum where an object explodes into two peices
- h.bonnie94
- · Replies 1 ·
Finding coefficient of kinetic friction on a 30° ramp with known acceleration
- ughschool
- · Replies 40 ·
Why Does the Escape Velocity Decrease as Mass Increases in an Electric Field?
- kickthatbike
- · Replies 2 ·
What is the value of k in this equation?
- Alexandra7
- · Replies 9 ·
Velocity in Elastic Collision involving Center of Mass
- icesalmon
- · Replies 7 ·
Three dimensional collision with bowling ball and pin.
- unrulypanda
- · Replies 6 ·
Do you know of any questions regarding projectile and circular motion?
- Nikola_Tesla
- · Replies 1 ·
How Many Electrons Are Missing from the Suspended Plastic Sphere?
- STEMucator
- · Replies 3 ·
Do entropy and enthalpy changes depend on pressure?
- atomalptunga
- · Replies 2 ·
Calculating LEED Spot Angles on Si(001) Surface with 100eV Electron Beam
- jonesj314
- · Replies 1 ·
How to deduce Gauss' law from Gauss Divergence Law
- nenyan
- · Replies 2 ·
Electric Field in a Hemisphere
- Jshumate
- · Replies 8 ·
Calculating Absolute Gravity Using Relative Measurements for Scientists
- pvpkillerx
- · Replies 12 ·
Question on Work done by horse pulling a wagon.
- Daaniyaal
- · Replies 3 ·
Why does the lion have more kinetic energy after collision with the turtle?
- Dan350
- · Replies 5 ·
Chain Link Problem? [Tension Forces; Newton's Third Law]
- harujina
- · Replies 15 ·
Coefficient of Kinetic Friction on Inclined Plane? [FORCES]
- harujina
- · Replies 22 ·
Inelastic Collision Bullet/Block of Wood
- rmiller70015
- · Replies 8 ·
Electron emits a photon that emits an electron
- skate_nerd
- · Replies 9 ·
What are the formulas for calculating current and voltage in a divider circuit?
- sevag00
- · Replies 4 ·
How to use coefficient of friction for connected boxes with applied force
- frownifdown
- · Replies 3 ·
Error analysis for projectile motion with 40° launch angle
- slasakai
- · Replies 3 ·
Calculating Acceleration in a Block and Tackle System
- frownifdown
- · Replies 5 ·
How Do You Calculate the Total Moment of Forces on a Plane?
- go2255
- · Replies 1 ·
How Do You Solve the Moving Pulley Problem with a 100 kg Sack for Equilibrium?
- Jay9313
- · Replies 3 ·
Net force of a crate with four applied forces
- ughschool
- · Replies 4 ·
How Does Bernoulli's Principle Apply to Fluid Flow in Pipes?
- brv
- · Replies 1 ·
Moment of inertia of rod and disc system about fixed point
- coldblood
- · Replies 7 ·
P = VI = (281V)(3.75A) = 1054 W
- Tautomer22
- · Replies 6 ·
Why Is Work Equal to Zero When Forces Are Perpendicular?
- xtrubambinoxpr
- · Replies 3 ·
Mass needed to pull 0.521 kg cart 1 meter in 2 seconds
- GoonMcFly
- · Replies 3 ·
Speed of sound in air from density and bulk modulus
- brv
- · Replies 1 ·
What is the Coefficient of Static Friction for Two Tied Objects?
- oMovements
- · Replies 8 ·
What is the Magnitude of the Third Force in a Three-Force System?
- purplecows
- · Replies 3 ·
Photoelectric effect and Planck's Constant
- Gringema
- · Replies 8 ·
What Is the Total Impulse on a Sliding Block?
- enchantress95
- · Replies 1 ·
What is the maximum force of static friction for the block?
- oMovements
- · Replies 4 ·
At what angle is the work done minimised?
- subzero0137
- · Replies 16 ·
Net Force Dispute with Teacher
- Ninjamonkey474
- · Replies 4 ·
Finding net gravitational force on mass M from two masses at right angles
- Ajax45
- · Replies 1 ·
How Do You Calculate the Force Exerted by a Shopper on a Grocery Cart?
- crysland
- · Replies 3 ·
Fluctuating Refractive Index and Light Perception
- utkarshakash
- · Replies 1 ·
Figuring Out Forces in a Pulley System: What and Why?
- princejan7
- · Replies 1 ·
How Do You Calculate Kinetic Friction and Motion Distance in a Physics Problem?
- oMovements
- · Replies 11 ·
Solving Hooke's Law Problem: Find Position of Block
- Amy Marie
- · Replies 3 ·
Thermodynamics 1st law question - closed system
- chuffy
- · Replies 6 ·
Deriving formula for surface velocity of a satellite in orbit.
- spiruel
- · Replies 2 ·
Calculating the volume that a compressed mass of air will occupy.
- SherlockOhms
- · Replies 11 ·
Vector problem (motion in a plane)
- Ash413
- · Replies 2 ·
Finding distance between two charges given their potential difference.
- rslewis96
- · Replies 1 ·