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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Wave Speed As a Function of Tension
- neoking77
- · Replies 7 ·
Building an Egg Launcher: Get Creative with Surgical Tubing
- dudestermikey
- · Replies 2 ·
Solving Mass Ratios from Acceleration: The 3-Body Experiment
- Karma
- · Replies 5 ·
What is the voltage in kV across each capacitor?
- at3rg0
- · Replies 10 ·
Calculating Voltage Decay in a Resistor-Capacitor Circuit
- SMUDGY
- · Replies 1 ·
Mountain climber: average speed, angle, and vertical velocity
- davidco
- · Replies 11 ·
Solving for v_{0y}: A QB's Challenge
- polymerase
- · Replies 4 ·
Finding spring balance readings (Newtons)
- dnt
- · Replies 6 ·
Gauss's Law and electric field Question
- desaila
- · Replies 4 ·
A 9.0 μF and 4.0 μF capacitors are connected in parallel
- mikebc
- · Replies 3 ·
A: Calculate Ferlini's acceleration = 12.3 m/s / 0.16 s = 76.875 m/s^2
- cherryrocket
- · Replies 4 ·
What are the final velocities of two balls after a head-on elastic collision?
- perfectionist17
- · Replies 3 ·
Why Do Small Front Wheels on Drag Race Cars Prevent Nosing Upward?
- jlaugh87
- · Replies 1 ·
You construct a rectangle that is 6cm by 8cm
- Xaspire88
- · Replies 6 ·
Least-Squares fitting of King's Equation
- BowlingSuperior
- · Replies 3 ·
What is the Angle, Velocity, and Time for Canoeing Across a River?
- jayced
- · Replies 4 ·
Which vector diagram shows A as the sum of B and C?
- Precursor
- · Replies 3 ·
Finding Spring Constant for Oscillating Mass
- Saladsamurai
- · Replies 2 ·
Catching up to someone traveling at 4.5 km/h
- cherryrocket
- · Replies 7 ·
How Does Energy Conservation Apply to a Rotating Pulley System?
- snoggerT
- · Replies 10 ·
Calculating Lift Force of Helicopter Propellers
- chemguy990
- · Replies 1 ·
Initial acceleration of charge on y-axis near three fixed charges
- mujadeo
- · Replies 1 ·
Extra energy from capacitor problem
- indigojoker
- · Replies 5 ·
Tension of ball hanging from Ceiling
- Jtappan
- · Replies 1 ·
Understanding Stability and Equilibrium
- Fluff
- · Replies 8 ·
Two masses tied together on frictionless ramp
- Jtappan
- · Replies 1 ·
Ballistic pendulum and initial speed
- jaded18
- · Replies 7 ·
Bungee Jump - Potential and Kinetic Energy
- kdm06
- · Replies 13 ·
Electric Field Strength from point charges
- pingpong240
- · Replies 4 ·
What Is the Average Force Exerted by Car Brakes During a Stop?
- Knowneo
- · Replies 1 ·
Projectile Motion of a car off a cliff
- Vaalron
- · Replies 1 ·
Two masses on an inclined plane with a massless pulley
- JefeNorte
- · Replies 3 ·
Calculating River Velocity with Relative Boat Motion
- astrokat11
- · Replies 2 ·
How High Can a 150kg Rocket Go Starting from 200km Above Earth?
- Saladsamurai
- · Replies 16 ·
Rod A is a positively charged insulator.
- Xaspire88
- · Replies 2 ·
How fast is her racket moving immediately after the impact?
- splac6996
- · Replies 1 ·
Calculating Voltage Drop Across 5kOhm Resistor
- myoplex11
- · Replies 3 ·
What horizontal force is necessary to hold the bag in the new position?
- jgibbon2
- · Replies 1 ·
Why does 143 round to 150 with 2 significant figures?
- physstudent1
- · Replies 2 ·
Solving Three Physics Problems: SIL and Sound Intensity Calculations
- spherenine
- · Replies 1 ·
Questopn about phase shift SHM
- Saladsamurai
- · Replies 6 ·
Solving a Capacitance Problem: Finding the Voltage Drop Across a Resistor
- myoplex11
- · Replies 3 ·
Accelerating a 6.00-kg Bucket with 66.0-N Breaking Strength
- rmedrano89
- · Replies 1 ·
Calculating Average Velocity for a Bike Ride
- mkylman
- · Replies 4 ·
Ship Adrift: 500 m from Reef, Can It Escape?
- rmedrano89
- · Replies 1 ·
What is the resultant torque about the hinge?
- pooface
- · Replies 7 ·
Tension on Incline Plane: Calculating Forces in a Two-Box System
- Jtappan
- · Replies 2 ·
Time difference between 50km trips at 90 and 95 km/h
- mkylman
- · Replies 22 ·
What is the angle vector A makes with the y-axis?
- physstudent1
- · Replies 5 ·
Calculating Force Needed to Stop a Race Car
- willingtolearn
- · Replies 2 ·
How Far Will a Golf Ball Fly When Hit at an Angle?
- trebashkin
- · Replies 8 ·
What is the charge on the capacitor after the wire is connected?
- myoplex11
- · Replies 1 ·
Decibel Comparison Formulas for Sound Levels
- vertciel
- · Replies 4 ·
Coefficient of Kinetic friction problem
- vericolorful
- · Replies 3 ·
How far apart are two stones if one is dropped 1.50 s after the other?
- lostfan176
- · Replies 3 ·
How Does String Length and Tension Affect Harmonics and Overtones?
- nblu
- · Replies 4 ·
Kinetic Friction of jet powered skiis
- queenyv2005
- · Replies 2 ·
Elastic collision question: two marbles
- GFWD
- · Replies 1 ·
Wave Function for harmonic wave :s
- jesus1987
- · Replies 1 ·
How Do You Calculate Acceleration in a Pulley System with Different Masses?
- Snoop06
- · Replies 14 ·
Block sliding down frictionless ramp while being pulled with constant force?
- soliel021
- · Replies 9 ·
Electric Fields on a Hollowed Metal Sphere
- Badger
- · Replies 7 ·
What is Stored in a Capacitor and an Inductor?
- indigojoker
- · Replies 3 ·
Work done by mass on a loop-the-loop track
- delecticious
- · Replies 10 ·
What is the role of external forces in rocket propulsion?
- Oblio
- · Replies 13 ·
Solving Electricity Prob w/ R1=7\Omega, R2=5\Omega, R3=4\Omega
- faoltaem
- · Replies 3 ·
Finding Velocity of Top of Object's Shadow
- bdb1324
- · Replies 6 ·
What Are the Forces Acting on a Crate on an Inclined Ramp?
- Bob Loblaw
- · Replies 2 ·
Time an electron spent in a magnetic field
- luisabejarin
- · Replies 2 ·
Where should the 10 gram ball be placed for the decoration to balance at the origin?
- smileandbehappy
- · Replies 6 ·
Simple constant velocity question
- cherryrocket
- · Replies 1 ·
Cant get y-component of point charges on test charge
- mujadeo
- · Replies 1 ·
Momentum, Completely Inelastic Collision
- lfwake2wake
- · Replies 1 ·
Square array (electric field question)
- mujadeo
- · Replies 2 ·
Position, Velocity and acceleration
- smh745
- · Replies 1 ·
Find the second force in unit-vector notation
- tjcreamer9
- · Replies 1 ·
Golf Ball Projection: 45 vs 30 Degrees
- bobonguyen90
- · Replies 1 ·
Velocity of Second Piece After Explosion
- turnip
- · Replies 7 ·
How Does a Ferris Wheel Affect the Forces on a Rider?
- chooch
- · Replies 6 ·
Will the Stone Catch the Parachute Before Hitting the Ground?
- bobonguyen90
- · Replies 1 ·
Centripetal Force in a Clothesdryer
- GoldShadow
- · Replies 1 ·
Using force equations and kinematic equations
- aligass2004
- · Replies 29 ·
Is a Test Charge Always Assumed to Be Positive?
- mujadeo
- · Replies 1 ·
Spring constant with point charges
- mujadeo
- · Replies 3 ·
Grade 11 Physics; Doppler Effect.
- nblu
- · Replies 8 ·
Nonconservative forces/ and conservation energy problem
- logglypop
- · Replies 17 ·
How Do You Calculate Average Velocity in Vector Notation?
- Blink691
- · Replies 1 ·
Electric Flux and Gauss' Law of point charges
- robbondo
- · Replies 3 ·
Net force direction and magnitude with two perpendicular forces
- willingtolearn
- · Replies 6 ·
Two - dimensional motion problem
- rcwha
- · Replies 16 ·
Conservation of Energy Block Problem
- GorgonSed
- · Replies 5 ·
Block pushed along ceiling with angled force and friction
- covergirl
- · Replies 1 ·
Delta Sign Confusion: Solving Depth of Grand Canyon
- ashley_bryant
- · Replies 1 ·
How Do Forces Determine the Movement of a Block on an Inclined Plane?
- skateza
- · Replies 1 ·
Solving the Tension in Two Hanging Paint Buckets
- lim
- · Replies 3 ·
Block on 30° incline: change in potential energy
- Fittleroni
- · Replies 2 ·
How Do You Calculate Change in Velocity?
- sphykik
- · Replies 2 ·
Find Forces of Box on Surface: Normal, Friction, Applied, Weight
- Eathrock
- · Replies 4 ·
Calculating the Vertical Height of a Kangaroo Jump
- lostfan176
- · Replies 2 ·