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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Ball thrown into basketball hoop: finding valid launch angles and speeds
- Gavroy
- · Replies 4 ·
Force of Gravity question, with Newton's Law of Gravitation
- Spartan301
- · Replies 7 ·
Newton's second law and ice skating
- jehan4141
- · Replies 1 ·
Why does Newton's third law eliminate all options in collision scenario?
- jehan4141
- · Replies 3 ·
Calculate the potential difference induced in the circuit as a function of time
- blueyellow
- · Replies 3 ·
What is the Power of a Fluid Pump?
- symphwar
- · Replies 6 ·
Calculate the value of magnetic flux density in air
- flyingpig
- · Replies 6 ·
Helical motion of a proton in a magnetic field
- yjk91
- · Replies 6 ·
Primary voltage on a transformer
- Muzza2
- · Replies 1 ·
Calculating resultant amplitude, given 2 ampli's and phase diff
- RKOwens4
- · Replies 17 ·
What Is the Correct Equation to Calculate Lift in RC Helicopters?
- hbooth93
- · Replies 1 ·
Could the centripetal acceleration and tension be equal in a two-string system?
- None_of_the
- · Replies 7 ·
Interpreting e C units in Coulomb's law problem
- JFonseka
- · Replies 3 ·
Hooke's Law: Finding the Spring Constant with a 50g Mass and 7.0cm Stretch
- flyingpig
- · Replies 1 ·
Vibrating String kinetic energy
- Math Jeans
- · Replies 4 ·
Vector airplane flying with a side wind
- calc3varbrg9e
- · Replies 1 ·
Effect of an uncharged sphere touched to charged sphere
- 5.98e24
- · Replies 25 ·
Acceleration in respect to power, and a KE/momentum problem.
- blackwing1
- · Replies 2 ·
Electric forces and Electric fields question on x and y components
- mattmro
- · Replies 4 ·
The average value of cos^2(phi) is 1/2.
- Lindsayyyy
- · Replies 2 ·
Determining Power Output of Pumped Energy Storage System
- kraigandrews
- · Replies 8 ·
How to calculate torque of a rotating wheel at constant angular speed?
- sixelements
- · Replies 3 ·
What is the angle at which a ball falls off a hemisphere?
- bazookajason
- · Replies 2 ·
Time required to fully discharge the capacitor where did i go wrong?
- yjk91
- · Replies 1 ·
Charge on capacitors in series with dielectric
- yjk91
- · Replies 2 ·
What Is the Coefficient of Friction for Fred's Rollerblades?
- NeomiXD
- · Replies 8 ·
Which notation is the proper way to write vector quantities?
- GreenPrint
- · Replies 2 ·
Calculate the work done in polyatomic gas
- paragchitnis
- · Replies 2 ·
Finding Parallel and Perpendicular Vectors with a Given Value of x and y
- BilloRani2012
- · Replies 18 ·
How many radians does the cylinder rotate in the first 5.0 seconds?
- jy1231
- · Replies 2 ·
Electric field in a cylindrical capacitor
- athrun200
- · Replies 31 ·
Why Don't Newton's Third Law Forces Cancel Each Other Out?
- NeomiXD
- · Replies 1 ·
Angular velocity and string tension
- druuuuuuuunnk
- · Replies 8 ·
Calculating current from diagram.
- rcmango
- · Replies 14 ·
Biot Savart polygon with n edges
- Lindsayyyy
- · Replies 2 ·
Biology Lab Microscope Magnification Calculations
- rmusial91
- · Replies 1 ·
How Do Forces Add in a Right Angled Triangle with Identical Charges?
- jevillan
- · Replies 5 ·
How Do You Determine the Unit Vector in Coulomb's Law?
- laura_a
- · Replies 5 ·
Bead on a vertical ring centripetal acceleration
- keshavm01
- · Replies 1 ·
Calculating Net Torque for Rotational Motion with Multiple Forces
- jy1231
- · Replies 1 ·
Calculating Solar Array Orientation for Scientists
- drogerssolar
- · Replies 20 ·
Maximum swing angle of hanging block hit in elastic collision
- armolinasf
- · Replies 8 ·
Maximum Force on a Test Mass in a Massive Ring
- kraigandrews
- · Replies 1 ·
Calculating Frictional Force on Tires in SUV and Trailer System
- kraigandrews
- · Replies 8 ·
Laser power from radiation pressure with 50% absorption
- Lindsayyyy
- · Replies 2 ·
The Lift Question / reactive force on an object in a moving lift
- druuuuuuuunnk
- · Replies 2 ·
Work done pushing a 110 kg motorbike up a 3.0 m ramp
- victoration1
- · Replies 3 ·
Running back and forth between two approaching friends
- Tearsandrille
- · Replies 8 ·
Question Related to Newton's Laws of Motion
- NeomiXD
- · Replies 2 ·
Graph of the Frequency(Wavelength) Relationship
- tenbee
- · Replies 3 ·
How Do Carts Behave and Springs Compress in an Elastic Collision?
- fa08ti
- · Replies 2 ·
Focal Length Calculation for a Converging Meniscus Lens
- Punkyc7
- · Replies 1 ·
Minimum Separation of Two Frictionless Pucks
- fa08ti
- · Replies 1 ·
Is the Stunt Driver's Speed Sufficient for the Jump?
- jehan4141
- · Replies 7 ·
Mass of water displaced by a block
- Jgoshorn1
- · Replies 14 ·
How Do We Calculate Mercury's Gravitational Field Intensity?
- NeomiXD
- · Replies 3 ·
How Far Should the Opposite Vehicle Be to Safely Overtake the Truck?
- physicswonder
- · Replies 6 ·
[basic] Mechanics of a model rollercoaster
- mroutlaw
- · Replies 1 ·
Magnitude of electric field at a point problem
- roam
- · Replies 3 ·
Why Does Air Pressure Change with Altitude?
- dumbperson
- · Replies 3 ·
How high above the the earth's surface is the meteor?
- fa08ti
- · Replies 10 ·
Using Kepler's Second Law - which radius to use?
- 5.98e24
- · Replies 2 ·
How Do You Calculate Braking Distance Based on Initial Speed and Time?
- physicswonder
- · Replies 4 ·
Verify Rationale: Decreasing Blood Density to Reduce Turbulent Flow
- tenbee
- · Replies 3 ·
Satellite and gravitational force
- fa08ti
- · Replies 4 ·
Calculating Velocity Using Length Contraction Formula in Relativity Theory
- sphys4
- · Replies 6 ·
What Are Neutrino Oscillations and Why Do They Matter in Particle Physics?
- helpme2011
- · Replies 4 ·
Finding the work function of a material
- mrsvonnegut
- · Replies 4 ·
Energy Required to Change Water into Steam
- Seinfeld4
- · Replies 2 ·
Speed of mass on spring at different displacement distances
- mansfief
- · Replies 1 ·
How do you apply the right hand rule?
- fa08ti
- · Replies 5 ·
Time it takes for a wave to travel up and down a rope?
- scarlson1193
- · Replies 1 ·
A Rectangle Parallel to a Magnetic Field
- aximwolf
- · Replies 6 ·
Inelastic Collision: Skiing on a Hill - Find Final Velocity
- fa08ti
- · Replies 4 ·
Solving a Linear Equation in one Variable
- raid517
- · Replies 1 ·
Car crashing into antifreeze-filled barrels vs bridge supports
- fa08ti
- · Replies 4 ·
Simple Distance to Time Equation
- physicswonder
- · Replies 4 ·
Acceleration across a floor with friction
- djokoman95
- · Replies 4 ·
Elastic Potential Energy of a system with 2 springs and 1 mass on an incline
- danpiz23
- · Replies 1 ·
Capacitance when dielectric is introduced
- logearav
- · Replies 6 ·
Calculating PSI from Kinetic Energy and Tank Size
- BenChicago
- · Replies 1 ·
Alpha particle moving in a 1.0 T magnetic field
- helpme2011
- · Replies 7 ·
Why Do We Convert Degrees to Radians in Trigonometry?
- freeofwork
- · Replies 3 ·
What is the mathematical relationship bewtween pressure and displacement?
- tenbee
- · Replies 2 ·
Graphical Relationship Between ∆x and v
- tenbee
- · Replies 8 ·
Calculating Tree Height: Using a Plane Mirror to Measure 205m
- Punkyc7
- · Replies 1 ·
How to determine the charged particles between a distance?
- oem7110
- · Replies 8 ·
Kinetic Energy / Momentum Problem
- dimeking
- · Replies 7 ·
Work done on child and sled pulled at 45 degrees with friction
- fa08ti
- · Replies 4 ·
Simple pulley problem with weights
- djokoman95
- · Replies 6 ·
How is the Angle of Deflection in a Prism Calculated?
- Lindsayyyy
- · Replies 10 ·
Missing component to get the impendance ohmic
- Lindsayyyy
- · Replies 15 ·
Finding support forces for beams in equilibrium without given lengths
- jrd007
- · Replies 29 ·
How Can You Determine Coulomb's Constant from a Force vs. Distance Graph?
- ulash
- · Replies 3 ·
Force acting on a projectile - trying to understand the question
- Femme_physics
- · Replies 19 ·
What forces are exerted on a pivot and its support in a see-saw lever?
- yhawke
- · Replies 1 ·
Checking my mass and acceleration homework answers
- ryanmcarthy
- · Replies 1 ·
Find the equivalent resistance for the circuit in the figure.
- Patdon10
- · Replies 2 ·
Finding time constants in RC circuit with parallel capacitor
- juicec
- · Replies 33 ·
Work done on a satellite ( Physics Problem )
- mathsTKK
- · Replies 7 ·