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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Physics: Why Waves in Fluids are Longitudinal
- Rashid101
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What is the Maximum Magnitude of a Vector Sum?
- vorse
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Velocity of mass connected to a fixed rotating wheel with a massless string
- carol123
- · Replies 8 ·
Double Slit, different wavelengths change in X
- rss14
- · Replies 5 ·
Basketball projectile motion with initial height 2.3m
- bob 911
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Kinetic energy/rotational kinetic energy
- reb659
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Finding time when velocity equals -0.150 m/s in SHM
- brunettegurl
- · Replies 14 ·
Is potential zero inside a hollow charged sphere?
- Rashid101
- · Replies 1 ·
How to Determine the Initial Temperature of Iron to Melt Ice in Thermodynamics?
- ashvuck101
- · Replies 12 ·
Calculating charge of suspended pith balls in equilibrium
- General_Sax
- · Replies 8 ·
Heat question?the amount of heat gained or lost by a substance is equal to
- amandamolegir
- · Replies 8 ·
Equilibrium Problem: Max Mass for Throckmorton on 6.0m Plank
- jghlee
- · Replies 3 ·
Refraction through water, glass prism, and plastic sheet
- whitehorsey
- · Replies 1 ·
RC Circuit/Current/Resistance Problem. Circuit Gurus come here
- Divide
- · Replies 15 ·
Is total capacitor energy 2400 J if each plate has 1200 J charge?
- leelsund
- · Replies 7 ·
Complex scissors truss question
- haydez98
- · Replies 8 ·
How Can I Calculate Energy and Power for an 800W Electric Motor?
- lovcullen
- · Replies 4 ·
Finding magnitude and direction angles of vector B
- abhikesbhat
- · Replies 19 ·
Why do two cars rolling downhill reach the finish line together without friction?
- keemosabi
- · Replies 9 ·
Uncertainty principle for particle in infinite potential well
- mrausum
- · Replies 3 ·
How Do You Calculate the Speed of a Marble Rolling Down an Incline?
- lagwagon555
- · Replies 2 ·
What is the speed of the objects in a pulley system?
- physics10189
- · Replies 8 ·
Negative acceleration - change in direction or slowing down?
- kathyt.25
- · Replies 3 ·
Hydrogen atom wavelengths and energy levels using the Rydberg formula
- HjGanap
- · Replies 1 ·
Analyzing Motion Down a Curved Ramp | Guidance & Help
- oxnume
- · Replies 16 ·
Unraveling the Mystery of a Two-Car Crash
- loka
- · Replies 4 ·
Uncertainty propagation visible light spectrum
- zdenton
- · Replies 4 ·
Finding acceleration of two objects in a pulley system
- kathyt.25
- · Replies 3 ·
Tension and acceleration of a pulley sytem attached to a block
- emmaemma08
- · Replies 3 ·
What Are the G-Forces Experienced on a Rollercoaster Ride?
- Oscar Wilde
- · Replies 5 ·
Ideal Gas Law and dimensional analysis
- science.girl
- · Replies 9 ·
Finding y in a projectile motion problem
- jenador
- · Replies 4 ·
Finding the force needed to push a 5000 N box up a 20° incline with friction
- cursedsoul03
- · Replies 3 ·
Net force on an object and contact force between objects
- kathyt.25
- · Replies 2 ·
Newton's third law and free body diagrams
- kathyt.25
- · Replies 1 ·
Finding acceleration of a three-object pulley system
- kathyt.25
- · Replies 2 ·
Siphoning A Clogged Sink (Bernoulli's Principle)
- GDGirl
- · Replies 5 ·
*Calculation for Moon Descent and Ascent Velocity*
- vincentryan
- · Replies 1 ·
How to Calculate the Distance of a Projectile Released from an Airplane?
- jenador
- · Replies 13 ·
When can you assume that gravity is the only applied force opposing friction?
- kathyt.25
- · Replies 3 ·
Finding wavelength with just frequency?
- DDRchick
- · Replies 3 ·
The Brogile wavelength of an Alpha particle
- mrausum
- · Replies 7 ·
What is the Spring Constant of a Spider's Silk Thread?
- brunettegurl
- · Replies 7 ·
Can You Calculate Capacitance for Each Half of a Cylinder Capacitor Separately?
- en.yokhai
- · Replies 1 ·
Solving Power for Solenoid w/ 9.80 mT Field
- hellomister
- · Replies 1 ·
Why Is the Angle FIE Omitted in the Cylindrical Coordinate Answer?
- bengaltiger14
- · Replies 2 ·
Finding resultant angle when Fx is negative and Fy is positive
- NBAJam100
- · Replies 2 ·
Minimum compression of a spring.
- college boy19
- · Replies 1 ·
What Physics Principle Explains Why a Balloon Shoots Out When Air Rushes Out?
- Nuha99
- · Replies 3 ·
Carnot engine with 5kW output and 35% efficiency
- cathy88
- · Replies 7 ·
Energy-absorbing bumper force as function of position and velocity
- Wattever
- · Replies 6 ·
Rearranging Formulas for Orbital Velocity and Radius
- dukg08
- · Replies 11 ·
Finding particle mass from two photons with 500 GeV and 600 GeV energies
- Angel_Kate
- · Replies 10 ·
Pendulum find length when it rotates
- physics10189
- · Replies 5 ·
Magnetic Fields - Extending Concepts
- krwilliams
- · Replies 8 ·
Finding the distance from a velocity-time graph
- kathyt.25
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Which kinematic equation should be used?
- kathyt.25
- · Replies 3 ·
How do moving electric fields create magnetic fields?
- Yuqing
- · Replies 1 ·
What is the friction force between a sliding bear and a tree?
- mellybug
- · Replies 1 ·
What is the Relationship Between Wavelength and Ionization Energy in Hydrogen?
- mrausum
- · Replies 5 ·
Two unknown resistors. Need to find values of resistors.
- jhart_929
- · Replies 8 ·
A safe held by a string breaks and lands on a spring
- talaroue
- · Replies 8 ·
Can Two Street Cars Be Pulled Up a Slope with a Low Friction Coefficient?
- cheez
- · Replies 6 ·
Electric Field at Point Z, Two Charges
- mike_302
- · Replies 4 ·
Finding the x component from a velocity vs. time graph
- ran
- · Replies 4 ·
Cylindrical fishing reel problem using moment of inertia
- jhart_929
- · Replies 3 ·
Finding the force of friction acting on an object - static or kinetic friction?
- kathyt.25
- · Replies 1 ·
Varying force is applied to an object problem
- brentwoodbc
- · Replies 1 ·
Calculating Acceleration of Simple Pendulum
- lha08
- · Replies 3 ·
Acceleration on a curve for a car
- ahchonx
- · Replies 5 ·
How Does Acceleration Impact a Sprinter's 100 Meter Dash Performance?
- jmanz
- · Replies 6 ·
Motion on a Plane: Solving Problems with Stone Thrown from 200m Tower
- mohammed1992
- · Replies 2 ·
How Do You Calculate Football's Velocity and Time to Reach Maximum Height?
- mohammed1992
- · Replies 1 ·
Speed of refracted waves in different mediums
- taylorboss_k
- · Replies 5 ·
Frictional force/coeff of friction
- pizat98
- · Replies 4 ·
Projectile Motion cannon off a cliff
- Towk667
- · Replies 10 ·
Convex Mirrors and Magnification
- kc262
- · Replies 5 ·
Calculating Cliff Height Using Freefall Data
- Billy_Bob
- · Replies 5 ·
Does the normal always equal weight, if on a non-inclined plane?
- kathyt.25
- · Replies 3 ·
Solving a projectile motion range equation for displacement
- brusier
- · Replies 1 ·
How Can You Minimize Spherical Aberration in a Single Lens System?
- fantagero88
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Constant Acceleration involving two identical objects
- coco87
- · Replies 2 ·
What is the momentum of the heavier fragment after a rocket explosion?
- talaroue
- · Replies 20 ·
Projectile motion stunt doubles
- pinkfloyd12
- · Replies 5 ·
Bullet hits a block and it slides.
- talaroue
- · Replies 3 ·
Momentum problem involving collision of two objects.
- angotta
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Finding the direction of acceleration in degrees
- kathyt.25
- · Replies 1 ·
Pulley question - acceleration of an object across a horizontal surface
- kathyt.25
- · Replies 2 ·
What is the role of Q1 in finding V2 using Bernoulli's equation?
- Saladsamurai
- · Replies 11 ·
Kirchhoff's Current Law and Solving for Unknown Currents
- jayjay112
- · Replies 8 ·
Tension and Friction Problem, I'm finding weird answer.
- tomas_xc
- · Replies 8 ·
Conservation of momentum of a colliding car
- DrDanger
- · Replies 3 ·
Solve Equivalent Resistance: Points A and B
- physicsed
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Electric Field: Opposite Charges for Zero Net Field
- Ephysics
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Finding potential difference between terminals
- manjula
- · Replies 2 ·
Total resistance through cubic circuit
- Fizzicist
- · Replies 6 ·
Magnetic field of a wire with current running through it
- Dell
- · Replies 7 ·
Finding force from potential energy in polar coordinates
- xgoodtimesx
- · Replies 2 ·
Oscillation in Space: Derive an Equation to Determine Period in Years
- xgoodtimesx
- · Replies 1 ·
How Is the Density of the Rock Determined in a Buoyancy Problem?
- xgoodtimesx
- · Replies 1 ·