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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Vertical Displacement of an arrow?
- dm187
- · Replies 2 ·
Model Airplane: Tension/Circular Motion/Lift
- phy221
- · Replies 1 ·
Does friction equal applied force at constant velocity?
- anna sung
- · Replies 2 ·
Reading a scale as a function of time (need formula)
- pinkybear
- · Replies 1 ·
Electric field of point charges
- dh743
- · Replies 1 ·
How Much Force Did the Second Person Apply to the Soccer Ball?
- SteveyBee
- · Replies 4 ·
What Is the Correct Transmittance Function for Two Infinitely Narrow Slits?
- cahill8
- · Replies 1 ·
Determine the power of the jet engine of an airplane
- Fisicks
- · Replies 1 ·
Prism Question: need this by tonight
- jeslyn
- · Replies 1 ·
Solving Static Friction Coefficient for Wooden Block on Table
- runningirl
- · Replies 1 ·
Rotational inertia of four particles at square vertices
- mmiller9913
- · Replies 1 ·
Why Do Lower Frequency Sounds Travel Easily Through Walls?
- LoveKnowledge
- · Replies 3 ·
How to Convert .15Mo/pc^3 to g/cm^3?
- leonne
- · Replies 2 ·
Calculation of center of mass difficult
- eileen6a
- · Replies 3 ·
Age of Seashell: Calculating 14-C Half Life
- matt222
- · Replies 3 ·
Electric Fields - Net Charge on Point Charges
- dh743
- · Replies 9 ·
Vertical impulse force in triple jump takeoff
- JJBladester
- · Replies 3 ·
Estimate Electric Potential of Soap Bubble Drop
- Liquidxlax
- · Replies 3 ·
Solving Friction Question: Child on Stair Rail w/ 40 Degree Angle
- runningirl
- · Replies 1 ·
Aerodynamic force of bird problem
- harp AP 2010
- · Replies 3 ·
Does a ball do work on a kid if the kid doesn't move?
- harp AP 2010
- · Replies 1 ·
Understanding Rotational Dynamics to Solving Tricky Problems
- a_lawson_2k
- · Replies 15 ·
Two asteroids falling toward each other gravitationally
- jessicak
- · Replies 8 ·
How to Combine Resistors in a Triangular/Diamond Formation?
- Cursed
- · Replies 2 ·
Show that the Internal Energy of an Ideal gas is a Function of T only
- knowlewj01
- · Replies 2 ·
Ideal gas law problem in outer space
- Freye
- · Replies 5 ·
Maximum Efficiency of a Solar-energy Panel
- alweltz
- · Replies 1 ·
Calculating Friction Force on Falling Object: Ann T Matter (Weight 600N)
- HarbingerGunn
- · Replies 2 ·
Ball thrown up, falling at 8 m/s after 6 seconds, why is displacement negative?
- madah12
- · Replies 7 ·
Rotational Inertia with varying axis of rotation?
- Javasauce
- · Replies 1 ·
How Does Temperature Affect the Buoyancy of an Iron Cube in Mercury?
- Freye
- · Replies 2 ·
Biot–Savart law and Ampere's law
- minifhncc
- · Replies 1 ·
Friction on a banked road and max velocity
- spark706
- · Replies 1 ·
How Fast Will the Car Hit the Garage Door at the Bottom of the Incline?
- Renee8
- · Replies 3 ·
Acceleration, velocity and displacement
- jono90one
- · Replies 5 ·
Why do yellow-light glasses help pilots see more clearly?
- Pranav Jha
- · Replies 5 ·
Question about elastic/inelastic collision
- ryan9907
- · Replies 3 ·
Coefficient of Kinetic Energy; What is it and How can I calculate it?
- DBAA
- · Replies 4 ·
Water flowing from an open tank
- cdotter
- · Replies 11 ·
Medium level calculation of center of mass
- eileen6a
- · Replies 3 ·
How Much Work Is Done on a Mass by a Time-Varying Force?
- XwakeriderX
- · Replies 3 ·
Calculating Bullet Speed for Pendulum Swing?
- miss_story
- · Replies 1 ·
Exploding Projectiles: What Happens to the Other Piece?
- jessicak
- · Replies 9 ·
How can energy conservation be applied to a spring connecting two masses?
- kikifast4u
- · Replies 2 ·
Rotational Collision of Sliding Boys: Velocity and Kinetic Energy Analysis
- avn4ever
- · Replies 1 ·
Finding Times of Particle Intersections with Equated Vectors
- jono90one
- · Replies 7 ·
Electric field inside a conductor not zero
- prismaticcore
- · Replies 3 ·
Projectile motion cannon shell problem
- Zugox
- · Replies 3 ·
What are the units for the equation E=gamma*m?
- lavenderblue
- · Replies 3 ·
Two blocks sliding past each other
- chiddler
- · Replies 6 ·
Weighing Something in an Elevator
- PhysicsAdvice
- · Replies 1 ·
Calculating Friction & Coefficient: 0.50 kg Block on 30° Ramp
- runningirl
- · Replies 2 ·
Physics - Determine Pith Ball Charges
- babelii
- · Replies 1 ·
Trebuchet projectile falling from 5.40m height
- Cav101
- · Replies 2 ·
To determine Series Vs Parallel Circuits
- JasonSola
- · Replies 1 ·
How Do You Calculate Time Constant and Capacitance in an RC Circuit?
- Obsqura
- · Replies 4 ·
In reaching her destination, a backpacker walks with an average velocity of 1.21
- mytalkingbird
- · Replies 3 ·
Block sliding down an incline with friction
- MitsuShai
- · Replies 7 ·
Elastic collision between pendulum bobs with different masses
- XwakeriderX
- · Replies 2 ·
How much work is done by the lifting force?
- tica86
- · Replies 4 ·
Two bulbs, power, voltage, seres connection
- math_maj0r
- · Replies 2 ·
Finding the Center of Mass of a Meter Stick with Variable Mass Density
- XwakeriderX
- · Replies 2 ·
Solving Ice's Acceleration Down a Sloped Roof
- runningirl
- · Replies 5 ·
Net work problem with F cos theta
- loganblacke
- · Replies 4 ·
Ion Thruster Question from Year 12
- physicist101
- · Replies 3 ·
What Is the Average Vertical Velocity Halfway Through a Circular Path?
- ortegavs
- · Replies 4 ·
Finding the angle of the projectile
- nagaromo
- · Replies 7 ·
Does the Doppler Effect Apply to Sound, Light, and Water Waves?
- golriz
- · Replies 2 ·
RL Circuit Differential equation
- IBY
- · Replies 10 ·
Conservation of Energy: Bungie Jumping
- Seda
- · Replies 2 ·
Resonant frequency of open tube chime at third harmonic
- Pruzhinkin
- · Replies 4 ·
Power and Rotational motion problems
- Fisicks
- · Replies 1 ·
Calculating Maximum Torque of Copper Wire Loop
- J89
- · Replies 1 ·
Girl pulling a 6.5 kg sled at 35 degrees with friction
- runningirl
- · Replies 7 ·
Work Done on a system by an external force
- harpua09
- · Replies 1 ·
What is the Magnetic Field at Point P in Figure (e)?
- musiliu
- · Replies 1 ·
Wavelengths of a laser pulse and inductance in tuning of an FM radio
- ljmcdonald
- · Replies 1 ·
Finding work done by force of friction
- Zipzap
- · Replies 4 ·
How to Calculate Space Shuttle Orbital Parameters?
- wondermoose
- · Replies 1 ·
What Is the Mechanical Energy of a Spring-Mass System?
- loganblacke
- · Replies 2 ·
Parallel and perpendicular components of acceleration
- madah12
- · Replies 10 ·
What is the Time to Slide 10m After Falling from a Truck?
- angel1410
- · Replies 5 ·
Ball released from rest at the top of slope
- electrofanner
- · Replies 2 ·
Thermodynamics problem - adiabatic process
- Twoism
- · Replies 5 ·
Gravitational Potential Energy of a vehicle
- Winegar12
- · Replies 3 ·
Industrial flywheel energy storage and power delivery
- kikko
- · Replies 5 ·
Calculating Torque for a Particle in an xy Plane
- pippi1500
- · Replies 1 ·
Two Asteroids Colliding- Find the Initial Velocities
- jessicak
- · Replies 1 ·
Summing Maclaurin Series for x^2
- JakeD
- · Replies 1 ·
Finding the weight of a balanced bar on a pivot
- urbanupstart
- · Replies 15 ·
Projectile motion on an inclined plane
- confusedinMA
- · Replies 2 ·
How Do You Calculate the Power Supplied to a Vibrating String?
- industry86
- · Replies 1 ·
How to solve cross products in physics problems?
- uchicago2012
- · Replies 2 ·
Where did this formula come from?
- XwakeriderX
- · Replies 2 ·
Balistic Pendulum Velocity Approximation Formula Explanation and Solution
- Oldblood
- · Replies 3 ·
What is the minimum height for a mirror to see full image?
- Dars
- · Replies 1 ·
Why do different formulae give me different answers for mass of galaxy?
- anyaxo
- · Replies 1 ·
Moment of Inertia of a grinding wheel
- tak08810
- · Replies 10 ·
How do I find force given mass and constant velocity
- Solid
- · Replies 3 ·
Kinetic Energy, Conservation of Energy, Potential Energy, etc
- nicknaq
- · Replies 4 ·