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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Interference pattern of light through a grating
- the ogre
- · Replies 2 ·
Time dilation and length contraction for a trip to Alpha Centauri at 0.95c
- Delzac
- · Replies 20 ·
Longitudinal magnification of an object along the principal axis
- Jona
- · Replies 6 ·
What Is the Time Interval Between Photon Pulses Observed from Earth?
- Delzac
- · Replies 4 ·
Calculating Time to Melt Substance at 80 C
- lalala_land89
- · Replies 1 ·
Why Does Segmenting Thermistor Data Create a Linear Relationship?
- Large dwarf
- · Replies 4 ·
Work done on 3.0 kg object from position function
- mikejones2000
- · Replies 16 ·
Superposition - broadcast antenna question
- rpa3010
- · Replies 1 ·
Solve Rotational Motion: Distance and Time
- ataglance05
- · Replies 2 ·
Slope of the position vs. time graph
- Aerokey
- · Replies 2 ·
Help What's wrong with this picture?
- solutionhereplz
- · Replies 5 ·
Volume and density change of water at 11 km ocean depth
- rkrk
- · Replies 2 ·
Calculating Boat's Speed After Package Throw
- chibichibi7554
- · Replies 2 ·
Pressures on a tube filled with water
- Idea04
- · Replies 2 ·
How Much Work Is Done When Pulling a Sled 1 km with a 45-Degree Rope Angle?
- zackf
- · Replies 1 ·
Final answer: How fast does the block of wood move after being hit?
- chibichibi7554
- · Replies 1 ·
How Do You Choose the Right Formula for Linear Momentum and Collisions?
- grigabuoy
- · Replies 2 ·
A Man and His Shadow: Velocity and Relationship with Sunlight
- Gyroscope
- · Replies 5 ·
What is the initial projectile speed of the ball?
- kappcity06
- · Replies 6 ·
Calculate Fountain Power for a 28.8m Stream Using Bernoulli's Equation
- kitty9035
- · Replies 3 ·
How Does a Potter Stop a Rotating Wheel Using Friction?
- mirandasatterley
- · Replies 3 ·
Kinetic energy of runner race question
- OVB
- · Replies 5 ·
What is the initial speed of a juming flea?
- physics_guy
- · Replies 3 ·
How Do Parallel Current-Carrying Wires Affect Each Other?
- steve12
- · Replies 1 ·
Calculating Energy Requirements for Placing a Space Shuttle in Orbit
- Gyroscope
- · Replies 7 ·
How to Determine Unknown Masses in an Atwood's Machine?
- imsoconfused89
- · Replies 2 ·
Finding friction force and coefficient from cart collision data
- SJ107
- · Replies 10 ·
Stopping distance of an automobile skidding on dry and wet pavement
- msesulka
- · Replies 6 ·
What Causes Clock Desynchronization in Relativity?
- Delzac
- · Replies 14 ·
Finding position vectors and force vector for two particles in 3D
- Physicus2
- · Replies 3 ·
Proton deflected by nucleus using angular momentum conservation
- CharlieManfred
- · Replies 2 ·
Why does tension contribute to restoring force in a charged pendulum?
- Amith2006
- · Replies 8 ·
Friction force on wedge with oscillating mass on 60° incline
- chaoseverlasting
- · Replies 2 ·
Can You Calculate the Reaction Time Needed to Avoid a Deer at 18 m/s?
- meggy8716
- · Replies 4 ·
How buoyant force and atmospheric pressure help in daily life
- CANH_N2000
- · Replies 4 ·
Electric field (easy at least I thought so)
- Kalie
- · Replies 1 ·
Uniform Electric Field Calculation: Proton and Electron Motion
- doublec4
- · Replies 4 ·
Calculating Time in Air for a Thrown Ball
- ecthelion4
- · Replies 6 ·
Freefall motion: velocity, acceleration, momentum, kinetic energy
- SA32
- · Replies 2 ·
Can a 500g Glass of Water Tip or Slip?
- A_Moose
- · Replies 2 ·
Critical angle for light going from oil to water
- maro
- · Replies 1 ·
Electric fields equalling zero
- mrpbll
- · Replies 3 ·
Circular Motion: Solving for Distance Traveled in an Hour
- ataglance05
- · Replies 1 ·
Solving Thin Lens Formula Problems
- Alain12345
- · Replies 10 ·
Calculating Tungsten Melting Temperature Using Circuit and Ohm's Law
- Gyroscope
- · Replies 3 ·
Gamma factor in legth and mass demostration
- Littlepig
- · Replies 7 ·
How do you calculate current in a changed parallel circuit?
- bobtheubs
- · Replies 2 ·
Motor Force Calculation for Remote Control Toy Car
- pivoxa15
- · Replies 8 ·
How Do You Extract the Parameter C in the Maxwell-Boltzmann Distribution?
- hikaru
- · Replies 1 ·
Finding cliff height from sound delay time
- Intr3pid
- · Replies 1 ·
Net charge of a 1.68 g gold nugget after removing 1% of electrons
- dmolson
- · Replies 3 ·
How Fast Must the First Ball Be Thrown to Land Simultaneously with the Second?
- robbondo
- · Replies 6 ·
Finding velocity components of a projectile from its trajectory
- teknodude
- · Replies 7 ·
Calculating Velocity of Water in a Circular Pipe
- kitty9035
- · Replies 4 ·
Acceleration of a Sphere with a Charge
- The Matador
- · Replies 1 ·
What is the Intensity of Light at a Point Composed of Multiple Phasors?
- Amith2006
- · Replies 6 ·
Is Pressure on an Item Underwater Equal in All Directions?
- 2112
- · Replies 7 ·
Thermodynamics Question - Entropy etc
- doubleB
- · Replies 1 ·
Electric current and forces problem
- steve12
- · Replies 2 ·
What physics concepts can I research for a paper on eggs?
- anjanp
- · Replies 6 ·
What happened to the kinetic energy?
- pivoxa15
- · Replies 3 ·
Change of momentum of a trolley
- pivoxa15
- · Replies 30 ·
Questions about Potential Energy and Magnetism
- isoics
- · Replies 11 ·
Finding the Charge for a Specific Electric Field at the Origin
- Soaring Crane
- · Replies 7 ·
How can I determine the magnification of a lens?
- Johnny_99
- · Replies 1 ·
Two masses over a pulley: find acceleration, force and time
- pivoxa15
- · Replies 4 ·
How Does Frictionless Surface Affect Gyroscope Precession?
- MathematicalPhysicist
- · Replies 3 ·
Physics concepts of a trebuchet
- jbisel
- · Replies 1 ·
Electric Field and Distance From Particle
- Soaring Crane
- · Replies 1 ·
Minimum speed for motorbike to jump 11.7 ft ditch with 5 ft bike length
- f(x)
- · Replies 2 ·
Energy and calculating vaporization of water
- jacqui
- · Replies 5 ·
Calculating EMF Induced Current in a Circular Loop of Wire
- metalmagik
- · Replies 2 ·
Rich Man Freezes to Death on Frozen Lake
- pivoxa15
- · Replies 15 ·
A submerged ball pretty simple but im just learning this
- biggy135
- · Replies 4 ·
Net force on Mars water tank bottom with 14.2 m depth
- biggy135
- · Replies 13 ·
Finding voltages and currents in a four-resistor circuit with 15V source
- VinnyCee
- · Replies 14 ·
Why does ball bearing mass not affect drop height for equal final velocity?
- sunbunny
- · Replies 15 ·
Momentum of Tennis Ball Question
- The Matador
- · Replies 5 ·
Tarzan swings down to save Jane
- dkgojackets
- · Replies 2 ·
Charge density on neuronal cell membrane with 0.10 µm separation
- deenuh20
- · Replies 5 ·
Finding resultant and angle from two vectors with 3-4-5 and 1-2-3 triangles
- Bradracer18
- · Replies 11 ·
Underwater Pressure sunken ocean liner
- velvetymoogle
- · Replies 3 ·
Calculating Weight of Concrete Column
- Mesmer
- · Replies 6 ·
Vector question, concerning direction
- Spydermonkey
- · Replies 7 ·
What Does Kip Mean in Measurements?
- Mesmer
- · Replies 6 ·
Solving for Charges on Suspended Spheres
- twotaileddemon
- · Replies 3 ·
Conservation of Energy/Angular Momentum
- velvetymoogle
- · Replies 3 ·
Sphere rolling down a ramp linear acceleration
- velvetymoogle
- · Replies 8 ·
How Do You Calculate Displacement in a Standing Wave Problem?
- ubiquinone
- · Replies 6 ·
Bullet through block and spring
- dkgojackets
- · Replies 10 ·
Identifying Action Reaction Forces: A Newton's Third Law Analysis
- storygeek
- · Replies 4 ·
Polarisation of electromagnetic waves?
- smileandbehappy
- · Replies 3 ·
Bose-Einstein condensate project overview
- moe_3_moe
- · Replies 3 ·
Finding phase of voltage across resistor in RLC circuit
- Zell2
- · Replies 5 ·
What are some recommended intro physics books for studying electromagnetics?
- jinyong
- · Replies 3 ·
Orbital radius of electron around zinc nucleus
- Fusilli_Jerry89
- · Replies 5 ·
A child jumps off a rotating platform
- yasar1967
- · Replies 5 ·
What Causes a Rocket's Upward Acceleration of 4m/s² Despite Gravity?
- pivoxa15
- · Replies 2 ·