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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Force on the bottom of a swimming pool
- confusedbyphysics
- · Replies 5 ·
Mass of an Atom and magnetics problem
- adhoward24
- · Replies 1 ·
Time to pour 6L oil through funnel using Poiseuille's law
- mparsons06
- · Replies 14 ·
Pascal's Law - Containers filling up
- Glorzifen
- · Replies 1 ·
Energy Work Problem, all algebra
- enkerecz
- · Replies 1 ·
Radius Vector Homework: Find Velocity, Acceleration, Time, & Distance
- phisics99
- · Replies 1 ·
Two identical, uniform, frictionless spheres
- juggalomike
- · Replies 8 ·
Modelling an Aeroplane - Non-Linear Differential Equation
- MaceLee
- · Replies 26 ·
Sizing a winch for loading onto a ramp
- prefetch
- · Replies 1 ·
Calculating Radio Source Intensity and Momentum
- huntingrdr
- · Replies 2 ·
Anti-reflective coating thickness for magnesium fluoride on glass
- Glorzifen
- · Replies 3 ·
Calculating Electric Fields: 108 Electrons in a Circle
- bneb
- · Replies 4 ·
How high should the bottle be placed above the needle?
- huybinhs
- · Replies 2 ·
What Are the Correct Units for Density in the Equation P = Patm + ϱgh?
- jumbogala
- · Replies 2 ·
Calculating Tension in Anchor Cord for Submerged Box
- lenarass
- · Replies 8 ·
Converting force and area to pressure in pascals
- Whalstib
- · Replies 1 ·
Simple Lorentz transformation problem
- brooktrout
- · Replies 2 ·
Solving Kirchhoff's rules with two unknown currents
- Mirth
- · Replies 3 ·
Calculate Mass & Energy Lost of Flywheel B for Homework
- DR1
- · Replies 23 ·
RLC Circuit: Find Applied Source Voltage
- uzair_ha91
- · Replies 5 ·
Gravitational Force: Find Angle for Net F on Particle 1
- divr
- · Replies 1 ·
Drift speed of electrons in copper wire with temperature correction
- tom_paine
- · Replies 2 ·
Understanding Mean Centering in Spectroscopic Data Analysis
- physical101
- · Replies 7 ·
Angular velocity units and rotational kinetic energy of spinning objects
- SoulInNeed
- · Replies 2 ·
Impulse and Impact time of a collision
- frostie
- · Replies 1 ·
Linear thermal expansion of a square with different metals
- subho123
- · Replies 4 ·
Static Equilibrium of weighted door
- Quincy
- · Replies 3 ·
Where Does Lenz's Law Apply in an Automotive Setting?
- Masafi
- · Replies 3 ·
Why is my voltage answer off by 100× for 90SR+ acceleration in a mass spectrometer?
- Millimole
- · Replies 1 ·
How Should the Magnetic Fields from Two Wires Combine at Point L?
- Puchinita5
- · Replies 3 ·
Wave direction for Asin(kx±wt) and Acos(kx±wt)
- EV33
- · Replies 1 ·
A neutral metal rod in a uniform magnetic field
- DeadFishFactory
- · Replies 1 ·
Finding the distance with an acclerometer and a timer
- voxed
- · Replies 1 ·
Mass lost in chemical reactions?
- jlp
- · Replies 1 ·
Students were testing their hearing range
- Brittykitty
- · Replies 3 ·
Phase Difference between two waves from antennas
- skibum143
- · Replies 2 ·
Pathlength Difference from two waves
- skibum143
- · Replies 2 ·
How Does Waste Heat from Nuclear Plants Affect River Temperatures?
- chamrick
- · Replies 2 ·
Deriving inductance equations for coil turns, core material, and series/parallel cores
- JohnayG
- · Replies 1 ·
How Do You Find the Electric Potential of a Uniformly Charged Rod?
- seraphimhouse
- · Replies 1 ·
Direction of induced current in metal loop
- choco_moo
- · Replies 13 ·
Lorentz transformations ( synchronising reference frames?)
- joriarty
- · Replies 4 ·
Kinetic energy / projectile motion question
- Daniiel
- · Replies 15 ·
Photoelectric Effect: Question on Quantum Physics
- ghostbuster25
- · Replies 4 ·
How Do You Calculate Magnetic Fields and Forces in Physics Problems?
- yhan89
- · Replies 1 ·
Don't Miss the Boat: Get Onboard in 10cm or Less
- iwonde
- · Replies 4 ·
How Does Degeneracy Affect Energy Levels and Quantum Numbers in a 3D Box?
- indie452
- · Replies 2 ·
How much work does gravity do on the car
- Brittykitty
- · Replies 12 ·
How long does it take to pour 4 liters of SAE no. 10 oil through a funnel?
- huybinhs
- · Replies 1 ·
The radii of charges moving in a magnetic field
- satxer
- · Replies 3 ·
Finding critical angles and index of refractions
- mark9159
- · Replies 4 ·
Calculating Power of Ferris Wheel Motor Despite Friction
- Bearbull24.5
- · Replies 9 ·
Just finished my phy 2 midterm 3
- jimmybagz
- · Replies 4 ·
Finding gauge pressure and mercury height in a water-mercury U-tube
- Nhlaka
- · Replies 7 ·
Voltage in a Non-Ideal Battery
- sweetdion
- · Replies 1 ·
What Happens to Energy Levels in a Reduced Potential Well?
- indie452
- · Replies 3 ·
Stress/Strain with two rods joined together
- aal0315
- · Replies 4 ·
Estimate Time for Air Molecule Movement at STP
- aal0315
- · Replies 4 ·
Reducing Circuits to Their Simplest Form
- sweetdion
- · Replies 6 ·
Uniform, non-zero electric field
- A_lilah
- · Replies 3 ·
Bowling ball rolling - velocity, acceleration, time
- mybrohshi5
- · Replies 6 ·
Number of collisions with potential barrier
- rickysio
- · Replies 8 ·
Rocket escaping Earth: finding speed at infinity
- slayer16
- · Replies 3 ·
How Do You Calculate Acceleration and Tension in a Two-Body Pulley System?
- moe6142
- · Replies 1 ·
Conservation of energy, Rolling without slipping.
- quantumlolz
- · Replies 2 ·
Eg. 'lamda' will be '\lamda'.Radioactivity: What is the Activity After One Week?
- ibysaiyan
- · Replies 3 ·
How Is Momentum Conserved in a Two-Dimensional Radioactive Decay?
- Procrastinate
- · Replies 3 ·
Investing in current physics research
- Jules.R94
- · Replies 1 ·
Which Axis is Correct for Plotting t² and Length in Physics Graphs?
- noname1
- · Replies 9 ·
Momentum, impulse, and force for two cars with different masses
- matthayzon89
- · Replies 3 ·
How to Prove that A*B= |A||B|cos theta
- ARJewell
- · Replies 1 ·
Thick ring period formula (pendulum)
- xzibition8612
- · Replies 1 ·
Calc Forces on Hinge for Dynamically Loaded Stick
- Johnny0290
- · Replies 1 ·
Finding mass from pendulum force meter reading at angle theta
- milk242
- · Replies 2 ·
Sunlight falls on a concave mirror, where is the image formed?
- imatreyu
- · Replies 5 ·
When Do Two Rockets Traveling in the Same Direction Share the Same Velocity?
- 1man
- · Replies 1 ·
What is the speed of the water exiting the nozzle?
- mparsons06
- · Replies 23 ·
Understanding Ampere's Law: Clarifying the Role of External Currents
- maccha
- · Replies 2 ·
How Long Does It Take for Masses to Move 2.6m Using a Pulley System?
- PhrozenN
- · Replies 4 ·
History of the shear modulus definition
- RCulling
- · Replies 4 ·
Current as a function of time in a solenoid
- Linus Pauling
- · Replies 9 ·
Electric Fields and Kinetic Energy of protons
- hirschy
- · Replies 1 ·
Problem: Rotational Kinematics; Moment of Inertia
- m2010
- · Replies 2 ·
Finding the Net Torque on a Rotating Cylinder
- Bearbull24.5
- · Replies 2 ·
Energy stored and # turns in an MRI machine (solenoid)
- Linus Pauling
- · Replies 4 ·
How to Calculate the Length of Wire Needed for a Solenoid?
- dpeagler
- · Replies 1 ·
What indicates that particles also posses a wave nature?
- Jimmy25
- · Replies 4 ·
Potential energy and proton acceleratoin
- physics100000
- · Replies 7 ·
Uniform plank - Supporting force
- mybrohshi5
- · Replies 9 ·
Solving for Distance with Constant Acceleration: d=Vave*t
- bajwa1
- · Replies 1 ·
Photoelectric Effect True/False
- wilso842
- · Replies 1 ·
Calculating orbital speed/period
- ARJewell
- · Replies 1 ·
Velocity of student after throwing an object on frictionless surface
- moe6142
- · Replies 1 ·
How can I solve two fluid problems involving a raft and pressure?
- insideout
- · Replies 3 ·
How Do You Calculate Tension and Acceleration in a Two-Body Pulley System?
- moe6142
- · Replies 1 ·
Tomato, Salt water and Olive oil
- huybinhs
- · Replies 2 ·
Skier going down a 20 m high hill with initial velocity 5 m/s
- peyton
- · Replies 4 ·
Simple Capacitor Problem making a Big Problem
- nonequilibrium
- · Replies 1 ·
Half Life Questions: Solving Physics 30 Issues
- dev-hud
- · Replies 2 ·
Linear speeds at points on Earth
- balletgirl
- · Replies 7 ·