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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Find the equation of state of each gas
- curious_mind
- · Replies 4 ·
Scarf modelled as a pulley system - questioning the mass ratio
- laser
- · Replies 3 ·
Challenging problem about an impact with a smooth frictionless surface
- pepos04
- · Replies 55 ·
Energy of a water tank with compressed air
- davidpele
- · Replies 5 ·
Inflating a Balloon (elastic balloon vs. paper balloon)
- lily001
- · Replies 8 ·
Why tension and weight resolution gives different results in equilibrium
- laser
- · Replies 4 ·
The biomechanics of elbow extension
- thegoose
- · Replies 1 ·
Minimum force required to keep two blocks from not falling
- nafisanazlee
- · Replies 4 ·
Derivation of angular velocity using the unit circle
- jnuz73hbn
- · Replies 5 ·
Optimal boom attachment point to prevent crane overturning
- eitan77
- · Replies 23 ·
How Does Induced Current Change with Loop Acceleration Through a Magnetic Field?
- ChuFta
- · Replies 8 ·
T-shaped pendulum total mechanical energy
- Nate
- · Replies 8 ·
Conservation of Energy with Gravitational Potential Energy
- zachary570
- · Replies 6 ·
Why combining two 12V batteries in parallel gives 12V, not 24V
- Maghraby
- · Replies 16 ·
Static vs Kinetic Friction on an Unbanked Ramp
- mancity
- · Replies 3 ·
Why does integrating a disc as rods give different MOI than rings?
- Aurelius120
- · Replies 15 ·
Achilles tendon force and ankle joint reaction force from gait analysis
- By55
- · Replies 7 ·
Would one be pushing as much as their weight?
- biomajor
- · Replies 3 ·
Confusion in using the continuity equation here
- tracker890 Source h
- · Replies 4 ·
Are grad, div and curl vector operators?
- MatinSAR
- · Replies 22 ·
White light passing through prism
- hendrix7
- · Replies 4 ·
Speed of a mass falling into a star given the mass and radius of the star
- TobiasZed
- · Replies 2 ·
Calculate the focal length of a thin convex lens
- Lotto
- · Replies 19 ·
Friction Forces on 2WD vs 4WD Vehicles
- danielsmith123123
- · Replies 6 ·
Different sunset times due to elevation ##h## at a point on the Earth
- brotherbobby
- · Replies 13 ·
Conservative forces in circular motion?
- disjk47
- · Replies 19 ·
Semi-infinite + finite potential well QM
- Kyuubi
- · Replies 2 ·
Calculating the Average speed given two speeds
- jnuz73hbn
- · Replies 20 ·
Distance traveled when decreasing velocity
- brslagle
- · Replies 8 ·
How Do Two Rotating Rods Interact?
- eitan77
- · Replies 31 ·
What is the right formula to use in this context? (momentum conservation)
- El foolish Phenomeno
- · Replies 11 ·
Ping pong ball projectile launcher stuck at 5m range
- SSKscioly
- · Replies 38 ·
Does Heating a Metal Wire Change Its Properties?
- eitan77
- · Replies 15 ·
100 meter dash when one runner starts 3 seconds later
- jnuz73hbn
- · Replies 14 ·
How to correctly round in physics?
- Lotto
- · Replies 8 ·
Spring with mass hangs from the ceiling
- MatinSAR
- · Replies 22 ·
Electric field between capacitor plates when a dielectric slab is inserted
- Rhdjfgjgj
- · Replies 14 ·
Understanding Ultrasound and Aluminum Plate Interaction: Factors to Consider
- ChrisCOD
- · Replies 1 ·
Is the Molar Specific Heat of Air Similar to Hydrogen?
- Karfen
- · Replies 2 ·
Mathematical model for drag on tether
- Tobi9242
- · Replies 27 ·
Thermodynamics - Hot copper block dropped in ice water
- nighfallraid
- · Replies 9 ·
Why is there a resistor in a MOSFET-based inverter?
- zenterix
- · Replies 9 ·
Net force on a wheel with three forces at different angles
- omal3rab
- · Replies 4 ·
Spring constant formlula for Force and Work Done
- danielsmith123123
- · Replies 12 ·
Graphing the Superposition of Two Standing Waves
- TRB8985
- · Replies 8 ·
I have a Lab Report on Centripetal Force
- star123
- · Replies 1 ·
If tension provides the torque to this pulley, what is its equation?
- haseebaslam
- · Replies 5 ·
Movement of the water level in the barrel - calculate its velocity, etc.
- Lotto
- · Replies 11 ·
Conservation of energy and momentum for a bullet fired into a block
- defetey
- · Replies 1 ·
What is a focal length of a thin convex lens?
- Lotto
- · Replies 9 ·
Height of a stable droplet on a perfectly wetting surface
- Hak
- · Replies 63 ·
Why Does the Force Meter Show Different Readings in Similar Situations?
- Iamconfused123
- · Replies 6 ·
Solving for Masses in an Atwood Machine
- Venturi365
- · Replies 8 ·
Kirchhoff's law: Find the current I3 through the Amp meter
- skibidi
- · Replies 4 ·
Calculations for accelerating particles in a Cyclotron
- sss1
- · Replies 3 ·
Average Angular Acceleration of a Music CD over 75 minutes
- mcarloni
- · Replies 7 ·
Is My Understanding of Angular Momentum and Trigonometry Correct?
- Xuran Wu
- · Replies 3 ·
The period of a simple pendulum
- guv
- · Replies 20 ·
What minimum speed do we need to give a charged ball?
- Lotto
- · Replies 12 ·
Graphically determining the focal length of a converging lens
- ilovemycat
- · Replies 4 ·
Two networks described by v-i graph: Find voltages when interconnected
- zenterix
- · Replies 1 ·
Why ignore the wire's weight torque in a static equilibrium problem
- TRB8985
- · Replies 5 ·
Find the Electric field due to an electric dipole at the origin
- MatinSAR
- · Replies 12 ·
Why do I keep getting friction coefficient as a negative?
- Iamconfused123
- · Replies 17 ·
Two equations "combined" don't give the desired result
- nomadreid
- · Replies 3 ·
Electrons enter charged capacitor
- Xuran Wu
- · Replies 1 ·
Does friction depend on horizontal force or on motion?
- Venturi365
- · Replies 7 ·
Classical mech. - inelastic collision
- areverseay
- · Replies 12 ·
Find the unkown tensions and masses in the situation below
- Venturi365
- · Replies 8 ·
Is Solar Radio Flux dependent on Spectral Class?
- yannick7
- · Replies 6 ·
The normal force on a thin stick being lifted on a surface
- guv
- · Replies 95 ·
Magnetic Field due to a curved wire
- Dewgale
- · Replies 3 ·
What was the mistake in solving for the speeds of two marbles after a collision?
- anotherphysicsgeek
- · Replies 5 ·
Why is the square root of x^2 = |x|?
- Ebby
- · Replies 14 ·
Finding an open-cicuit voltage, why is resistor in series ignored?
- justin___
- · Replies 2 ·
What helium mass in a balloon to make it bouyant in air?
- Lotto
- · Replies 12 ·
Graphing Elastic Potential Energy
- TRB8985
- · Replies 10 ·
Why Isn't the Right Side Negative in a Vertical Spring-Mass System Equation?
- Ark236
- · Replies 3 ·
Point particle model for a person pushing a block on ice
- salqmander
- · Replies 26 ·
What Are the Differences Between Black Body Radiation Formulas?
- sss1
- · Replies 5 ·
Misunderstanding Work-energy theorem and center of mass properties
- physicsissohard
- · Replies 7 ·
Tension in a string being pulled from both ends
- AAAA
- · Replies 48 ·
Gravitational acceleration at different distances from Earth's center
- help6
- · Replies 4 ·
Brownian ratchet with temperature difference
- Hak
- · Replies 32 ·
Wavelength of traveling wave on string (one end clamped and one end free)
- Dalip Saini
- · Replies 3 ·
Physics puzzle about the concentration of fog droplets in the air
- Hak
- · Replies 26 ·
Showing Complex Vectors are Orthonormal
- Crush1986
- · Replies 13 ·
Oscillation of free surface of water in parallelepiped container
- charie
- · Replies 13 ·
Find the diameter of the piston at certain heights
- sgk777
- · Replies 7 ·
Conservation of momentum for a robot on a space platform
- resurgance2001
- · Replies 2 ·
Oscillation with friction - Analytical mechanics
- NODARman
- · Replies 2 ·
Calculating the central temperature of the Sun using the ideal gas law
- accalternata
- · Replies 1 ·
Projectile motion when only given distance and acceleration
- James1019
- · Replies 15 ·
Projectile motion only provided acceleration diatance
- James1019
- · Replies 3 ·
Work done in a chamber with gas undergoing adiabatic free expansion?
- zenterix
- · Replies 13 ·
Confusion on product rule for mass of differential volume element
- TRB8985
- · Replies 4 ·
Is my understanding of nuclear fusion and binding energy correct?
- sss1
- · Replies 1 ·
Maximum speed on a vertical banked curve (well of death)
- NTesla
- · Replies 68 ·
Gauss' law and Faraday cage problem
- sss1
- · Replies 10 ·
Pulley system and energy conservation?
- Sagrebella
- · Replies 22 ·