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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Calculating Total Internal Energy for a Monatomic Gas at Constant Pressure
- john mcgrain
- · Replies 4 ·
Why Does a2 Equal m1g/m2 in an Accelerating Pulley System?
- CausticPhantom
- · Replies 3 ·
Average pressure from hailstones hitting a window at 45 degrees
- grandpa2390
- · Replies 14 ·
Calculate the net force acting on the object
- roguekiller93
- · Replies 5 ·
Tension and angle of cord connecting two beads on a triangular wire frame
- xxglamisxx
- · Replies 11 ·
Energy Conservation: K0 + V0 = K1 + V1
- nysnacc
- · Replies 4 ·
Which Rule is Correct for Determining the Direction of Lorentz Force?
- physicsmaths1613
- · Replies 5 ·
Box sliding down frictionless 35° slope: force components and acceleration
- late347
- · Replies 8 ·
Finding Acceleration and Stopping Time in a Multi-Block Lifting System
- ChrisBrandsborg
- · Replies 2 ·
Finding uncertainty of a measurement
- cmkluza
- · Replies 1 ·
Heating water in a kettle (time, boil out time, work done)
- moenste
- · Replies 18 ·
Circular Motion: What's the Source of Centripetal force in this?
- vinci
- · Replies 33 ·
Temperature Limits in Heat Conducting Piston Problem with Friction
- grassstrip1
- · Replies 1 ·
Rod moving at relativistic speed: length contraction and rotation
- adamaero
- · Replies 1 ·
What Speed Must an Electron Achieve to Orbit a Charged Glass Sphere?
- tomizzo
- · Replies 7 ·
How to Calculate Heat Current in a Spherical Shell?
- TheDemx27
- · Replies 6 ·
Atwood machine: what mass M keeps the system stationary?
- Ryan95
- · Replies 3 ·
Earth orbit -- geosynchronous orbit calculation
- nysnacc
- · Replies 9 ·
Problem about motion -- vertical projectile motion
- Keith Gellar
- · Replies 2 ·
Justification for 0 net E field within a charged shell
- Old_sm0key
- · Replies 10 ·
Find the initial velocity of the package relative to the ground
- Kpgabriel
- · Replies 18 ·
Calculating Electric Potential on a Conducting Sphere with a Point Charge
- Phhysics Lover
- · Replies 3 ·
Rearranging Q=mc(T2-T1) to solve for T1 and T2
- Noah159
- · Replies 12 ·
Solving Diffraction Grating Angle: Can it be 90°?
- tenzinlhazey
- · Replies 2 ·
Light hours special relativity time dilation
- adamaero
- · Replies 1 ·
How Fast Does Temperature Rise in an Unventilated Silicon Circuit?
- Pao44445
- · Replies 12 ·
What Is the Ideal Resistor Value for a Diode Circuit Using Load-Line Analysis?
- kenef
- · Replies 3 ·
Steady State Solution of Forced, Damped Harmonic Oscillator
- transmini
- · Replies 9 ·
Finding initial velocity of a cat jumping through a hoop
- Brianna I
- · Replies 1 ·
Calculating Wavelength Using Diffraction Grating
- adamaero
- · Replies 17 ·
How to graph amplitude vs. frequency for a Low-Pass Filter?
- eroc1002
- · Replies 3 ·
How Do You Calculate Frictional Force in a Braking Scenario?
- Lami
- · Replies 2 ·
Two stars rotating about a centre of mass -- Find speed
- moenste
- · Replies 11 ·
Expressing force in cartesian vector form
- Robb
- · Replies 11 ·
What is the Maximum Ratio of m1 to m2 to Keep m1 Stationary in a Pulley System?
- Karol
- · Replies 10 ·
Two masses connected by a weighted rope pulled vertically
- Owen443
- · Replies 5 ·
How long to stop a baseball with a tractor beam?
- Ashleykins
- · Replies 3 ·
Calculations with final result in electronvolts
- barbapapa
- · Replies 2 ·
Finding largest value of H of a ramp, from a FBD
- Alison A.
- · Replies 24 ·
How is there no net force in this situation
- Rasiel
- · Replies 4 ·
Displacement given position function at time t
- Robophys
- · Replies 2 ·
Body on a spring: expression for the period T
- moenste
- · Replies 1 ·
What is the Speed of a Particle After Acceleration?
- nick4945
- · Replies 2 ·
How Is the Period of a Pendulum Affected by Its Length?
- Ethxn
- · Replies 7 ·
Electric field inside and outside a charged cylinder
- Taylor T
- · Replies 8 ·
Determining beta as a function of relativistic momentum
- Elvis 123456789
- · Replies 1 ·
Petrol overflowing from steel tank when heated from 20°C to 35°C
- Pao44445
- · Replies 8 ·
How Does Tension Vary Along a Whirling Rope?
- decentfellow
- · Replies 22 ·
Archived Adiabatic expansion in a steady flow question
- wilkie610
- · Replies 2 ·
Does mislabeled lighter weights give a higher or lower spring constant?
- physicaled
- · Replies 3 ·
Particle moving with simple harmonic motion
- moenste
- · Replies 8 ·
Particle shot from a height h on Earth
- Dustgil
- · Replies 4 ·
Solve 1-D Motion Problems: Homework Statement
- Tchao
- · Replies 8 ·
Sign convention problem in momentum calulations
- Fariaz Haque
- · Replies 5 ·
Change in length due to temperature
- chetzread
- · Replies 132 ·
Special Relativity simultaniety
- PhysicsInNJ
- · Replies 5 ·
When will the house be flooded?
- GwtBc
- · Replies 6 ·
How Do Insulators Handle Electron Removal and Addition?
- Mykhalo P
- · Replies 2 ·
Ratio of the periods of a damped and undamped oscillator
- Dustgil
- · Replies 7 ·
How Does the Capstan Equation Derive Rope Tension?
- Mr Davis 97
- · Replies 32 ·
How Do You Determine Superman's Initial Velocity in a 2D Momentum Problem?
- Walter White
- · Replies 26 ·
Change in the internal energy of an isobaric process
- Stendhal
- · Replies 2 ·
Finding the angle of refraction
- RabbitWho
- · Replies 11 ·
Amplitude of an undamped driven harmonic oscillator
- Destroxia
- · Replies 12 ·
A ball is shot from the ground into the air
- Kpgabriel
- · Replies 4 ·
Understanding and Solving Vertical Structure Stress Equations
- yui859126455
- · Replies 4 ·
Three forces on bracket with resultant along x' axis
- Robb
- · Replies 13 ·
Derive an expression for the angle φ (Kinematics Problem)
- JohnTravolski
- · Replies 17 ·
Measuring Height of Meniscus in Capillary Action
- Cogsy
- · Replies 1 ·
Separating vector differential equation into components
- Dustgil
- · Replies 2 ·
Definition of centripetal force
- MBBphys
- · Replies 3 ·
Ball speed at the top of the loop
- moenste
- · Replies 5 ·
How to Calculate Angular Displacement in Circular Motion?
- kittycat342
- · Replies 10 ·
Incline angle for accelerating cart and Tensions in strings for a suspended mass
- JAZZ541
- · Replies 2 ·
Finding Distance from the Origin Given Velocity Graph
- pocketofcandy
- · Replies 4 ·
Why impact velocity exceeds average velocity in rocket landing
- AdeptDz
- · Replies 15 ·
Reaction between a track and a ball at a point
- moenste
- · Replies 10 ·
How to describe proton-rich nucleus changes in positron emission
- LotusTK
- · Replies 2 ·
Find magnitude of two velocities, with one at an angle?
- Brianna I
- · Replies 13 ·
Acceleration from x vs. t graph
- Ben50275
- · Replies 7 ·
Braking speed and distance traveled
- emily081715
- · Replies 12 ·
Large oscillations of pendulum
- Hamal_Arietis
- · Replies 7 ·
Kepler's Third Law and Motion of Two Point Masses
- zxcvbnm
- · Replies 8 ·
Calculating Voltage and Current in a Series Circuit
- Adeel Ahmad
- · Replies 10 ·
Circula motion under an attractive force
- Born
- · Replies 6 ·
Threshold Wavelength for Photoelectric Effect - 6.476103179e-19J
- KevinFan
- · Replies 7 ·
How Is Velocity Calculated When a Rod Falls onto a Mass Connected by a Spring?
- Hamal_Arietis
- · Replies 23 ·
What is the Equilibrium Position of a Pivoting Meter Stick?
- Hughng
- · Replies 9 ·
Simple Harmonic Oscillation of Balance Wheel in a Clock
- Hughng
- · Replies 18 ·
Syringe: Find force given volume and pressure
- kamhogo
- · Replies 2 ·
Kinematics passing cars problem
- Amphetamxne
- · Replies 5 ·
How Do You Calculate Initial Velocity and Maximum Height in Projectile Motion?
- Veronica_Oles
- · Replies 6 ·
Special Relativity Question (Lorentz)
- RJLiberator
- · Replies 12 ·
Angular Acceleration of a sprinter
- Goalie29
- · Replies 18 ·
Finding forces on +q between two -q charges with Taylor expansion
- Decadohedron
- · Replies 12 ·
Dart thrown horizontally hits point below target in 0.20 s
- Kpgabriel
- · Replies 5 ·
Minimum and maximum speeds on a banked curve with friction
- Mr Davis 97
- · Replies 12 ·
Electric flux through cube sides with E = -5x E₀/L i + 3z E₀/L k
- Blockade
- · Replies 2 ·
Finding resultant force magnitude and direction from component forces
- Robb
- · Replies 2 ·