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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Circular Motion Regarding Car Sliding on a Curve
- Neek 007
- · Replies 3 ·
How to Derive the Oscillation Period of Water in a U-Tube?
- newtn46
- · Replies 7 ·
Calculating Maximum Deceleration of Re-entry Capsule
- spacemike1
- · Replies 4 ·
Centrifuge for astronaut training (tangential and normal acceleration)
- badaboom
- · Replies 26 ·
Refraction of Light: Isosceles Prism of 120°, Refractive Index 1.44
- harsh95
- · Replies 1 ·
Average force by ball on floor
- vissh
- · Replies 15 ·
Projectile with same initial and final height, and moon landing free body diagram
- narutodemonki
- · Replies 3 ·
Optics, interference, very unusual problem
- fluidistic
- · Replies 16 ·
Calculate Work Done by 12.6V Battery Supplying 2.0A for 10min
- sgoeke
- · Replies 1 ·
Which Photon Energy Can Overcome a 3.00 eV Work Function?
- sgoeke
- · Replies 10 ·
Capacitors in Series: Find Q on 1.0 μF Capacitor
- sgoeke
- · Replies 2 ·
What Path Do Particles Take in an Inelastic Collision?
- AntMantis
- · Replies 3 ·
Calc Volume Flow Rate of Water from Tap (45mm ht)
- coltsamuel96
- · Replies 8 ·
How do I solve for v0 from two equations with v and h?
- coltsamuel96
- · Replies 2 ·
Minimum velocity change to lower shuttle altitude to 60 miles
- wahoowa2012
- · Replies 1 ·
Integrating √(9X^4 + 9X^2) by substitution
- superkam
- · Replies 3 ·
Heat Generation in a circuit due to moving charges
- deepak-
- · Replies 2 ·
Finding the Center of Mass for a Loaded Ferryboat on a Square Raft
- fiziks09
- · Replies 8 ·
Why Does Pressure Decrease When Velocity Increases in a Constricted Pipe Area?
- acidandroid
- · Replies 3 ·
SHM and hole through the center of the Earth
- astenroo
- · Replies 8 ·
Keplerian beam expander output diameter?
- cdotter
- · Replies 4 ·
Thermodynamics 1st Law: reversible process for batteries?
- sparkle123
- · Replies 1 ·
Final temperature when 10 kg zinc at 68°C is added to 32 kg water at 14°C
- DrMcDreamy
- · Replies 3 ·
How many wavelengths are there now in one pulse?
- ravsau
- · Replies 1 ·
Finding position of oscillating particle at t=0.250 s from x=4.00 cos(3.00πt+π)
- MJay82
- · Replies 2 ·
Why does the last term detract from acceleration?
- Peter G.
- · Replies 4 ·
How Do You Calculate Tension and Force Components in a Supported Beam Scenario?
- emerica1254
- · Replies 11 ·
How Do First Class Levers Apply to Scissors?
- Peter G.
- · Replies 2 ·
Simple centrifugal force problem
- antonio glez
- · Replies 9 ·
Radioactive Decay: Proving Effective Half-Life of Nucleus
- roshan2004
- · Replies 4 ·
Centripetal force with circular motion
- catch-22
- · Replies 5 ·
Spring Problem- Unknown mass and constant
- C_Conrad8
- · Replies 1 ·
How much heat is needed for converting 7 kg of ice to steam?
- DrMcDreamy
- · Replies 6 ·
How to Calculate Spacing for Bridge Expansion with Linear Expansion Coefficient
- DrMcDreamy
- · Replies 5 ·
What is the displacement of a critically damped forced harmonic oscillator?
- Eggmans
- · Replies 1 ·
Doppler shift of absorption line from distant galaxy
- Airman
- · Replies 2 ·
Displacement crossed with velocity?
- Maybe_Memorie
- · Replies 1 ·
Movement in one and two dimensions, where finding Force in a problem
- Vinhster
- · Replies 2 ·
Momentum of exhaust gases and thrust from a 20,000kg rocket
- Spakfilla
- · Replies 1 ·
Does a pulse invert when reflecting into a faster medium?
- hss15
- · Replies 1 ·
Tangential force applied on a disc
- ebelviranli
- · Replies 3 ·
Neutron density for indium with isotope abundance
- matt222
- · Replies 1 ·
Speeds of waves in different media.
- hss15
- · Replies 2 ·
How Much Energy Does It Take to Boil 3 Liters of Water?
- northh
- · Replies 3 ·
How Do You Calculate Orbital Radius and Velocity for Different Orbital Periods?
- SuperNubCake
- · Replies 3 ·
Coefficient friction between a toboggan and the snow
- nasadall
- · Replies 1 ·
Cons. of momentum: person moves at angle atop free-to-move cart
- strangeeyes
- · Replies 2 ·
Figuring out angular velocity from θ = 2.0 + 4.0t^2 + 2.0t^3
- Stonem42
- · Replies 1 ·
What Is the Speed of Particle Q After the Collision?
- nasadall
- · Replies 3 ·
Impulse from a ball bouncing off a wall
- nasadall
- · Replies 7 ·
Spring question, how do I know it is negative or positive?
- flyingpig
- · Replies 5 ·
What is the minimum height of the bag needed for glucose infusion?
- DrMcDreamy
- · Replies 6 ·
Charge in a spherical conducting shell
- Markv
- · Replies 3 ·
Calculating Rotational Inertia and Yo-Yo Acceleration
- atm1993
- · Replies 1 ·
How Do You Calculate Velocities for a Hohmann Transfer Orbit?
- hb243
- · Replies 1 ·
Work to Construct Conducting Spheres
- Ferbs207
- · Replies 1 ·
Atomic/molecular level definition/description of density.
- TFGordon
- · Replies 2 ·
Finding friction force on a 800kg dragster accelerating to 350 km/h
- chengbin
- · Replies 1 ·
Gauge pressure at different depths in a 56 m reservoir behind a dam
- DrMcDreamy
- · Replies 5 ·
Location (x,y) when a Projectile Collides with a Slanted Wall
- Mator
- · Replies 15 ·
Calculating Gauge Pressure at the Bottom of a Test Tube
- DrMcDreamy
- · Replies 5 ·
Height of horizontal force on billiard ball given velocity change
- ippo90
- · Replies 5 ·
Acceleration due to gravity on a planet's surface
- cary5
- · Replies 11 ·
Problem involving static equilibrium
- issacnewton
- · Replies 10 ·
Unsolvable Puzzle: Can a Puck Stop in 0.42s?
- chengbin
- · Replies 2 ·
What is the mass of this object?
- chengbin
- · Replies 3 ·
Stopping in min. distance[friction]
- vissh
- · Replies 5 ·
Why doesn't a ball slow down when it hits a heavy wall?
- tennishaha
- · Replies 11 ·
What is the angle of incidence and reflection when facing a plain mirror?
- Help4458
- · Replies 1 ·
Transforming Four-Momentum between Inertial Frames
- Twoism
- · Replies 1 ·
Asteroid at 0.9c colliding with Earth in 2 hours
- rainbow90
- · Replies 3 ·
Finding torque/tension in pulley/block system.
- SteelDirigibl
- · Replies 4 ·
How Do You Solve the Diffraction Intensity Problem with Different Units?
- Precursor
- · Replies 4 ·
True or false: tennis sweet spot, altitude, mechanical advantage, power
- firyjade12
- · Replies 1 ·
Determining the Equation for an Underdamped Oscillating System
- trautlein
- · Replies 4 ·
Angular momentum; flying motorcycle
- MrRice5555
- · Replies 2 ·
Possible frequencies of an electron
- aurao2003
- · Replies 13 ·
Theoretical Question: Mass of Earth
- jmb88korean
- · Replies 2 ·
Time for capacitor voltage to reach 80% in RC circuit with parallel capacitors
- rickstar008
- · Replies 5 ·
Many car calculations, including torque and peak power
- SoftwareEng
- · Replies 1 ·
I cant seem to get this angular velocity problem right
- xxxixpats
- · Replies 2 ·
How Do You Calculate Changes in Gravitational Force and Weight?
- Neek 007
- · Replies 12 ·
Newton's 3rd Law Chair situation
- wooker
- · Replies 1 ·
Work Done by Friction Force: A 4.0 kg Block
- IKonquer
- · Replies 2 ·
Calculating Pressure and Steam Jet Velocity in a Boiling Pot
- tweety1234
- · Replies 1 ·
Linear thermal expansion and work done
- dogman1234
- · Replies 3 ·
How do you convert temperature differences between Celsius and Kelvin?
- lizlyn
- · Replies 2 ·
Need Notes for Class 11 NCERT Book [Physics]
- christiano
- · Replies 3 ·
Faraday's law and perpetual motion
- Princess19
- · Replies 5 ·
Coaxial cable problem, electric field strength?
- roccofitz
- · Replies 6 ·
Baseball problem Impulse-Momentum
- Anarion
- · Replies 4 ·
How to find Uab and Ucd in this circuit
- dado
- · Replies 4 ·
Solve 3 Optic Problems in 2 Days
- djanisf
- · Replies 4 ·
Finding wave speed and refraction angle for 75 Hz source
- vividcolours
- · Replies 1 ·
Angular Velocity and Angular Frequency
- zhaos
- · Replies 1 ·
The sum of torques is not the sum of torques?
- flyingpig
- · Replies 8 ·
Magnitude of momentum of electrons
- sanalsprasad
- · Replies 1 ·
Where Should Charge C Be Placed to Achieve Zero Net Force?
- I Like Pi
- · Replies 18 ·
AC generator in an LRC circuit: rms voltage, maximum current, phase difference
- popo902
- · Replies 4 ·
How is Work Potential Destroyed in Heat Transfer Between Reservoirs?
- mullzer
- · Replies 18 ·