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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A pulley with a mass on a string
- Biker
- · Replies 5 ·
LCR series circuits and average power
- physicsStudent00
- · Replies 10 ·
Equilibrium of pistons with different radii (Hydraulics)
- Z3nt4r0
- · Replies 11 ·
How do I find the the coefficient for kinetic friction given
- bgt
- · Replies 7 ·
(Spring constant) I can't figure out what I did wrong.
- Winvoker555
- · Replies 3 ·
Distance of two moving particles
- Oomph!
- · Replies 2 ·
Projection at an angle - throwing stones
- Oomph!
- · Replies 5 ·
Relativistic Doppler Shift for Transverse Movement
- L_landau
- · Replies 1 ·
What is the velocity due to gravity between two point masses?
- cromata
- · Replies 5 ·
Creating a Wind Tunnel Simulation: Where to Begin?
- Samarth Bajaj
- · Replies 1 ·
Determining Parameters of a Transverse Harmonic Wave
- ashlieketchum
- · Replies 3 ·
Question Regarding Circular Motion and Normal Forces
- Chan M
- · Replies 2 ·
Electric field above an off-center finite line charge
- Phezik
- · Replies 5 ·
Fraction within a fraction -- Units
- Dindimin09
- · Replies 3 ·
How Do You Calculate µB Using Quantum Mechanics Equations?
- jasonchiang97
- · Replies 1 ·
How can I find the length of this pole?
- GaussianSurface
- · Replies 1 ·
How does the kinetic energy of a swinging ball change with respect to height?
- Rainbowbarf756
- · Replies 21 ·
Calculating g with known time intervals
- dantechiesa
- · Replies 15 ·
Limitations of Young's double slit experiment
- iambadatscience
- · Replies 3 ·
Find v(z) given volume charge density
- derek l
- · Replies 1 ·
Electric field inside non-conducting spherical shell
- Tiago3434
- · Replies 5 ·
Work done by gravity and by a spring
- EmmanuelE
- · Replies 11 ·
Relative Intensity of Various Light Sources - Lab Experiment
- K_Physics
- · Replies 1 ·
Archimedes' Principle and a weather balloon
- a129
- · Replies 1 ·
Maximum height reached by object released from a vertical spring
- Happiness
- · Replies 6 ·
Mechanical energy of a block sliding on a circular path
- CGandC
- · Replies 20 ·
Force in Center of Mass frame equaling zero
- CGandC
- · Replies 7 ·
Understanding Beat Frequencies in Sound Waves
- Sho Kano
- · Replies 3 ·
I got bored and did something with the dielectric constant
- Eclair_de_XII
- · Replies 4 ·
How to Calculate Work of Isothermal Magnetization?
- TristanJones
- · Replies 5 ·
Radius of a planet with the same density as Neptune
- PhyiscsisNeat
- · Replies 13 ·
How many places of maximum loudness?
- Sho Kano
- · Replies 18 ·
Find the max speed so that an electron doesn't hit the plate
- Whiteclaws
- · Replies 3 ·
Maximum speed before string breaks in circular motion
- physics1890
- · Replies 4 ·
A child slides down the helical water slide AB (Polar Coordinates)
- Alexanddros81
- · Replies 7 ·
Electricity: electric field in a point Between Two Charges
- Epoch
- · Replies 4 ·
Resistance and capacitance in LCR circuits
- physicsStudent00
- · Replies 10 ·
Elevator Problem: Determining Scale Reading for a Moving Object
- Masrat_A
- · Replies 5 ·
Friction between sled and rider
- SillyYak
- · Replies 7 ·
What forces act on a bird sitting on a sagging wire?
- iluvfisics
- · Replies 7 ·
What is the Relationship Between Tension and Velocity in a Vibrating String?
- Sho Kano
- · Replies 2 ·
Feynman Lectures 1.9: air molecules, mass, and mean free path
- CalebB-M
- · Replies 3 ·
Energy in each cycle of transverse wave?
- Sho Kano
- · Replies 2 ·
Why does having a high input impedance and low output impeda
- alexdr5398
- · Replies 4 ·
Why does Kirchhoff's current law only use entering and leaving, not directions?
- YoshiMoshi
- · Replies 1 ·
Finding Rref in a current mirror for Vcc=8V and Icopy=0.38mA
- Cocoleia
- · Replies 2 ·
Question on corner and resonant frequencies
- Mohamed Abdul
- · Replies 1 ·
Maxima in a diffraction grating
- L_landau
- · Replies 2 ·
Obtaining Acceleration from Position vs Time graph
- aleronLolli
- · Replies 3 ·
Capacitor - Least squares fitting
- Woozah
- · Replies 1 ·
Finding the Capacitance of a Conducting disc
- RJLiberator
- · Replies 3 ·
Calculating Final velocity and distance
- Burke
- · Replies 14 ·
Angle of maximum range for projectile with air resistance and wind
- ficku1
- · Replies 4 ·
Understanding Newton's Third Law in Action: A Truck Pushing an SUV
- eglaud
- · Replies 4 ·
What is the Maximum Temperature for a Copper Block at 1000 atm Pressure?
- Muthumanimaran
- · Replies 3 ·
Why Doesn't the Second Momentum Interpretation Work for the Rocket Sled?
- ecoo
- · Replies 6 ·
How Do You Calculate Electric Potential for a Given Charge Distribution?
- RJLiberator
- · Replies 20 ·
Calculating Gravitational Potential
- Jimmy87
- · Replies 3 ·
Simple Special Relativity Problem of Length Contraction
- dchartier
- · Replies 1 ·
Vertical cables in a suspension bridge
- OmegaKV
- · Replies 1 ·
What is the Direction and Moment of This Diagram?
- Bobs
- · Replies 1 ·
What does "find the time dependence of velocity" mean?
- Martyna
- · Replies 2 ·
What Is the Correct Approach to Solve This Bra-Ket Equation?
- grandpa2390
- · Replies 1 ·
Why did my water contract when exposed to rapid temperature change?
- David89
- · Replies 7 ·
Finding the Acceleration of masses on a pulley
- rodrale25
- · Replies 1 ·
Which string has more tension: 50g hanging mass and two carts on pulley
- Huski
- · Replies 7 ·
Field gradient in a 50-cm Stern-Gerlach magnet for silver atoms
- grandpa2390
- · Replies 3 ·
Isentropic process (temperature and pressure relationship)
- yecko
- · Replies 3 ·
Launch angle and horizontal distance for projectile at 90 m/s
- Anonymous_001
- · Replies 15 ·
Calculating Coefficient of Lift: Angle of Attack of 7°
- yecko
- · Replies 2 ·
Find angle between displacement and velocity vector
- soupleaf
- · Replies 3 ·
Solving sin θ - u cos θ = x for theta
- thejosh
- · Replies 6 ·
Passenger train braking distance before collision with freight train
- pow
- · Replies 1 ·
How rubbing a needle on a magnet affects its polarity
- UserOfPhysics
- · Replies 5 ·
Finding potential on z-axis for charged disc with opposite-sign annulus
- RJLiberator
- · Replies 27 ·
Distance of box pushed up incline by spring
- anothertangent
- · Replies 1 ·
Calculating Electric Field and Force in Vector Manipulation Problem
- Noreturn
- · Replies 11 ·
AP PHYSICS 1 Kinematics falling with deceleration
- pow
- · Replies 1 ·
Calculating the height of a cliff given only time to the splash
- KiwiThief
- · Replies 8 ·
Mass point sliding down a sphere
- Cepterus
- · Replies 23 ·
Normal force on 250-kg crate with horizontal force on inclined plane
- Bob Johnson
- · Replies 1 ·
Why is it necessary to derive the given velocity
- Miliman13
- · Replies 8 ·
Calculate strength of the electric field at indicated point
- prokaryote
- · Replies 5 ·
EMF and internal resistance laboratory work
- isorounded
- · Replies 4 ·
Change in r-hat by change in theta
- Storm6436
- · Replies 3 ·
Calculating Amplitude and Acceleration in Harmonic Motion - Physics Homework
- johan146
- · Replies 6 ·
What happens to the electric field's phase upon reflection?
- Gabriel Maia
- · Replies 2 ·
What is the initial velocity of a ball falling in Earth's gravity?
- Orson
- · Replies 19 ·
What is the relationship between critical angle and negative refractive index?
- Tanishq Nandan
- · Replies 6 ·
Calculating Kinetic Friction Coefficient for Sliding Soccer Player
- kdrobinson
- · Replies 13 ·
Biomechanics question vertical velocity
- Rachel79
- · Replies 2 ·
Calculating Distance for a Train on a 1% Grade
- A_Sushi
- · Replies 4 ·
How Does Mass Loss Affect Acceleration in Atwood's Machine?
- ScreamingIntoTheVoid
- · Replies 13 ·
Time period of small oscillations of the point dipole
- sid0123
- · Replies 52 ·
How Many Sig Figs Given Error Range?
- Cosmophile
- · Replies 2 ·
What time did they both set off?
- GoghAway
- · Replies 3 ·
How to differentiate b/w a conservative/non-conservative force?
- SciencyBoi
- · Replies 3 ·
Why use constant pressure specific heat when pressure varies
- yecko
- · Replies 3 ·
Components of the equivalent moment at a point
- Davidf77
- · Replies 3 ·