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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Constant force acting on a particle
- Vibhor
- · Replies 4 ·
Effeciency and Current Relationship
- TKrantz
- · Replies 7 ·
What is the potential difference between two concentric charged spheres?
- i_hate_math
- · Replies 1 ·
Not getting right answer in force problem
- sharpnova
- · Replies 17 ·
1 dimensional problem, from Yale online physics course.
- ElectricRay
- · Replies 4 ·
Projectile Motion- Incline vs. Horizontal Surface
- phzzo
- · Replies 12 ·
Archived Rotational Motion -- a hollow ball rolls down a ramp
- Homerr
- · Replies 6 ·
What Are the Accelerations and Tensions in a Double Atwood's Machine System?
- Bray__
- · Replies 8 ·
Speed of block as cylinder reaches bottom of circular track.
- takando12
- · Replies 11 ·
A problem about friction with three blocks stacked together
- Prem1998
- · Replies 5 ·
Proof -- motion under a central force in text Symon Mechanics
- kylinsky
- · Replies 2 ·
Is voltage drop different in parallel circuits?
- TonyG247
- · Replies 5 ·
How do I calculate the extension and strain at peak load?
- ipocoyo
- · Replies 1 ·
Three stacked blocks with friction, force applied to each
- Prem1998
- · Replies 1 ·
Diameter of hole vs time to submerge
- jackkk
- · Replies 8 ·
Radius of Curvature to Correct Myopia
- TeslaCoil137
- · Replies 3 ·
Doppler effect of a satellite (extended)
- rohanlol7
- · Replies 6 ·
Two equal positive charges are held fixed and separated by d
- Hamdi Allam
- · Replies 9 ·
Finding original speed when kinetic energy doubles after 2 m/s increase
- Mr.maniac
- · Replies 8 ·
Signs in the equation, angular acceleration
- Bauxiet
- · Replies 2 ·
Specific heat for a triatomic gas
- Titan97
- · Replies 2 ·
Instantaneous center of rotation
- Bauxiet
- · Replies 10 ·
Equivalent resistance of pentagon of resistors
- rohanlol7
- · Replies 13 ·
Measuring young's modulus from simple harmonic motion
- TheCapacitor
- · Replies 1 ·
Finding friction without coefficient?
- kelseybrahe
- · Replies 88 ·
Banked roads -- circular motion and gravitation
- MPat
- · Replies 11 ·
Cooling 128 cups with a 30 amp unit from a 5 amp baseline
- Tylercc
- · Replies 23 ·
What are the currents at each resistor?
- chuvacjoe
- · Replies 8 ·
A problem with Newton's mechanics
- m0urazz
- · Replies 12 ·
Vector resultant when angle is 120°
- gracy
- · Replies 14 ·
Vector Motion and Perpendicular
- NaukowiecGirl
- · Replies 11 ·
Vector question - North-east direction
- gracy
- · Replies 38 ·
Resultant of two vectors of equal magnitude
- gracy
- · Replies 3 ·
Finding Polarization Components of an Electric Field Vector
- Phalguni
- · Replies 2 ·
Finding Binding Force in Falling Disk System with Lagrange Equations
- Vrbic
- · Replies 2 ·
Can three forces of 10 N, 10 N, and 25 N have zero resultant?
- gracy
- · Replies 25 ·
What is the significance of a minus sign in kinematics equations?
- Bauxiet
- · Replies 13 ·
Infinitely charged wire and moving charge
- jiho.j
- · Replies 1 ·
What is the Correct Tangent Angle for Calculating Force on a Cylinder?
- Bauxiet
- · Replies 8 ·
Virtual image on the perpendicular
- RabbitWho
- · Replies 2 ·
Einstein Coefficients - Laser Beams
- Ivor Denham
- · Replies 1 ·
Rate of gas leakage through small hole
- rohanlol7
- · Replies 10 ·
Trajectory of pendulum in frame of rotating disk under it
- PyHop
- · Replies 1 ·
Point source of light, opaque screen with hole. photodiode problem
- Screwdriver
- · Replies 5 ·
Hard Momentum problem (Force on blades for turbine)
- rohanlol7
- · Replies 11 ·
Ball being hit starts to slide and roll
- Karol
- · Replies 59 ·
A pressure cooker cooks a lot faster than an ordinary pan by
- osb61
- · Replies 2 ·
Simple Conservation of energy question
- Derek1997
- · Replies 40 ·
Uniform E field for spherical shell.
- GwtBc
- · Replies 1 ·
Kinematics Question on falling rock
- Riju
- · Replies 1 ·
Relativistic speed of a particle
- harpf
- · Replies 2 ·
How Does Charging Affect the Electric Field Inside a Metal Sphere?
- Iron_Man_123
- · Replies 3 ·
Non-central force and work done
- Samia qureshi
- · Replies 3 ·
What is the relationship between wavelength and compression in sound waves?
- Kanad
- · Replies 1 ·
Free particle wave function confusion.
- Oz123
- · Replies 1 ·
Difference between a bar pendulum and a simple pendulum
- Samia qureshi
- · Replies 4 ·
Archived Maxwell needle method and torsional rigidity formula derivation
- Outrageous
- · Replies 1 ·
Determine the rms value for the given function
- Northbysouth
- · Replies 2 ·
What Day Length Would Allow Objects to Float at the Equator?
- MPat
- · Replies 8 ·
Why the temperature of a moving jar of gas doesn't increase
- RubinLicht
- · Replies 11 ·
Circle area uncertainty with radius 3.1e4 cm
- JustynSC
- · Replies 7 ·
Velocity at t = 0.60 s for x(t) = 35cos(10πt)
- xxphysics
- · Replies 18 ·
Harmonic Motion and uniform disk of mass
- xxphysics
- · Replies 1 ·
Filament lamp model (derivation)
- rohanlol7
- · Replies 10 ·
Hard Circuit simplification problem
- rohanlol7
- · Replies 9 ·
Calculating Distance with Friction on an Icy Surface
- JAZZ541
- · Replies 3 ·
Remote sensing, Question from an old exam
- Firben
- · Replies 7 ·
Illustrating the Direction of a Current in a Magnetic Field
- thaalescosta
- · Replies 9 ·
Orbit: impulse making orbit spherical
- Halleluwah
- · Replies 3 ·
Why do different-sized conducting spheres share charge unequally?
- Fips
- · Replies 4 ·
A ball rolls on a horizontal table and drops. it hits the 0.
- JAZZ541
- · Replies 13 ·
Torque needed to rotate shaft in pipe?
- iokast
- · Replies 4 ·
Entropy in system of non-degenerate atoms
- vodkasoup
- · Replies 1 ·
Acceleration-time graph for jumping on a trampoline
- Sebkarp0
- · Replies 7 ·
Prove irreversibility in this quasi-static process.
- benny_91
- · Replies 11 ·
What is the minimum radius of curvature for a pilot flying at 1000 km/h?
- Plantatree123
- · Replies 5 ·
Position of particle in polar coordinates at t = T/8
- vaibhav garg
- · Replies 12 ·
What is the effect of light on the weight of a glass prism?
- rohanlol7
- · Replies 4 ·
Tension in two wires at unknown angles
- MickeyBlue
- · Replies 11 ·
Archived What is the entropy of mixing for a system of two monatomic ideal gases?
- Thadis
- · Replies 1 ·
Why Do We Not Calculate Angle Change in Plastic Container?
- SadPanda6022
- · Replies 8 ·
Calculating Distance: Free Body Diagram for Box Sliding with Friction
- Shehryar
- · Replies 1 ·
Proof of Kinematics Equation: Eliminating Time from the Equation
- PurelyPhysical
- · Replies 1 ·
Where do the 2/3 and 1/2 factors come from in this velocity problem?
- PurelyPhysical
- · Replies 5 ·
Kinematics problem (initial acceleration)
- rndaryam
- · Replies 3 ·
Is my reasoning valid for solving this weight tension problem?
- AXRY
- · Replies 10 ·
Asteroid deflected by Earth -- effect on Earth
- Dazed&Confused
- · Replies 9 ·
How does Earth's rotation impart eastward velocity to wind?
- Vibhor
- · Replies 8 ·
Zero B Field Inside within Hollow Wire
- Amrator
- · Replies 2 ·
Will a 15 kg box stop before hitting an open door 0.8 m away?
- Atkinson1988
- · Replies 6 ·
Magnetic force on electron and proton with same velocity
- Medtner
- · Replies 3 ·
Solid or hollow sphere rolling down an incline?
- Milo Martian
- · Replies 33 ·
Back emf and potential difference across an inductor in a circuit
- Clara Chung
- · Replies 4 ·
Is the Potential of a Negatively Charged Conductor Always Negative?
- Fips
- · Replies 2 ·
Problem following a demonstration
- Frank Einstein
- · Replies 3 ·
Rod rotating and hitting a mass
- Karol
- · Replies 9 ·
Thermodynamics rankine cycle problem
- Robax
- · Replies 2 ·
Hollow sphere half submerged in a liquid, find density
- Taniaz
- · Replies 13 ·
Solve for 2D Elastic Collision: Find θ & φ Angles
- amanda.ka
- · Replies 4 ·
Energy Loss in Plastic Scintillator
- Incand
- · Replies 8 ·