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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Mass of fish yanked out of water at 2 m/s²
- MorganJ
- · Replies 18 ·
Calculating Reaction Forces and Maximum Bending Stress in Simply Supported Beams
- Emzielou83
- · Replies 20 ·
Finding spring constant for ball balanced between two springs
- dance_sg
- · Replies 7 ·
How Is Thrust Calculated for a Jet Engine in a Lab Test?
- controlfreaks
- · Replies 7 ·
Simple Moment of Inertia problem
- controlfreaks
- · Replies 7 ·
What is the parachutist's position after 10 seconds?
- controlfreaks
- · Replies 2 ·
Volume, moles, density, molar mass =>separation of molecules
- FelixISF
- · Replies 3 ·
Deriving g from projectile passage times through two heights
- GSV
- · Replies 8 ·
How does wavelength change when wave speed doubles at constant frequency?
- boomerwilliam
- · Replies 7 ·
Harmonics of a Noon Hour Whistle in a Closed Air Column
- dance_sg
- · Replies 14 ·
How do I determine the energy of a charge at infinity?
- Rajat jaiswal
- · Replies 3 ·
Understanding Central Forces in Polar Coordinates
- AntiStrange
- · Replies 2 ·
How is the Equilibrium Height of a Ball Determined Using Spring Constants?
- dance_sg
- · Replies 5 ·
What Is the Elevator's Z Acceleration When Your Apparent Weight Is Half?
- gtaylor
- · Replies 1 ·
Calculating the Upward Force Necessary to Balance a Plank
- gtaylor
- · Replies 1 ·
Calculating (1.4 x 106 m/s)2 - (3.5x104 m/s)2
- bumblebeeliz
- · Replies 11 ·
Drag Force verse force of gravity
- gtaylor
- · Replies 1 ·
How Does a Submerged Stone Affect Balance Scale Readings?
- vinirn
- · Replies 7 ·
Specific heat capacity, latent heat => ice water steam mixture
- FelixISF
- · Replies 1 ·
Egg Crate on Pickup Truck: Maximum Speed?
- bumblebeeliz
- · Replies 2 ·
Centripetal Force / Tension / Speed
- bumblebeeliz
- · Replies 5 ·
Calculating Final Speed of a 5kg Vase
- bboycs
- · Replies 4 ·
Why does battery internal resistance change during charging?
- vikcool812
- · Replies 1 ·
Work done by string pulling on a rotating disk through one-quarter turn
- Amar.alchemy
- · Replies 6 ·
Coulombs law and vectors, find the force vector
- starryeyed
- · Replies 4 ·
Hot Cold body in contact, what happens with heat and temperature?
- FelixISF
- · Replies 3 ·
Time to Acceleration: Convert Milliseconds?
- doc.madani
- · Replies 3 ·
How Is the EMF Calculated in Faraday's Law of Electromagnetic Induction?
- EskShift
- · Replies 1 ·
Why Isn't Impedance Defined by √(XL² + XC²)?
- jeff1evesque
- · Replies 6 ·
Absolute Relative Error and Graphs
- Procrastinate
- · Replies 3 ·
Why Does Normal Force Increase with Theta in Banked Road Calculations?
- bthilton
- · Replies 7 ·
Solving Spring Motion with Friction on Incline
- harrinj4
- · Replies 2 ·
How Much Horsepower is Needed for Skiers on a Rope Tow?
- harrinj4
- · Replies 6 ·
Electric Circuits: Voltmeter Reading Same/Different?
- DERRAN
- · Replies 1 ·
Calculating Density from Weight: 341N Object Immersed in Water
- iamtrojan3
- · Replies 7 ·
Child in a family has at least 4sis and 2bros.
- scotyard
- · Replies 7 ·
11 Days of Walking and Playing Badminton at My Friend's House
- scotyard
- · Replies 5 ·
Water flow rate from 12m tank through 200m pipe with friction
- Sevy35
- · Replies 1 ·
How Does Elevator Cable Tension Compare to Weight During Motion?
- bboycs
- · Replies 6 ·
Egg Drop Challenge: Solving the Dilemma with Limited Materials
- Hookeo
- · Replies 1 ·
All electric power- Motor (AC and DC), generators
- EskShift
- · Replies 1 ·
Electric field in a cylindrical configuration
- nugget
- · Replies 5 ·
Understanding EMF Induction: Impact on Objects Without Resistance
- qazxsw11111
- · Replies 2 ·
What is the effect of charge and distance on electric potential energy?
- nugget
- · Replies 6 ·
Calc Min Steel Wire Diameter for 323kg Load
- iamtrojan3
- · Replies 4 ·
Capacitor (Instantaneous current)
- jeff1evesque
- · Replies 9 ·
Two trains travelling toward each other at constant speeds
- matxjos
- · Replies 11 ·
Why does the rate of change of speed equal g cos φ in projectile motion?
- supreabajaj
- · Replies 12 ·
Force needed to unstick a semi sphere on the ground
- fluidistic
- · Replies 5 ·
Vector form of position, velocity, acceleration, and force
- songoku
- · Replies 8 ·
Position Object for Inverted, Magnified Image with Concave Mirror
- jsalapide
- · Replies 5 ·
Derivations of kinematic equations without calculus
- rohannet
- · Replies 2 ·
Bungy Jumping in realtion to Hooke's law
- a14652289
- · Replies 1 ·
Circular Parallel Plate Capacitor
- Leitmotiv
- · Replies 1 ·
Why does refractive index reverse for light returning through a spherical surface?
- stpmmaths
- · Replies 5 ·
Induced EMF in rotating coil at different orientations
- qazxsw11111
- · Replies 9 ·
Does force change when two objects move farther apart?
- dance_sg
- · Replies 6 ·
Finding the force on a particle inside the radius of the Earth
- bitrex
- · Replies 12 ·
How Fast Does a 100 kg Block Ascend a 5 m Slope?
- crazy31
- · Replies 10 ·
What is the velocity of the balloon relative to earth ?
- leena19
- · Replies 13 ·
Distance from woman to images in two parallel plane mirrors 10m apart
- jsalapide
- · Replies 6 ·
Acceleration of a revolving ball
- bumblebeeliz
- · Replies 6 ·
Calculating Rod's Speed After Free Fall
- jdstokes
- · Replies 6 ·
Calculating Number of Air Bubbles Needed for Sphere to Float in Water
- leena19
- · Replies 4 ·
Finding the instantaneous velocity
- frequin
- · Replies 7 ·
Minimum angle of resolution with mouse pupil diameter
- Elemental_
- · Replies 2 ·
Ridiculous Question (Derivatives)
- tshafer
- · Replies 8 ·
Calculating Acceleration with Friction and Inclined Forces
- bumblebeeliz
- · Replies 5 ·
Light Intensity and Aperture Variable for Planck's Constant
- Procrastinate
- · Replies 3 ·
Calculating Magnetic Moment of Hydrogen Atom
- iontail
- · Replies 9 ·
Which markings coincide on two metre rulers at different temperatures?
- leena19
- · Replies 6 ·
One-Dimentional Kinematics Question
- joeisconfused
- · Replies 3 ·
Torque on a coil at an angle to a uniform magnetic field
- qazxsw11111
- · Replies 4 ·
Calculating Work Done on Emptying a Half-Full Cylindrical Reservoir
- demonelite123
- · Replies 2 ·
Electric force between two halves of a sphere
- darkSun
- · Replies 6 ·
Couple of uncertainty questions
- nugget
- · Replies 1 ·
How Is Current Derived in a Series RC Circuit with an AC Source?
- canicon25
- · Replies 7 ·
How is the equation for Power [U'] derived?
- Ognerok
- · Replies 3 ·
Magnetic Flux Density in a Circular Loop
- leena19
- · Replies 2 ·
Investigators measuring a car skid mark to find velocity.
- kavipach
- · Replies 9 ·
How do I find the value of F2 on an inclined plane?
- noobish
- · Replies 3 ·
Hooke's Law - System of Springs
- noobish
- · Replies 4 ·
What is the pressure inside a covered cup and how is it created?
- jebuss
- · Replies 11 ·
Planck's Constant and the Work Function
- Procrastinate
- · Replies 7 ·
How Do You Calculate Projection Speed and Maximum Height in Projectile Motion?
- kfox1984
- · Replies 21 ·
How Long Does It Take for a Damped Oscillator's Energy to Halve?
- iamtrojan3
- · Replies 4 ·
Simplifiyng the proof of conservative field using rottor properties
- slonopotam
- · Replies 1 ·
Finding K for magnetic flux through rectangular circuit between two conductors
- Ylle
- · Replies 10 ·
Solving Circuit Problem with PNP-Common BJT Transistor
- migelo
- · Replies 1 ·
Rottor of a vector in a simple way
- slonopotam
- · Replies 4 ·
Calculating the Tensile Strain of a Glass Rod
- tone999
- · Replies 5 ·
How Can You Determine the Potential Function of a Conservative Force?
- slonopotam
- · Replies 1 ·
Calculating Force on an Oscillating Mass: A Simple Harmonic Motion Problem
- jumpingjack90
- · Replies 4 ·
Optimizing Temperature Alarm Circuit with Thermistor and Resistor
- Stripe
- · Replies 1 ·
Pion decay (tell me if I'm approaching it correctly)
- quasar_4
- · Replies 4 ·
Water balloon dropped from hot air balloon hitting rabbit
- Grove
- · Replies 6 ·
Pressure and Resultant Force in a Closed System
- leena19
- · Replies 2 ·
Does mechanical energy conserve in rocket propulsion without air resistance?
- Amith2006
- · Replies 5 ·
Electrostatic induction (can someone check my answer?)
- leena19
- · Replies 1 ·
How to Solve for Volume and Temperature in a Thermodynamic Problem?
- Nguyenfa.t
- · Replies 17 ·