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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Can You Attach a Metal Rod to a Stretchable Spring for a Horizontal Launcher?
- whoareyou
- · Replies 3 ·
What is the tension in an aluminum wire with a given radius and wave speed?
- freeofwork
- · Replies 1 ·
Calculating Impulse and Speed with a Variable Force
- logan9691
- · Replies 2 ·
Simple Harmonic Motion amplitude
- JKLS
- · Replies 7 ·
SI Units question in physics conceptual question
- xCrusade
- · Replies 9 ·
Electrostatic Net Force Problem
- jlholmes80
- · Replies 3 ·
Electric Circuit: What Slope Tells You
- AddversitY
- · Replies 3 ·
To determine the mass of a liquid using an electronic balance?
- MsTech
- · Replies 2 ·
Probabilty of finding the electron of the hydrogen atom in
- Yhaz
- · Replies 5 ·
Motion Question: Calculating Change in Momentum and Resultant Force
- MsTech
- · Replies 4 ·
Calculating Cross Section from Neutron Absorption in a Gold Foil
- Dovahkiin
- · Replies 1 ·
Calculating Wave Speed for a 6m Rope with 7kg Mass and 140 N Force
- freeofwork
- · Replies 5 ·
Any suggestion for a car safety physics project?
- vycanismjrs
- · Replies 11 ·
Motion sensorPositive or negative?
- yypsxxxxxx
- · Replies 1 ·
Electric Potential Energy and Electric Potential?
- S.R
- · Replies 4 ·
Why Does Impedance Use Positive and Negative J Notation?
- lubo
- · Replies 12 ·
What is the Angular Momentum of Harry Potter on a Spinning Merry-Go-Round?
- bazookajason
- · Replies 2 ·
How to use inductors and capacitors to increase power through resistor?
- sigg
- · Replies 1 ·
Center of Mass: Boat and regular pentagon
- Fattyman
- · Replies 1 ·
Is the Motion of a Rubber Ball in a Concave Surface Simple Harmonic Motion?
- vkash
- · Replies 3 ·
Thermodynamics, ideal gas, probability distributions
- SoggyBottoms
- · Replies 1 ·
Is voltage and amp constant in a current?
- vd853
- · Replies 2 ·
What are equipartitioned waves?
- funcosed
- · Replies 1 ·
Meaning of simple harmonic motion equations
- nukeman
- · Replies 5 ·
Electric Forces and fields question
- fatty005005
- · Replies 11 ·
Calculating the 8.50 * (4.33 - 3)
- maceng7
- · Replies 1 ·
Free-body diagrams for accelerating truck and box
- Kinermatics
- · Replies 8 ·
Calculating charge when given electric field
- jakethelocker
- · Replies 2 ·
How Do Gauss' Law of Flux and Newton's Shell Method Relate for Hollow Spheres?
- physmeb
- · Replies 3 ·
Quarter Wavelength Transmission Line
- nathangrand
- · Replies 2 ·
How Do You Calculate Acceleration in a Physics Experiment Involving Force?
- Tideo
- · Replies 6 ·
Why does light always travel at c in an inertial frame?
- HarleyM
- · Replies 6 ·
Finding the time derivative of a trigonometric function
- An1MuS
- · Replies 5 ·
Force induced by mass (very simple
- Ortix
- · Replies 1 ·
How Does Sunlight Affect Black Body Radiation?
- vkash
- · Replies 3 ·
Magnetic field outside a solenoid crossed by a current.
- maCrobo
- · Replies 1 ·
How Do You Calculate Initial Speed of a Football Kicked at an Angle?
- mack2629
- · Replies 10 ·
RC Circuits, time to charge a capacitor
- iiiiaann
- · Replies 13 ·
How Does Surface Tension Affect the Force Needed to Separate Glass Plates?
- ahmeeeeeeeeee
- · Replies 5 ·
Tedious Algebra- Is it needed? - Coulomb Force
- Gamma
- · Replies 4 ·
Michelson Interferometer - Fringe Shape
- cupid.callin
- · Replies 3 ·
What is a Complex Lens? Convex or Concave?
- fatty005005
- · Replies 1 ·
Focal length calculations for a double convex lens?
- arcanebop
- · Replies 3 ·
Does the direction of the incoming ball affect the resulting exit velocity?
- Peter G.
- · Replies 2 ·
Physics P-n Junction Diode Problem
- Avi1995
- · Replies 3 ·
Determine the magnitude and direction of smallest force
- blackandyello
- · Replies 3 ·
What number on a digital clock draws the least current from a battery?
- Mukilab
- · Replies 2 ·
The compressive longitudinal strain
- ahmeeeeeeeeee
- · Replies 1 ·
How to Resolve a Vector into Parallel Components?
- blackandyello
- · Replies 3 ·
Does partial reflection-partial refraction occur for all waves?
- whoareyou
- · Replies 3 ·
Force between capacitor plates, partially filled with dielectric
- erst
- · Replies 1 ·
Confused by first question in air resistance problem
- errubio
- · Replies 5 ·
Finding the KE and the energy will be lost due to friction?
- ktlee
- · Replies 3 ·
What is the Entropy Change of the Universe?
- sodaboy7
- · Replies 4 ·
A 59 kg pole vaulter falls from rest from a height of 4.7 m onto a
- hailstorm17
- · Replies 3 ·
Block Sliding, might use work energy theorum
- datrumpet45
- · Replies 2 ·
Confirm V=fx Meaning with Springs and Waves - 65 Characters
- AATroop
- · Replies 2 ·
How Does a Bead on a Hoop Reach the Top and When Does the String Go Slack?
- jiboom
- · Replies 21 ·
Relativistic Mass as described by Kenneth Krane in 'Modern Physics'
- arguellodw
- · Replies 1 ·
What is the role of gravity in a hanging spring's potential energy?
- aaaa202
- · Replies 6 ·
Conservation of Energy, Ball going down slope
- datrumpet45
- · Replies 1 ·
Proving Stirling's formula with substitution t=ny
- Physicist
- · Replies 6 ·
Electric current? how many electrons?
- snash1057
- · Replies 5 ·
Ideal gas law - work out temperature and pressure
- victoriafello
- · Replies 20 ·
What is the age of Earth: solar day, lunar day, or astronomical day?
- asmalik12
- · Replies 6 ·
Finding pressure and temperature of helium gas from volume and atom count
- shyguy79
- · Replies 12 ·
How can we solve the ballistic pendulum problem using conservation of energy?
- fairuzjannah
- · Replies 1 ·
What is the Group Velocity of Infrared Radiation in a Dispersive Medium?
- nathangrand
- · Replies 4 ·
Angular speed and acceleration of a rod
- songoku
- · Replies 6 ·
Looking for A-Level Physics Exams
- fobbz
- · Replies 2 ·
Gravitation and velocity problem
- canicon25
- · Replies 11 ·
How Do You Calculate the Total Acceleration and Force on Two Touching Blocks?
- Heather_
- · Replies 3 ·
Hopefully last question on circular motion (on a cone)
- jiboom
- · Replies 12 ·
Temperate a scalar than why negative temperature?
- GreenPrint
- · Replies 1 ·
How does the amount of charge on a doorknob affect the length of a spark?
- Specialmias
- · Replies 4 ·
Thermodynamics, Helmholtz free energy, Legendre transformation
- SoggyBottoms
- · Replies 1 ·
How Does Launch Angle Affect Projectile Range?
- Temper888
- · Replies 1 ·
How Does Friction and Air Resistance Affect a Skier's Speed on a Slope?
- ae4jm
- · Replies 4 ·
Force in members of truss; section method
- togo
- · Replies 11 ·
What Is the Equilibrium Temperature in an Adiabatically Isolated System?
- sodaboy7
- · Replies 3 ·
Centrifical Motion Theoretical Question
- Retricide
- · Replies 1 ·
More circular motion questions:
- jiboom
- · Replies 3 ·
Deriving E=mc² from relativistic mass and kinetic energy
- cupid.callin
- · Replies 7 ·
Lorentz Length Contraction Derivation
- ZedCar
- · Replies 6 ·
What are the weights A and B in this system?
- alephnull
- · Replies 15 ·
Where Should the Coin Be Placed for the Ball to Hit It?
- Let It Be
- · Replies 13 ·
A rocket accelerates upwards Mechanics
- lubo
- · Replies 16 ·
A pendulum on some moon has a length of 1.5meters and a period of
- TutorGirl22
- · Replies 5 ·
Moment of inertia of solid slab
- songoku
- · Replies 4 ·
Explain solution to me(Gravitation)
- Gavroy
- · Replies 2 ·
How Does Dipole Arrangement Affect Electric Field Strength at a Distance?
- scholio
- · Replies 3 ·
Diffraction grating: spacing, diffraction angle, and frequency
- jendrix
- · Replies 6 ·
How long should I struggle with a physics problem before looking at the answer?
- Kinermatics
- · Replies 1 ·
Model Railgun Project - Don't have a grasp of the physics
- CuriousCynic
- · Replies 3 ·
A simple change in gravitational energy, but I want to be certain.
- US-RB
- · Replies 4 ·
How Do You Calculate the Initial Speeds of Two Electrons in a Collision?
- Millacol88
- · Replies 3 ·
Velocity of a Dropped Camera on Mars
- Casey314stl
- · Replies 1 ·
How Fast Were the Catapulted Boulders Initially?
- Casey314stl
- · Replies 1 ·
What is the problem with this physics question?
- Casey314stl
- · Replies 1 ·
Wavelenght associated with electron
- mounica reddy
- · Replies 5 ·