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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Initial velocity for a leaping cat
- NooDota
- · Replies 11 ·
Velocity Vector at the end of the acceleration formula?
- NiendorfPhysics
- · Replies 7 ·
Spring Amplitude Calculation: Solving for the Amplitude Given Initial Conditions
- goonking
- · Replies 9 ·
Basic Kinematics Problem -- Backpacker's average velocity and distance....
- physlexic
- · Replies 3 ·
Questions on photoelectric effect
- EdJr
- · Replies 4 ·
How Does Increasing Voltage Reduce Power Loss in Electrical Transmission?
- skepticwulf
- · Replies 6 ·
What Is the Upper Limit for Hertzian Dipole Dimensions?
- smileandbehappy
- · Replies 5 ·
Calculating Gas Pressure: Solving for Pressure in a Variable Volume
- Bechensten
- · Replies 2 ·
How to find the equation for velocity of a mass on a spring?
- Danya314
- · Replies 7 ·
Calculating variance of momentum infinite square well
- Robsta
- · Replies 2 ·
Can someone check my answer for this work-energy problem?
- toesockshoe
- · Replies 5 ·
Energy changes moving through fluids
- Jimmy87
- · Replies 3 ·
Show E must exceed minimum value of V(x) to be normalizable
- Robsta
- · Replies 15 ·
Calculating initial velocity using kinematic equations
- cmonstre
- · Replies 1 ·
Photon Flux vs. Intensity: Which equation should be used to solve this problem?
- lulzury
- · Replies 2 ·
Typical question: Entropy of the universe, of surroundings
- davidbenari
- · Replies 3 ·
What is the final velocity of a car with constant acceleration?
- subopolois
- · Replies 3 ·
Finding Coefficient of Kinetic Friction in a Pulley/Tension Problem
- cdenne
- · Replies 8 ·
Am I underthinking this work problem?
- toesockshoe
- · Replies 19 ·
What Are the Velocities of Two Blocks After an Elastic Collision?
- Carlitos
- · Replies 3 ·
Finding constant acceleration, unit difficulty
- PhysicallyAbel
- · Replies 2 ·
What does it mean when total mechanical energy is negative?
- goonking
- · Replies 15 ·
Small Angle Approximation in Single Slit Interference
- lulzury
- · Replies 3 ·
Solving for Equilibrium: Water vs Mercury
- goonking
- · Replies 12 ·
What Angles Reveal Second Order Bright Fringes in Diffraction?
- Shahab Mirza
- · Replies 2 ·
Kirchhoff's Rules: Solve 9V Battery Circuit
- kaspis245
- · Replies 16 ·
How Much Force is Needed to Lift a Wheel Over an Obstacle?
- Curieuse
- · Replies 2 ·
Inductive Heater Homework: Find Current & Rate of Energy
- Angie K.
- · Replies 5 ·
Wire Attracts Loop - Electromagnetic Unit
- Angie K.
- · Replies 4 ·
Circuit Analysis with Two Batteries and an Ammeter
- henry3369
- · Replies 3 ·
Building a solar cooker for school
- Berkan
- · Replies 4 ·
Find the voltage needed to accelerate the electron from rest
- 0coffeebean0
- · Replies 7 ·
Bow and arrows, Newtons second law of physics
- copypacer
- · Replies 1 ·
Magnetic Levitation: Solving for Current I
- Angie K.
- · Replies 24 ·
Statics problem: cats on a beam, tension of cables calculation
- Persimmon
- · Replies 8 ·
Torque Required to bring a drum to rest
- teage
- · Replies 7 ·
Friction Forces Between Stacked Blocks: Determining Direction
- minimario
- · Replies 7 ·
Incomplete Cancellation of Magnetic Field
- Angie K.
- · Replies 8 ·
Calculate the wavelength of electrons traveling at 1.15x10^5
- Anna Davis
- · Replies 3 ·
What is the Magnetic Field at Point P due to Two Parallel Wires?
- Angie K.
- · Replies 7 ·
How Do You Calculate the Potential Difference Across a Capacitor in a Circuit?
- Prannoy Mehta
- · Replies 19 ·
Is Velocity Zero if Displacement is Zero?
- at94official
- · Replies 1 ·
Why is the Instantaneous Speed Zero in this Rotational Motion Problem?
- minimario
- · Replies 3 ·
Direction of Masses in Collision
- minimario
- · Replies 2 ·
Solving for Net Torque: W = Torque * Distance
- minimario
- · Replies 4 ·
Mixing water with steam, find equilibrim
- sallychan
- · Replies 14 ·
What are some real life examples of resonance?
- getsubaka
- · Replies 4 ·
Calculating Current in a Moving Rod U-Shaped Conductor Circuit
- Angie K.
- · Replies 8 ·
How Does Friction Affect Motion on an Inclined Plane?
- Carlitos
- · Replies 9 ·
Correct! Thank you for catching that mistake.
- dyel
- · Replies 13 ·
Calculating Time Dilation for Earth Signals at 0.600c
- overtak3n
- · Replies 14 ·
How Long Does a Wave Take to Travel Up and Down a Hanging Rope?
- Temp0
- · Replies 11 ·
Contracting Loop in a Magnetic Field
- Angie K.
- · Replies 7 ·
Question using Hubble's Constant
- Jimmy87
- · Replies 1 ·
How is the torque shared between two points?
- Curious3
- · Replies 5 ·
Kirchoffs Current Law to find voltage?
- TheNarrator
- · Replies 16 ·
Electrostatics problem using Coulomb's law
- spaghetti3451
- · Replies 13 ·
Standing Wave on String Question
- FaraDazed
- · Replies 5 ·
Velocity of a Sphere Rolling in a Circular Bowl
- CoffeeCrow
- · Replies 3 ·
Determining current from ammeter
- neongoats
- · Replies 6 ·
Work in isothermal PV process. Which method is correct?
- barryj
- · Replies 11 ·
Speed/Distance/Time + Fuel Consumption
- RCAF91
- · Replies 4 ·
How to prove that velocity of wave= sqrt(tension/denisty)?
- MARK STRETERS
- · Replies 8 ·
Center Frequency and Bandwith of Bandpass Filter?
- Gwozdzilla
- · Replies 18 ·
Finding thing due to gravitation
- Raghav Gupta
- · Replies 13 ·
How Do You Normalize a Wavefunction and Calculate Particle Location Probability?
- squelch
- · Replies 1 ·
Ideal gas law in terms of density
- goonking
- · Replies 14 ·
Heat problem (cooler at a beach)
- goonking
- · Replies 26 ·
Understanding the Equation: L = c ΔT
- goonking
- · Replies 22 ·
How Do You Find Volume Using PV=nRT?
- goonking
- · Replies 9 ·
Questions on finding average EMF
- Lilly1
- · Replies 5 ·
Kinetic energy to thermal energy
- goonking
- · Replies 5 ·
What is the capacitance of the system between P and Q?
- Raghav Gupta
- · Replies 5 ·
Why does the coefficient for steel in expansion change with temperature?
- goonking
- · Replies 2 ·
Newton's First law - Dropping a feather and a hammer....
- copypacer
- · Replies 10 ·
Coherence length of monochromatic laser
- elif
- · Replies 5 ·
Car acceleration force required to size a DC motor torque
- Mike Gaffer
- · Replies 8 ·
Finding energy from dipole moment - Helmholtz pair?
- smileandbehappy
- · Replies 5 ·
What is the Maximum Magnetic Field Under Overhead Power Lines?
- Angie K.
- · Replies 2 ·
Calculating the Force on a Bicycle Wheel
- BrettF
- · Replies 2 ·
Will a Car Skid? | Friction and Centripetal Acceleration
- Joe Cruz
- · Replies 5 ·
Adiabatic Free Expansion and Reversible Isothermal Path
- says
- · Replies 6 ·
Conservation of Momentum (elastic collision of masses)
- SteveS
- · Replies 15 ·
Speed of bullet and kinetic energy lost in the impact
- moenste
- · Replies 22 ·
Bernouli's equation to calculate flow velocites and pressure
- yugeci
- · Replies 7 ·
Magnetic Field of Four Parallel Wires
- Angie K.
- · Replies 5 ·
Ampere's Law - finding Magnetic Field
- smileandbehappy
- · Replies 13 ·
Calculating Fall Time on Earth: Integration of Acceleration
- Owl2256
- · Replies 12 ·
Checking a relation in S and acceleration
- Raghav Gupta
- · Replies 27 ·
Deriving the Frequency of Beats
- elemis
- · Replies 5 ·
Wave Energy Density: Discrepancy in Units
- Dazed&Confused
- · Replies 6 ·
Equation for neutron proton-fusion, and deuterium photodiss.
- Flucky
- · Replies 2 ·
How Do You Calculate Current in Lamps with Different Wattages?
- Elliott.98
- · Replies 2 ·
Working with magnetism, solenoid
- Sox281212
- · Replies 7 ·
Maxwell's Wheel: Understanding Conservation of Energy and Derivatives
- diracdelta
- · Replies 6 ·
Calculating Magnetic Flux and EMF in a Circuit with Changing Current
- ecobubble
- · Replies 1 ·
Help to understand electrostatics fully
- stfz
- · Replies 4 ·
Differential of X [ dX = U/V dV + U/p dp ] Internal Energy?
- says
- · Replies 7 ·
What Is the Range of Magnetic Field Values Inside a Toroid?
- Angie K.
- · Replies 3 ·
How Does the Galileoscope's Optical Design Affect Its Viewing Capabilities?
- Kate16
- · Replies 1 ·