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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Calculating Time for a Stone to Hit the Ground from a 100m Cliff
- Resmo112
- · Replies 2 ·
How to find the resonant frequency of this circuit?
- Nat3
- · Replies 6 ·
How Do You Calculate Tensions in a Suspended Engine Setup?
- Ohoneo
- · Replies 1 ·
Does a Charged Rod Repel More Strongly Than a Point Charge?
- jcfor3ver
- · Replies 2 ·
Maximum velocity of mass-spring system with given displacement equation
- Resmo112
- · Replies 2 ·
Calculate Change in Entropy of Factory Furnace per sq m/sec
- neon612
- · Replies 1 ·
Optics Problem: Duplicating Newton's Results with Lens and Prism
- MJPause
- · Replies 3 ·
What Are the Equations for a Ball Drop Experiment?
- physics88
- · Replies 4 ·
How accurately can the position of a 2.7keV electron be measured?
- ronpaulkid
- · Replies 2 ·
How Do I Graph Logarithms with Negative Rate of Cooling?
- Peter G.
- · Replies 4 ·
Two waves from a boat arrive at different times—finding distance
- Resmo112
- · Replies 4 ·
How Far is the 4th Maximum from the Central Maximum?
- 5hassay
- · Replies 2 ·
Gauss's Law and electric field magnitude
- amb0027
- · Replies 3 ·
Mechanical Energy of a Physical Pendulum
- eurekameh
- · Replies 5 ·
Kinetic energy of electron in crossed E and B fields
- AARMA
- · Replies 5 ·
What is the solution to part a of Density physics homework?
- eloiamb
- · Replies 2 ·
Energy released, capacitor power output
- KMc19
- · Replies 2 ·
Magnet - right hand rule - direction of compass North
- dandy9
- · Replies 1 ·
How Long and Fast Does an Arrow Need to Travel to Clear a Tree?
- Kidnapin_colo
- · Replies 4 ·
What orientation will give the minimum mutual inductance?
- NeedsHelp1212
- · Replies 5 ·
How Do You Convert kV to keV?
- tica86
- · Replies 7 ·
Test Tommorrow, Electric Fields
- Earn Success
- · Replies 7 ·
With what maximum accuracy can its position be determined?
- ronpaulkid
- · Replies 1 ·
What is the Minimum Detectable Power of a Light Flash on a Silicon Solar Cell?
- Sarah88
- · Replies 2 ·
Speed and tension of a conical pendulum at 22 degrees
- tatsalez
- · Replies 6 ·
Find the electric field intensity at point D
- aeromat
- · Replies 1 ·
Why do we weigh less at the equator?
- bigsaucy
- · Replies 8 ·
Projectile motion without Vi or time known
- jennknoe
- · Replies 2 ·
Circular Motion - Pendulum swinging
- bahrmd
- · Replies 1 ·
Circular motion (conical pendulum)
- kingkong69
- · Replies 9 ·
Why is efficiency so low in cars?
- iRamie
- · Replies 1 ·
Minimum Work Needed to Bring 2 charges from distance infinity
- KMc19
- · Replies 2 ·
How Can I Determine the Exit Velocity of Water from a Pipe?
- alibond07
- · Replies 1 ·
So, why do magnets feel easier to attract than to pull away?
- flyingpig
- · Replies 3 ·
Error Analysis of Sin(x) with x=2±0.2
- zak8000
- · Replies 1 ·
Finding Electric Potential at Point Marked by Dot
- Netsurfer733
- · Replies 1 ·
Is it dangerous to fire a gun upwards?
- flyingpig
- · Replies 5 ·
What is the potential difference across the capacitor?
- Netsurfer733
- · Replies 2 ·
How Is Velocity Calculated for a Two-Stage Rocket?
- engineertech0
- · Replies 1 ·
What are the energy changes in a spring oscillation?
- malsch
- · Replies 1 ·
Two point charges with electric potential energy?
- Netsurfer733
- · Replies 2 ·
Projectile launched 28 m horizontally in 1.4 seconds
- navjot singh
- · Replies 1 ·
Angular velocity of rotating triangular sheet after 270° rotation
- engineertech0
- · Replies 1 ·
Finding radial and angular force components from a given trajectory
- engineertech0
- · Replies 1 ·
Collision problems with friction on a ramp and momentum conservation
- duxerwhere
- · Replies 7 ·
Finding equivalent capacitance and charge in a capacitor circuit
- elleeyeesay03
- · Replies 3 ·
What Is the Probability of Finding Small Tomatoes in a Random Sample?
- ber1023
- · Replies 1 ·
Electromagnetic Radiation and Mediums
- kripkrip420
- · Replies 1 ·
Dart landing distance below bullseye in projectile motion
- navjot singh
- · Replies 1 ·
Compton Scattering: Difficulties with Part C
- Chowie
- · Replies 4 ·
Magnetic fields and current flows
- liz_p88
- · Replies 3 ·
Spring-Type problem (Work done by gravity)
- charmy
- · Replies 12 ·
Which properties of sinusoidal radiation are true
- xzibition8612
- · Replies 6 ·
What is the Electric Field at the Origin in a Semicircle?
- amb0027
- · Replies 2 ·
Which Fundamental Force is Involved?
- funkmetalbass
- · Replies 1 ·
I think my physics teacher doesnt have a clue
- Rtorres81
- · Replies 1 ·
What is the optimal velocity for a bouncing ball to pass through a window?
- Oonej
- · Replies 46 ·
Free surface of a liquid at rest
- zorro
- · Replies 5 ·
The potential difference necessary to accelerate an He+ ion ?
- Netsurfer733
- · Replies 2 ·
Friction on an inclined plane/pulley
- ToManyNumbers
- · Replies 5 ·
Calculating shear stress on a pin and bearing stress on a hole
- PaulTO
- · Replies 1 ·
How is acceleration = work done?
- ProPM
- · Replies 11 ·
Why is efficiency always less than 100%?
- iRamie
- · Replies 8 ·
Coulomb's Law, Rearranging Equation.
- Syncert
- · Replies 2 ·
A bullet is shot into a block of wood
- pdonovan
- · Replies 6 ·
Calculate Force to Move Crate at Steady Speed
- goluigi2196
- · Replies 7 ·
Damped harmonic oscillator with a CONSTANT frictional force
- khfrekek92
- · Replies 1 ·
What Modifications Can Boost Ramp Efficiency Without Height Adjustment?
- iRamie
- · Replies 3 ·
The Mysteries of (a) and (c): Homework Solutions
- goluigi2196
- · Replies 4 ·
Radiation pressure and electromagnetic waves
- jdismu1
- · Replies 1 ·
How Does a Sharp Shadow Prove Light Travels in Straight Lines?
- logearav
- · Replies 8 ·
No Work Done during Circular Motion
- Peter G.
- · Replies 1 ·
Conservation of momentum and kinematics - exploding artillery shell
- khfrekek92
- · Replies 1 ·
Really Quick Maxwell Eqns Question
- bon
- · Replies 3 ·
Average Power Calculation for a Box Pushed Up an Incline in 4.2 Seconds
- Resmo112
- · Replies 8 ·
Equation of motion for a simple pendulum
- lina29
- · Replies 3 ·
Difference Between x^2 + ax + b and ax^2 + bx + c?
- Amaz1ng
- · Replies 2 ·
Projectile Motion, how tall is the building
- xRantastic
- · Replies 4 ·
Boundary conditions for particle in square well with infinite wall
- loobloke
- · Replies 1 ·
Physics-Stable Equilibrium and Oscillations
- smiles75
- · Replies 5 ·
How Is Stable Equilibrium Achieved in a One-Dimensional Force System?
- smiles75
- · Replies 4 ·
How are energy and work related?
- teggenspiller
- · Replies 3 ·
Electron velocity from de Broglie wavelength and photon energy from wavelength
- Howlin
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Why Was Mass Given for Work Calculation?
- teggenspiller
- · Replies 2 ·
Effort Required to lift a load using third order lever
- aaronh25
- · Replies 1 ·
Statics - Truck's max load in center of mass
- Femme_physics
- · Replies 4 ·
What Is the Amplitude of the Block's Motion After a Bullet Is Fired Into It?
- longhorn991
- · Replies 1 ·
Why Do Observers in Different Frames Perceive Time Differently?
- Sirsh
- · Replies 2 ·
Isothermal expansion driving a refrigerator between 200K and 300K reservoirs
- Telemachus
- · Replies 2 ·
Radioactive decay with two simultaneous particle emissions
- zorro
- · Replies 5 ·
Object Rolling Down Inclined Plane
- sidvelu
- · Replies 1 ·
RLC circuit with variable capacitance problem
- megansanford
- · Replies 11 ·
Projectile motion and gravitational acceleration
- Idoubt
- · Replies 15 ·
Finite potential well easy question
- frozenguy
- · Replies 2 ·
Calculating Potential Difference in Self-Induction
- Haru Yo Koi
- · Replies 1 ·
Change in electric potential between 2 parallel plates
- Runaway
- · Replies 1 ·
Elastic potential energy and spring constant problems
- Justinfrank
- · Replies 3 ·
Which Formula Should I Use to Calculate the Kinetic Energy of Gases?
- omni
- · Replies 3 ·
Doppler Effect involving two moving objects
- sloane729
- · Replies 1 ·
Is the Collision Between Two Moving Carts Elastic?
- SteelDirigibl
- · Replies 5 ·