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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Atomic collisions must be elastic?
- gmark
- · Replies 5 ·
How to find acceleration from only initial and final velocity
- tooperoo
- · Replies 15 ·
How Much Energy is Needed to Move a Satellite to Infinity from Earth Orbit?
- brometheus
- · Replies 3 ·
Sending an object to space from earth at different places
- shotme100
- · Replies 7 ·
Finding frequency from wavelength for an LED lab
- venndicator
- · Replies 8 ·
How Much Force Did the Rocket Exert on the Sled?
- freshcoast
- · Replies 6 ·
What Forces Act on a Box Moving Up a Frictional Ramp?
- freshcoast
- · Replies 8 ·
Viscosity of a Fluid measured by a viscometer
- DylanW
- · Replies 6 ·
Resistance in a combination circuit
- wahaj
- · Replies 7 ·
Finding the Commutator of Two Operators
- Denver Dang
- · Replies 4 ·
Gravitational potential energy of a sphere of non-uniform density
- mell0r
- · Replies 11 ·
Finding the Range of a Bullet Fired from a Sliding Incline
- Toranc3
- · Replies 4 ·
Horizontal component of force without angle given?
- Hanyuu
- · Replies 5 ·
Pendulum motion and pythagorean theorem
- sunnyday01
- · Replies 4 ·
WHY does curvature of a convex lens affect focal length?
- Anf31ld
- · Replies 1 ·
What is the angle of the hill when the box slides with constant speed?
- freshcoast
- · Replies 3 ·
Momentum, Impulse, and Collisions: Wooden Block Shot with a bullet
- ahorowitz1
- · Replies 2 ·
Point Charge in an uncharged spherical conductor
- SauerKrauter
- · Replies 4 ·
Integrating to find potential energy from force
- Sneakatone
- · Replies 12 ·
WHY does the sign for B1 and B2 keep CHANGING in this Bnet equation?
- riseofphoenix
- · Replies 19 ·
Finding engine power when car accelerates on freeway
- KTiaam
- · Replies 3 ·
Riding a Loop the Loop (velocity at the bottom of the loop)
- clope023
- · Replies 13 ·
Pushing a chair at constant velocity vs increasing the force
- krackers
- · Replies 1 ·
Why was there a delay between the meteor explosion and the sonic boom in Russia?
- Dewbo
- · Replies 2 ·
Finding velocity of car in Carnival ride
- chicagobears34
- · Replies 10 ·
How can i get the velocity of waves ?
- Mohamed9005
- · Replies 1 ·
Center of mass of a hemisphere with uniform surface density
- JJfortherear
- · Replies 1 ·
Conservation of Energy, pendulum problem
- Litcyb
- · Replies 5 ·
How Can Fermat's Principle and Snell's Law Help You Find a Car Key in Water?
- chrisakatibs
- · Replies 2 ·
How Does Water Leakage Affect the Frequency of a Vibrating Guitar String?
- chrisakatibs
- · Replies 1 ·
How High Does a Golf Ball Go When Driven at 24.5 Degrees?
- richardjoe05
- · Replies 1 ·
What Is the Linear Acceleration of the Hoop in a Pulley System?
- cp255
- · Replies 3 ·
Velocity(t), of rod moving in B-field
- serverxeon
- · Replies 1 ·
Resistance and How It Varies With Diameter
- Bashyboy
- · Replies 1 ·
Finding electron deflection direction with right hand rule at Earth's equator
- riseofphoenix
- · Replies 4 ·
Electric field on each midpoint of square of side L
- Dexter09
- · Replies 38 ·
Calculating Self Capacitance of an Isolated Sphere
- Saitama
- · Replies 35 ·
Finding Minimum Friction for Static Wedge: A Free Body Analysis Approach
- safat
- · Replies 5 ·
Gas pressure in two connected chambers with height difference
- DylanW
- · Replies 11 ·
Understanding Potential Difference in Terms of Electric Field and Distance
- Miike012
- · Replies 2 ·
How far away is she from the centre of the earth?
- calidreaminn
- · Replies 3 ·
Why might the two methods of calculating net torque not agree?
- Losttime
- · Replies 1 ·
Multiple dielectrics inserted in capacitor
- member 392791
- · Replies 1 ·
What is the maximum energy an electron can have after scattering a 40keV photon?
- bmb2009
- · Replies 6 ·
How fast will your twin crash into the overturned truck?
- freshcoast
- · Replies 4 ·
Why Does a Toy Airplane on a String Tilt When It Flies in Circles?
- kirafreedom
- · Replies 2 ·
Spring/block on horizontal plane SHM
- physninj
- · Replies 3 ·
Calculating Wheel Forces on a Car's Center of Gravity
- robertmatthew
- · Replies 14 ·
Initial speed with Angle and distance
- Computerguy
- · Replies 11 ·
Discontinuity in electrical field.
- peripatein
- · Replies 14 ·
Current and Voltage of Elements of a Circuit with a Solenoid.
- Thadis
- · Replies 4 ·
Kinetic energy formula for electron in lowest energy state
- Kognito
- · Replies 3 ·
Direct-current circuit/Kirchhoff's law problem
- Lolligirl
- · Replies 1 ·
Thermodynamic Efficiency and the maximum possible electric output
- annie05
- · Replies 1 ·
Kinetic Energy in water and the rate carried across each square meter
- annie05
- · Replies 1 ·
Graph Vout vs Vin of diode circuit
- leroyjenkens
- · Replies 7 ·
Acceleration on a parabolic curve
- issacnewton
- · Replies 5 ·
Statics, determine the force required to rotate a body
- jonjacson
- · Replies 2 ·
Making intensity data linear to find sound source power
- minhdo
- · Replies 1 ·
Show that the wavefunction is normalized
- Von Neumann
- · Replies 1 ·
Block on block with friction and relative motion
- sankalpmittal
- · Replies 11 ·
Why does the electric field vary across parallel capacitor plates?
- Ishida52134
- · Replies 2 ·
Finding the Location of the 2nd Antinode in a Standing Wave at 4.10 Meters
- jamcintyre1
- · Replies 3 ·
Finding the semi-major axis of a transfer orbit?
- kasra12321
- · Replies 15 ·
Why sinh, cosh, and tanh relate to hyperbolas
- lch7
- · Replies 1 ·
Finding the Function of a Given Graph
- lch7
- · Replies 2 ·
Calculating Angle and Height in Conservation of Energy Problem with Friction
- TheMasterFool
- · Replies 2 ·
Magnitude of Potential Difference Between Two Points
- anomalocaris
- · Replies 5 ·
Induced currents in wire loops near a current-carrying wire
- riseofphoenix
- · Replies 3 ·
Kinetic and potential energies of a harmonic oscillator
- Von Neumann
- · Replies 5 ·
Telling whether a wave function might have physical graph
- Von Neumann
- · Replies 8 ·
Trouble with a basic one-dimensional motion problem
- brizznook
- · Replies 1 ·
Finding Mechanical Energy without knowing Efficiency
- jennyskywalker
- · Replies 4 ·
How Can a Simple Electric Motor Be Created Using a Coil in a Magnetic Field?
- CAF123
- · Replies 21 ·
Which design is better for a popsicle stick bridge: left or right?
- agm1984
- · Replies 2 ·
Conservation of Momentum/Collisions
- happycreature
- · Replies 5 ·
How to Calculate Final Charge on Capacitors Connected in Series?
- member 392791
- · Replies 7 ·
Why do charges exist and why only two types?
- davon806
- · Replies 4 ·
Wave speed in steel wires with different diameters
- NicoleRosalyn
- · Replies 10 ·
Force pushing two gliders on an air track.
- kevinius
- · Replies 8 ·
Using recoil of atom to find correct in wavelength of emitted photon
- Fluxthroughme
- · Replies 6 ·
Ball rolling off ramp - what happens?
- randomkent
- · Replies 2 ·
Solving for Magnetic Flux in a Rotating Wire Loop
- lovelyrwwr
- · Replies 4 ·
Finding RMS Speed of Gas Atoms: Ideal Gas
- AllenHe
- · Replies 5 ·
Number of collisions; elastic collisions
- Gloyn
- · Replies 5 ·
What Causes Oscillatory Motion in a Particle with a Constant Force?
- Rulonegger
- · Replies 3 ·
Rock dropped from cliff with sound delay of 3 seconds
- miniradman
- · Replies 6 ·
Inelastic collision (finding e, don't understand concept)
- coconut62
- · Replies 4 ·
How is the planet-star ratio determined using the transit method?
- Tryingmybest
- · Replies 7 ·
Finding distance between two origin points; waves
- Butterlegs
- · Replies 2 ·
Shuttle moving in a circular orbit
- clownbaby
- · Replies 4 ·
Linear Algebra Applications in Astrophysics
- Chelsea S
- · Replies 4 ·
Finding the Velocity of Light through an Unknown substance
- OnceKnown
- · Replies 2 ·
Trying to find orbital velocity based off of height
- kasra12321
- · Replies 7 ·
Two Dimensional Kinematics probelms
- riken9
- · Replies 3 ·
Significant digits including only one zero
- alingy1
- · Replies 4 ·
Statics: Find resultant force and couple moment
- Chandasouk
- · Replies 2 ·
Calculating electron charge in lab
- bfusco
- · Replies 2 ·
Horizontally missed target, By how much?
- lisa1220
- · Replies 3 ·
Finding apparent depth with refraction at water surface
- rocapp
- · Replies 3 ·