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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Dot/Cross product vector problem.
- QuarkCharmer
- · Replies 9 ·
Finding Initial Speed w/ Only One Variable Given
- Miki_Spazz
- · Replies 3 ·
Kinetic projectile motion (Helicopter questions)
- bbalin23
- · Replies 7 ·
Calculating Distance and Speed in an Acceleration Chase Problem
- patton_223
- · Replies 4 ·
Vector Addition Problem: How Far and In What Direction Did the Hiker Travel?
- Elysian
- · Replies 1 ·
When do two balls reach the same height?
- magellaniic
- · Replies 2 ·
Why is the first minimum angle half what I calculated for 4-slit interference?
- Thefox14
- · Replies 3 ·
How Do You Calculate the Resultant Displacement in a Football Pass Scenario?
- joedango
- · Replies 3 ·
Calculate Fraction to Change Length of Pendulum for True Run
- cap.r
- · Replies 1 ·
What's the Tension When One String Breaks? 0.25-2mg
- dannee
- · Replies 21 ·
Atwood's Machine with 3 pulleys
- atarr3
- · Replies 3 ·
Negative sign in coulomb's law/centripetal motion question
- gsingh2011
- · Replies 1 ·
Determining Electric Field Inside a Hollow Conducting Sphere with Gauss Law
- blackbyron
- · Replies 17 ·
Solving Tension in Massless, Frictionless Pulley System
- jdroidxw
- · Replies 3 ·
How Do You Solve Vector Equations with Given Values and Unknowns?
- NeomiXD
- · Replies 1 ·
Why does a smaller rolling sphere have greater speed down an incline?
- dannee
- · Replies 1 ·
Calculate Chameleon's Tongue Distance in 1/20 sec
- buckyfulleren
- · Replies 13 ·
Finding the speed of a hawk's shadow on the ground
- olliepower
- · Replies 1 ·
Coulomb's law sign convention for conducting spheres
- RandellK02
- · Replies 3 ·
Motorcycle jump across 69.4 m canyon with 3.0 s flight time
- Simon777
- · Replies 6 ·
Total charge on nonconducting sphere with charge density ρ = Ar
- charlies1902
- · Replies 5 ·
Tension in rope between blocks on an incline
- Alvin92SD
- · Replies 2 ·
Finding distance in a race based on speed
- bling-bling
- · Replies 2 ·
How Fourier Expansion indicates the Amplitude w.r.t a certain frequency?
- genxium
- · Replies 1 ·
What incident energy is required to ionize a helium atom?
- davidpotts
- · Replies 11 ·
How to Calculate Humidity in an Airtight Vessel?
- mahler.ji
- · Replies 1 ·
Force-couple system at origin with clockwise moment sign
- doubled
- · Replies 2 ·
What is the Time and Velocity for Projectile Motion with a Hose?
- andorei
- · Replies 16 ·
How Do You Calculate Magnetic Flux Through a Cube's Face?
- NewtonianAlch
- · Replies 3 ·
Speed and acceleration - running for the bus
- mstud
- · Replies 2 ·
What should be the formula to solve this?
- rexkhyz29
- · Replies 5 ·
Easy Conceptual Kinematics Problem
- waters
- · Replies 6 ·
Current Electricity - current flowing through hand
- sharkey1314
- · Replies 3 ·
At what height do two rubber balls collide?
- Copyright
- · Replies 3 ·
Adding scientific notation question =)
- dolpho
- · Replies 3 ·
What is the reason for the e field being 0 inside of a hollow conductor?
- charlies1902
- · Replies 5 ·
Length contraction and relative velocity in colliding proton beams
- gaobo9109
- · Replies 1 ·
How Does the Center of Mass Move in a Block and Wedge System?
- blackwing1
- · Replies 4 ·
Net displacement of boat traveling west, north, and southeast
- Helmsy
- · Replies 7 ·
Oscillating mass in a liquid, SHO
- Brad23
- · Replies 1 ·
Distance and relative velocity between two ships traveling at different headings
- Star Forger
- · Replies 3 ·
Industrial electronics. Question with coils and diode.
- Femme_physics
- · Replies 48 ·
Can someone explain to me the signs on this vector problem
- pyroknife
- · Replies 4 ·
Electrostatic Force between the sodium ion and the chloride ion.
- Physics Help!
- · Replies 1 ·
Ball thrown upward with air resistance hitting ground
- DivGradCurl
- · Replies 3 ·
Finding the force on a spring (Fs)?
- MuffinMerc
- · Replies 2 ·
What Values of b Minimize or Maximize the X-Component of Force on q?
- Physics Help!
- · Replies 1 ·
Calculating Distance Between Two Vectors in a Camping Scenario
- Crusaderking1
- · Replies 4 ·
Vector magnitude and direction question
- Star Forger
- · Replies 4 ·
Physics-distance using vectors.
- Crusaderking1
- · Replies 16 ·
Human Falling Determine Force on Achilles
- smitty13
- · Replies 1 ·
Finding the initial and final charge of two spheres
- fal01
- · Replies 2 ·
Three Point Charges in a Row, Find Magnitude 1.5cm left of middle charge
- fal01
- · Replies 8 ·
Conservation of energy of a pendulum
- knowNothing23
- · Replies 2 ·
Looking for Kinematic practice problems with solutions
- TerikE
- · Replies 1 ·
Acceleration of a cart being pulled by falling weights
- rollcast
- · Replies 3 ·
Electric Force acting on an electron
- format1998
- · Replies 3 ·
Solving the Physics Behind a Reddit Comic: Can the Raptor Catch Up?
- winowmak3r
- · Replies 3 ·
Proton-proton collisions in an accelerator
- davidpotts
- · Replies 1 ·
Why Is My Calculation of the Wheel's Moment of Inertia Incorrect?
- dannee
- · Replies 3 ·
Solve Your Speeding Dilemma: Calculating Braking Time and Distance
- sabresfan2000
- · Replies 4 ·
How Do You Calculate Acceleration and Time in Kinematics?
- sabresfan2000
- · Replies 1 ·
Can the Human Body Withstand Acceleration to 10% of Light Speed?
- sabresfan2000
- · Replies 1 ·
Rate of heat generation in an electric circuit
- benji
- · Replies 2 ·
Continuous absorption spectrum - why this happens?
- logearav
- · Replies 4 ·
Small Cannon Displacement Problem
- mteykl
- · Replies 2 ·
Emf / coil induction from a spark
- elegysix
- · Replies 4 ·
Coefficient of friction for braking car on slippery road
- rum2563
- · Replies 17 ·
Solving for Height in Horizontal Projectile Motion: 41 m/s, 23 m, g = -9.8m/s
- NemoMnemosyne
- · Replies 2 ·
Understanding Polarities in Inductors and Capacitors in KVL
- the_kool_guy
- · Replies 11 ·
Two blocks with spring (no friction), force applied: displacement?
- ddtozone
- · Replies 2 ·
E Field of Sphere: Find Magnitude at Distance .05m
- pyroknife
- · Replies 1 ·
Charged particle suspended from elastic cord
- jspeese
- · Replies 1 ·
Electric field from point charge inside conducting shell
- ThirdEyeBlind
- · Replies 3 ·
Confusion regarding fundamental classical mechanics question
- rohitgupta
- · Replies 5 ·
Finding Lever Lengths With Overall Mechanical Advantage
- Wolfowitz
- · Replies 4 ·
Is the book wrong again for this e field problem?
- pyroknife
- · Replies 1 ·
How Much Ice to Cool Boiling Tea to 65C?
- cragar
- · Replies 1 ·
What is the speed of the satellite?
- 1MileCrash
- · Replies 2 ·
How Do I Calculate Pressure Loss in Hydraulics with Two Pipes?
- Femme_physics
- · Replies 22 ·
Electric field inside and outside a uniformly charged sphere
- charlies1902
- · Replies 5 ·
Solving Vector A: What am I Doing Wrong?
- QuarkCharmer
- · Replies 4 ·
How Many Sound Intensity Minima Are Detected as Frequency Increases?
- seiei
- · Replies 4 ·
Phyiscs, finding components with per. line
- Crusaderking1
- · Replies 8 ·
How to Calculate the Volume Charge Density of Earth's Atmosphere?
- pyroknife
- · Replies 4 ·
Finding the resultant graphically
- kiraahhh
- · Replies 10 ·
The electric field at the center of a square
- Jay9313
- · Replies 3 ·
Patriot rocket with exponential acceleration hitting incoming missile
- waters
- · Replies 2 ·
Finding pressure with given radius
- Acuben
- · Replies 1 ·
How Does Gauss's Law Apply to the Electric Field in a Uniformly Charged Slab?
- ovoleg
- · Replies 4 ·
How Are Resultant Vectors Calculated in Croquet Ball Displacements?
- scottypippen
- · Replies 1 ·
Will the Magnet Stick to the Car or Fall to the Ground?
- AirForceOne
- · Replies 3 ·
Intensity of a Loudspeaker, What's wrong with calculation?
- Malavin
- · Replies 1 ·
Where does the electric field vanish for two identical charges at x = a and x = -a?
- accountkiller
- · Replies 5 ·
Centripetal and Tangential Acceleration (Change in Speed over time)
- kgarcia
- · Replies 2 ·
Find the magnitude and direction of the net displacement of the player
- matt@USA
- · Replies 3 ·
Kinematics problem that i cant seem to resolve
- adoule
- · Replies 2 ·
Equilibrium of Four Point Charges in a Square: Calculating Charge Q
- badd99
- · Replies 3 ·
Calculating Electric Fields of 3 Charges on a Line
- thekakaru
- · Replies 3 ·
Question involving the mathematics of physics and trigonometry
- kiraahhh
- · Replies 10 ·