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 the Molar Mass of Carbon 14
- stunner5000pt
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How is the kinetic energy of a falling rod on a frictionless surface calculated?
- dowjonez
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What is the Work Required to Charge a Spherical Shell?
- grief
- · Replies 3 ·
Solve Dynamics Problem: Find Accel. & Net Force
- xc630
- · Replies 2 ·
Calculate Specific Gravity: Weight, Buoyant Force & Density
- nixxie
- · Replies 2 ·
Current balance experiment giving negative force values
- Pioneer
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Utterly lost - internal torques
- kajalove
- · Replies 13 ·
How Does Friction Affect Speed on a Sloped Ramp?
- pureouchies4717
- · Replies 3 ·
Can Two Interfering Waves' Intensities Simply Be Added for Maximum Intensity?
- PhY_InTelLecT
- · Replies 1 ·
Pictures of actual parallel and series circuit setups
- Benny
- · Replies 6 ·
Kinematics Car Distance Problem
- blumfeld0
- · Replies 8 ·
Door acceleration and friction with constant velocity
- chrono4321
- · Replies 9 ·
Calculating Electron Energy, Momentum, Wavelength
- Psi-String
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How Much Water Can Lightning Boil Away from a Tree?
- mpm
- · Replies 2 ·
Crystalline diffraction problem
- furtivefelon
- · Replies 1 ·
How Does Weight Loss Affect the Orbital Period of a Satellite?
- aalmighty
- · Replies 3 ·
Find forces in members B and C of a static structure
- TSN79
- · Replies 1 ·
Minimum static friction coefficient for a refrigerator resisting a 500N push
- angina1
- · Replies 1 ·
Average and instantaneous velocity for x=10t² and falling object
- GraduateStillLearning021
- · Replies 9 ·
Why is work done by a gas on a piston considered positive?
- Cyrus
- · Replies 19 ·
Pumpkin Tower Challenge: Calculating Velocity at Launch & Landing
- Huskies213
- · Replies 2 ·
Force exerted by person on parachute during descent
- Spirit
- · Replies 3 ·
How Slow Should You Go on a Wet, Unbanked Turn?
- gsr_4life
- · Replies 2 ·
How do I attemp such a Question?
- ilovephysicssomuch
- · Replies 7 ·
Calculating Mass and Wave Speed in a String System
- jh24628
- · Replies 1 ·
How Does Integration Affect Particle Acceleration Calculations?
- tandoorichicken
- · Replies 2 ·
Determining the Efficiency of a Fuel
- madoxx
- · Replies 3 ·
Help with interaction forces
- bubbleeyes
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How Do You Calculate the Index of Refraction in This Microscopy Scenario?
- zhen
- · Replies 2 ·
Speed of Muon: Conservation of Momentum/Energy
- Tony11235
- · Replies 3 ·
Initial Velocity for X displacement with air resistance
- Gibybo
- · Replies 6 ·
Calculating Electric Field of a Solid Sphere with Nonuniform Charge Density
- Punchlinegirl
- · Replies 2 ·
Calculating Proton Speed at Points A and B with Fixed Charge -60 x 10^-9C
- binhbinh
- · Replies 2 ·
How Far Away Did the Earthquake Occur Based on Wave Time Delay?
- Saifz
- · Replies 2 ·
What are the possible lengths of organ pipes based on beat frequency?
- FishieKissie06
- · Replies 2 ·
What is the current of the 8.0 ohm resistor in this circuit?
- Firestrider
- · Replies 10 ·
Concurrent And Parrallel Forces 3
- kgbwolf
- · Replies 3 ·
Two doors with different rotation axes: which rotates faster?
- Ollie359
- · Replies 5 ·
EMF induced in rotating helicopter blade in Earth's magnetic field
- Erwin Schrodinger
- · Replies 3 ·
Kinematics / forces - Young girl swinging on a rope
- Huskies213
- · Replies 2 ·
Destructive interference with two speakers 6m apart at 130 Hz
- nutster
- · Replies 5 ·
How Do You Calculate Charges and Forces Between Two Corks?
- donjt81
- · Replies 3 ·
Why am I getting 47.5 instead of 77.5 for this kinematic equation?
- mrserv0n
- · Replies 3 ·
Does voltage split between two wires from a power source?
- MattVonFat
- · Replies 6 ·
How Do You Calculate the Maximum Height of an Object Thrown Upward?
- finlejb
- · Replies 5 ·
How Does Satellite Orbit Duration Affect Gravity Calculation?
- Physics103
- · Replies 5 ·
Calculating Angular Speed: Simple or Complicated?
- angel_romano
- · Replies 4 ·
Wavelength of C above middle C at 512 Hz
- aricho
- · Replies 2 ·
Piano Tuner: Loosen or Further Tighten String?
- allabout42
- · Replies 1 ·
Question on calculating RMS speed
- Eiano
- · Replies 1 ·
How to measure heat energy from burning biodiesel safely
- rocketboy
- · Replies 24 ·
Calculating Significant Figures: 43.49 cm to Meters
- Shay10825
- · Replies 4 ·
AP Physics Lab Ideas for High School
- 123HI
- · Replies 5 ·
Understanding Electrostatics: How Does the Charge Sign Affect the Formula?
- SS2006
- · Replies 4 ·
Is My Understanding of Basic Relativity Concepts Correct?
- fasterthanjoao
- · Replies 3 ·
Circular Motion of a heavy object
- KD
- · Replies 7 ·
How Does Diffraction Grating Explain the Vivid Colors in Nature?
- UrbanXrisis
- · Replies 5 ·
Electrostatic Force Between Conductor and Insulator
- vg19
- · Replies 2 ·
Why Does the Sine Function Create a Squiggly Line on the Number Plane?
- aricho
- · Replies 3 ·
Stroboscope and string vibration
- logicbomb
- · Replies 2 ·
Shell exploding at trajectory peak into equal fragments
- Pyroblaze
- · Replies 7 ·
Deriving formulas for laser wavelength measurement with Michelson interferometer
- kizersi5
- · Replies 1 ·
Circularly polarized light of intensity through a polariser
- Amith2006
- · Replies 8 ·
What is the charge on the other sphere after adding electrons?
- red ink
- · Replies 5 ·
How Do You Calculate Frequency and Period in ASK Modulation?
- dizzzzy23
- · Replies 4 ·
Coulombs law stuff I dont know what they are asking
- red ink
- · Replies 4 ·
Why Is the RMS Coefficient of a Triangle Wave \(\frac{1}{2\sqrt{3}}\)?
- gulsen
- · Replies 1 ·
Calculating Distance: Solving a Velocity Problem with Runners A and B
- kfink85
- · Replies 1 ·
Deep space object in zero gravity subject to forces
- lomantak
- · Replies 3 ·
How Does Molar Mass Affect Gas Molecule Speeds at Equal Temperatures?
- Gimp
- · Replies 1 ·
Braking distance for trains at 72 km/h and 133 km/h decelerating at 1.0 m/s²
- somnium
- · Replies 12 ·
Heat and final temperature question
- kitkat
- · Replies 4 ·
Solving for Acceleration on an Inclined Ramp
- SS2006
- · Replies 4 ·
At what angle is the wall force on a tilted dumbbell maximum?
- DaMastaofFisix
- · Replies 4 ·
How Do You Calculate Deceleration and Projectile Motion Problems?
- somnium
- · Replies 6 ·
CD's have little bumps on them that act like a grating right?
- UrbanXrisis
- · Replies 12 ·
Is it just translational motion or also rotational?
- boris16
- · Replies 7 ·
Potential Difference at Center of Square with q = 0.1uC
- Avitoholis
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Open-Book Tests: Pros and Cons for Students
- fasterthanjoao
- · Replies 4 ·
What is the Initial Acceleration of a Charged Particle in an Electric Field?
- the_d
- · Replies 9 ·
Finding tension in a truss with torque calculations (problem 3.22)
- Jordan_
- · Replies 2 ·
Why don't electric field lines point toward negative charges?
- jakeowens
- · Replies 5 ·
Estimating water volume(so lost)
- TMNT
- · Replies 7 ·
Drawing a picture with a building and runner
- civil_dude
- · Replies 5 ·
How Much Water Evaporates to Remove Heat from Basal Metabolism?
- that1grrl
- · Replies 3 ·
Calculating Speed to Catch a Ball Thrown from a Building
- confused0229
- · Replies 2 ·
Can Four-Wheel Brake Pads Decrease Stopping Distance for Cars?
- hyperspeed88
- · Replies 2 ·
Understanding AM/FM Modulation: Effects of Distortion, Interference, and Noise
- PPonte
- · Replies 1 ·
Understanding Scientific Notation and Exponential Functions
- TMNT
- · Replies 5 ·
Calculating Tension and Reactive Force in a Leaning Ladder System
- Geoff
- · Replies 3 ·
Forces acting on a cart and hanging mass
- pureouchies4717
- · Replies 1 ·
Calculate Height of Falling Roof Tile
- dxlogan187
- · Replies 3 ·
Decibel / Intensity Problem, How do I approach it? .
- Ishu
- · Replies 5 ·
Momentum Vectors: Adding or Subtracting in Isolated Systems
- boris16
- · Replies 2 ·
Proving the Relationship Between Projectile Motion Angles Using Graphs
- team31
- · Replies 4 ·
Why Can the Distance to the Second Source Vary in a Wave Interference Problem?
- preet
- · Replies 1 ·
What is the height of the wedge?
- imdiskid06
- · Replies 3 ·
Which sphere has greater moment of inertia, wood or iron with the same diameter?
- Amith2006
- · Replies 3 ·
Number of Electrons on Sphere: Can't Figure It Out?
- the_d
- · Replies 1 ·