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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Bouyant force and apparent weight
- chantalprince
- · Replies 2 ·
How Does Resistance Affect Current in Parallel Circuits?
- stickplot
- · Replies 2 ·
What is a differential equation?
- KAV
- · Replies 3 ·
How Do Astronauts Calculate the Acceleration of an Asteroid in Space?
- Jumpman24
- · Replies 3 ·
Determine the maximum current discharged from a battery
- roonaldo17
- · Replies 6 ·
How Are G and g Related in Gravity?
- Turquoise
- · Replies 1 ·
How Do You Calculate the Force Exerted by Water on a Sled?
- alevis
- · Replies 1 ·
Ratio of max height of a projectile to planet radius
- yankans
- · Replies 1 ·
Momentum and energy in a self-propelled vehicle with descending load
- potato1
- · Replies 2 ·
Calculate Weight of 75.0kg Woman on Earth
- Mathcaptor
- · Replies 6 ·
Coulomb's Law Can someone I don't understand how to do this.
- ScottL
- · Replies 2 ·
Is Centripetal Force the Only Force in Space-Based Circular Motion?
- shyboyswin
- · Replies 1 ·
Titanic and Iceberg. What forces take part in the crash?
- ibramgaunt
- · Replies 1 ·
How much energy is used to operate the oven for 7 hours?
- keemosabi
- · Replies 8 ·
Frictionless Peg Slide On Wedge
- LadyBlade
- · Replies 4 ·
Tutorial: Half-Lives and Radioactive Decay
- jacksonpeeble
- · Replies 3 ·
How do I calculate the average deceleration of a car?
- hellothere.
- · Replies 2 ·
Calculate Wave Properties: Frequency, Wavelength, and Speed
- shemer77
- · Replies 3 ·
Thermodynamics - Melting of Ice
- TheBaker
- · Replies 3 ·
Maxwell Boltzmann Distribution Question
- Crosshash
- · Replies 7 ·
How Long Does a Bicycle Lead a Car After a Traffic Light Turns Green?
- jcharles513
- · Replies 1 ·
How Do You Determine Spring Compression in Harmonic Motion?
- zbirdie
- · Replies 1 ·
Newton's Second Law: Calculating Net Force on a Wagon with a Child (28.5kg)
- Mathcaptor
- · Replies 1 ·
What Is the Charge on Each Pith Ball?
- bmandrade
- · Replies 3 ·
Uncertainties- am I doing them right?
- Dynamite
- · Replies 1 ·
One-dimension collision question
- physics_geek
- · Replies 13 ·
How Do You Convert Measurement Uncertainty When Changing Units?
- Dynamite
- · Replies 1 ·
Astronomic gravitation problems
- philadelphia
- · Replies 2 ·
How Do You Determine the Source Location of a Sound Wave?
- Grapz
- · Replies 7 ·
Electric potential with charges
- canadianballa
- · Replies 3 ·
Inelastic Collision with Spring
- edud8
- · Replies 4 ·
Motorist braking to reach red light when it turns green
- inevitable?
- · Replies 21 ·
Constant acceleration problem involving NASA exploration vehicle.
- fuhgidabowdit
- · Replies 2 ·
Gravitational acceleration/tension?
- Bigdane
- · Replies 1 ·
Vertical Circular Motion problem (Carnival)
- 1517279
- · Replies 9 ·
How Much Does Gravity Affect Weight on Mercury?
- Bigdane
- · Replies 2 ·
Honors Physics Momentum Problem
- fantolay
- · Replies 1 ·
What Is the Maximum Force on a Rope Attached to a Car?
- theshadow6
- · Replies 6 ·
Why is the velocity of a satellite in a circular orbit twice the orbital radius?
- Maiia
- · Replies 5 ·
Law of conservation of kinetic energy?
- Dynamite
- · Replies 9 ·
How do wavelength and frequency change when sound enters water at 4x faster speed?
- Greywolfe1982
- · Replies 4 ·
Is a Vector Perpendicular to the Sum of Two Perpendicular Vectors?
- sdoyle
- · Replies 20 ·
Power output of 1200 kg car accelerating to 80 km/h in 10 s
- roxxyroxx
- · Replies 6 ·
Question on Rotational Dynamics (Just understanding something, have solutions)
- Quantumpencil
- · Replies 2 ·
What Type of Energy is Associated with Object-Environment Interaction?
- ne_patsfan12
- · Replies 7 ·
Child sliding down 4.0 m high slide with friction losses
- roxxyroxx
- · Replies 3 ·
What is the impulse exerted on objects A and B during their collision?
- Joe Jacobs
- · Replies 2 ·
Find the tension of the system (picture included)
- fern518
- · Replies 8 ·
Lenz Law: Which Capacitor Plate Becomes Positive?
- starless.aeon
- · Replies 2 ·
Cart Explosion- Is Energy conserved?
- Dynamite
- · Replies 2 ·
Adding two sound intensities in decibels
- joe215
- · Replies 2 ·
Car jack efficiency: 3000 N load, 10 cm lift, 1200 N input over 30 cm
- roxxyroxx
- · Replies 1 ·
Elastic Collision problem with atoms.
- hellomister
- · Replies 1 ·
Pushing capacity of a human being
- flfgw
- · Replies 2 ·
What is the coefficient of kinetic friction between the block and the incline?
- alevis
- · Replies 2 ·
Show that the initial speed is vi = sqrt 2gL(l-cosθ).
- alevis
- · Replies 1 ·
The Vector Nature of Newton's Second Law
- Turquoise
- · Replies 1 ·
Simple Solenoid Problem Solution Using Ampere's Law
- ABoul
- · Replies 3 ·
Electricity - polarization/grounding
- Elbobo
- · Replies 2 ·
Total mass of galaxy, circular acceleration and gravity
- Maiia
- · Replies 2 ·
Compute mass of black hole, gravitational and circular acceleration
- Maiia
- · Replies 2 ·
Small oscillations of constrained particle
- Math Jeans
- · Replies 3 ·
What Minimum Speed Must Jane Have to Swing Across the River?
- alevis
- · Replies 1 ·
Calculate Min Initial Kinetic Energies for Javelin, Discus, Shot Throws
- alevis
- · Replies 1 ·
Rebounding: Basketball Player Exerts 280lbs of Force on Floor
- 09mcibrian
- · Replies 1 ·
Is Your Experimental Value Within the Accepted Range?
- Greywolfe1982
- · Replies 2 ·
Angular displacement in radians problem
- bikerboi92
- · Replies 8 ·
Why use +/- to specify direction for scalar quantities
- harshinig
- · Replies 2 ·
How Can Vernie and George Swing Across the River Despite the Wind?
- alevis
- · Replies 1 ·
Finding Electric Field at Point x Away from Origin
- musicfairy
- · Replies 3 ·
Bernoulli's Equation of water tower
- keemosabi
- · Replies 2 ·
Kinematics/Vectors Homework: Initial Velocity, Acceleration, Speed & Direction
- bikerboi92
- · Replies 3 ·
What is the Mass Density of a Floating Cylinder in Water?
- ch2kb0x
- · Replies 8 ·
How Much Does an Empty Lift Move When Entered by 8 Passengers?
- Gregg
- · Replies 16 ·
What is the charge on each sphere in a force balancing problem?
- The Motif
- · Replies 20 ·
How Does Torque Affect Angular Acceleration in Rotational Motion?
- Swagger
- · Replies 8 ·
How far above the top of a fence?
- noaster
- · Replies 3 ·
Hemisphere being pulled by a rope problem
- brianws33
- · Replies 1 ·
F=ma calculation in vector format
- rugapark
- · Replies 3 ·
Calculating Charge from 2D Electrical Force Problem
- Elbobo
- · Replies 7 ·
Two identical charges repelling from rest 3.5 cm apart
- jakey
- · Replies 1 ·
Science Fiction Movie and sound waves
- ahrog
- · Replies 5 ·
Sir Isaac Newton contest solutions 2007
- Uncle6
- · Replies 4 ·
Destructive Interference of Light Waves in Bubble Film (165 nm)
- stickplot
- · Replies 2 ·
Find Area of flattened gold with limited info.
- Kaleb
- · Replies 2 ·
What is the path on the pV diagram for an isobaric expansion from 2 m^3 to 5 m^3?
- ApexStudent1
- · Replies 1 ·
Factor label method with rotational motion
- wallace13
- · Replies 1 ·
Gauss's law and conductors in electrostatic equilibrium
- jdefrancesco
- · Replies 15 ·
What Type of Charge is Generated by Touching a Door Handle?
- stickplot
- · Replies 2 ·
How Does Batman's Jump Impact the Speed of a Getaway Boat?
- wallace13
- · Replies 3 ·
Oscillatory motion in pendulums, skateboards, and grandfather clocks
- ahrog
- · Replies 3 ·
Voltage Analysis of Parallel RC Circuit with Series Components
- henryparrot
- · Replies 6 ·
Solved: Physics 20-1 Energy - Mass on a Spring
- physicznoob
- · Replies 3 ·
Balls and clay blob - Collision problems
- nns91
- · Replies 8 ·
Harmonic movement of a spring question
- transgalactic
- · Replies 5 ·
Can a Grocery Bag Hold 20kg of Groceries with 5 m/s2 Acceleration?
- delfam
- · Replies 10 ·
Why is minimum thickness λ/2 for oil film reflection, not λ/4?
- Sevenheartz
- · Replies 8 ·
Electric Fields potential of zero
- nokia8650
- · Replies 8 ·
Light waves through grating. Min and Max measurements of wavelenghts in nm
- Mugen112
- · Replies 1 ·
Momentum/Elastic Potential Energy
- hellomister
- · Replies 2 ·