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 Post-Collision Velocities Using Momentum and Energy Formulas
- beanryu
- · Replies 7 ·
Football Launch Angle - Horizontal Distance Calculation
- Elphaba
- · Replies 4 ·
Where can I find quotes on black holes to support my research paper?
- KenshinX
- · Replies 4 ·
Why is the percentage uncertainty in momentum equal to the momentum itself?
- CollectiveRocker
- · Replies 20 ·
Unknown unstretched elastic cord length
- gosbun
- · Replies 2 ·
How can I find the vector from a given magnitude and direction?
- jjiimmyy101
- · Replies 9 ·
When is the image height equal to the object height on the principal axis?
- JimmyRay
- · Replies 7 ·
Atmospheric Pressure: Why Does It Stay the Same?
- prasanna
- · Replies 2 ·
Find the coefficient of kinetic friction problem
- Tabe
- · Replies 9 ·
Ball on string in vertical circle with tension equal to weight at top
- UrbanXrisis
- · Replies 7 ·
Entropy change for monoatomic gas from 298K to 398K and 1 to 5 atm
- stunner5000pt
- · Replies 5 ·
Calculating Velocity of a Block Launched by an Ideal Spring
- king_naeem
- · Replies 3 ·
How do I find transformation rotation?
- footprints
- · Replies 5 ·
Checking my thermodynamics laws self-assessment answers
- PhysicsNovice
- · Replies 11 ·
How can I do this?Calculating Torque on a Dam Gate Hinged at the Water Surface
- gunnar
- · Replies 4 ·
Are Linearly Dependent Vectors Always Dependent in Combinations?
- Chen
- · Replies 15 ·
Is Y(n) a Decreasing Sequence Given Its Definition as an Infimum?
- semidevil
- · Replies 3 ·
How does the spring scale read in different elevator scenarios?
- trixid
- · Replies 3 ·
How Does Momentum Affect Collision Outcomes and Motion on Ice?
- Soaring Crane
- · Replies 4 ·
Angular momentum and torque in the Earth-moon system
- freek
- · Replies 5 ·
How Are Position and Momentum Connected by the Uncertainty Principle?
- CollectiveRocker
- · Replies 8 ·
Apparent weight of pilot in vertical circular motion
- vee123
- · Replies 4 ·
Why Does a Box Move When I Apply a Force?
- repugno
- · Replies 9 ·
How Is the Maximum Kinetic Energy of Compton Scattered Electrons Calculated?
- niehls
- · Replies 10 ·
Find the magnitude of the force that stops the bullet
- Tabe
- · Replies 3 ·
Spring compression and distance for roller coaster stopping system
- lidomonkee
- · Replies 2 ·
Bear on a beam supported by a wire at 60 degrees
- Physically Impaired
- · Replies 2 ·
What is the Domain and Range of y=2(3^x)-1?
- aisha
- · Replies 15 ·
Discovering Horizontal Acceleration: Newton's Law Question Solved
- scan
- · Replies 7 ·
Minimum magnetic field to move current-carrying wire north
- usatkling
- · Replies 4 ·
Convert cos^2 (2t) into Laplace Table Form
- TSN79
- · Replies 4 ·
Magnetism in infinite conducting slab
- daveed
- · Replies 3 ·
Electricity and Magnetism
- soccerjayl
- · Replies 5 ·
Couple of pretty simple liquid q's
- Jacob87411
- · Replies 3 ·
Find the Local Maxima of f(x)=2x^3-3x^2-12x+3
- chjopl
- · Replies 11 ·
Power from Niagra Falls: 1.2x10^6 kg/s Fall of 50 m
- listera
- · Replies 4 ·
What Happens to a Ball Dropped Through a Hole in the Earth?
- Gramps
- · Replies 11 ·
. Simple satellite / rocket seperation problem is my thinking wrong?
- Tschew
- · Replies 2 ·
Finding molecular formula of organic compound with C, H and Br
- Mathman23
- · Replies 2 ·
Proton beam path at an angle to a magnetic field
- MightyMeanie
- · Replies 2 ·
Friction between table and pool ball
- Drey0287
- · Replies 3 ·
What are the typical values of current through
- Mo
- · Replies 2 ·
Copper and brass cylinders stacked under 6500 N compressive force
- benzimm86
- · Replies 2 ·
Three resistors, capacitor, and battery circuit with voltmeter
- soccerjayl
- · Replies 13 ·
How fast must a spaceship travel for 1 day aboard to equal 2 days on Earth?
- CollectiveRocker
- · Replies 8 ·
Proving Spin-1/2 Spinors are Eigenvectors to $\hat S^2$
- danja347
- · Replies 2 ·
Newtonian Mechanics: 2 Questions Answered
- Clari
- · Replies 4 ·
How Is the Reaction at the Joint Calculated in a System of Two Uniform Rods?
- ashokmittal
- · Replies 2 ·
Young's double slit interference fringe spacing
- redshift
- · Replies 2 ·
Why is a falling pumpkin less than 1 m behind the truck?
- moonpearl
- · Replies 7 ·
Electromagnetic induction problem help
- ambuj123
- · Replies 2 ·
Designing a Basic Overhead Projector: Physics, Calculus, and Mirrors
- kdinser
- · Replies 2 ·
Solving Omega in Angular Velocity Equations: A Test Prep for Sarah
- sarahowen
- · Replies 3 ·
I'm not sure how to start solving this
- zekester
- · Replies 2 ·
Solving Systems of 2nd Order DE's with Eigenvalues and Eigenvectors
- Spectre5
- · Replies 9 ·
Confusing static equilibrium problem
- barnsworth
- · Replies 2 ·
What fraction of the sign's weight is supported by each rope?
- ek
- · Replies 2 ·
Solving a Population Growth Problem: Finding the Annual Death Rate
- heavyarms
- · Replies 2 ·
Static friction force? mew? do what now?
- star227
- · Replies 6 ·
What Are the Common Misconceptions About Momentum?
- Silimay
- · Replies 5 ·
Here's a question, today I had on my test
- FrostScYthe
- · Replies 2 ·
How Far Can You Safely Walk on a Pole to Rescue a Cat at the Grand Canyon?
- Planckenstein
- · Replies 3 ·
Creative Math Projects: Seeking Grade 11 Ideas!
- Dooga Blackrazor
- · Replies 2 ·
Triangle on a sphere (Schutz, 6.10)
- hellfire
- · Replies 2 ·
Speed needed for lead sphere and steel bolt to complete vertical loop
- zingbang222
- · Replies 2 ·
Linear polynomial least squares
- PhysicPhanatic
- · Replies 6 ·
Why Can't I Solve This Complex Math Equation?
- aisha
- · Replies 5 ·
To what angle does each ball rebound?
- viendong
- · Replies 2 ·
Calculating Rotational Properties of a Rotating Disk
- lucifer
- · Replies 7 ·
Answer: Intensity Outside a 43.5 dB Quieter Room
- chattkis3
- · Replies 2 ·
Tension, vectors and angles, oh my
- moonpearl
- · Replies 4 ·
Calculating Projectile Motion Time and Distance with Angle 37 Degrees
- Drey0287
- · Replies 4 ·
Finding solid fraction and density of hollow rock specimens
- tmkgemini
- · Replies 5 ·
Extra Cedit Algebra II Problems (2 of them)
- sportsguy3675
- · Replies 18 ·
Balancing equations and writing word equations for chemical reactions
- Raza
- · Replies 6 ·
Two Extra Credit Rotation Questions
- Jacob87411
- · Replies 6 ·
How to find the Fourier sequence for a function with a period T=2?
- TSN79
- · Replies 12 ·
More energy is needed to walk down stairs than to walk horizontally
- Tabe
- · Replies 4 ·
Finding decay time for Pu-239 from 10 grams to 1 gram
- aisha
- · Replies 12 ·
Decoding a matrix encryption cipher
- Dooga Blackrazor
- · Replies 2 ·
Calculating Force of 29.9kg Barbell Underwater
- SnowOwl18
- · Replies 6 ·
Solve 3^(2x+1)=70 - Is It Possible Without a Graphing Calculator?
- aisha
- · Replies 15 ·
Calculating Moment of Inertia and Angular Motion of Stick
- Naeem
- · Replies 2 ·
Magnetic Force Question Really givin me a heart burn
- saltrock
- · Replies 3 ·
Atomic and Nuclear Radii Evidence: An Overview of Size Scales in Atomic Physics
- briton
- · Replies 2 ·
What Is the Correct Work Done in This Thermodynamic Cycle?
- Lakers08
- · Replies 6 ·
The current balance- an application
- agirlsrepublic
- · Replies 2 ·
Question Regarding Einstein's TSR
- dekoi
- · Replies 2 ·
Programming the TI-83+ SE for Projectile Motion
- Drayakir
- · Replies 2 ·
Simplify fractions of polynomials
- aisha
- · Replies 3 ·
Cyclotron, why do they not use electric fields?
- gillgill
- · Replies 4 ·
Min/Max angle of a force applied to stationary mass.
- pirland
- · Replies 4 ·
Calculate the speed of the block
- gunnar
- · Replies 6 ·
Even Order Groups: Counting Elements of Order 2
- SqrachMasda
- · Replies 2 ·
Rotational inertia of two particles and rods rotating about axis O
- Zlex
- · Replies 2 ·
Related rates problem with Ohm's law V=IR
- kreil
- · Replies 4 ·
Finding airplane weight from airspeed and wing area
- SnowOwl18
- · Replies 6 ·
Testing if a piecewise function is even or odd
- TSN79
- · Replies 5 ·
Wall of Death motorcycle stunt and electron motion in crossed fields
- saltrock
- · Replies 5 ·