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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Why does steeper river gradient make water flow faster?
- Doc G
- · Replies 4 ·
Why does (-y/x²)dx+(1/x)dy=d(y/x)?
- asdf1
- · Replies 7 ·
How Do You Design a Generator to Match Domestic Voltage Specifications?
- brenton
- · Replies 2 ·
Ratios of work to height with same mass
- michaelw
- · Replies 2 ·
Heat current through a spherical shell
- Swatch
- · Replies 2 ·
How Do Tension Ratios Relate to Forces in a Supported Vertical Pole?
- marooned
- · Replies 15 ·
How to find potential difference with two bulbs in series and one in parallel
- forevermoreOC
- · Replies 6 ·
Commutators and solvable groups
- JSG31883
- · Replies 2 ·
Prove that f(sqrt(2),-sqrt(2))=-8<f(x,y)
- pbialos
- · Replies 2 ·
25N Sideways Force on 10kg Box: F = m*a Formula Error
- mystry4
- · Replies 5 ·
Decrease in entropy atoms problem
- pkossak
- · Replies 6 ·
How to Find Matrix A from Given Matrices B and C Using Row Operations
- Rizzamabob
- · Replies 17 ·
Real inverted image half the size of object, lens placement and focal length
- dlaszlo88
- · Replies 3 ·
What is the Taylor expansion for 1/(1-exp(-1))?
- Callisto
- · Replies 7 ·
Force on q1 from q3 and resultant from all three charges
- Bama
- · Replies 5 ·
Finding the limit of a/(1-x^a) - b/(1-x^b) as x->1
- VietDao29
- · Replies 2 ·
G-equidecomposable and equivalence relation
- JSG31883
- · Replies 2 ·
What is the distance of the image?
- brayrbob
- · Replies 2 ·
What is the final temp of the lead bullet?
- pkossak
- · Replies 4 ·
Does swapping columns in a matrix change the product?
- Karate Chop
- · Replies 9 ·
At what temperature will a steel sphere fall through an aluminum ring?
- pkossak
- · Replies 3 ·
Finding intersection points of f(x) = 6√x and g(x) = (x+5)²/36
- SeReNiTy
- · Replies 4 ·
Finding the change of internal energy
- Ester
- · Replies 5 ·
Expressing velocity as a function of the distance
- Beez
- · Replies 2 ·
Understanding Reversible Adiabatic Processes in Thermodynamics
- asdf1
- · Replies 5 ·
How to determine electron configuration
- professor
- · Replies 7 ·
Modular Arithmetic Word Problems
- Benny
- · Replies 3 ·
Why do kinetic and potential energy changes disagree at perihelion and aphelion?
- frisky
- · Replies 4 ·
Predicting bond angles of ions/molecules
- professor
- · Replies 4 ·
Ball colliding elastically then projectile motion from 3.19 m height
- pkossak
- · Replies 4 ·
How is the Poisson's Ratio Formula Derived?
- saravanan_n
- · Replies 2 ·
Scuba Diver Bubble: Diameter at Surface?
- pkossak
- · Replies 2 ·
How to Solve an Improper Integral with High Precision Using Simpson's Rule?
- undefined83
- · Replies 9 ·
At what angle does a particle separate from the top of a sphere?
- abercrombiems02
- · Replies 5 ·
Where can I find the image charge for a point charge near conducting surfaces?
- Reshma
- · Replies 3 ·
Calculating Cumulative Effect of Slowing Earth's Rotation Over 20 Centuries
- NYmike
- · Replies 3 ·
What Are the Inverse Elements in Z_7 and Z_13?
- Benny
- · Replies 2 ·
What Height Is Needed for a Ball to Complete a Loop-the-Loop?
- huskydc
- · Replies 6 ·
Is the Electric Field a Force or an Energy Concept?
- Neuronic
- · Replies 2 ·
Capacitors, Electric fields and dielectrics
- coldturkey
- · Replies 24 ·
Angular Velocity: Reference Dot Speed at 2000 RPM for 8 cm Disk
- marissa12
- · Replies 2 ·
What is the expression for the magnitude of the horizontal force?
- aliciaw0
- · Replies 4 ·
Difficult thermodynamics question (p. chem)
- notawretcheddrunk
- · Replies 4 ·
What are non-trivial zeros in reference to the Riemann Hypothesis?
- whatzzupboy
- · Replies 2 ·
Fluids - floating balloon problem
- Neuronic
- · Replies 2 ·
Finding the electric field in Griffiths
- Reshma
- · Replies 4 ·
Expressing n from a power equation and simplifying a nested radical
- LinkMage
- · Replies 7 ·
Mutual Induction: Induced Current in Solenoids?
- phyphysics
- · Replies 3 ·
Proving Properties of Adjoint Operators in Functional Analysis
- Oxymoron
- · Replies 5 ·
Convergence of the integral ln(sin(x))
- pbialos
- · Replies 10 ·
Understanding Electric Power and Transformer Input: A Detailed Explanation
- phyphysics
- · Replies 4 ·
How Do Trigonometric Identities Connect to Drawings?
- Dainy
- · Replies 2 ·
How Do I Find the Second Linearly Independent Solution of This ODE?
- Benny
- · Replies 4 ·
The square of an orbital period
- badman
- · Replies 2 ·
Motion of a mass on a spring suspended vertically
- brayrbob
- · Replies 2 ·
Acceleration Calculation: 8s to 12s, 64m
- Gadget
- · Replies 3 ·
How Is the Mass of Earth's Atmosphere Calculated?
- rlmurra2
- · Replies 3 ·
Finding time and velocity from 300m height for falling object
- mystry4
- · Replies 3 ·
Solving the Quadratic Equation: sq.rt.(-x^2-4x-3)
- TKDKicker89
- · Replies 5 ·
Calculate Radius of Orbit Around Planet Zeron
- rlmurra2
- · Replies 10 ·
Find the arc length of the given function
- iggybaseball
- · Replies 8 ·
Find final speeds of two carts pushed apart by compressed spring
- huskydc
- · Replies 5 ·
Convergence of ∑(n^(1/n)-1) and continuity of piecewise function at origin
- pbialos
- · Replies 7 ·
Can you express rotations as products of reflections in SO(3)?
- JSG31883
- · Replies 5 ·
Does Melting Ice Change the Water Level in a Glass?
- ussrasu
- · Replies 3 ·
Predicting Polarity: Molecule Dipole Moment Questions
- professor
- · Replies 2 ·
What is the magnitude of the magnetic field at the center of the coil?
- jaymode
- · Replies 9 ·
Is the net force on an object in a spinning test tube zero?
- Swatch
- · Replies 7 ·
Do Digital Signals Really Transmit More Information Than Analog Signals?
- hogben
- · Replies 1 ·
Proving null sequences form a complete space
- homology
- · Replies 7 ·
Finding plane equations with parallel planes and lines
- itzela
- · Replies 5 ·
Conversion between lbf and Newtons
- abercrombiems02
- · Replies 6 ·
Completing the square for x² + y² + 4x - 6y + 12 = 0
- hotrocks007
- · Replies 4 ·
How to get the equation of the plane. [read this one]
- UNIQNESS
- · Replies 2 ·
Astromony Q: Red Shift of 500nm Wavelength Line in Hydra Galaxy
- asdf1
- · Replies 5 ·
Which Elasticity Formula Should You Use for Bungee Jumping?
- brayrbob
- · Replies 8 ·
How Does Acceleration Affect Water Levels in a U-Shaped Tube?
- Swatch
- · Replies 2 ·
Doppler Effect on light question
- asdf1
- · Replies 4 ·
Direction of induced current in a copper rod approaching a magnetic field
- phyphysics
- · Replies 2 ·
Spherical packing of a tetrahedon
- openminded
- · Replies 2 ·
Why does the disk problem require limits of integration but the ring problem doesn't?
- UrbanXrisis
- · Replies 6 ·
Calculating the Speed of a Hopper Car After Dumping Coal
- huskydc
- · Replies 11 ·
Differential Equation and omega
- iggybaseball
- · Replies 7 ·
Finding x² + y² when 1/√(4 − 2√3) = x + y√3
- wisredz
- · Replies 9 ·
Why is a blue laser more effective for burning and reading CDs?
- shaiqbashir
- · Replies 2 ·
Integrating sqrt(10z - z^2) using Trigonometric Substitution
- stunner5000pt
- · Replies 9 ·
Tension in a two-block accelerating system
- Bama
- · Replies 11 ·
A jumble of questions realtive to chemistry
- professor
- · Replies 5 ·
Symmetry Testing: Solutions to 2 Equations
- ability
- · Replies 2 ·
Fluids Homework Help: Pascal's Barrel Burst Problem
- ouma serumula
- · Replies 3 ·
Calculating Water Density at 10.92 km Depth
- Swatch
- · Replies 4 ·
Simple Pendulum Angle Problem: Solving for Angular Acceleration
- badman
- · Replies 5 ·
What is the maximum spring compression in a bullet and block collision?
- huskydc
- · Replies 3 ·
Solving Kinematics Question: Angle Alpha for Archer Aiming at Target
- Yegor
- · Replies 1 ·
Coulomb's law problems with multiple charges
- nutzweb
- · Replies 2 ·
Increasing Induced Current in Mutual Induction
- phyphysics
- · Replies 5 ·
Comparing Gravity on Different Planets Using a Pendulum
- brayrbob
- · Replies 3 ·
Child oscillating on playground swing
- brayrbob
- · Replies 11 ·