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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Integral of 1/(t^4-25) using trig substitution
- ziddy83
- · Replies 6 ·
Kinecti energy of the electron
- Xamfy19
- · Replies 3 ·
Solving Helmholtz Equation in a Hollow Cylinder
- JohanL
- · Replies 2 ·
Converting between absolute and relative uncertainty
- faisal
- · Replies 2 ·
What is the relationship between pressure and density in a body of water?
- fasterthanjoao
- · Replies 3 ·
Solve tan(x − 30°) = tan(50°) for 0° to 360°
- omicron
- · Replies 13 ·
Using kepler's laws to find mass of planet
- jhson114
- · Replies 8 ·
Find the Velocity of car A before the collision?
- theemassive1
- · Replies 2 ·
How to Solve These Logarithm Equations?
- Nx2
- · Replies 12 ·
Factor 2sin^2 x + 3cos x – 3 = 0
- Liquidice_69
- · Replies 10 ·
Postion of an object at a given time?
- badman
- · Replies 12 ·
Where to Place Weight for Balance on a Hanging Structure?
- campa
- · Replies 2 ·
How Does a Sphere Act as a Valve in Fluid Dynamics?
- Feynmanfan
- · Replies 4 ·
Calculating Cost of 1KWhr Heat from a Reversible Heat Pump
- h.a.y.l.e.y
- · Replies 3 ·
Young's modulus calculation for brass wire stretched by 1 kN
- KaneOris
- · Replies 4 ·
Elements used to make semiconductor componets before silicon
- Kaluence
- · Replies 2 ·
Calculating Amplitude of Oscillation for Colliding Objects on a Spring
- ussrasu
- · Replies 3 ·
Car accelerating under time-dependent force: find speed, distance, and work after 3s
- Silverbackman
- · Replies 16 ·
Force calculations on a hemisphere
- stevemir
- · Replies 2 ·
How to derive the coefficient of thermal expansion?
- tony_engin
- · Replies 2 ·
Calorimeter with steam condensing and ice melting in water
- dagg3r
- · Replies 2 ·
Motion Question: Speed of 150kg Pile Driver Falling 7.5m
- wickid
- · Replies 4 ·
Fertilizer, Neutralizing, Separating Metals
- decibel
- · Replies 7 ·
That classic 3-blocks question
- Celestiela
- · Replies 8 ·
Projectile Explosion: Finding the Larger Mass's Landing Spot
- h.a.y.l.e.y
- · Replies 2 ·
How can I determine the absorption coefficient \mu?
- Kahsi
- · Replies 2 ·
Using Differential Equations to Solve for Velocity of a Free Falling Body
- mekkomhada
- · Replies 3 ·
Finding Resistance and Inductance of solenoid
- teknodude
- · Replies 3 ·
How to Plot the Output Response of a Sawtooth Waveform Using Laplace Transform?
- Brian Moughtin
- · Replies 2 ·
Fluid Mechanics: Questions on 2D Flows
- Raparicio
- · Replies 2 ·
How Do I Solve This Radioactive Decay Problem?
- Sanosuke Sagara
- · Replies 4 ·
Is Radioactive Decay Calculation Confusing?
- Sanosuke Sagara
- · Replies 2 ·
Finding Constants for Partial Fraction Integration
- gordda
- · Replies 2 ·
Does time down equal time up with linear air resistance?
- ptk3
- · Replies 10 ·
Maximum Vibration Period for Object Losing Mass
- truth_hunter
- · Replies 7 ·
Skier on hill with circular crest and cliff jump problems
- nutster
- · Replies 15 ·
What Is the Required Coefficient of Friction for a Mass on an Incline?
- CanUHelpMe
- · Replies 20 ·
How Does Friction Affect a Ball's Energy and Travel Distance?
- lwymarie
- · Replies 8 ·
Parabolic reflector for detecting whispers at distance
- skinnyl
- · Replies 2 ·
Loan repayment with increasing monthly payments differential equation
- DivGradCurl
- · Replies 3 ·
How to Solve the 2005 AP Physics B Free Response Questions?
- newo17
- · Replies 10 ·
Identifying explanatory and response variables in a reading curriculum study
- Pseudo Statistic
- · Replies 2 ·
What is the Formula for Magnetic Force in Electromagnets?
- ccflyer
- · Replies 6 ·
How do you determine the wavelength of the string?
- ~angel~
- · Replies 5 ·
How Does Physics Explain Collisions in Ice Hockey?
- jatinder_tiwana
- · Replies 2 ·
Minimising potential energy in question 3
- babtridge
- · Replies 3 ·
Carnot engine with radiative heat loss minimizing radiator area
- nineeyes
- · Replies 3 ·
Pressure and density in flluids
- sghaussi
- · Replies 2 ·
Question regarding Atomic Structure (orbits)
- Sanosuke Sagara
- · Replies 3 ·
Question regarding radius of circular paths (chapter the nucleus)
- Sanosuke Sagara
- · Replies 2 ·
What Is the Coefficient of Kinetic Friction for a Box Sliding Down a Ramp?
- cavery4
- · Replies 2 ·
What is the correct method for finding the angle of vectors in physics?
- badman
- · Replies 5 ·
Finding reactions on an L-bracket with moment and force
- Satoy
- · Replies 4 ·
Combining logarithms with coefficients and exponents
- cscott
- · Replies 12 ·
How Do You Calculate Projectile Motion for a Stone Thrown Upward from a Cliff?
- Jenybeny27
- · Replies 7 ·
Help with moment of inertia problem
- iNCREDiBLE
- · Replies 8 ·
Struggling with Integrals? Here's How to Improve!
- Vadim
- · Replies 2 ·
Gauge pressure needed to lift a car with a hydraulic piston
- sghaussi
- · Replies 12 ·
Finding the quantity of a radioactive substance and standard units
- EIRE2003
- · Replies 2 ·
Which formula is correct for average velocity
- AnthonyC
- · Replies 9 ·
Power Loss in a 10kV, 5ohm Transmission Line
- DB
- · Replies 2 ·
How Do You Solve Basic Physics Problems Using Textbook Formulas?
- Lizz
- · Replies 5 ·
How Do Mechanics and Physics Solve Practical Problems?
- woodworker101
- · Replies 10 ·
Metal ring repelled from AC coaxial coil
- nvalentour
- · Replies 2 ·
Finding velocity components from range and time in projectile motion
- AnthonyC
- · Replies 9 ·
How Do You Calculate Oscillation Periods and Forces on a Dam?
- blackbody
- · Replies 2 ·
Antiderivative for 1/[x²√(1+x²)]?
- Zorodius
- · Replies 13 ·
Is the Electric Field of a Charged Disc Correct?
- Reshma
- · Replies 11 ·
How to integrate x³√(x² - 8)
- waterchan
- · Replies 5 ·
What Causes Time to Differ for Twins in the Twin Paradox?
- rczmiller
- · Replies 7 ·
Projectile Height Calculation: Time to Reach 10m with Given Initial Velocity
- Bartosz
- · Replies 2 ·
Solving Mechanics Problem: Velocity of Rope Through Hole
- z0r
- · Replies 11 ·
Calculating Average Kinetic Energy and RMS Speed of Gas Molecules
- cogs24
- · Replies 2 ·
2D shear velocity field: expansion, rotation, deformation and energy
- rolandk
- · Replies 2 ·
Will cardboard boat float in pool racing project?
- Tokimasa
- · Replies 3 ·
Nonuniform bar suspended by two cords at different angles
- bullroar_86
- · Replies 5 ·
Quick math probability question
- seiferseph
- · Replies 14 ·
Pion decay to muon and antineutrino: kinetic energies
- andrew410
- · Replies 2 ·
What's the difference between derivatives and partial derivatives?
- omgitsroy326
- · Replies 7 ·
Electric Fields of Like Charges
- Apple123
- · Replies 20 ·
What Charge Causes a Pea to Discharge in Dry Air?
- Jodi
- · Replies 2 ·
How to Build an Electromagnetic Motor for a School Project?
- rocketboy
- · Replies 1 ·
Magnetic force on wire inside cylindrical current bundle
- tiagobt
- · Replies 2 ·
Torque, bridge equilibrium, mechanical advantage, and rolling sphere problems
- woodworker101
- · Replies 4 ·
How Do You Calculate Friction Coefficients in Physics Without Mass?
- jen333
- · Replies 2 ·
Verify Solutions to First Order PDEs
- Oxymoron
- · Replies 4 ·
Do oxidation state rules cover compounds like AlCl3 and MgSO4?
- Omid
- · Replies 2 ·
Part B: "150W Engine Efficiency - Heat Given off Per Cycle
- jennypear
- · Replies 2 ·
Applying the ratio test to the series (2n)!/n^n
- RadiationX
- · Replies 14 ·
Understanding Refraction: Molecular Structures and their Unique Effect on Light
- !Live_4Ever!
- · Replies 2 ·
Finding eigenvectors for competing species system
- andrew410
- · Replies 7 ·
AC Circuit Physics: Voltage vs. Current Relationships
- suf7
- · Replies 2 ·
Finding torques from a shark hanging on a rod
- Inv.e[ln(t*r)]=t
- · Replies 8 ·
Solving Lever Mechanics: Find Ideal Mechanical Advantage
- billnyerocks
- · Replies 5 ·
Solving Green's Function for t^2x''+tx' - x = 0
- Oxymoron
- · Replies 6 ·
What is the Relationship Between Magnetic Field Strength and Velocity of Charge?
- roger
- · Replies 3 ·
Uniform Convergence Analysis of $\sum_{n=1}^{\infty}2^{n}\sin \frac{1}{3^{n}x}$
- twoflower
- · Replies 2 ·
How Does a Carnot Refrigerator Work Between Different Temperatures?
- ziddy83
- · Replies 4 ·
How Can I Solve Non-Linear Equations for Motion with Multiple Variables?
- Jim_Shah
- · Replies 4 ·