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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Solving dP/dt = 0.2P(1000 - P) with initial conditions
- Luminous Blob
- · Replies 2 ·
How do I draw 3-ethylheptane and 2-methyl-3-ethylhexane?
- peanutthrower
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Period of a pendulum and standing waves in a string
- links0311
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Finding the volume of an elliptical football with semi-axes 14 cm and 73/(2π) cm
- HeyHow!
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How Do I Create a Timer Circuit Using a 555 Timer?
- XP
- · Replies 16 ·
Brain cramp on 2nd elevator problem
- redshift
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Find mass m when frequency changes from 0.88 Hz to 0.60 Hz after adding 600 g
- pupatel
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Bicycle Type Chain [Mechanics] Problem
- maverick280857
- · Replies 2 ·
Refrence Angles & Positive/Negative Angles(Coterminals) HOW?
- mathzeroh
- · Replies 2 ·
Calculate Friction Coefficient Using Pulleys and Mass
- Chaotic Boredom
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Sound Travel Time Calculation for Distant Listeners
- wikidrox
- · Replies 4 ·
Calc Refractive Index of Cylinder w/Mirrored Surface
- Dita
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How Do Free Electrons Move in Response to Atmospheric Potential Changes?
- wikidrox
- · Replies 2 ·
Elastic collision between 248.2 kg and 149.9 kg satellites
- hobo
- · Replies 4 ·
Ball launched by spring up curved incline - speed at top
- redshift
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How do I find the limit of x as it approaches zero
- UrbanXrisis
- · Replies 12 ·
Solid sphere rolling down ramp then flying off horizontally
- Format
- · Replies 2 ·
Pulling thread from a suspended spool at constant height
- e(ho0n3
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What Is the Angular Acceleration of a Disc Rotating About Multiple Axes?
- e(ho0n3
- · Replies 10 ·
Can Car 2 accelerate fast enough to pass Car 1 in midair from a ramp?
- KLdude
- · Replies 14 ·
A Non-Conducting Sphere with a Hole
- jg370
- · Replies 2 ·
What was the speed of the bullet just before impact?
- psruler
- · Replies 9 ·
Field and potential from two -10 μC charges
- orgo
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Griffiths QM problems 4.20-4.31 and 5.30, 6.1-6.3
- mazmaz
- · Replies 4 ·
Work done lifting 80 kg up 8 m stairs and normal force at roller coaster crest
- Format
- · Replies 8 ·
Work on an Incline: Calculating Force and Work
- Format
- · Replies 4 ·
What is the equation for equilibrium of a picture suspended by two strings?
- grahamfw
- · Replies 3 ·
Represent on a diagram the following to vectors
- undertow2005
- · Replies 3 ·
Simple Harmonic Motion Problems with Vertical and Horizontal Springs
- undertow2005
- · Replies 21 ·
Finding angular velocity and tip speed for a falling rod pivoting at its base
- e(ho0n3
- · Replies 5 ·
Net force problem with two rope pulls at different angles
- TigerWoods
- · Replies 2 ·
Wave propagating along a string - Newton's 3rd Law
- Jack3000
- · Replies 3 ·
Calculating Focal Length Using Sign Conventions for Lenses
- oooride
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How to Calculate Moment of Inertia About Each Axis?
- Luminous Blob
- · Replies 5 ·
How to Determine the Centroid of a Complex Plane Area in Calculus?
- agro
- · Replies 2 ·
Three final module physics questions on optics, fluorescence and DC transmission
- i_wish_i_was_smart
- · Replies 2 ·
How do you calculate tension and frictional forces in a system of moving bodies?
- undertow2005
- · Replies 7 ·
Calculating Electron Mass from Magnetic Field and Potential Difference
- invinc1ble
- · Replies 4 ·
Image formation and ray diagrams
- fellowsk
- · Replies 3 ·
Clay colliding with spring-attached board on frictionless surface
- redshift
- · Replies 5 ·
Wave Optics - Single Slit Diffraction
- Alice-Shallom
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Thermal Expansion of copper sphere Problem
- acgold
- · Replies 2 ·
Why does x³/(x²+3x-10) approach -∞ as x→-5+?
- ladyrae
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Why is my mergesort function only working for arrays up to three items?
- discoverer02
- · Replies 4 ·
Work-Energy-Power Textbook Problem
- suffian
- · Replies 2 ·
Electric Forces and Electric Fields in DNA
- Dita
- · Replies 3 ·
Calculate RMS Value of Sawtooth Voltage in Figure 33.54
- oooride
- · Replies 3 ·
Mechanics need to get facts straight
- UrbanXrisis
- · Replies 5 ·
What is the inverse function of x^3 + 1 and how do you find its value at x = 4?
- UrbanXrisis
- · Replies 2 ·
Physics: Box sliding down an inclined plane
- undertow2005
- · Replies 3 ·
Solve Kinematics Problem: Initial Velocity of Ball Thrown Horizontally
- PinkFlamingo
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Understanding Limits: Solving for x^2-2|x|/x
- ladyrae
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How Do You Solve a Double Integral for Area Between z=e^{x^2} and the xy-Plane?
- tandoorichicken
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How Do You Determine Object Location and Magnification in a Concave Mirror?
- KingNothing
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Weird Generating Function prove
- phoenixy
- · Replies 3 ·
Calculating Potential at Point C with Equal Charges on an Equilateral Triangle
- percy_07
- · Replies 3 ·
Cannon shot to hit a target 2000 m away and 100 m high
- PinkFlamingo
- · Replies 2 ·
How Do Hinges Affect Door Movement in Physics Problems?
- Theelectricchild
- · Replies 2 ·
Static coefficient versus kinetic coefficient of friction
- slayerdeus
- · Replies 3 ·
Force/Pressure - Easy Question I think
- acgold
- · Replies 2 ·
Radioactiviy - # of unstable nuclei after 28 hours
- Carbonoid
- · Replies 3 ·
Welding Detached Retinas with Lasers: Solving the Puzzle
- wikidrox
- · Replies 3 ·
Solve Derivative Problem e^{xy} = ln (x+y): Find dy/dx
- Warr
- · Replies 2 ·
Solving the Physics Problem of 20 Tons in a 10 Ton Van
- Hypercase
- · Replies 5 ·
Calculating Potential Difference: Work Done and Kinetic Energy Relationship
- wikidrox
- · Replies 2 ·
Solving Scattering Angle Problem When m < M or m > M
- e(ho0n3
- · Replies 6 ·
Prove that 1+2+4+...+2^(n-1)=2^n-1
- mustang
- · Replies 3 ·
How Does Light Behave When Passing Through Different Materials?
- dawningit
- · Replies 6 ·
How do you add or subtract bar numbers in logarithms?
- creativeassault
- · Replies 6 ·
Electric field and gaussian surface
- PinkFlamingo
- · Replies 5 ·
How Do You Calculate the Thrust of a Rocket at Lift-Off?
- Kodomut
- · Replies 2 ·
How to Solve a Trigonometric Equation with Multiple Solutions?
- Johnny Leong
- · Replies 4 ·
Momentum Changes in a variable mass system.
- Faustian
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What Is the Critical Angle Between Glass and Water?
- MYS9
- · Replies 3 ·
Harmonic motion of a string - Find energy
- UrbanXrisis
- · Replies 4 ·
Solving Resonance Problem: Explain Frequency of Tuning Fork
- WhackyWookie
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Does Velocity Remain Constant at Each Hilltop on a Frictionless Track?
- Texhno
- · Replies 12 ·
Energy to liquefy nitrogen gas and melt aluminum cans
- mustang
- · Replies 3 ·
Finding all isomers of C9H20
- peanutthrower
- · Replies 5 ·
Connecting energy conservation to centripetal acceleration in a loop
- UrbanXrisis
- · Replies 4 ·
How Does Banking Angle Affect the Radius of an Airplane's Turn?
- mcgooskie
- · Replies 3 ·
Electric field at center of charged circular arc
- PinkFlamingo
- · Replies 3 ·
Electric Potential vrs Electric Potential Energy
- celect
- · Replies 3 ·
Calculating Wavelengths & Refraction Angles for Violet Light
- wikidrox
- · Replies 3 ·
Why Does the Force Calculation for a Diving Scenario Include Gravity?
- speg
- · Replies 3 ·
APU University Student Seeks Support for Analogue Electronics Exam Preparation
- skinnyl
- · Replies 14 ·
Average Force and Momentum: What is the Relationship Between Impulse and Force?
- e(ho0n3
- · Replies 2 ·
Solving Flotation Problem: Estimate a Polar Bear's Mass
- WhackyWookie
- · Replies 3 ·
Coaxial capacitor with varying dielectric constant K(r)
- Beer-monster
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Annuities: Determining the Interest Rate
- Itachi
- · Replies 3 ·
Stationary Points of Inflection
- Cummings
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Friction and nonconstant acceleration?
- Zorodius
- · Replies 3 ·
Acceleration Graphs/Tangent Lines
- Marcules
- · Replies 3 ·
Boat drops a hat at point B, catches it at point D—what's the water current?
- PoetryInMotion
- · Replies 3 ·
Physics correspondence course: forces, collisions, fields, magnetism
- i_wish_i_was_smart
- · Replies 7 ·
Finding a Common Household Toy for Physics Presentation
- lalota
- · Replies 7 ·
Synodic period of Jupiter and opposition interval
- cassiopeiae
- · Replies 4 ·
Geometric Sequence; Arithmetic Sequence w/o 2,3,7
- mustang
- · Replies 2 ·
Just these two problems I'll be done.
- mustang
- · Replies 2 ·