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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How Do You Calculate the Initial Velocity of a Bullet in a Momentum Problem?
- physics noob
- · Replies 3 ·
How can I improve my understanding of solving differential equations?
- Beez
- · Replies 5 ·
Finding the lowest point on a sphere-cone intersection using Lagrange multipliers
- Callisto
- · Replies 4 ·
Net force when pushing off a wall on a frictionless skateboard
- Banana15
- · Replies 4 ·
Change of variables in integrals
- Benny
- · Replies 6 ·
Calculating Angular Speed and Acceleration in Open-Reel Tape Decks
- texasgrl05
- · Replies 6 ·
Calculating Kinetic Friction of an 8kg Block
- Swatch
- · Replies 8 ·
Why Can't I Use V = Vo + at to Calculate Time for a Car Falling Off a Cliff?
- Struggling
- · Replies 2 ·
Calculating Speed on Earth's Equator and at Specific Latitude: A Physics Problem
- Nocturn888
- · Replies 2 ·
Why Is the Total Work Done by the Universe on You Zero?
- Link
- · Replies 2 ·
Integral of (2 − sin²x)(2 + sin²x)/cos²x
- Sabine
- · Replies 7 ·
What is the Limit of the Square Root Function Using L'Hopital's Rule?
- monet A
- · Replies 25 ·
Boyle's law and pressure problem
- zeithief
- · Replies 3 ·
What is the Area of a Triangle Inscribed in an Ellipse Using Tangent Lines?
- wisredz
- · Replies 10 ·
What is the angle north of east in this kinematics problem?
- firstwave
- · Replies 4 ·
Charge induced on plastic by metal
- primarygun
- · Replies 3 ·
Block jerked by rotating drum string, angular momentum
- devious_
- · Replies 9 ·
Converting Units: Apple and Cranberry Barrels, Cloud Water Volume and Mass
- lozek
- · Replies 2 ·
What are the limitations of directional derivatives at (0,0)?
- jdstokes
- · Replies 3 ·
How Do You Calculate the Spring Constant?
- John O' Meara
- · Replies 2 ·
How to Calculate Tension in a Rope on an Inclined Surface with Two Unknowns
- bob4000
- · Replies 7 ·
Dipole moment of non-uniform surface charged sphere
- meteorologist1
- · Replies 10 ·
How much water at 25°C to mix with water at 75°C to get 60°C?
- jazzchan
- · Replies 4 ·
What would be its net charge after it has 1% of its electrons removed?
- pwise2682
- · Replies 2 ·
Understanding Forces and Energy in Space Exploration
- m00c0w
- · Replies 4 ·
Solving Rotational Motion: Find Force on Disc Axis (4m+m)
- devious_
- · Replies 2 ·
Finding fourier transfrom of the following wavefunction
- Feynmanfan
- · Replies 3 ·
Finding basis and null space of a 4×5 matrix using spanning set theorem
- Mathman23
- · Replies 2 ·
Solving a Rocket Question with Physics
- Volcano
- · Replies 17 ·
Simplifying integral of 1/(sin(x)+2/cos(x))²
- Yegor
- · Replies 10 ·
Particle Mass m in Cube Box: Density of Eigenstates
- aura
- · Replies 4 ·
How does current flow through a capacitor?
- thesuxx
- · Replies 4 ·
How Does Conservation of Momentum Affect the Motion of a Boy and a Plank on Ice?
- naznad
- · Replies 8 ·
Ratio of charges in Coulomb's Law problem?
- podboy6
- · Replies 4 ·
What is the Formula for Finding the Slope of a Tangent Line on a Curve?
- Lucretius
- · Replies 8 ·
Understanding Angular Velocity and Curl for a Rotating Fluid
- danai_pa
- · Replies 7 ·
Is L'Hopital's Rule Applicable in Solving This Limit Problem?
- monet A
- · Replies 17 ·
Negation of the limit definition: when does lim f(x) ≠ L?
- jdstokes
- · Replies 4 ·
Hat color guessing game with three players and coin tosses
- mamamia
- · Replies 11 ·
Vector Field: Showing Divergence & Curl A = 0
- danai_pa
- · Replies 4 ·
Simple Mechanics Problem Holds Politicians In Disarray ?
- cosmiccase
- · Replies 17 ·
Nonlinear differential equation (quick)
- DivGradCurl
- · Replies 11 ·
Finding torque from power and RPM for a drill
- wickid
- · Replies 6 ·
Conservation of Energy and electric potential
- shorti2406
- · Replies 2 ·
Understanding Partial Fractions and the Chain Rule in Integration
- EvLer
- · Replies 7 ·
When balancing chemical equations
- J_o_S
- · Replies 2 ·
Threshold Frequency Calculation: 3.33eV Work Function
- harhar
- · Replies 2 ·
I with 3 precalculus problems.
- takuma
- · Replies 3 ·
Build a 200g Egg Drop Package for 10m High
- CrewGirl
- · Replies 5 ·
How do I write a critical response journal for Slaughterhouse-Five?
- eax
- · Replies 3 ·
Will a precipitate form if I do this
- Dixie
- · Replies 2 ·
Understanding Argand diagrams for complex numbers
- Benny
- · Replies 2 ·
Atomic Physics: Representing Quantities without Units
- Yegor
- · Replies 2 ·
How to measure light wavelength exactly?
- silin
- · Replies 2 ·
Max Height of Rolling Hoop w/Radius 0.13m and Mass 8.1kg
- melissa_y
- · Replies 2 ·
Fluid Mechanics - Pressure - U-Tube Manometer
- Aerospace
- · Replies 14 ·
Xeno is a spherical planet with a diameter of 2160 Kms
- aricho
- · Replies 5 ·
Evaluating predicate logic formulas with truth values and symbolization
- yankes2k
- · Replies 7 ·
Two watches, one thrown in the air.
- CarlB
- · Replies 41 ·
Solving for the Applied Force on a Hanging Crate
- kye6338
- · Replies 2 ·
Solving Integration Problem: xln{x}/\sqrt{x^2-1}
- itzela
- · Replies 3 ·
Rolling hoop across floor and up an incline
- melissa_y
- · Replies 2 ·
Finding the Landing Path of an Airplane Using Cubic Polynomial Functions
- wisredz
- · Replies 4 ·
Angular Acceleration of a Cyclist's Wheels: 54 Rev in 10.0 s
- melissa_y
- · Replies 2 ·
Why Does Differentiating y=sin(pi*x) Result in y'=cos(pi*x)*pi?
- h_k331
- · Replies 4 ·
Finding Vx and Vy components
- samemikejones
- · Replies 2 ·
Distance traveled by block attached to cylinder
- melissa_y
- · Replies 3 ·
Producing umbra and penumbra with light sources
- queen2020
- · Replies 16 ·
Elastic collision when a lighter particle hits a heavier stationary one
- chynawok
- · Replies 2 ·
Why does 7(x³+4x)⁶(3x²+4) simplify to 7x⁶(x²+4)⁶?
- h_k331
- · Replies 2 ·
Is It Safe for Divers to Hold Their Breath While Ascending?
- verd
- · Replies 2 ·
How Do You Solve for m in a Polynomial Division Problem?
- thomasrules
- · Replies 6 ·
How does the methyl alcohol cork demo with alligator clips work?
- katie14618
- · Replies 2 ·
Deriving the work-energy theorem
- badman
- · Replies 2 ·
How can I rotate a figure around its center?
- Mathman23
- · Replies 6 ·
How does adding a salt of a weak acid to its solution affect the pH?
- joejo
- · Replies 20 ·
Can someone explain string theory simply?
- Snow_Unicorn
- · Replies 3 ·
Question that seems simple but I cant fully get it
- 404
- · Replies 6 ·
How long will a 6V lantern battery power a high-speed motor?
- fomenkoa
- · Replies 2 ·
Is Sonoluminescence Capable of Initiating Nuclear Fusion?
- lawrenca
- · Replies 2 ·
Perpendicular bisectors of the sides in a quadrangle
- Stylewriter
- · Replies 2 ·
Calculating Centripetal Force with Law of Dynamics
- bigman8424
- · Replies 2 ·
Which substance is more acidic
- somsom
- · Replies 4 ·
Why do canoes have a critical speed and why do jet planes fly high?
- gunblaze
- · Replies 9 ·
Deceleratation plus reaction time problem
- bigman8424
- · Replies 2 ·
At what point will a particle fall off a sphere starting from rest at the top
- ssj5harsh
- · Replies 15 ·
Having Trouble Finding the Distance
- Lucretius
- · Replies 7 ·
How do you change the magnitude of a vector?
- omicron
- · Replies 3 ·
Finding ceiling angle from height measurements at triangle vertices
- WY
- · Replies 2 ·
Counting functions in a C program file
- Stanley_Smith
- · Replies 5 ·
How Long to Reach Peak Height for a Thrown Object?
- bigman8424
- · Replies 5 ·
Which is larger? the weight or the force?
- Francis Oliver
- · Replies 6 ·
Synchronization of two clocks at 0.8c relative to observer
- aura
- · Replies 13 ·
What is the Fine Structure Constant?
- Raparicio
- · Replies 4 ·
Finding the order of quotient groups Z_4 × Z_2 / ⟨(2,1)⟩ and Z_2 × Z_4 / ⟨(1,1)⟩
- Oxymoron
- · Replies 15 ·
Gauss-Jordan reduction stuck on system of three equations
- paulchem
- · Replies 5 ·
How do I correctly convert to polar coordinates when evaluating integrals?
- Benny
- · Replies 7 ·
Does a 0.5A light bulb at 120V use 60W?
- Aprilshowers
- · Replies 9 ·
What is the limit as n approaches infinity for (1 + \frac{1}{n+1}) ^ {3-n}?
- shan
- · Replies 4 ·
Velocity of water escaping from a tank leak using Bernoulli's equation
- gunblaze
- · Replies 6 ·