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 many bounces until the ball reaches a height less than 15cm?
- ms. confused
- · Replies 20 ·
Trouble Drawing Diagram: 10 A Current North, 42° East Magnetic Field
- usfz28
- · Replies 2 ·
Maximizing sum of distances to power alpha on a sphere
- vladimir69
- · Replies 2 ·
Calculating Speed of 4kg Block using Energy Methods
- kitz
- · Replies 6 ·
Using gamma spectra to identify elements in rocks
- muralee
- · Replies 2 ·
Chemistry final exam questions on equilibrium, pH, and redox reactions
- Dooh
- · Replies 9 ·
What is the effect of a steady force on a cyclic object on a smooth surface?
- C0nfused
- · Replies 6 ·
How Is the Force Between Two Electrons Calculated at a One Meter Distance?
- Aprilshowers
- · Replies 8 ·
Calculating Volume Displaced for Sinking Objects
- michaelw
- · Replies 7 ·
Moment of Inertia of a particle
- verd
- · Replies 22 ·
Understanding X-Ray Spectra Graphs
- Snowy
- · Replies 4 ·
Measuring Spheres: How to Use the Formula (4/3 π r3)
- cubed
- · Replies 4 ·
Calculus N00b: Find the Second Derivative
- gschjetne
- · Replies 5 ·
Decomposing B_{ij} into Symmetric and Antisymmetric Tensors
- JohanL
- · Replies 2 ·
Solve for -3/(2t^-2) - 2t + 7/2
- laker_gurl3
- · Replies 2 ·
Student Needs Advice on Nanotechnology Project for Power Engineering
- inoni
- · Replies 1 ·
A few integral questions i with
- laker_gurl3
- · Replies 10 ·
Flagpole Stability: Calculating Maximum Tension
- MAPgirl23
- · Replies 2 ·
Objects Moving with a Constant Velocity & Constant Acceleration
- Naeem
- · Replies 5 ·
Help with Physics: Get a Deeper Understanding
- Memphis_Physics
- · Replies 10 ·
Area between sin(x) and πx/12 curves
- laker_gurl3
- · Replies 8 ·
Calculus: Solve the following differential equation
- laker_gurl3
- · Replies 3 ·
Moment of Inertia: 3 Point Mass, Massless Rods, Rotational Motion
- Celestiela
- · Replies 2 ·
Second partial derivatives of z² + sin x = tan y
- schattenjaeger
- · Replies 3 ·
Horizontal hinge forces on a suspended door
- MAPgirl23
- · Replies 8 ·
Tension and height of flagpole
- MAPgirl23
- · Replies 6 ·
Proving Linear Operators and Matrix Similarity
- hola
- · Replies 2 ·
How Do You Calculate Jet Mass Using Force and Acceleration?
- mamelancon84
- · Replies 7 ·
What is the pressure exerted by an ice cube sliding down a frictionless incline?
- briandeblis
- · Replies 15 ·
Photodiode carrier transit time
- Infidel22
- · Replies 2 ·
How do forces on a proton and electron compare near a point charge?
- Aprilshowers
- · Replies 4 ·
Energy needed to boil mercury vs. water
- Aprilshowers
- · Replies 3 ·
Why do champagne bubbles rise in straight lines at constant velocity?
- Raparicio
- · Replies 5 ·
What were the speeds of the pedestrian and the cars?
- DivineNathicana
- · Replies 5 ·
Boat crossing 50 m river perpendicular to shore with 3 m/s current
- AnthonyC
- · Replies 10 ·
Two charged spheres hanging 40° apart—how to find the charge
- bullroar_86
- · Replies 6 ·
Force on train wheels from track while braking on a curve
- amose093
- · Replies 7 ·
If Ax = 0 has one solution, show m>=n
- WY
- · Replies 3 ·
Solving a Differential Equation with a Fourier Series
- VinnyCee
- · Replies 12 ·
How Do Mirrors Form Images and Affect Their Orientation?
- chase222
- · Replies 2 ·
Picture hanging on a nail with string at 45 degrees
- chynawok
- · Replies 3 ·
Epsilon Delta and The Triangle Inequality
- DieCommie
- · Replies 29 ·
Two masses on a single spring how far will each go when released?
- michaelw
- · Replies 11 ·
If a·b = c·b for all vectors b, show that a = c
- jeanf
- · Replies 31 ·
Solving Collision Problem: Velocity and Force
- Jchem
- · Replies 5 ·
Why does ∫|x|dx from -2 to 0 equal the integral from 0 to 2?
- ktpr2
- · Replies 8 ·
Understanding Integrating Factors and Differential Operators
- Tom McCurdy
- · Replies 5 ·
Why is there no visible light interference from two light sources?
- bullroar_86
- · Replies 2 ·
Fundamental Frequency of Helium-Filled Pipe
- ~angel~
- · Replies 5 ·
I'm sorry, I'm not sure what your question is. Could you clarify?
- twoflower
- · Replies 13 ·
Probabilities of molecules being somewhere
- adamc637
- · Replies 1 ·
Conceptually ok problem, but very difficult to solve
- Corneo
- · Replies 2 ·
How Does Temperature Influence Charge Carriers in Semiconductors?
- sh0x
- · Replies 2 ·
How Do You Solve the Limit of (e^x * tan^-1 y) / y as (x, y) Approaches (0,0)?
- schattenjaeger
- · Replies 11 ·
How Do You Minimize the Squared Distance to a Line Using Linear Algebra?
- Mathman23
- · Replies 26 ·
Solving a Beam Question: 3000 kg, 6000 kg*m, Calculate Force & Tension
- afromanam
- · Replies 2 ·
What is the Tension in a Hammock with a 150lb Person and 40° and 20° Angles?
- in10sivkid
- · Replies 14 ·
How do I find the index of refraction?
- chibi_lenne
- · Replies 2 ·
Force and oscillations of 2.12 kg mass on spring
- DDS
- · Replies 18 ·
Concave mirror image distance with 24mm object at 12cm
- mhl2188
- · Replies 2 ·
Calculating Average Force of Friction on a Roller Coaster
- Frank_Horrigan
- · Replies 4 ·
Difficulty With Wording of a Problem
- verd
- · Replies 2 ·
Proof of the Theorem: Omega and D Relationship
- Terrina
- · Replies 2 ·
Solution to (D+2)(D+3)y=4t+5e^t with Initial Conditions y(0)=4, y'(0)=5
- RadiationX
- · Replies 8 ·
Which Formula Calculates Gravity's Force on a Block on a Ramp?
- J_o_S
- · Replies 2 ·
Find Force at Support Point of Diving Board
- MAPgirl23
- · Replies 7 ·
How Does Atmospheric Pressure Influence Boiling Point?
- PhHsSuga05
- · Replies 2 ·
Double checking needed on 2 Differential Equations
- VinnyCee
- · Replies 3 ·
Here i am again Newtons second law
- badman
- · Replies 9 ·
Vector Diagram for Frictionless Inclined Plane
- AnthonyC
- · Replies 13 ·
What Units Should Acceleration Be Measured In?
- J_o_S
- · Replies 4 ·
Measuring temperature profiles
- Tsunami
- · Replies 2 ·
Why do things not float in a airplane like they do on a satellite?
- michaelw
- · Replies 16 ·
Primitive Function: Finding the Right Direction
- twoflower
- · Replies 2 ·
How Can You Build a DC Electric Motor with Coils and a Magnet?
- akademiks
- · Replies 2 ·
Ball rolling without slipping to reach the top of a loop
- mprm86
- · Replies 2 ·
A planet with mass m, and radius r .
- J_o_S
- · Replies 6 ·
Why Do Some Odd Numbers Fail to Be Prime?
- vroman
- · Replies 8 ·
Gravitational Potential Energy: Does it Really Rise?
- michaelw
- · Replies 5 ·
Copper(II) Sulphate Electrolysis §§ COM Electrolysis of Copper(II) Sulphate:
- primarygun
- · Replies 2 ·
Angular momentum eigenstates and total mom. S?
- qqchico
- · Replies 2 ·
How much gold is deposited in 6 hours of electrolysis at 0.540 A?
- ~angel~
- · Replies 4 ·
How to take a complex conjugate of a 5*5 matrices?
- qqchico
- · Replies 2 ·
What physics concepts can improve my mini-project design?
- ballahboy
- · Replies 8 ·
Maximum Friction Force on a Ladder: Calculations and Results
- MAPgirl23
- · Replies 3 ·
What Are Bow Shock Waves and Why Do They Matter?
- Raparicio
- · Replies 2 ·
Proving Velocity Vector Orthogonal to Position Vector on Sphere Surface
- jessawells
- · Replies 2 ·
Troubleshooting: Finding the Equilibrium Position of a Charged Block on a Spring
- jnifong
- · Replies 2 ·
Equilibrium of Two Masses Connected by a Spring: Find Velocity and Distance
- DDS
- · Replies 21 ·
Series Diff EQ problem: (3 - x^2) y'' - (3x) y' - y = 0
- VinnyCee
- · Replies 3 ·
Calculating Rearview Mirror + Amusement Park Mirror Images
- chase222
- · Replies 2 ·
How Does Changing Phase Affect Water Wave Interference Patterns?
- ckjacky
- · Replies 2 ·
Trouble Finding Charge Ratio for 3 Charged Particles in Line
- salthom
- · Replies 13 ·
And here i come again friction
- afromanam
- · Replies 8 ·
What number of passengers will maximize revenue?
- punjabi_monster
- · Replies 4 ·
DiffEQ 2nd order series sol'n problem: (1 - x)y'' + y = 0, x0 = 0
- VinnyCee
- · Replies 3 ·
Rate of image separation from a convex lens with moving object
- navisangha
- · Replies 2 ·
Why Are Some 3 p-Electron States Excluded by the Pauli Principle?
- Kalimaa23
- · Replies 1 ·