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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What Quantum Numbers Change When a Hydrogen Atom Transitions from 5d to 4f?
- gollum
- · Replies 1 ·
Calculating Molecule Speed Ratios in a Gas Mixture
- L²Cc
- · Replies 4 ·
A tape,pulley,disk and undisclosed mass.
- MathematicalPhysicist
- · Replies 5 ·
Potential difference and a proton
- cuppy
- · Replies 4 ·
Where Does the Electric Potential Equal Zero Along the X-axis?
- cuppy
- · Replies 1 ·
How Much Force Keeps a Car on Track in Circular Motion?
- paperclip
- · Replies 12 ·
How does internal reflection affect thin film emissive display performance?
- s7k22
- · Replies 4 ·
Understanding Stationary Waves in Open and Closed Tubes
- t_n_p
- · Replies 2 ·
Pitch Speed Revalive to Bat Speed
- CardsFan
- · Replies 2 ·
Graph Needed to Find e and Io: lnI vs. V?
- inv
- · Replies 3 ·
Block and wedge. Analysis of the center of mass
- clicwar
- · Replies 1 ·
Math error in electromagnetic wave problem solution?
- WolfOfTheSteps
- · Replies 3 ·
Can I Build a Simple Optical Device with Just Two Magnifying Glasses?
- AznBoi
- · Replies 3 ·
Distance from Flash: Soldier 20°C, 6 secs After Cannon Fire
- demode
- · Replies 3 ·
A Playground Slide and Some Friction
- ccgrad05x2
- · Replies 3 ·
Simple Tension ProblemCan you confirm that I am doing it Right?
- MJC8719
- · Replies 3 ·
How do you prove it for a general point inside the earth?
- Ahmed Abdullah
- · Replies 9 ·
Force required to tip over a granite slab by pushing at the top
- wildside50
- · Replies 1 ·
Issue finding out what meson this is.
- 6Stang7
- · Replies 2 ·
What is the velocity of light in glass based on refraction angles?
- The_Lobster
- · Replies 3 ·
What affects the swing of a pendulum w/ and w/o air resistance
- The_Lobster
- · Replies 1 ·
Plank overturning when two boys walk in opposite directions
- a150daysflood
- · Replies 7 ·
Simple cycloid time calculation problem
- maverick280857
- · Replies 1 ·
How can magnetic flux density be a number of field lines per unit area?
- danago
- · Replies 3 ·
E-field due to a large circular plane of uniform distribution
- iontail
- · Replies 2 ·
Vibrating beam - physical interpretation
- Unco
- · Replies 1 ·
How Does Banking Angle Affect Centripetal Force on a Curve?
- lzh
- · Replies 6 ·
Drag force equation, projectile
- Mag|cK
- · Replies 2 ·
How do I combine Fc=mv²/r and Fg=qvB?
- music_lover12
- · Replies 12 ·
Air resistance and Air density?
- Tomm42
- · Replies 6 ·
How Does Physics Explain the Functioning of a Trebuchet?
- Marghk
- · Replies 1 ·
Electric Potential of two conductors
- jesuslovesu
- · Replies 4 ·
Solve 100J Torque Problem with a 30cm Wrench and Force Vector
- munther
- · Replies 1 ·
I have to build a simple electromagnetic motor
- MullyDaCl0wn
- · Replies 1 ·
What is the magnitude and direction of the electric field
- schern42
- · Replies 6 ·
Why do different thicknesses in a thin film cause different colors?
- Hyacinth42
- · Replies 5 ·
Density Change Caused by Temp. Change
- e(ho0n3
- · Replies 3 ·
Power and energy of a 3.0-V flashlight bulb with 1.5-A current
- tdk
- · Replies 2 ·
Moment of Inertia in 3D Rotations
- yetar
- · Replies 7 ·
Electric field of an electric dipole
- Emanuel84
- · Replies 2 ·
Is the gas monatomic or diatomic?
- imy786
- · Replies 3 ·
The Impact of External Factors on Projectile Range
- perfectz
- · Replies 12 ·
Difference of Cinematique and Dynamique
- mix
- · Replies 1 ·
Resultant Force on Q1 from Three Point Charges
- stumped23
- · Replies 3 ·
Writing nodal and mesh analysis matrix equations by inspection
- RadiationX
- · Replies 5 ·
Induced EMF in a falling steel beam
- Boozehound
- · Replies 9 ·
When Will You Hear a Stone Dropped in a 240m Deep Mine Shaft?
- linhy
- · Replies 4 ·
Finding loop current in a Kirchhoff's law circuit with two batteries
- fffff
- · Replies 15 ·
Solve Music Instrument Homework: Velocity & String Tension
- linhy
- · Replies 5 ·
Force and acceleration with 6kg object, wagon pull angle, helicopter lift
- mix
- · Replies 16 ·
How Do You Calculate the Initial Velocity of a Bullet in an Elastic Collision?
- spectravoid
- · Replies 1 ·
Identifying Physics Errors in a Star Trek Episode
- linhy
- · Replies 5 ·
R"Find Power Dissipated by 8A Toaster Connected to 120V Source
- tdk
- · Replies 7 ·
How Can Ballistic Glider Designs Achieve a 1:2 Height-to-Distance Ratio?
- !Live_4Ever!
- · Replies 6 ·
What does macroscopic variable mean in scientific measurements?
- imy786
- · Replies 6 ·
What is the pressure of CO2 at the nozzle exit of a rocket?
- Spiewgels
- · Replies 2 ·
How Does Adiabatic Compression Affect Entropy and Temperature in Nitrogen Gas?
- imy786
- · Replies 5 ·
Radial acceleration of a turntable
- Office_Shredder
- · Replies 2 ·
Researching Torque, Current and Flux Density
- monkeyhead
- · Replies 1 ·
Resistance of aluminum pipe filled with copper
- gamesandmore
- · Replies 5 ·
Why does the work equation use weight instead of applied force?
- aleksxxx
- · Replies 5 ·
Find the magnitude of small oscillations
- prabhat rao
- · Replies 5 ·
How Does Classical Statistical Mechanics Perform in Explaining Gas Properties?
- imy786
- · Replies 3 ·
Question: How do I prove the current division law for two resistors in parallel?
- RadiationX
- · Replies 6 ·
Equation of state for an ideal gas
- imy786
- · Replies 6 ·
Calculating Buoyancy and Tension in a 2-Sphere System in an Ocean
- aff67611
- · Replies 3 ·
Solving for Horizontal Distance and Angle of Release in Dive Bomber Problem
- MJC8719
- · Replies 4 ·
Charges on the vertex of a triangle
- Rasine
- · Replies 3 ·
Solving Kirchhoff's laws for a circuit with three loops
- fffff
- · Replies 3 ·
Speed and coefficeint of friction part 2
- imy786
- · Replies 11 ·
What Causes the Tides on Earth?
- husky88
- · Replies 2 ·
What Does Lag Mean in Wave Interference?
- fffff
- · Replies 1 ·
How Is Percentage Difference Calculated and Utilized in Data Analysis?
- Rph105
- · Replies 1 ·
Find acceleration based on final velocity and distance
- antiliberal12
- · Replies 1 ·
How Do Scale Calculations Affect RC Car Physics?
- DKTKD
- · Replies 1 ·
Force exerted on keys revolving in a circle at 3 revolutions per second
- skajdhfkjsdfh
- · Replies 1 ·
Electric field and ball of charge
- Rasine
- · Replies 10 ·
FAQ:What's the differences between Radiometric Units and Photometric Units?
- s7k22
- · Replies 2 ·
How Can the Windscreen Angle Prevent Rain from Entering the Cart?
- f(x)
- · Replies 1 ·
Optics - Refracting light on film oil
- iontail
- · Replies 5 ·
Is it possible - Stefan Boltzman Law
- SciencePF
- · Replies 2 ·
Torque Confusion: Understanding rxF and m_i*g*(x_i, y_i, z_i)
- yetar
- · Replies 3 ·
Heat capacity at constant volume explanation
- imy786
- · Replies 3 ·
How Do Electric Fields Differ Between Aluminum and Glass Plates?
- jesuslovesu
- · Replies 1 ·
Dr/Dt world coordinates problem
- yetar
- · Replies 1 ·
Lorentz force law and capacitor problem
- music_lover12
- · Replies 19 ·
Determine the voltage across the 9.00-µF capacitor
- gamesandmore
- · Replies 3 ·
Problem finding tangential acceleration
- Roq
- · Replies 1 ·
Compute the position of the sandbag
- cuttie2nv143
- · Replies 3 ·
What is the initial speed of the egg?
- cuttie2nv143
- · Replies 6 ·
Does the equation dr/dr = w(t)xr(t) hold true for a changing axis vector?
- yetar
- · Replies 3 ·
Moment of inertia of disc with putty dropped on it
- imy786
- · Replies 58 ·
Just a few questions relating to graphs
- ianb
- · Replies 1 ·
Understanding Power and Acceleration: Why Object Acceleration is Not Constant
- fffff
- · Replies 4 ·
If forces balance and acceleration is zero, how is the electron stationary?
- fffff
- · Replies 2 ·
Build a Pool-Walking Device with These Requirements
- theycallmesal
- · Replies 4 ·
Calculate the period of the Pirate ship if it were a pendulum
- Prim3
- · Replies 2 ·
Adiabatic Compression: Understanding Internal Energy and Work in Gases
- grscott_2000
- · Replies 2 ·
Block and bullet collision: find speed, kinetic energy, and maximum height
- Willtd
- · Replies 7 ·