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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Induction and alternating current
- Snazer
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Why Does a Penny Appear to Float When Dropped on a Roller Coaster Descent?
- voutetesbelle
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Find typical energy of nuclei in solar core
- ck99
- · Replies 1 ·
Mass Spring Oscillator question
- LocalStudent
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How Do You Calculate Forces and Accelerations in a Two Block and Pulley System?
- Metamorphose
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How do you know if the rest mass changes or not?
- sspitz
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Finding the Kinetic Energy and the Speed of an Alpha particle
- boguslava
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Consider the circuit shown in the figure below, where C1 = 4.00 µF, C2
- tracyellen
- · Replies 13 ·
Mathematical Description of a Wave
- pumike11
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Motion of a particle given position vector.
- tcanman
- · Replies 6 ·
Calculating Angle of Swing for Fuzzy Dice on a Hill
- mhz
- · Replies 26 ·
Calculating total resistance of a combination circuit with a diagonal resistor?
- WetFork
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Two particles and magnetic field
- kimberlyann9
- · Replies 4 ·
Compact disk angular acceleration
- jkhays
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Zero Electric Field on the x-Axis Due to Opposing Charges at Different Positions
- kimberlyann9
- · Replies 1 ·
Projectile Motion: Dropping a Package
- Metamorphose
- · Replies 6 ·
A Man In a Speed Boat Top Speed 15m/s
- TAMU
- · Replies 1 ·
Solving Diffraction Grating Homework Problem
- ZxcvbnM2000
- · Replies 1 ·
Finding the initial height of a roller-coaster [HELP]
- Scooter I
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Two Buses: How Long to Catch Up?
- Jimbo57
- · Replies 1 ·
Acura/Bentley: FINAL EXAM REVIEW
- Metamorphose
- · Replies 7 ·
Normalizing a Wavefunction for the Cyclopentadienyl Radical
- baldywaldy
- · Replies 1 ·
Ranking Electric Potential Energies: A=C>B=D
- tracyellen
- · Replies 8 ·
Center of mass for rigid body and point particle
- Noorac
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How Does a Police Car Catch Up to a Speeding Vehicle?
- Metamorphose
- · Replies 8 ·
Quality Factor of Oscillator, Can someone Look at My Work Please
- mmmboh
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Simple Atomic Mass Unit question
- ZedCar
- · Replies 6 ·
What is the Angular Speed of an Automobile Engine?
- netone
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E field outside a current carrying wire
- conquerer7
- · Replies 5 ·
Full Wave Rectifier: Get Answers to Your Questions
- cupid.callin
- · Replies 2 ·
What is the Internal Resistance of a Cell?
- huey910
- · Replies 1 ·
Batteries in Parallel and series
- Talz1994
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Finding rate of relativistic work, special relativity.
- T-chef
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How Can Bernoulli's Principle Explain a Hovering Ping Pong Ball?
- Tugberk
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Momentum & Kinetic Energy MC *quick*
- mhz
- · Replies 19 ·
Velocity of an electron in an electric field
- zeralda21
- · Replies 5 ·
Two Masses in Pulley System (Rotational Dynamics)
- S-Flo
- · Replies 12 ·
Simple Harmonic Motion and Resonance
- Gyoung68
- · Replies 1 ·
Momentum collision in two dimensions
- menco
- · Replies 6 ·
Combining Series and Parallel Resistor Combinations
- hermish
- · Replies 3 ·
Hydrostatics and Cylindrical Tank
- Shoelace Thm.
- · Replies 8 ·
Why Does I Appear in the Voltage Equation for Parallel Circuits?
- sparkle123
- · Replies 3 ·
Understanding Newton's Cradle: Explaining the Movement of Middle Balls
- jsmith613
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What Happens to a Charge in a Uniform Electric Field?
- domyy
- · Replies 13 ·
Understanding the Equation E=mc^2 and Its Applications
- jsmith613
- · Replies 4 ·
Circular motion- how slowly would you twirl the ball in vertical circle
- dani123
- · Replies 1 ·
Find the individual charge (and potential difference?) on each capacitor
- Color_of_Cyan
- · Replies 3 ·
Circular motion- radius of the plane's vertical loop
- dani123
- · Replies 1 ·
Calculating Rotations for a Space Station
- dani123
- · Replies 1 ·
How Does a Hydro-Pneumatic Shock Absorber Respond to Impact in Thermodynamics?
- DarkBlitz
- · Replies 1 ·
Initial current in a voltage driven LCR circuit
- newjack202
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What was the initial polarization direction of the incident light?
- xQuin
- · Replies 3 ·
Electric field outside conductor if charge placed inside it
- jd12345
- · Replies 5 ·
Calculating Force on a Man from Variable Mass Water Jet
- itay2424
- · Replies 4 ·
Problem with calculating magnetic flux for a single coil of wire.
- Zatman
- · Replies 8 ·
Why does my friend say I am wrong?
- davedave
- · Replies 2 ·
What is the correct formula for finding tension in a pendulum bob on a string?
- chxmilan
- · Replies 5 ·
Deriving constant acceleration formula
- Femme_physics
- · Replies 10 ·
Vertical SHM and Change in Mass
- alexfloo
- · Replies 5 ·
How Does Throwing a Sack Affect Scale Readings?
- Opteron
- · Replies 3 ·
Electron orbital frequency of hydrogen atom if given orbit radius
- Mugen112
- · Replies 6 ·
Finding Object Distance for Upright Image with Magnification +1.51 for Concave Mirror
- longcatislong
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What is the electric field inside a metallic sphere with point charges nearby?
- Saitama
- · Replies 2 ·
How Does Trailer Weight Impact the Work Done by a Car?
- influx
- · Replies 4 ·
Relative velocity of river flow question
- Scooter I
- · Replies 10 ·
How Does Distance Affect Sound Intensity Levels?
- getty102
- · Replies 1 ·
Confused About Acceleration Vector Direction on Test
- november1992
- · Replies 2 ·
Are These Equations for Moment of Inertia Correct?
- fisselt
- · Replies 1 ·
Proving Inverse Hyperbolic Function
- jamie-soc
- · Replies 2 ·
Optics Terms: Definitions & Help
- physiczboi
- · Replies 1 ·
Derive optimal anlge for maximum range (Projectile Motion)
- MohammadG
- · Replies 1 ·
Charge Distribution on Spherical Conductors
- jehan60188
- · Replies 1 ·
RLC Circuit - Voltage Across Resistor
- DrummingAtom
- · Replies 6 ·
Change in Kinetic Energy in a Inelastic collision
- DNSalehi
- · Replies 1 ·
How is the Entropy of Blackbody Radiation Calculated?
- roam
- · Replies 4 ·
Stuck on a single loop circuit, two emfs and resistor
- scrilla103
- · Replies 4 ·
Velocity as a function of distance [v(x)]
- BitterX
- · Replies 3 ·
What Speed Does the Roller Coaster Need to Maintain at the Top of a 14m Loop?
- yashi5166
- · Replies 3 ·
Calculating Escape Velocity of a Planetary Body
- btpolk
- · Replies 3 ·
Comparing Horizontal Forces on Stacked Blocks with Friction
- crcrowell17
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What Photon Energies Are Emitted When a Hypothetical Atom Absorbs 7-10 eV?
- ACraig21
- · Replies 4 ·
What will happen if a elevator containing a spring attached to it fall freely
- vkash
- · Replies 4 ·
Relativity: can two observers see two events in reverse?
- Aziza
- · Replies 8 ·
Tension in a ropa to form transverse waves
- MissEuropa
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Understanding Nucleus Decay: Nitrogen-14 to Carbon-11 Transformation Explained
- Nairmb
- · Replies 9 ·
Block moving around in a semi cricle
- arrax
- · Replies 3 ·
Simple Harmonic Motion-oscillation on an ideal spring
- MissEuropa
- · Replies 3 ·
Isolating acceleration in distance equation
- carinaeeta
- · Replies 2 ·
Magnetic Field square wire loop
- faen
- · Replies 1 ·
Proof: maximum range of an object launched off a cliff
- pantheid
- · Replies 1 ·
On (pentagon shaped) electric field question.
- physikamateur
- · Replies 2 ·
Right Hand Rule Applied to Loops in Magnetic Fields
- yvesers
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How Does Plaque Constriction Affect Blood Velocity in Arteries?
- semitope
- · Replies 3 ·
How Do You Calculate Impedance for Series and Parallel RLC Circuits?
- physicsphy
- · Replies 1 ·
How Fast Does Blood Travel Through an Arteriole?
- eagles12
- · Replies 3 ·
Is there a way to figure the velocity required to move uphill
- Probie1
- · Replies 2 ·
How Does Efficiency Loss Affect Voltage and Current in a Transformer?
- michaelplease
- · Replies 1 ·
How Does Heat Transfer Between Two Reservoirs Affect Universal Entropy?
- gboff21
- · Replies 4 ·
Simple Question: potential difference between two points on circuit
- mtu620
- · Replies 6 ·