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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Separating a brass ring from an aluminum rod by cooling
- skwerl
- · Replies 2 ·
How Does Atomic Theory Explain the Increase in Resistance with Temperature?
- Embermage
- · Replies 2 ·
Calculating Tension in Pulley System w/ Friction
- AngelofMusic
- · Replies 4 ·
Finding the Derivative of a Function with Arctan
- ACLerok
- · Replies 27 ·
How Does the Mean Value Theorem Apply When a Function's Derivative Is Zero?
- ACLerok
- · Replies 7 ·
Comparing spectra from a lightbulb and hydrogen gas with a spectroscope
- Macdaddy
- · Replies 2 ·
Is My Wave Superposition Calculation Correct?
- moham_87
- · Replies 2 ·
Ideal Gas Law and Balloon Volume
- Virmeretrix
- · Replies 17 ·
Helicopter lift force with upward acceleration
- viola_85
- · Replies 9 ·
Change of Phase, Absolute Zero?
- holly
- · Replies 12 ·
Power dissipated in heater at reduced voltage and RC circuit charge decay
- cseet
- · Replies 2 ·
Calculating Work for Pumping Water from a Hemispherical Tank
- drklrdbill
- · Replies 2 ·
Magnetic field from displacement current in charging capacitor
- PhysMajor34
- · Replies 2 ·
What actually causes a motorcycle to do a wheelie?
- Soilwork
- · Replies 13 ·
Calculating enthalpy change for NaOH and HCl neutralization
- stargazer
- · Replies 3 ·
Coal burned per hour to power 260 million electric clocks
- phystudent
- · Replies 2 ·
How Do You Calculate the Spring Constant and Natural Length of a Spring?
- StudentNeedsHlp
- · Replies 2 ·
Solving for Mica Thickness in Double Slit Interference Arrangement
- Callisto
- · Replies 3 ·
What is D in the Moment of Inertia Formula?
- SsUeSbIaEs
- · Replies 2 ·
Voltage Drop in Circuits with Parallel Components
- physman
- · Replies 4 ·
Why Does the Expectation Value of Momentum Vanish in a Quantum Bound State?
- einai
- · Replies 2 ·
Circuits with Kirchhoff's rules
- SparkimusPrime
- · Replies 11 ·
Friction on an incline 2 problems
- Polak
- · Replies 3 ·
Satellite orbital radius Question
- angelical_kitten
- · Replies 9 ·
Magnetic force from a 12 A straight wire at 0.11 m distance
- frank
- · Replies 5 ·
Why Do I Get Different Values for I2 in My Circuit Calculation?
- cytokinesis
- · Replies 4 ·
So the sheet of paper should be placed 24 cm from the mirror.
- mustang
- · Replies 2 ·
Dispersion - Chromatic Abberation
- apples and pears
- · Replies 2 ·
Inelastic collision between two cars with skid marks
- UniGal
- · Replies 2 ·
Rotational Dynamics and torque, easy problem
- new324
- · Replies 2 ·
Hydrogen and oxygen at same temperature: which has more speed or kinetic energy?
- holly
- · Replies 11 ·
Calculating g on an Unfamiliar Planet Using a Simple Pendulum
- lollypop
- · Replies 11 ·
Rotational Kinematics and Energy Problem.
- new324
- · Replies 6 ·
Finding power rating, charge magnitude, and capacitor voltage
- moonlit
- · Replies 6 ·
Finding net magnetic field by subtracting two fields
- Spectre32
- · Replies 4 ·
Conservation of angular momentum (hard)
- cristina
- · Replies 5 ·
How Do You Calculate the Angular Acceleration and Torque of a Merry-Go-Round?
- cristina
- · Replies 10 ·
How much energy is needed to melt a 50kg snowman at -2 degrees Celsius?
- Simple_Simon
- · Replies 2 ·
How Does Friction Affect the Motion of Blocks and a Pulley System?
- cristina
- · Replies 6 ·
Cylinder rotated by string with hand accelerating upward
- cristina
- · Replies 4 ·
Where does kinetic energy go when clay balls collide inelastically
- psruler
- · Replies 4 ·
How Is the Equation of Constraint Derived for a Disk Rolling Inside a Parabola?
- mindcircus
- · Replies 2 ·
Box sliding down incline compressing spring with friction
- soon2bsmart
- · Replies 5 ·
Linear Algebra - Dimension, Basis
- discoverer02
- · Replies 3 ·
Rotor ride radius with coefficient of friction 0.0580
- delta_mu
- · Replies 4 ·
Does a rod stretched under its own weight change diameter uniformly?
- Dr.Brain
- · Replies 25 ·
What is final velocity?
- poloplaya2008
- · Replies 4 ·
Finding x and y acceleration components for charge in electric field
- Rockdog
- · Replies 4 ·
Kinetic energy and where it rotates
- ShawnD
- · Replies 5 ·
Factorizing x^6 + x^4 + x^2 + 1 using roots of x^8 - 1 = 0
- expscv
- · Replies 5 ·
Finding the Height of a Two-Dimensional Completely Inelastic Collision
- PhysicsPhun
- · Replies 4 ·
Does a shadow of circular motion form simple harmonic motion?
- divyaushadam
- · Replies 3 ·
Solving Entropy and Energy Transfer in a Rigid Tank with Argon Gas
- bdiddy
- · Replies 3 ·
Finding θ when x=0 in converting 8i to polar form
- MikeH
- · Replies 2 ·
Why Are Improper Integrals Undefined?
- tandoorichicken
- · Replies 2 ·
What is the force constant of the spring in this physics lab experiment?
- lollypop
- · Replies 6 ·
Calculating Rotations and Linear Acceleration in a Flywheel System
- PhysicsPhun
- · Replies 14 ·
Find intersection of sin(x) and 2x/π, solve inequality
- expscv
- · Replies 11 ·
True or False: Car Collision Kinetic Energy and Rest
- PhysicsPhun
- · Replies 5 ·
How Does a Roller Coaster Affect Scale Readings?
- Saad
- · Replies 4 ·
How far back up will the guy recoil?
- ussjt
- · Replies 4 ·
Forces and Motion Challenging Qs
- Saad
- · Replies 2 ·
Calculate Time Difference for Two Rays of Light in an Optical Fiber
- raging_hippo
- · Replies 2 ·
Three forces in equilibrium, friction, and tow-bar force
- lotusbloom
- · Replies 2 ·
Maximum amplitude of oscillation of a block
- Mac13
- · Replies 2 ·
How Is Friction Calculated for a Scrambler Car That Stops After 10 Meters?
- pineapple629
- · Replies 3 ·
Finding x and y components of net electrostatic force on particle in three-charge system
- Rockdog
- · Replies 3 ·
Creating an Ohmmeter: Solving a HW Problem Using Kirchov's Laws
- jnol6056
- · Replies 4 ·
Solving for ln(-e), (-1)^i, and (2i)^1+i in Rectangular Form
- ilikephysics
- · Replies 2 ·
How Does a Small Change in Voltage Affect the Power of a Heater?
- cseet
- · Replies 2 ·
Crane problem (reaction forces)
- JamesL
- · Replies 3 ·
Calculating Induced EMF in a 5.56m Steel Beam Dropped from 3.97m
- Aerospace
- · Replies 3 ·
How Do You Calculate Satellite Orbits and Friction Factors in Physics?
- hyen84
- · Replies 6 ·
How Do You Calculate Change in Kinetic Energy for an Elastic Collision?
- psruler
- · Replies 5 ·
Is the Emf in a Coil of 100 Turns 0 When B Field Decreases from 1.0 T?
- tandoorichicken
- · Replies 2 ·
What is the current in the other parallel wire when one carries 100A?
- tandoorichicken
- · Replies 2 ·
Total internal reflection at glass-water interface
- phy
- · Replies 2 ·
How Does Increasing Track Incline Affect NASCAR Race Speeds?
- Saad
- · Replies 4 ·
Integrating tan(3x) using substitution method?
- tandoorichicken
- · Replies 2 ·
Could someone give me an idea for a proof of this
- stunner5000pt
- · Replies 5 ·
How can I simplify (n+3)!/(n+1)! using the property of factorials?
- Blade
- · Replies 2 ·
What is the difference between average and final velocity?
- poloplaya2008
- · Replies 2 ·
Calculating Average Binding Energy per Nucleon and Decay of Free Neutrons
- SteveoFitz
- · Replies 3 ·
Rotational motion of a car's tires
- ryanl
- · Replies 2 ·
Quantum Mechanics: Eigenvaules, and orthogonality
- Baggio
- · Replies 2 ·
Calculating Forces, Moments, and Angular Speed in a Rotational System
- Rebel_Yell
- · Replies 4 ·
Total tolerance when adding resistances in series
- UrbanXrisis
- · Replies 3 ·
How many four-digit numbers contain no repeating digits and are even?
- tofu
- · Replies 2 ·
Current from 2.2 Micro F Capacitor
- cseet
- · Replies 2 ·
Sarah Asks: How Does Adding Resistors in Parallel Affect Circuit Current?
- Skipperchrldr
- · Replies 2 ·
Voltage and charge redistribution for three connected conducting spheres
- belleamie
- · Replies 3 ·
Work Done on 50.0-kg Cylinder Up 3-m High, 6-m Ramp
- Format
- · Replies 4 ·
What do trigonometric substitutions mean and how do I use them?
- expscv
- · Replies 2 ·
Two Questions, one very complicated
- KingNothing
- · Replies 21 ·
Find the phase and group velocity of three plane waves
- frankR
- · Replies 1 ·
Dipole in electric field, capacitor
- burak_ilhan
- · Replies 2 ·
Converting rectangular to polar form: y=-5, x=10, and circles
- mathzeroh
- · Replies 11 ·
Series circuit and total resistance
- UrbanXrisis
- · Replies 7 ·
How do I find out the capacitor?
- cseet
- · Replies 12 ·