Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
What is the Pressure of Falling Sand on a Sticky Surface?
- dmark312
- · Replies 2 ·
Electric Potential Difference Question (Parallel plates, higher potential)
- the7joker7
- · Replies 1 ·
Nonconservative vs conservative force
- -EquinoX-
- · Replies 3 ·
Kinetic friction on incline/flat surface system
- XxBollWeevilx
- · Replies 5 ·
Physics Discussion Question On My Roller Coaster Lab (Energy-Related)?
- wiffellballki
- · Replies 1 ·
How Do You Calculate the Magnitude of Charges Based on Their Potential Energy?
- bkl4life
- · Replies 7 ·
Friction and Acceleration: Solving for the Motion of a Moving Sculpture
- Blueice781
- · Replies 2 ·
Finding electric field magnitude, electron acceleration, and zero field point
- devilz_krypt
- · Replies 1 ·
Period of a pendulum making 30 oscillations in 75 seconds
- maggiequigs
- · Replies 1 ·
Free Falling Objects: Find Time for Mailbag to Reach Ground
- pberardi
- · Replies 7 ·
How Many Neon Molecules Have Velocities Between 100 and 200 m/s?
- marmot
- · Replies 1 ·
How Does a Car's Oscillation Amplitude Change on a Washboard Road?
- Mindscrape
- · Replies 1 ·
How can I use nodal analysis to solve for V in this circuit?
- ptlffrty
- · Replies 6 ·
Answer: Potential Difference Va-Vb for 4.3 nC Particle in 225 N/C Field
- phy112
- · Replies 3 ·
What is the potential difference Vad-Vac?
- dwstrait
- · Replies 2 ·
Electric Field: not quite getting the correct answer
- Seraph404
- · Replies 1 ·
Finding magnitude and direction of equilibrant.
- Obama
- · Replies 1 ·
Loop the Loop (circular motion)
- Trentonx
- · Replies 3 ·
Multiple choice questions about SHM
- phys1618
- · Replies 4 ·
Lightning strike: electric field, capacitance and power
- bkl4life
- · Replies 1 ·
Inner and Outer Radius of a Sphere
- jumbogala
- · Replies 3 ·
Rock tossed straight up-Velocity question
- xgoddess210
- · Replies 4 ·
Photoelectric effect compared to the particle theory
- *intheclouds*
- · Replies 1 ·
How Do You Calculate Voltage Drops in a Simple Circuit?
- dasblack
- · Replies 6 ·
Magnetic and Electric Fields - Theory
- starless.aeon
- · Replies 1 ·
Circular motion (magnitude of radial acceleration)
- mohdhm
- · Replies 7 ·
Finding hawk shadow speed using sine rule
- camboguy
- · Replies 1 ·
Gauss: Conducting Spherical Shell w/ Point Charge
- calvert11
- · Replies 1 ·
Energy stored in parallel-plate capacitor with changing plate separation
- gunitsoldier9
- · Replies 6 ·
Two resistors and total resistance
- bkl4life
- · Replies 6 ·
How Is Object Distance Calculated for Image Reduction with a Diverging Lens?
- DMOC
- · Replies 3 ·
Gauss's Law- Flux through surface
- chipperh
- · Replies 4 ·
Proving EM Waves Equations: E = Emsin(kx-ωt) and B = Bmsin(kx-ωt)
- noppawit
- · Replies 5 ·
Calculating Flux for Hemispheres of Different Radii
- Seraph404
- · Replies 3 ·
Fluid question (includes bears)
- yayitsrobby
- · Replies 13 ·
How Does Gauss's Law Apply to Multiple Charged Sheets?
- Seraph404
- · Replies 1 ·
Mass sliding down an inclined plane (True/False)
- FAJISTE
- · Replies 2 ·
Why Do Large Sparks Jump from Leather Belts in Machinery?
- bkl4life
- · Replies 4 ·
Twin traveling to 4.2 light-year star ages 5.2 years less
- Nitric
- · Replies 4 ·
How do you find the direction and magnitude from a nucleus?
- itsmarasilly
- · Replies 1 ·
Elastic potential energy problem needs to be checked
- phys1618
- · Replies 5 ·
Work/Energy vs. Force Questions
- adhishyajnik
- · Replies 2 ·
Hockey puck rebound acceleration with 26 m/s and 21 m/s
- mattstjean
- · Replies 4 ·
How Do You Draw a Free Body Diagram for a Box and Truck in Motion?
- plshelpme
- · Replies 1 ·
Temperature variation of resistance
- dasblack
- · Replies 2 ·
In a certain region of space, the electric field E is uniform.
- xxaznitex
- · Replies 5 ·
Electric field from two charges at (0.506, 0.506)
- xswtxoj
- · Replies 14 ·
Just need Simple Harmonic Motion problem checked
- phys1618
- · Replies 11 ·
Request Assistance with Gauss's Law- Surface charge of sphere
- chipperh
- · Replies 3 ·
How to Determine Amplitude and Maximum Speed in Spring Motion?
- Vengeance
- · Replies 7 ·
Collision Physics: Solving for Angle Between Initial Velocities
- sameapple
- · Replies 21 ·
Power dissipated in the inductor
- noppawit
- · Replies 3 ·
Why Does Electric Potential Vary Inside and On the Surface of a Charged Sphere?
- erinec
- · Replies 1 ·
Circular motion and static friction of earth
- brownie24
- · Replies 1 ·
Net electric field from two parallel line charges
- Seraph404
- · Replies 1 ·
What is the acceleration of a crate with two applied forces and friction?
- gharada
- · Replies 2 ·
Question why is there a negative sign
- camboguy
- · Replies 1 ·
Identifying parent and daughter nuclides in Ga-64 and Zn-64 decay
- erinec
- · Replies 4 ·
Throwing Rocks: Analyzing Horizontal & Vertical Motion
- liz777
- · Replies 2 ·
What is the Relationship Between Force and Equilibrium in a Tug-of-War?
- zell_D
- · Replies 2 ·
What is the work required to arrange charged objects in a right triangle?
- phy112
- · Replies 4 ·
Pushing at a downward angle with friction
- casedogg
- · Replies 4 ·
How do you estimate the mass of a nucleus?
- erinec
- · Replies 1 ·
Distance between two electrons where electrostatic force cancels gravity
- xswtxoj
- · Replies 11 ·
How Is Initial Power Calculated in a Plutonium-238 Powered Pacemaker?
- erinec
- · Replies 1 ·
What is the speed and direction of the wind in this vector problem?
- jemerlia
- · Replies 9 ·
Electric Force/ Electrical Fields
- xswtxoj
- · Replies 14 ·
Momentum Problem involving projectile.
- fjyuirt
- · Replies 1 ·
How Do You Calculate Forces and Velocities in Physics Problems?
- chops369
- · Replies 1 ·
What is the magnitude of the force of repulsion between them?
- xswtxoj
- · Replies 8 ·
How Do You Determine the Direction of a Moment in Statics?
- th3plan
- · Replies 1 ·
What is the Resultant Force of Multiple Vectors Acting on a Point?
- roxxyroxx
- · Replies 2 ·
Calculating Next 3 Harmonics of a Standing Wave
- Nano
- · Replies 3 ·
Determine the magnitude of the normal force exerted by the table
- cacaluch
- · Replies 5 ·
Find Vector Components: A (17, 27°), B (26, 75°)
- susyq232
- · Replies 1 ·
Minimum refractive index for total internal reflection in a prism
- crystalplane
- · Replies 1 ·
How Does Wave Speed Vary Along a Hanging Rope?
- phil ess
- · Replies 1 ·
Calculating Flux in Three Spherical Shells with Varying Charge Distributions
- Obama_US
- · Replies 3 ·
Boat wavelength oscillation problem
- phys1618
- · Replies 4 ·
Understanding Self-Induction: Calculating Current Growth Rate
- sagda_m2
- · Replies 1 ·
Why can't I divide both sides by cos in simple harmonic motion?
- connor415
- · Replies 6 ·
IR illuminator power from beam angle and area
- mchi5cf2
- · Replies 1 ·
Calculating Wavelength of Surface Waves on a Lake
- phys1618
- · Replies 4 ·
Minimum speed for ball to make rod do full rotation
- vladimir69
- · Replies 14 ·
Heat energy of a monatomic gas
- TFM
- · Replies 12 ·
HW: What is energy used? What is wattage?
- JerseyGirl
- · Replies 2 ·
Work on a proton in uniform magnetic field
- Elbobo
- · Replies 7 ·
Kinematics rock thrown up in air
- ankit arya
- · Replies 2 ·
Calculating Charge on 10cm Diameter Sphere: 3700V
- FuzzyDunlop
- · Replies 3 ·
How Hot Does a Flashlight Bulb Get When Turned On?
- wayneinsane
- · Replies 3 ·
Magnitude of Force on Q1 with Three Point Charges
- las90
- · Replies 3 ·
Finding specific heat of metal in three-object calorimetry problem
- discordplus
- · Replies 1 ·
What is the ratio of t to r in a set of equations involving p, q, r, s, and t?
- bluepillow
- · Replies 4 ·
Airplane position and velocity from two radar stations
- hkapoor
- · Replies 3 ·
What is the formula for determining wavelength in different mediums?
- proskier
- · Replies 2 ·
Adding a wave to a sine wave to create a cosine wave
- shintashi
- · Replies 2 ·
Finding Angular Velocity: Two Sphere Problem
- ritwik06
- · Replies 6 ·
Does a car's weight increase if its speed increases?
- wajed
- · Replies 3 ·
A very long uniform line of charge has a charge per unit length of 4.82 uC/m
- xxaznitex
- · Replies 1 ·
What is the maximum acceleration in m/s^2 the cart can undergo
- TG3
- · Replies 7 ·