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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Compression force on a cylinder from rope tension
- long758
- · Replies 11 ·
Picking a Tent: Prism-Shaped Choice of 2.4m or 250cm
- Faxali
- · Replies 3 ·
Question is about the acceleration
- gijungkim
- · Replies 4 ·
A thin circular ring of radius R has charge Q/2
- hitemup
- · Replies 4 ·
Calculating net torque on a plate
- tdashrom
- · Replies 4 ·
Three point charges with a central fourth charge
- kostoglotov
- · Replies 2 ·
Curiosity Question 2: Stopping a mass on a spring
- long758
- · Replies 2 ·
How Does Adiabatic Expansion Lead to Condensation?
- albega
- · Replies 9 ·
What is the resultant force exerted by the sides of the glass on the water?
- lavankohsa
- · Replies 6 ·
Uncertainty For Multiple Measurements
- Login
- · Replies 4 ·
Lenses Question -- image is to be the same size as the object
- Reptic
- · Replies 14 ·
Coefficient of restitution of a particle
- erisedk
- · Replies 5 ·
Can Lorentz Transformations in Opposite Directions Cancel Each Other Out?
- john morrison
- · Replies 1 ·
Is Work Positive or Negative on a Stretched Spring with a Mass?
- GBA13
- · Replies 2 ·
How to Use Conservation of Energy to Solve a Loop-the-Loop Problem?
- Goofball Randy
- · Replies 10 ·
Finding refractive index using total internal reflection
- RaulTheUCSCSlug
- · Replies 5 ·
Distance and time of an Angry bird
- SGE
- · Replies 1 ·
Range of a cannon using trigonometry?
- Futurestar33
- · Replies 1 ·
What is the method for finding peak time from a given diagram?
- princejan7
- · Replies 1 ·
Electric flux through a cube and forces on triangle charges
- (?)
- · Replies 1 ·
Finding the Center of Mass of a Meter Stick with Multiple Masses
- sallychan
- · Replies 1 ·
Why is there a change in momentum during elastic collisions?
- sallychan
- · Replies 3 ·
Induced emf of Sliding Wire Down Rails
- Blitzmeister
- · Replies 1 ·
Proportionality of frictional force
- Dennydont
- · Replies 10 ·
Center of mass vs center of support of equilibrium
- MaiteB
- · Replies 1 ·
The smallest angle flashlight beam can make with horizontal
- armxneo
- · Replies 5 ·
Review centre of gravity calculation
- PrincessIceFall
- · Replies 33 ·
Calculating Reaction Forces on an Angled Column
- Karol
- · Replies 1 ·
Does mass affect acceleration on a slope?
- goonking
- · Replies 10 ·
Convex mirror find object distance
- xamy
- · Replies 3 ·
How Do Pulley Tensions Affect Performance?
- Jonny1993
- · Replies 2 ·
Period of Motion for Masses on Rod w/ Spring Constant 5.4 Nm.rad-1
- Dennydont
- · Replies 15 ·
Finding the distance between parallel lines using Snell's law
- Shaun97
- · Replies 3 ·
Apparent Depth of Light Bulb above Water and Mirror
- Santino Torres
- · Replies 1 ·
Force on an electron due to a dipole?
- physicslove22
- · Replies 14 ·
How Do You Calculate Acceleration in a Two Mass, Two Pulley System?
- PFuser1232
- · Replies 6 ·
Finding slope at each point from voltage vs position data in Excel
- MaryCate22
- · Replies 1 ·
Angular speed of raven striking a pivoted square gate
- henry3369
- · Replies 9 ·
Particle motion on spiral r=Aθ: finding velocity, acceleration, and valid angle ranges
- PFuser1232
- · Replies 15 ·
How to calculate audio power level?
- Alexandra7
- · Replies 2 ·
Work done by varying force pushing a hanging 230 kg crate sideways
- brycenrg
- · Replies 4 ·
Change in internal Energy During Expansion of an Ideal Gas
- Purple Baron
- · Replies 6 ·
What is the period of a compound pendulum?
- Dennydont
- · Replies 31 ·
Calculating Velocity of a Cannonball at a Given Height
- cptstubing
- · Replies 4 ·
Forces with Tension and pulleys
- Ghost4512
- · Replies 6 ·
Expressing the equation of hydrostatic equilibrium
- Jdraper
- · Replies 17 ·
Thermodynamics - engines question
- Jaydude
- · Replies 11 ·
Finding Spring Constant for Rotational Motion Problem
- Adel A
- · Replies 1 ·
Egg drop project from 3 meters with toothpicks and glue
- Britmer
- · Replies 1 ·
Angular velocity and acceleration of rotating rod with angular acceleration 1.5e^t
- DrVirz
- · Replies 7 ·
Solving Detached Train Cart Problem: Find Distance
- Totally
- · Replies 8 ·
Electrostatics Basics -- 2 plastic balls hanging on threads attract each other
- Soniteflash
- · Replies 3 ·
Why does the Coriolis effect cause air parcels to curve back?
- GayathriShankar
- · Replies 10 ·
Phase Difference with Initial Conditions for SHM
- Sam Fielder
- · Replies 6 ·
Why isn't mechanical energy equal at comet 67P's aphelion and perihelion?
- paintingstars
- · Replies 3 ·
Finding wavelength from counting crest
- aryan
- · Replies 1 ·
Finding displacement with acc and vel
- jebii
- · Replies 1 ·
Unbanked Curve increasing speed
- Jake Wright
- · Replies 1 ·
How Does Bulk Modulus Affect Water Compression in a Tank?
- MatStrat
- · Replies 4 ·
Beat frequency and velocity of observer
- RainMD
- · Replies 13 ·
What is the force at the joint C on the right beam?
- Karol
- · Replies 3 ·
Can a Circle Travel at the Speed of Light?
- Geranimo
- · Replies 3 ·
Acceleration of two masses on pulley.
- ladymiresa
- · Replies 1 ·
Finding Kα and Kβ X-ray energies for Z = 74
- nmsurobert
- · Replies 6 ·
Which describes the 1D gravitational force in this figure?
- Westin
- · Replies 1 ·
Time Constant, Maximum Charge, and Current in an RC Circuit
- vysero
- · Replies 11 ·
Determing the Potential Difference Ratio
- Shinwasha
- · Replies 7 ·
Normal-Tangential Coordinate for Ball Moving in Circle
- bio667
- · Replies 4 ·
Why angular momentum and energy give different comet speeds
- henry3369
- · Replies 4 ·
Solve Rotational Collision Homework: 100 RPM to 50 RPM
- Soniteflash
- · Replies 5 ·
Least squares method for cloud of atom
- diracdelta
- · Replies 7 ·
Minimal angle of deviation through the prism
- diracdelta
- · Replies 7 ·
Mechanical energy of frictionless pulley
- Deadnotsleeping
- · Replies 1 ·
Electric field in a spherical capacitor.
- Felpudio
- · Replies 1 ·
Divergine Lens Embedded within Converging Lens
- Ryan Rodriguez
- · Replies 1 ·
Tensions in Hanging Beam with Given Weights
- Karol
- · Replies 10 ·
What is the required weight for a wind load of 0.42kN/m² on a mounted post?
- Darryl Meek
- · Replies 11 ·
Length of a Steel Wire (Standing Waves)
- smashd
- · Replies 1 ·
What is the mass of this vertical rope? (Mechanical Waves)
- smashd
- · Replies 10 ·
Projectile motion, finding initial speed
- vizakenjack
- · Replies 5 ·
Force between Parallel Wires: Calculating Resultant Force
- rohanlol7
- · Replies 1 ·
Projectile motion finding distance
- Coffeelover
- · Replies 5 ·
Relationship between electric potential and electric field
- Flotensia
- · Replies 5 ·
Using the equation intensity = power/cross-sectional area
- John421
- · Replies 4 ·
Calculating Force and Momentum: A Catcher's Challenge
- HelpMePLz
- · Replies 4 ·
Charged particles in electric and magnetic fields
- Dhooy7
- · Replies 3 ·
Critical angle for a box to start moving on an incline
- Ethan_Tab
- · Replies 14 ·
Stored energy among a capacitor arrangement
- Destroxia
- · Replies 4 ·
Calculating the displacement using the work-energy principle
- brycenrg
- · Replies 2 ·
Light through three polarizers with axes at 45° and 25°
- lozah
- · Replies 3 ·
Torque, Angular Momentum, and Conservation of Mass Problems
- TimeInquirer
- · Replies 5 ·
Proving the Runge-Lenz vector is zero for circular orbits
- samjohnny
- · Replies 3 ·
Problems of E-field of a Continuous Charge Distribution
- mysci
- · Replies 5 ·
Cyclotron electron speed exceeds light speed
- baileya
- · Replies 1 ·
Why must a star have less than 3 solar masses for life to develop?
- Guarana
- · Replies 11 ·
What is the Strength of the Electric Field?
- littlejon
- · Replies 5 ·
Car wheel angular acceleration and rotation while braking
- stipan_relix
- · Replies 2 ·
What is the magnetic field due to a ribbon of current-carrying wires?
- samjohnny
- · Replies 3 ·
What is the direction of friction on a plate on two rotating wheels?
- lavankohsa
- · Replies 2 ·
Conservation of energy of a skier
- brycenrg
- · Replies 2 ·