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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Electric flux through a plane described by an equation
- turquoisetea
- · Replies 2 ·
Charge inside a spherical shell
- Tanya Sharma
- · Replies 26 ·
Kinetic Energy of a sphere due to uniform line of charge
- zabumafu
- · Replies 8 ·
Why do electronic devices need constant DC voltage instead of AC?
- Dongorgon
- · Replies 3 ·
Charge outside and inside a hollow ball
- Nikitin
- · Replies 13 ·
Thermal physics final temperature of mixture
- AbsoluteZer0
- · Replies 6 ·
Concentration and diffusion of oxygen in the Earth's atmosphere
- Yuriick
- · Replies 1 ·
Simple harmonic motion on an incline
- PhizKid
- · Replies 1 ·
What is the principle of moments?
- JoHickie
- · Replies 1 ·
Horizontal spring with friction
- Ali 2
- · Replies 5 ·
Longest sound wave in a 4m room and its frequency
- cytochrome
- · Replies 7 ·
Potential of Infinite Sheets of Charge and Conducting Slab
- Gee Wiz
- · Replies 17 ·
Calculate the flux through a cube of size 1.0 m
- junglebobo
- · Replies 3 ·
Calculating Angular and Linear Speed and period of revolution
- FaraDazed
- · Replies 6 ·
How Do You Calculate Projectile Velocity at Different Times?
- mgerman63016
- · Replies 16 ·
Clay falling onto a pan attached to a vertical spring
- ultimateman
- · Replies 4 ·
Calculating Charges of Identical Tiny Conducting Spheres
- fresheze13
- · Replies 1 ·
Flux through far away disc and potential Q.
- CAF123
- · Replies 15 ·
Why does integrating charge density over the region give zero when the field is nonzero?
- fishingspree2
- · Replies 1 ·
Need a Double Check / Verification
- Inferior Mind
- · Replies 2 ·
Struggling with finding the mass req'd when velocity is doubled
- Harrison01
- · Replies 8 ·
Understanding Free Body Diagrams for Cantilevered Structures
- pyroknife
- · Replies 17 ·
Find equivalent resistance in this circuit
- Hyperfluxe
- · Replies 4 ·
Work, Net work, Work done by friction
- dcasplen
- · Replies 18 ·
Cart on frictionless track pulled by hanging weight
- Habibrobert
- · Replies 4 ·
Infinite number of turns in finite time
- paras02
- · Replies 8 ·
When does car 2 catch up to car 1 on a velocity-time graph?
- Nirupt
- · Replies 17 ·
Projectile fired horizontally from 55 m height
- _physics_noob_
- · Replies 7 ·
Beta decay of deuterium and triterium
- pbonnie
- · Replies 4 ·
Finding the angle between two magnitudes.
- Daweih
- · Replies 3 ·
Electric Field Between Two Infinite Sheets of Charge
- BRuss9807
- · Replies 2 ·
String tension between two masses on inclined planes
- Inferior Mind
- · Replies 3 ·
The number of kg needed to pull apart Magdeburg Hemispheres
- ShelbyMcD
- · Replies 12 ·
Find magnitude of acceleration on a Ca ion, given electric field.
- monnapomona
- · Replies 8 ·
Finding the final velocity of a proton
- becky_marie11
- · Replies 3 ·
Difficult optimal cable cost analysis
- algar32
- · Replies 69 ·
Why does my professor's node voltage have opposite sign from the textbook?
- cpatel23
- · Replies 1 ·
Chemical potential in Thermodynamics to find latent heat of vaporization
- musicure
- · Replies 7 ·
Find how far the spring will be stretched
- ShelbyMcD
- · Replies 2 ·
Centripetal acceleration of a vehicle on banked circular arc
- Zatman
- · Replies 2 ·
Calculating Energy Needed for Change of Phase: Do I Need One More 'mCΔT'?
- AbsoluteZer0
- · Replies 2 ·
Determing unknown weight of an hanging object in a systen
- GoGoGadget
- · Replies 3 ·
Each Car has Speed Corresponding to Max Normal Acceleration. Find Time Elasped
- Northbysouth
- · Replies 1 ·
Electric Field Problem-Balancing Forces
- tyreal
- · Replies 6 ·
Thermodynamic Properties; Isentropic Expansion
- FlyingSpartan
- · Replies 2 ·
Isothermal exapansion, work done
- Saxby
- · Replies 3 ·
Calculating Capacitor Charge and Energy: A Quick Guide
- CharlieBewn
- · Replies 2 ·
What Speed Does a Spacecraft Need to Escape the Solar System from Earth's Orbit?
- Bashyboy
- · Replies 30 ·
What is the horizontal distance between a tilted conveyer belt and a pipe?
- burton95
- · Replies 7 ·
Truck in circular motion at 70 m/s: high centripetal acceleration and force
- FaraDazed
- · Replies 3 ·
Calculating Friction Force on a Rotating Disk
- 5Mystery
- · Replies 1 ·
Equivalent Capacitance of Complex Circuit
- megaspazz
- · Replies 5 ·
Designing an Effective Egg Catcher: Materials and Strategies
- Zanmar
- · Replies 2 ·
Electric potential of tiny spheres question
- lodovico
- · Replies 1 ·
Voltage output for ideal diode (solutions wrong?)
- pyroknife
- · Replies 5 ·
Vertical hydrostatic force acting upwards on a curved surface?
- theBEAST
- · Replies 1 ·
Finding Velocity and Acceleration for a Moving Particle
- tcc88
- · Replies 2 ·
How is the electric field formula for a charged rod derived?
- Bashyboy
- · Replies 11 ·
Force exerted by a 1 kg nut on a 45° screw thread
- IsaacFigNewton
- · Replies 27 ·
How Does Tension Vary in a Multi-Block Pulley System?
- wcase
- · Replies 4 ·
Understanding Electric Flux and Field Lines in a Uniform Electric Field
- aaronfue
- · Replies 1 ·
Compute Ratio for Luminosity to Mass: Compare to Sun
- oldspice1212
- · Replies 2 ·
Finding potential between identical spheres
- flip290
- · Replies 13 ·
Resultant Vectors and Equilibriant Vectors
- ME_student
- · Replies 5 ·
Do sound waves get bigger when they bounce off a wall?
- JazzyJones
- · Replies 5 ·
Thermal Stress Problem- not sure how to attack this one
- RoKr93
- · Replies 1 ·
Are my answers about waves and light correct?
- chipM
- · Replies 12 ·
Determining the possible time interval between two sine waves
- randoreds
- · Replies 6 ·
Why acceleration is not 9.8m/s^2?
- cmkc109
- · Replies 1 ·
Finding loss of sun's mass given the energy density delivered.
- texan14
- · Replies 1 ·
Carnot Engine ~ Electric Generating station
- Coti1002
- · Replies 4 ·
Write Vector Expression in n-t and x-y coordinates of Acceleration
- Northbysouth
- · Replies 3 ·
Quantam Mechanic - Particle in a rigid one-d box (PDF)
- MPKU
- · Replies 1 ·
How do you derive the correct projectile motion formula?
- gmy5011
- · Replies 3 ·
Why does air pressure decrease with altitude?
- salma17
- · Replies 2 ·
Determine the Velocity and Magnitude of Acceleration on the Wheel
- Northbysouth
- · Replies 4 ·
Change in thermal energy and Temperature problem
- laser123
- · Replies 1 ·
Volume of Silo bin with Cone top
- zeshkani1985
- · Replies 1 ·
Finding The Effect of Several Electrics Fields
- Bashyboy
- · Replies 9 ·
Why is momentum conserved in collisions but not for a rolling ball with friction?
- ShizukaSm
- · Replies 6 ·
Where Do Electric Fields Cancel Out Between Two Charged Particles?
- Bashyboy
- · Replies 3 ·
Finding when two particles fired at different times reach the same height
- Taylor_1989
- · Replies 1 ·
Equation for displacement in damped harmonic motion.
- Craptola
- · Replies 1 ·
Projectile Motion Angle Problem
- TRobison
- · Replies 2 ·
How are magnets able to attract each other?
- sgstudent
- · Replies 4 ·
Comparison of T, E and V in different states?
- theBEAST
- · Replies 3 ·
Velocity of satellite at specific altitude
- Biosyn
- · Replies 22 ·
Electric field - Finding the charges
- rm_girl
- · Replies 1 ·
Max velocity for simple pendulum oscillation
- PhizKid
- · Replies 5 ·
What types of energies can be generated from fire
- costa_1205
- · Replies 1 ·
Do electrons in a neutral metal rod experience net force from a charged rod?
- sgstudent
- · Replies 18 ·
Electric potential problem with two plates and different points (i'll elaborate)
- nadeem0322
- · Replies 1 ·
Rocket travels into space, emits sound - intensity/time question
- fuzzy361
- · Replies 2 ·
Downward acceleration in an elevator
- racecar12
- · Replies 9 ·
Distance and speed word problem. Introduction to vectors.
- Nirupt
- · Replies 9 ·
Equation for speed of charges (electrostatics)?
- devil0150
- · Replies 3 ·
Δt=6.7 s, Δx= .25 miles what is speed?
- burton95
- · Replies 6 ·
How Do Charges Affect Electrostatic Force?
- Bashyboy
- · Replies 5 ·
Space Dependence of Electric potential
- PhysicsRob
- · Replies 7 ·
Difference between fluorescent strip and compact fluorescent lamp
- moimoi24
- · Replies 11 ·