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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Internal half of the fresnel zone
- harrydj
- · Replies 1 ·
Max Rotation Rate of a Slowing Turntable
- Dan22
- · Replies 1 ·
Science fair - Formula for friction to thermal energy?
- AtomicNucleus
- · Replies 6 ·
Solve Distance Problem: Boy Riding Bicycle for 30km
- Equilibrium
- · Replies 3 ·
Capacitor and displacement current.
- altamashghazi
- · Replies 1 ·
Calculating Wavelength and Central Maximum Width Using Single Slit Equations
- alittlelost
- · Replies 27 ·
Projectile Motion from table of values.
- angisgon
- · Replies 12 ·
Potential difference in rod rotating in magnetic field
- kbar1
- · Replies 2 ·
Block sliding down a 45° incline
- FaraDazed
- · Replies 2 ·
Difference between Electric Potential energy and Potential energy
- SiriusAboutAstronomy
- · Replies 3 ·
What is the reaction force to F(net) in Newton's 3rd law?
- student34
- · Replies 21 ·
How Many People Can an Elevator Hold Without Breaking the Cable?
- Voltrical
- · Replies 6 ·
Kinetic energy and speed of system of charges (electric potential)
- jpdelavin
- · Replies 5 ·
Equilibrium under the action of concurrent forces
- jimmyly
- · Replies 2 ·
Why is the disk charge density negative in Gauss' Law hole problem?
- nchin
- · Replies 5 ·
Voltage difference, line integral
- kougou
- · Replies 1 ·
Find gravity on an unknown planet
- dragon18
- · Replies 1 ·
Finding Electric Field of Two Charges
- erok81
- · Replies 4 ·
Is f(x,t)=exp[-i(ax+bt)^2] a harmonic wave?
- reedc15
- · Replies 9 ·
Finding the Relationship Between Net Work and Change in Kinetic Energy
- Yosty22
- · Replies 1 ·
Find the current through the 100 Ohm resistor:
- Jormungandr
- · Replies 1 ·
What is the phase difference between two particles in stationary waves?
- question dude
- · Replies 7 ·
Circular Motion of a turntable spinning counterclockwise
- Dan22
- · Replies 17 ·
When will the sled attain this speed?
- Sneakatone
- · Replies 6 ·
Electric field from curved charged rod at center of arc
- nchin
- · Replies 1 ·
Superposition principle? How to algebraically add up two equations?
- nchin
- · Replies 1 ·
Earth's centripetal acceleration around the Sun
- hrice
- · Replies 1 ·
Calculate gravitational acceleration in a vacuum?
- rockchalk1312
- · Replies 2 ·
Finding forces on a car rounding a curve
- baird.lindsay
- · Replies 2 ·
Rough Inclined Plane - Find Coefficient of friction
- FaraDazed
- · Replies 3 ·
Find the mass of m1 on an inclined pulley system
- IcyDuck
- · Replies 5 ·
Understanding Elastic Collisions in Two Dimensions
- cp255
- · Replies 1 ·
Finding frictional force towing a car up a hill
- baird.lindsay
- · Replies 5 ·
Deriving Stefan's fourth-power law
- efekwulsemmay
- · Replies 1 ·
The Specific Heat of a Free-Electron gas calculated by using the Fermi
- nboogerz
- · Replies 2 ·
Air temperature and relative humidity
- salma17
- · Replies 2 ·
How does friction causes centripetal acceleration?
- SecretSnow
- · Replies 6 ·
Newtons 3rd law with a truck hitting a person
- Painguy
- · Replies 3 ·
Metal rod rotating in magnetic induction.
- amk_dbz
- · Replies 2 ·
Solving Ray Optics Problem 2: Mirror Positions and Image Formation
- thunderhadron
- · Replies 4 ·
Pre Lab, how to find uncertainty
- Habibrobert
- · Replies 4 ·
Two blocks attached by a string(dynamic)
- MikeMai
- · Replies 3 ·
Box on a table connected by cable(dynamic)
- MikeMai
- · Replies 1 ·
Mass on spring with equilibrium position y₀ executing SHM
- bmb2009
- · Replies 1 ·
Electrostatic Force of a Triangle
- dolpho
- · Replies 6 ·
Calculating the Potential Energy of Quarks in the Quark Model of the Neutron
- fizzickz
- · Replies 1 ·
Net Force on a Descending Man Question
- student34
- · Replies 2 ·
Calculate the force on a particle from magnetic field of infinite wire
- eviljay
- · Replies 5 ·
Combining two different sound intensities
- ebmather
- · Replies 5 ·
A 10kg block on a table conected to a 78kg mass (find acceleration)
- Zsmitty3
- · Replies 1 ·
Can someone check my answers to these four wave questions
- question dude
- · Replies 4 ·
Rope Sliding Over Friction less Peg
- bmb2009
- · Replies 1 ·
Relationship between Wave Velocity and Displacement in a String
- BareFootKing
- · Replies 8 ·
Derive equations for Electric Field/Electric Potential
- Renaldo
- · Replies 1 ·
Waves in air in a tube that is closed
- the-pal
- · Replies 7 ·
Force Applied to an Object with friction
- EnDev
- · Replies 12 ·
Magnitude and Direction of Electric Fields
- sarahaha44
- · Replies 1 ·
Finding acceleration and normal force for a box pulled at 30° angle
- EnDev
- · Replies 1 ·
Gauss law for semi-infinite sheet of charge
- fishingspree2
- · Replies 6 ·
Calculating Work Done by Non-Constant Force Using Integration
- kopinator
- · Replies 1 ·
1d free particle. How do I find the solution to the DE?
- richyw
- · Replies 6 ·
How Does Kinetic Friction Affect Skid Mark Length and Initial Car Speed?
- Robertoalva
- · Replies 4 ·
How to Avoid Common Mistakes in Solving Forces Problems?
- FaraDazed
- · Replies 3 ·
Help with collision, energy, and momentum problems for physics test
- thwolfe
- · Replies 3 ·
Calculate force in english units
- ENGR_student
- · Replies 5 ·
True or False What a graph of velocity vs time tells us about force
- idllotsaroms
- · Replies 4 ·
Simple electrostatic fields questions
- lovelyrwwr
- · Replies 3 ·
Person throws ball in elevator problem
- CAF123
- · Replies 37 ·
Find r'' and Theta''for the Spaceship
- Northbysouth
- · Replies 4 ·
Motorcycle on curved path and rotating rod with collar
- medynamics
- · Replies 3 ·
Diameter of a stream of water from a faucet
- sluo
- · Replies 15 ·
Constant Acceleration and Resolution of Forces
- FaraDazed
- · Replies 2 ·
What direction does light move in an ancient shrine?
- deltafee
- · Replies 6 ·
Calculating Total Moment of Force F1 about Point A
- United
- · Replies 4 ·
Why Does the Atwood Machine Calculation Yield the Same Tension on Both Sides?
- Jaimie
- · Replies 5 ·
How Fast Does a Block Slide Down a Ramp with Friction?
- vic05
- · Replies 3 ·
Projectile motion ball thrown down vertically
- xxascendantxx
- · Replies 5 ·
Particle confined to a potential under a force
- CAF123
- · Replies 17 ·
Electric Force and Field Strength Problem
- reinajonas
- · Replies 2 ·
Velocity/displacement/time problem
- xotash
- · Replies 1 ·
Molar volume of gas in function of temperature and pressure
- damabo
- · Replies 1 ·
Conservation of Energy and the Race between Different Shapes on an Inclined Ramp
- robertmatthew
- · Replies 2 ·
Charge for a Grain of Dust on the Moon?
- m00nbeam360
- · Replies 6 ·
Atwood's Machine, massive pulley and upwards force acting upon it.
- DavidDante
- · Replies 1 ·
Finding capacitance in a series RC circuit with 151 Ω resistor
- SereneKi
- · Replies 6 ·
How do you calculate the moment of a force about a point?
- United
- · Replies 1 ·
Three Point Charges, find the electric force exerted
- m00nbeam360
- · Replies 3 ·
Thermodynamics in a refridgerator
- Saxby
- · Replies 2 ·
Solving for gravitational pull
- jaff
- · Replies 3 ·
Electrical Generator and rotating coil
- SereneKi
- · Replies 8 ·
Force on a car passenger during acceleration.
- Zsmitty3
- · Replies 1 ·
Error propogation in trig functions
- richyw
- · Replies 10 ·
Conservation of Momentum question (find final velocities)
- d3nat
- · Replies 13 ·
Boundry conditions on a string with a hoop at one end
- BareFootKing
- · Replies 2 ·
Suppose the mass of the Earth were doubled (Physics 12)
- StaticWaffles
- · Replies 7 ·
Penetration depth of charged particle in electric field
- asdf12312
- · Replies 2 ·
Calculate electric field at position x given ρ and thickness d?
- asdf12312
- · Replies 9 ·
Concentric Cylindrical Conducting Shells
- maceng7
- · Replies 1 ·
Kinematics/Projectile Motion Question?
- Stanc
- · Replies 5 ·
Attempting to find tension force with electric fields
- mfgrape123
- · Replies 3 ·