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 Potential Difference and COE
- physgrl
- · Replies 17 ·
Is there a magnitude of momentum quantum operator?
- epsilonjon
- · Replies 13 ·
Calculating Resistance in Series and Parallel Lamp Combinations
- Ali_94
- · Replies 1 ·
What will speed of sound for sourse and observer if both are moving wrt air?
- vkash
- · Replies 8 ·
What Is The Sum of Foures On Two Equally Charged Pith Balls
- besaw212
- · Replies 9 ·
Find the Power to move a car on an incline
- BSElectrician
- · Replies 2 ·
2D Kinematics - Projectile Motion
- sirh3nry
- · Replies 1 ·
Electric Force of Two Charges on Third Charge
- physgrl
- · Replies 5 ·
Find the period of a particle with only max vel. and amplitude
- here to help
- · Replies 5 ·
Why does Moon cause larger tides than Sun?
- renacat
- · Replies 6 ·
Understanding Sound Cavity for Greenhands
- genxium
- · Replies 5 ·
Why do events with lightlike separation cancel out when finding their frame?
- khfrekek92
- · Replies 10 ·
Pressure in a manometer - Absolute pressure
- JJBladester
- · Replies 4 ·
Calculating a and b in excel (any excel masters)?
- PCSL
- · Replies 4 ·
Kinetic energy with compton effect
- StephenD420
- · Replies 13 ·
Total energy of a geosynchronous satellite with mass 1500 kg
- JamesW
- · Replies 4 ·
Why is magnetic flux B times area, not B divided by area?
- kapitan90
- · Replies 2 ·
Ive to work out the uncertainties for youngs modulus.would i take
- jokiemay
- · Replies 1 ·
Force required to accomplish acceleration
- MMCS
- · Replies 5 ·
Force and pressure done by molecules
- songoku
- · Replies 10 ·
Crate on a frictionless ramp, constant speed.
- Koscher
- · Replies 11 ·
What is the molecular mass of the unknown gas in the atmosphere?
- annalise17
- · Replies 2 ·
Kinetic energy of a recoiled electron when backscattered
- StephenD420
- · Replies 10 ·
Electric Potential due to a charged conductor
- maiad
- · Replies 1 ·
Calculating the number of particles colliding with an area per unit time
- JDStupi
- · Replies 2 ·
Charged Sphere with off-center cavity Electric field
- EnderTheGreat
- · Replies 1 ·
Collision. A moving object hits a stationary object and moves at an angle
- Serendipitydo
- · Replies 8 ·
Average torque of a rotational freefall
- Docx
- · Replies 2 ·
Tough distance formula. (Answer provided), but how to get the answer?
- LearninDaMath
- · Replies 11 ·
Linear Air Resistance with a proof
- aaj92
- · Replies 5 ·
Resistance and Temperature in conductors and semiconductors
- logearav
- · Replies 1 ·
Spring System in Harmonic Motion. How do I find
- TrolliOlli
- · Replies 3 ·
Special relativity and Density?
- vorcil
- · Replies 10 ·
Relativity: Time Dilation and Length Contraction
- SeannyBoi71
- · Replies 1 ·
[extremely easy question] the sign (+v or -ve) of potential energy
- kougou
- · Replies 4 ·
Final velocity of two equal point charges repelling each other
- tcbarr
- · Replies 2 ·
Electron moves from .93c to .99c in some amount of time, how far does it travel?
- IntegrateMe
- · Replies 16 ·
Nonuniform Semicircle of Charge
- GenDis
- · Replies 2 ·
Deriving position from angular velocity on a rotating sphere.
- meiji1
- · Replies 1 ·
Underdamped Oscillator Solution: Deriving x(0) and v(0)
- yakkayakka
- · Replies 1 ·
Why is the H-field inside a magnet reversed?
- Harrisonized
- · Replies 1 ·
So what is the limit of [cot(x)]^2 as x approaches infinity?
- Avi1995
- · Replies 1 ·
Find New Frequency When Length AND Diameter Is Decreased?
- justinh8
- · Replies 1 ·
Closing a Circuit: Which Switches Turn On Light?
- physicsguy101
- · Replies 2 ·
Waves and sounds, finding the speed of a jet using the speed of sound
- atriancarlos
- · Replies 2 ·
How to Calculate Decibel Levels at Different Distances from a Sound Source?
- ninaw21
- · Replies 8 ·
Acceleration and Velocity Direction
- HonestMed
- · Replies 6 ·
Linear acceleration of a rod fixed to a hinge at one end
- mozartkart
- · Replies 4 ·
Distance a Block Moves up a Ramp
- Physics202
- · Replies 11 ·
Conceptual problem on capacitors
- tsw99
- · Replies 6 ·
Converting between Wavelength and Frequency in Resonators
- Niles
- · Replies 2 ·
Baseball struck by bat: impulse and net force with 2D velocity
- HarleyM
- · Replies 4 ·
How Do You Calculate the Electric Field at a Point Above a Charged Square?
- clanish
- · Replies 1 ·
Calorimetry: Thermal energy going into translational KE
- lolcat
- · Replies 2 ·
Energy needed to reach planets orbit and leave to leave it.
- Jacobsen
- · Replies 6 ·
What is the Acceleration of a Mass on an Incline Plane?
- Koscher
- · Replies 4 ·
Average speed of helium molecules at room temperature
- gabloammar
- · Replies 5 ·
Stresses and change in length in a compound bar
- paste
- · Replies 7 ·
Using Graph to determine constants in equation
- yardy_genius
- · Replies 2 ·
What is the electric force acting on the charge at the origin?
- gotpink74
- · Replies 1 ·
Vibration table acceleration with springs at 900 rpm
- johnnyd99
- · Replies 4 ·
Net electric force on a charge on the y-axis from two opposite charges on the x-axis
- Mikeez
- · Replies 1 ·
Need to calculate acceleration from total distance travelled.
- monac
- · Replies 23 ·
Unit Vector polar in terms of cartesian
- aaj92
- · Replies 3 ·
Introductory Relativity, Time Dilation
- SeannyBoi71
- · Replies 11 ·
Determine the velocity at which the bullet-block system hits the ground.
- tawko
- · Replies 1 ·
Understanding Free Modes in Simple Harmonic Oscillators
- physicsjock
- · Replies 1 ·
Electric field at point B in a square of four alternating charges
- hudsonale10
- · Replies 2 ·
Calculate Acceleration Given V0 and X
- LiiArch
- · Replies 5 ·
Where is the net force zero between two point charges?
- Sean1218
- · Replies 1 ·
Coulomb's Law and Electric Fields for a Triangle of Charges
- gotpink74
- · Replies 23 ·
Electric force between charges of +2.8 µC and -4.8 µC separated by 4.5 cm
- gotpink74
- · Replies 7 ·
2011 F = ma Contest Question # 25
- clesling
- · Replies 2 ·
Why Do All Elements of a String Move Left in a Moving Reference Frame?
- Herricane
- · Replies 3 ·
Particle motion on potential energy curve with kinks
- Caps1394
- · Replies 4 ·
Difference between position vector and displacement vector
- LearninDaMath
- · Replies 3 ·
Charging and discharging capacitor
- delapcsoncruz
- · Replies 1 ·
Find the net amount of charged contained in a cube
- mr_coffee
- · Replies 4 ·
Dot Product confusion (no calculations involved)
- LearninDaMath
- · Replies 3 ·
What Determines the Detachment Point of a Ball Rolling on a Circle?
- Plutonium88
- · Replies 11 ·
How Do You Calculate the Net Charge of a Substance?
- gotpink74
- · Replies 1 ·
Calculating Electric Force with Coulomb's Law: Glass and Rubber Ball Example
- gotpink74
- · Replies 1 ·
Subtracting this vector - as opposed to adding it
- rpgnick85
- · Replies 5 ·
Center of Mass coordinates Question
- AJDangles
- · Replies 1 ·
Deflection angle of a comet traveling around the Sun
- Leb
- · Replies 8 ·
How Can I Create a Buoyancy Lab for Extra Credit?
- Goopy17
- · Replies 2 ·
Finding Specific Heat of oil with an electric heating coil
- Moose100
- · Replies 24 ·
Simple Harmonic Motion + Regular Kinematics
- fnaarfnaar
- · Replies 1 ·
Finding charge so that the electric field is zero
- trip727
- · Replies 1 ·
System of particles passing over a pulley
- drawar
- · Replies 1 ·
Sciene fair project, freefall stuff - need one equation for time
- Gumbosplat
- · Replies 15 ·
Energy Conservation Design Lab Idea
- anismohe
- · Replies 1 ·
What's the Difference Between Mass and Amount of Matter?
- JJBladester
- · Replies 4 ·
Fluid Mechanics of a metal cube
- Cromptu
- · Replies 7 ·
Work done by air in piston with temperature change
- falsealarm715
- · Replies 4 ·
Find the charge distribution pattern.
- Aesteus
- · Replies 1 ·
Acceleration when only distance is given for a single second
- Izal
- · Replies 6 ·
Finding temperature change with specific heat capacity
- FFX
- · Replies 6 ·
Calculating Tension on Suspended Rod in Fluid
- Rapier
- · Replies 6 ·
E-field inside a non-conducting hollow pear.
- Aesteus
- · Replies 1 ·