Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Ratio of Intensities of 2 sounds
- Irishdoug
- · Replies 5 ·
Focal length of converging thin lens graphs
- jribs
- · Replies 1 ·
How Do You Calculate Forces and Balance a Hanging Cafe Sign?
- issacnewton
- · Replies 18 ·
A toy car is set rolling on a straight track
- Alexanddros81
- · Replies 3 ·
The average force needed to throw a baseball 90mph?
- Phillipv2004
- · Replies 5 ·
How to find the energy of an object that was at rest?
- Davidllerenav
- · Replies 49 ·
Force and Impulse on a Railway Locomotion
- ozni
- · Replies 20 ·
Understanding Energy Loss in Projectile Motion on a Ramp
- EddieV
- · Replies 7 ·
Derive thermal expansion of area from length
- tuki
- · Replies 1 ·
How to find initial velocity with only an angle and distance?
- Tracy Reynoso
- · Replies 2 ·
What are the dimensions of angular acceleration divided by radius?
- nerdeagle24
- · Replies 24 ·
Improving Tesla coil spark gap to power full light bulb
- Alex Karatzky
- · Replies 1 ·
Solar cell EMF and internal resistance from two load measurements
- Amadeo
- · Replies 6 ·
Efficiency of a Heat Engine: How to Calculate Heat Transfer in a Monotonic Gas
- Taylor_1989
- · Replies 3 ·
Average force and angle, collision problem
- AncientOne99
- · Replies 23 ·
Calculating Displacement of X and Y with Water-Filled Container
- bbd001
- · Replies 7 ·
Express torque as a function of angular velocity
- Catalyst971
- · Replies 4 ·
Solving Particle Motion in a Rigid Box: t=0
- Svyatoslav
- · Replies 2 ·
When can using a logarithm make solving an equation easier?
- bolzano95
- · Replies 2 ·
Solving 2 Blocks on a Slope: Find fmax Needed
- shashlik
- · Replies 3 ·
What is the radiation weight factor?
- gungo
- · Replies 1 ·
Gravitational Potential: How to know where the max GP is located?
- tiffany chan
- · Replies 14 ·
Electric Potential across charging battery.
- Amadeo
- · Replies 5 ·
Shm , calculation of amplitude of spring mass system
- Shivang kohlii
- · Replies 3 ·
Wave equation, wavelenght not given
- AncientOne99
- · Replies 6 ·
Solving for Thickness of Lead to Reduce Count Rate to 50
- gungo
- · Replies 3 ·
Equation of shm for different positions
- Shivang kohlii
- · Replies 1 ·
Why must the x and y axis be perpendicular?
- Phillipv2004
- · Replies 2 ·
Curvilinear Dynamics and forces
- Sian R
- · Replies 9 ·
Why does the cart accelerate when F=0 and there's no friction?
- EEristavi
- · Replies 3 ·
Finding the change in velocity from an acceleration vs time graph
- MattDutra123
- · Replies 1 ·
Spring compressed by mass, finding maximum height after release
- Jonah765
- · Replies 4 ·
How to calculate angular speed?
- Romain Nzebele
- · Replies 7 ·
Error propagation in aircraft vector problem from scale drawing
- Claric1
- · Replies 15 ·
Initial velocity of accelerating bird with northward acceleration
- Christopher Nguyen
- · Replies 14 ·
Circular motion of a rotational spring
- Ariano AnnaG
- · Replies 12 ·
Calculating the Length of a Water Column in a Beaker
- patric44
- · Replies 4 ·
Find the wavelengths Kα, Kβ , Lα and Lβ from elemental Cu
- AlphaLibrae
- · Replies 3 ·
What percent of the sky can an astronomer see at one time?
- charlie05
- · Replies 5 ·
Thermodynamics of an Insulated Box: Water-Steam Question
- Master1022
- · Replies 1 ·
Fluid Mechanics, Particle Size, Bouyouncy Force
- Aqib409
- · Replies 16 ·
Maximum height for water from a fire hose
- tuki
- · Replies 4 ·
Cylinderical reigon and potential difference
- fight_club_alum
- · Replies 1 ·
How much sea water is needed to keep a submarine still at 30 meters depth?
- tuki
- · Replies 7 ·
Calculate elevator acceleration using mass
- aleah
- · Replies 9 ·
Expression for effective potential energy
- Thorscira
- · Replies 7 ·
Projectile Motion Experimental Error
- ELLE_AW
- · Replies 1 ·
Determining position of an object after inelastic collision
- Synchron
- · Replies 1 ·
What are other names for bending stress?
- John1661
- · Replies 3 ·
Volume charge density and potential difference in sphere
- fight_club_alum
- · Replies 6 ·
Dynamics: Relative Acceleration
- Master1022
- · Replies 2 ·
Regression for a first order system
- Smitha921
- · Replies 1 ·
Uniform charge density and electric potential
- fight_club_alum
- · Replies 4 ·
Finding image charge for a grounded conducting sphere
- Kaguro
- · Replies 11 ·
How do you solve for time if a, v, and s are given
- Newonsite
- · Replies 3 ·
Uniform distribution of charge and work needed
- fight_club_alum
- · Replies 12 ·
Potential difference to achieve speed
- fight_club_alum
- · Replies 4 ·
Finding an expression for acceleration
- Mitza
- · Replies 1 ·
Finding the angle of an inclined plane
- Mitza
- · Replies 2 ·
Minimizing downstream drift while swimming across a river
- EEristavi
- · Replies 4 ·
Finding the expected value of position in a Potential Well
- ja07019
- · Replies 31 ·
Find the center of mass of a plate
- Davidllerenav
- · Replies 57 ·
Radioactivity Question, Is this method correct?
- Irishdoug
- · Replies 5 ·
Speed of two charged particles repelling each other
- fight_club_alum
- · Replies 7 ·
The maximum intensity for light transmitted through a thin film
- FranzDiCoccio
- · Replies 2 ·
What is the power input of a motor pulling up an elevator?
- magnesium12
- · Replies 3 ·
Is hot gas more massive than cold gas?
- rugerts
- · Replies 10 ·
Calculating the charge of two concentric conductive spheres
- Miles123K
- · Replies 3 ·
How far does the block slide? (work, spring, incline)
- magnesium12
- · Replies 4 ·
Electric Potential slowing a charged particle to a stop
- fight_club_alum
- · Replies 4 ·
Electron trajectory through 2.4 cm magnetic field in cathode-ray tube
- solzonmars
- · Replies 2 ·
How Do You Calculate Heat Transfer in a Thermodynamics Piston Problem?
- babaliaris
- · Replies 5 ·
Finding reaction forces at hinges A and E for a beam with a couple
- Kile
- · Replies 15 ·
How Does a Dielectric Influence Charge Induction on a Conducting Shell?
- Karl86
- · Replies 1 ·
Finding Ctr of Mass of object w/ given uniform mass density
- jigsaw21
- · Replies 8 ·
Finding the period of the satellite's orbital motion
- rwssman
- · Replies 1 ·
What is the weight that will balance the object Q?
- Kile
- · Replies 1 ·
How to find the center of mass of a cube?
- Davidllerenav
- · Replies 6 ·
3rd harmonic of a column of air with one end enclosed
- Miles123K
- · Replies 1 ·
Projectile Motion with Pulley System
- EddieV
- · Replies 3 ·
Mechanics Problem from MEXT scholarship 2007
- rwssman
- · Replies 7 ·
Block projected up an incline: how did the book get 2.5 m/s?
- CVRIV
- · Replies 2 ·
Maximum displacement in mass spring system
- Fitz Watson
- · Replies 5 ·
Blood flow velocity via Doppler effect
- FranzDiCoccio
- · Replies 1 ·
Oscillation Problem -- Ball mass on the end of a horizontal spring
- osten
- · Replies 3 ·
Thermodynamics: Insulated Box Partition Question
- Master1022
- · Replies 3 ·
MATLAB_Quantum Well_Finite Difference Method
- csc
- · Replies 3 ·
Heat exchanger - efficiency of the cycle
- EastWindBreaks
- · Replies 3 ·
Potential/Kinetic Energy of Particles in Harmonic Oscillator
- messier992
- · Replies 2 ·
Calculate number of turns for an electric heater
- MisterP
- · Replies 3 ·
Finding recoil velocity of an object during a collision
- jigsaw21
- · Replies 9 ·
Calculate the maximum voltage that can be applied
- xxwwyytt
- · Replies 5 ·
Calculate the energy in a capacitor's electric field
- MisterP
- · Replies 1 ·
Heat transfer problem for cooling a solar panel
- davidhe96
- · Replies 9 ·
Finding mass of steam that heats ice and water to 60°C
- Julieh
- · Replies 12 ·
Calculate the amount of heat supplied to a gas
- MisterP
- · Replies 13 ·
Need to calculate the friction coefficient
- MisterP
- · Replies 20 ·
Writing the harmonic oscillation equation from energy, force, period and phase
- MisterP
- · Replies 6 ·
Explain friction in a pulley system
- KatrineRav
- · Replies 13 ·
Work done lifting and sliding a box with friction
- MisterP
- · Replies 4 ·