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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Intensity at a point on the screen
- HelpPlease27
- · Replies 8 ·
Finding the magnitude of force P
- Touran Khan
- · Replies 6 ·
What is the speed of a wave on the string?
- Efast
- · Replies 2 ·
Work / Energy Elevator / Spring Problem
- tristanslater
- · Replies 5 ·
Difference in Radius of Charged Particles in Magnetic Field
- tristanslater
- · Replies 12 ·
What's the error in 1 repeated measurement?
- henry wang
- · Replies 4 ·
Using Work Energy Theorem to Find Necessary Velocity
- Thenotsophysicsguy
- · Replies 3 ·
Physics project topic ideas for 8-month experiment with apparatus
- Noah159
- · Replies 5 ·
Electric field inside and outside a sphere (Not Gauss)
- Waxterzz
- · Replies 4 ·
Maxwell-Boltzmann Energy distribution
- WrongMan
- · Replies 3 ·
Power dissipation in series resistors using a voltage-current graph
- Clara Chung
- · Replies 2 ·
Fluid Mechanics and Archimedes Principle
- a1234
- · Replies 18 ·
Loss of kinetic energy due to heat
- Cocoleia
- · Replies 25 ·
What is the speed of the centre of momentum frame in terms of c?
- abanana
- · Replies 4 ·
Signal strength of a wave packet
- Elvis 123456789
- · Replies 3 ·
RLC circuit with damped oscillation and decay time
- ayoubster
- · Replies 10 ·
Decide the resulting force (F) per meter on L2
- DecoratorFawn82
- · Replies 1 ·
Egg Drop Challenge: Designing a Way to Keep an Egg Intact
- mranderson556
- · Replies 2 ·
Finding coefficient of friction when object slides 10m to a stop
- kixtoby
- · Replies 19 ·
Final temperature mixing 12 oz soda with ice at -19.5°C
- NY152
- · Replies 5 ·
Minimum coefficient of static friction
- emily081715
- · Replies 10 ·
How do you "read" this formula?
- MyNameIsNicholas
- · Replies 2 ·
Why is the answer reflection and not total internal reflection?
- SunandaGoh
- · Replies 5 ·
Calculate the frequency of microwave
- patrykh18
- · Replies 1 ·
Magnetic energy of a conductor with a hole
- crick
- · Replies 1 ·
Capacitors in a circuit with switches
- horsedeg
- · Replies 5 ·
Coulomb's Law in Two Dimensions
- hsadiq98
- · Replies 4 ·
New Near Point with Corrective Lens?
- givemeknowledge
- · Replies 1 ·
Examples of Innovative Product that is Frugal
- Erish
- · Replies 2 ·
What is the minimum mass of the barbell without tipping?
- Luke0034
- · Replies 4 ·
Finding the acceleration in this force problem
- knewman55
- · Replies 3 ·
Showing that a wavefunction can be written as a product
- TheSodesa
- · Replies 12 ·
Calculating Induced Current in a Coil Surrounding a Changing Current Solenoid
- ooohffff
- · Replies 5 ·
Magnetic field inside a cylinder with an offset hole
- oneofmany850
- · Replies 2 ·
Finding magnitude and direction of resultant and equilibrant forces
- JMxBelfast
- · Replies 50 ·
Determine the diameter of a piston
- skrat
- · Replies 2 ·
Vector Nature pf Projectile Motion
- hsadiq98
- · Replies 2 ·
What is the Time Required to Boil Away 1.0kg of Ice Using 900W of Power?
- LGS1970
- · Replies 3 ·
Why Does ɪa = TR in Angular Motion?
- Luke0034
- · Replies 9 ·
Block pulled across floor with friction work of 380J
- jakeginobi
- · Replies 10 ·
How Is the Potential Energy of a Bobbin Calculated in a Magnetic Field?
- txoricillo
- · Replies 1 ·
Are the resistors in series vs in parallel?
- bryyo357
- · Replies 11 ·
Converging/diverging mirrors/lenses: conceptual question
- tensor0910
- · Replies 1 ·
What does the buoyant force depend on?
- NewSoul
- · Replies 22 ·
Simple Harmonic Motion Given Amplitude and Frequency
- Vanessa Avila
- · Replies 5 ·
Wave speed for non-uniform density?
- Blue_Angel
- · Replies 6 ·
Finding Frictional Force and Power Using Work and Energy
- RushBJJ
- · Replies 4 ·
Finding time of how long the block travels (SHM)
- Vanessa Avila
- · Replies 5 ·
Conservation of Energy with heat
- jakeginobi
- · Replies 5 ·
Calculating Proton Energy in a Cyclotron
- Kajan thana
- · Replies 1 ·
Conservation of Angular momentum and linear momentum
- WhiteG7
- · Replies 7 ·
Distance between 2 axis in Parallel Axis Theorem
- Sunbodi
- · Replies 5 ·
Thoughts Experiment about Frame of References
- kasha
- · Replies 2 ·
The ball's maximum speed relative to the vehicle?
- Vanessa Avila
- · Replies 12 ·
Projectile motion of basketball
- tensor0910
- · Replies 10 ·
Lagrangian for falling disk unwinding from fixed disk
- Elvis 123456789
- · Replies 2 ·
Rotating uniform rod about an arbitrary axis
- Dustgil
- · Replies 24 ·
Current and voltage with inductors and capacitors
- Cocoleia
- · Replies 1 ·
How do I calculate uncertainties for this experiment?
- henry wang
- · Replies 8 ·
Finding current in circuits with inductors and capacitors
- Cocoleia
- · Replies 22 ·
Finding displacement from x(t)=(7.40cm)cos[(4.16rad/s)t−2.42rad] at t=1.00s
- Vanessa Avila
- · Replies 5 ·
Work done given force as a function of position
- Thenotsophysicsguy
- · Replies 2 ·
Lagrangian of two mass and spring/pulley system
- Elvis 123456789
- · Replies 14 ·
How much work done by friction when a box w/apparent mass...?
- jmm5180
- · Replies 4 ·
Calculating Heat Transfer in a Cylinder with CO2 Gas at Different Temperatures
- rancam
- · Replies 3 ·
Collision problem, conservation of momentum
- Blue_Angel
- · Replies 1 ·
Calculating Speed and Kinetic Energy in a Rotating Rod
- tamakitty
- · Replies 1 ·
A 165N sled is pulled a distance of 205m. What angle?
- jmm5180
- · Replies 1 ·
How much energy is lost in an inelastic collision?
- Eclair_de_XII
- · Replies 9 ·
Work done by torque on a wheel turning about a curb
- Taulant Sholla
- · Replies 7 ·
What is the magnetic field at point P?
- Vitani11
- · Replies 2 ·
What type of charges in currents produce a magnetic field?
- Vitani11
- · Replies 1 ·
Direction of Charged particle in magnetic field
- gkamal
- · Replies 9 ·
How Fast Was the Car from City B Initially?
- PITPin
- · Replies 9 ·
How to calculate uncertainty of gradient of straight line?
- henry wang
- · Replies 8 ·
Can flat iron be heated by friction?
- Erish
- · Replies 13 ·
Magnitude of average force exerted by each particle on other
- TRVSA
- · Replies 4 ·
What charge would have to be fixed at the origin?
- TRVSA
- · Replies 3 ·
Special Relativity: Find speed of 3rd object.
- Ken Miller
- · Replies 2 ·
Energy conservation in wave superposition and interference
- Biker
- · Replies 17 ·
Prove n2 < N < n1 for effective index in total internal reflection
- Alvis
- · Replies 3 ·
Finding the torque causing a car to rotate about its tire
- WWCY
- · Replies 16 ·
Question on destructive and constructive interference
- WWCY
- · Replies 6 ·
Particle distribution, Diffusion
- Selveste
- · Replies 1 ·
Change in number of microstates
- Kara386
- · Replies 2 ·
Air track - Inclined Plane experiment
- PhysicEng
- · Replies 9 ·
Total charge in a capacitive circuit
- musicboy
- · Replies 3 ·
Horizontal distance for stone thrown on the moon with reduced gravity
- Tanha Kate
- · Replies 1 ·
Error propagation - inverse of an error
- emeraldskye177
- · Replies 9 ·
Consider a particle moving through magnetic field(T/F)
- gkamal
- · Replies 7 ·
Period and velocity at perihelion/aphelion
- Cocoleia
- · Replies 13 ·
Converting diameter to 1/d² for nichrome wire resistivity lab
- mirs
- · Replies 21 ·
What Is the Entropy Change When Ice Melts in Hot Water?
- tom4real
- · Replies 2 ·
What is the direction of the currents in each side?
- horsedeg
- · Replies 5 ·
Why does gas only conduct when the electric field reaches a certain value?
- Kajan thana
- · Replies 2 ·
Retarding force on a spherical satellite moving through atmosphere
- Niall Kennedy
- · Replies 8 ·
Adding Vectors using Cefore Method
- hsadiq98
- · Replies 2 ·
Why do our bodies stay neutral after combing our hair?
- Efast
- · Replies 7 ·
Finding capillary tube circumference from surface tension and weight
- vijayram
- · Replies 1 ·
Centripetal force ball on a string lab
- Revengeance
- · Replies 3 ·