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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Electromagnetism: Magnetic Fields
- SummerDawns
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Whether impulses passing to brain have any relation with current in physics?
- ajaykrishna90
- · Replies 5 ·
Solving for Initial Velocity of a Ball on a String | Physics
- Mewniew
- · Replies 29 ·
Power in a simple electric circuit
- Karol
- · Replies 6 ·
Should you aim upstream or downstream to cross a river fastest?
- hafsa786786786
- · Replies 2 ·
Superposition Principle to Solve Circuit
- Gwozdzilla
- · Replies 1 ·
What is faster the cannon ball or its shadow?
- Liam Teevens
- · Replies 14 ·
Young's modulus of a hanging wire
- Westin
- · Replies 1 ·
Velocity and Position with Friction
- Westin
- · Replies 1 ·
Two different springs in parallel
- Westin
- · Replies 6 ·
Back EMF and inductance in RL circuits
- ah4p
- · Replies 2 ·
Spaceship launching instrument package
- geoffrey159
- · Replies 11 ·
Calculating Heat Generated in a Coil due to Changing Current and Resistance
- AdityaDev
- · Replies 22 ·
Inductor Role in Time Constant of a DC Circuit
- ah4p
- · Replies 8 ·
Finding acceleration direction for blocks connected by pulley on inclined plane
- Y*_max
- · Replies 9 ·
Simple collision between rocks in outer space. Webassign
- najatau
- · Replies 2 ·
Electric Flux Through a Hole in a Sphere?
- PosteMortem
- · Replies 1 ·
Reflected and transmitted fields for EM wave at glass-air interface at 45° and 80°
- Zaheer
- · Replies 5 ·
Finding gravitron rotational frequency
- G4e8cko
- · Replies 4 ·
Calculating Work Done by Expanding Gas in an Automobile Engine
- Mtscorpion12
- · Replies 6 ·
Electric Field above a cylindrical shell w/ charge density
- ryankunzzz
- · Replies 16 ·
Can a Rope Held by Macho Man Stay Perfectly Horizontal with a Weight?
- leejos16
- · Replies 2 ·
Electric potential at center of semicircle
- toothpaste666
- · Replies 21 ·
Angular and linear velocity propeller
- henry3369
- · Replies 1 ·
Twin paradox: why does Joe's trip take less time in his frame?
- leonmate
- · Replies 9 ·
Find phase angle of RLC network
- D.B0004
- · Replies 1 ·
Why doesn't upthrust increase when a solid is pushed deeper in liquid?
- Suraj M
- · Replies 8 ·
Determining average acceleration during point of impact
- miles davis
- · Replies 3 ·
Mass hung from middle of steel wire sagging 2 cm
- gracy
- · Replies 14 ·
Velocity vectors in different directions for momentum
- jb007
- · Replies 3 ·
Calculating Pressure at Point A Using Excess Pressure Formula
- Suraj M
- · Replies 4 ·
What is the work needed to move a charge
- Karol
- · Replies 14 ·
Potentiometer and galvanometer experiment
- gracy
- · Replies 32 ·
Solving initial velocity for falling object
- heythere1010
- · Replies 5 ·
Force on fulcrum for balanced seesaw with girl and boy
- R Sarwar
- · Replies 1 ·
Calculating Work Done by Expanding Gas in Spherical Bubble
- AdityaDev
- · Replies 6 ·
Why is the friction greater on rear wheels than front wheels in a car?
- lavankohsa
- · Replies 8 ·
Doppler effect problem (observer is moving away)
- Emmanuelle
- · Replies 2 ·
Force required to change direction
- rasen58
- · Replies 5 ·
Cross Section for Asteroid Impact
- ebjessee
- · Replies 4 ·
Cannon Muzzle Velocity Question ( Solved )
- ChiHawksFan
- · Replies 2 ·
Integration of an arc of charge
- vysero
- · Replies 3 ·
Electric field between parallel capacitor plates with given charge and area
- vysero
- · Replies 5 ·
Amplitude of 2 waves at a point
- Potatochip911
- · Replies 8 ·
Calculating Current in a Wire with a Moving Charged Particle
- Capacitance
- · Replies 3 ·
Expression for magnitude of magnetic force
- LivvyS
- · Replies 7 ·
What materials are best for creating fiber optics from seaweed or jelly?
- Roihan Yahya
- · Replies 3 ·
Solving for velocity in a variable mass system
- samjohnny
- · Replies 6 ·
Bungee cord design to stop a jump into Jello from 45 m
- Somoan
- · Replies 8 ·
Electric field and positive and a negative charge
- John Marow
- · Replies 1 ·
How to find initial velocity without being given time
- Qwerty123!
- · Replies 5 ·
Average Speed Over Given Distance - Driving me Nuts
- Sarlacc
- · Replies 13 ·
Electric field, potential, work and force
- vysero
- · Replies 12 ·
Pendulum clock loses 30 minutes in 12 hours
- Potatochip911
- · Replies 8 ·
Kinematics question -- 2 runners racing with different acceleration rates
- heythere1010
- · Replies 26 ·
What distinguishes ΔPE, PE, and PEaverage in oscillating systems?
- romantichero7
- · Replies 1 ·
How Much Energy Hits Each Eardrum from a 2500W Sound Source 20m Away?
- Potatochip911
- · Replies 2 ·
Problem Check: Equilibrium of Particles
- hdp12
- · Replies 1 ·
Uranium and radium blocks separating from compressed spring
- _N3WTON_
- · Replies 9 ·
A woman throws a ball at a vertical wall d = 5.0 m away.
- cbking1306
- · Replies 4 ·
Would you -- drawing of wood blocks and a ruler to measure a lens
- Syndy
- · Replies 14 ·
Kinematics playgound slide problem
- professor97
- · Replies 1 ·
Dropping two balls, one with twice the mass
- rasen58
- · Replies 7 ·
Multiple Power Source Circuit Analysis
- aseylys
- · Replies 9 ·
Sand transferring between coaxial rotating drums
- geoffrey159
- · Replies 21 ·
Projectile motion Q3 (A)
- Aaron Curran
- · Replies 6 ·
Equilibrium of a Particle: Determining Forces in Cables and F for a 4-kg Lamp
- hdp12
- · Replies 3 ·
Acceleration of a triple Atwood Machine
- Calpalned
- · Replies 5 ·
What is the man's upward acceleration when hoisting himself into a tree?
- kaspis245
- · Replies 11 ·
How do you make Zener diode connections for different types of diodes?
- gracy
- · Replies 41 ·
De Broglie Wavelength at Relativistic velocity
- Avatrin
- · Replies 6 ·
Determination of moment of inertia of a hollow cylinder
- Alettix
- · Replies 16 ·
Finding coeffiecient of friction
- ross moldvoer
- · Replies 8 ·
Force on base person in 30-person human pyramid
- ohenryu
- · Replies 2 ·
Distance to traveled to reach 0m/s not matter in impulse?
- jb007
- · Replies 3 ·
Diffraction Grating and Dispersion
- lauraliz94
- · Replies 3 ·
Charge on a capacitor in a series
- acdurbin953
- · Replies 1 ·
U-Tube (Pv=nRT, Pascals) Problem
- AKJ1
- · Replies 15 ·
How to get the magnitude and direction?
- Ika_10
- · Replies 8 ·
How Do Collision Types Affect Momentum and Energy Transfer?
- infiniteseconds
- · Replies 1 ·
Design voltage divider for 5V output with variable 0-5mA load
- sugz
- · Replies 23 ·
Newton's cradle with 50 g balls: why isn't the final ball's height used?
- Cascade
- · Replies 1 ·
Calculate Force Needed to Stretch Spring 48cm: 270 N/m
- ross moldvoer
- · Replies 2 ·
Net Force Direction for 10kg Mass: How to Determine?
- Amberly C
- · Replies 3 ·
Is the CO amount I found correct?
- chemman218
- · Replies 6 ·
River Boat Question That's Throwing Me Off
- Ben B.
- · Replies 1 ·
Man swimming across river with velocity relative to water
- Aaron Curran
- · Replies 38 ·
Why do the two decay problems give contradicting answers?
- PhysicStud01
- · Replies 17 ·
Quarter circle and electric field
- holdmyhand
- · Replies 15 ·
Why voltage drops exceed supply voltage in multi-loop circuit
- sugz
- · Replies 29 ·
How does acceleration affect the period of a pendulum in an elevator?
- ThatDude
- · Replies 11 ·
Capacitor needed for phase angle change (RLC network)
- D.B0004
- · Replies 1 ·
Calculating Density of High Altitude Air Using Ideal Gas Law
- Matt766
- · Replies 3 ·
Why is my momentum calculation giving 0.035 kg instead of the expected answer?
- Arcthor
- · Replies 2 ·
Displacement of deflected puck on ice
- hafsa786786786
- · Replies 6 ·
A rocket fires two engines simultaneously
- Tiffanygao325
- · Replies 1 ·
Does Initial Spring Tension Affect SHM Frequency?
- stannard97
- · Replies 9 ·
Newton's Laws - finding acceleration of block on sled
- jgray
- · Replies 12 ·
Ball hitting an inclined plane
- terryds
- · Replies 8 ·