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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What do interference and diffraction have in common
- annalian
- · Replies 1 ·
Point of zero electric potential between +4.0 nC and another charge
- Hannah7h
- · Replies 3 ·
How does surface tension exert force on a bubble?
- Vibhor
- · Replies 21 ·
Circuit problem with two voltage source
- terryds
- · Replies 18 ·
Newtonian physics word problem static friction
- late347
- · Replies 15 ·
Which waves can have a constructive interference?
- annalian
- · Replies 3 ·
What Height Does KE Become Half for a 2 kg Body Thrown Upward?
- alijan kk
- · Replies 2 ·
Relative Velocity of Two Rockets and the Earth
- rbn251
- · Replies 8 ·
Deriving the Time Period of a Pendulum with Small Angle Approximation
- JulienB
- · Replies 2 ·
Angular Momentum of a rotating mass
- grassstrip1
- · Replies 3 ·
Rat Running on Ice: Solutions & Tips
- Vibhor
- · Replies 19 ·
Find the tension in the rope pulling a box at an angle
- qwertyqwert321
- · Replies 5 ·
Calculating Resistance in Prototype Boat using Formula of Force
- welovephysics
- · Replies 27 ·
A mass hits other two, one on top of the other
- Karol
- · Replies 16 ·
Finding equilibrium temperature when hot iron is placed in water
- TT0
- · Replies 5 ·
Which formulas do I use to solve these pr
- ProtoFLX
- · Replies 1 ·
Why does the point experience NEGATIVE field strength?
- 1832vin
- · Replies 2 ·
Calculating Radial Acceleration of a Rotating Wheel
- David112234
- · Replies 2 ·
Kinematics involving an airplane
- davedave
- · Replies 3 ·
Maximum load platform can withstand
- foo9008
- · Replies 34 ·
Is the scale ratio Lm/Lp or Lp/Lm for prototype and model lengths?
- welovephysics
- · Replies 3 ·
Force Calculation in High Jump Takeoff
- pennywise1234
- · Replies 2 ·
Magnitude and Direction of Frictional Force on a Moving Object
- pennywise1234
- · Replies 9 ·
How to Calculate Net Resistance in an Infinite Sequence of Resistors?
- diredragon
- · Replies 5 ·
Pressure calculations in a manometer
- Faiq
- · Replies 13 ·
Energy conversion in a spring SHM
- Radic S
- · Replies 13 ·
Dynamics of Rotational Motion and hinge
- denny2
- · Replies 2 ·
How Do You Calculate Energy and Speed on a Roller Coaster?
- alijan kk
- · Replies 8 ·
Drawing a heat curve of ice melting
- Evangeline101
- · Replies 4 ·
(Special relativity) Two masses connected by spring
- vielendank
- · Replies 4 ·
Reversing an electron's speed in a magnetic field
- Biker
- · Replies 3 ·
Longitudinal and Transverse waves transmitting at same Veloc
- Buster R
- · Replies 1 ·
Deriving Discharge Expression for Broad Crested Weir Model
- welovephysics
- · Replies 1 ·
Phase problem in a damped RLC circuit
- anizet
- · Replies 3 ·
Checking calculations for 30V circuit with series and parallel resistors
- j doe
- · Replies 2 ·
Ball rotated on a string vector diagram
- Ab17
- · Replies 25 ·
What is the Maximum Height Achieved by a Soccer Ball Kicked at a 45° Angle?
- pennywise1234
- · Replies 11 ·
Ratio of size of prototype and model
- welovephysics
- · Replies 12 ·
What are the equations for solving combined circuit problems?
- j doe
- · Replies 22 ·
How Do You Calculate Forces on a Crate on an Inclined Plane?
- Nikstykal
- · Replies 5 ·
How Does Hill Angle Affect Pedal Force on a Bike?
- ollie_craw
- · Replies 9 ·
Conservation of Momentum Spaceship Question
- qwertyqwert321
- · Replies 6 ·
Calculating Work Done by a Child Pulling a Toy Car
- j doe
- · Replies 2 ·
U-substitution limits in electric field of a disk integral
- Taulant Sholla
- · Replies 2 ·
Use a bubble chamber photo to find collision/decay particles
- katamaster818
- · Replies 3 ·
Conservation of energy: Conceptual question
- Neha Siddhartha
- · Replies 9 ·
Charged particle in centre of equilateral triangle
- prehisto
- · Replies 7 ·
Buoyancy correction in a Kater's pendulum
- JulienB
- · Replies 4 ·
M=Fl solve a Moments problem (force X distance)
- Drizzy
- · Replies 13 ·
Calculating Maximum Height in Projectile Motion on a Trampoline
- pennywise1234
- · Replies 6 ·
Angular velocity and acceleration
- Nikstykal
- · Replies 1 ·
How Does Carbon-12 Have a Lower Rest Energy Than Its Separate Nucleons?
- fridakahlo
- · Replies 3 ·
Energy cost and power consumption of refrigerators and washers
- Evangeline101
- · Replies 11 ·
Pressure of wheel after being pumped
- songoku
- · Replies 8 ·
How does stirring a cup of tea affect the entropy of the tea and the universe?
- bananabandana
- · Replies 11 ·
How to Calculate Gas Usage in Pressure Drop Situation?
- prehisto
- · Replies 4 ·
Which of the following strong reactions is possible?
- katamaster818
- · Replies 3 ·
Electrostatics problem- two sphere
- Physgeek64
- · Replies 3 ·
Ship draft (draught) word problem buoyancy
- late347
- · Replies 3 ·
Finding i1(t) and i2(t) in AC circuit with two voltage sources
- Incand
- · Replies 2 ·
Hardy Cross method correction problem
- welovephysics
- · Replies 2 ·
A question on percentage uncertainty
- Mr Bob555
- · Replies 4 ·
What distance does the block slide?
- JiJiasd
- · Replies 7 ·
Thickness of object to halve the stress
- songoku
- · Replies 7 ·
Time Dilation particle lifetime
- katamaster818
- · Replies 2 ·
Can some explain vector a+b must be great than a-b
- PoohBah716
- · Replies 3 ·
Treating a projectile like a rotational system?
- LiliPling
- · Replies 18 ·
Understanding Velocity and Acceleration in Rotational Motion
- David112234
- · Replies 2 ·
Simple problem calculate total Resistance parallel
- late347
- · Replies 2 ·
Young's double-slit interference?
- kimlu
- · Replies 4 ·
Calculating Water Depth Using Snell's Law and Trigonometry
- prehisto
- · Replies 4 ·
Finding total current in a parallel circuit with 3Ω, 6Ω, 9Ω resistors at 12V
- Zoey
- · Replies 29 ·
Finding current magnitude between two points in a circuit
- askor
- · Replies 4 ·
Solving Work Done by Pushing a Lawnmower
- fleur
- · Replies 3 ·
Calculating focal length from a number of focal ratios
- Fernwood
- · Replies 5 ·
Finding electric field vector components from multiple charges
- gamma-guy
- · Replies 5 ·
Conical pendulum angle with 2.5 N centripetal force
- Banker
- · Replies 9 ·
Work done in moving a charge to infinity
- beamie564
- · Replies 9 ·
Second Newton's law in rotation with pulley.
- PhysicsKush
- · Replies 4 ·
Motorcycle Police Officer Chasing Car
- Ummiya
- · Replies 18 ·
How to calculate the height of a skier
- JiJiasd
- · Replies 6 ·
Kinetic energy of charge between cell membrane walls
- johnknee
- · Replies 8 ·
Resultant Displacement with direction problem
- pennywise1234
- · Replies 1 ·
Finding net force on charge C from two equal forces at 45°
- Bagwan
- · Replies 4 ·
Electric circuitry, confusion about the electric charge
- late347
- · Replies 5 ·
What is the average power of a boy
- JiJiasd
- · Replies 3 ·
Does air friction slow a satellite in low Earth orbit?
- Bashyboy
- · Replies 20 ·
Why does a swimmer take longer to complete a trip in a river with a current?
- Ab17
- · Replies 10 ·
When Does the Rate of Change of Magnetic Flux Equal Zero?
- Neha98
- · Replies 1 ·
Oil flow through a pipe: volumetric rate, mass rate, fill time, and pressure
- smosikas
- · Replies 4 ·
The speed of a projectile when it reaches its maximum height
- Ab17
- · Replies 12 ·
Fluid Mechanics-Bernoulli and Energy Equations
- Joseph95
- · Replies 1 ·
The block and spool problem (dynamics of rigid bodies)
- multiplegoats
- · Replies 13 ·
With which speech goes the Mass through the Equilibrium?
- wiegetz
- · Replies 4 ·
Fluid discharge from pipe to atmosphere
- foo9008
- · Replies 2 ·
Why does this pipe network problem give different answers for different flow equations?
- foo9008
- · Replies 9 ·
When Will the Proton Meet the Rear of the Ship?
- i_hate_math
- · Replies 3 ·
How to solve for Initial velocity Problem
- pennywise1234
- · Replies 6 ·
Triognometric problem with vectors (how to solve)
- pennywise1234
- · Replies 10 ·
Using the Work-Energy Theorem to Solve a Textbook Sliding Problem with Friction
- Yosty22
- · Replies 9 ·