Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
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 ·
Best way to calculate UV-Vis absorption onset?
- Dan Zar
- · Replies 1 ·
What is the speed of an object falling from a rotating spherical shell setup?
- ekram
- · Replies 1 ·
Ball rolling down an incline gaining mass
- Physgeek64
- · Replies 11 ·
What Are the Damping Mechanisms in Grand Pianos?
- Radic S
- · Replies 4 ·
Finding potential difference for electron accelerated to 0.8c
- Kung-Fu
- · Replies 8 ·
Why multiply by cos(45°) when resolving electric field components
- cros0
- · Replies 3 ·
Solving angular acceleration Problem
- pennywise1234
- · Replies 5 ·
Trigonometric Solution for Resultant Vector Magnitude and Direction
- pennywise1234
- · Replies 15 ·
Position of electron motion 2D
- Ab17
- · Replies 2 ·
Mass point sliding on a rotating line (Lagrangian)
- JulienB
- · Replies 15 ·
Process which electricity is generated (Nuclear power)
- Radic S
- · Replies 3 ·
Why is the electric field negative in this problem?
- cros0
- · Replies 2 ·