Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Gravitation and Newton's Synthesis
- GreenPrint
- · Replies 2 ·
Heat capacity and temperature change practice problems
- MrScorpion
- · Replies 5 ·
Calculating the voltage and electric field strength between two parallel plates
- mmoadi
- · Replies 2 ·
Prove rms voltage using integration
- iamnew
- · Replies 1 ·
Problems with solar cell efficiency
- sc3005
- · Replies 20 ·
Max Vertical Reach at Back Wall: Solving Projectile Problem
- xL0VEN0TE
- · Replies 2 ·
Moment of inertia for T shaped object
- Dell
- · Replies 4 ·
A difficult problem with dynamics
- doodijh
- · Replies 10 ·
Time of maximum displacement in simple harmonic motion?
- liltiga
- · Replies 4 ·
Collision of 400 kg and 100 kg satellites in opposite orbits
- thebomb
- · Replies 12 ·
Kinetic Energy and Velocity of a Dropped Ball
- Ki-nana18
- · Replies 3 ·
Ballistics pendulum on steroids
- Vb1702
- · Replies 1 ·
Calculating force on the charges placed in the corners of a triangle
- mmoadi
- · Replies 4 ·
Can Dimensional Analysis Solve Non-Linear Force Frequency Dependencies?
- Mechdude
- · Replies 5 ·
Motion in one demansion, photogate timer problem
- machinarium
- · Replies 3 ·
Using Conservation of Energy to Find Friction Coefficient
- 312213
- · Replies 5 ·
Determine the value of the inductance ?
- Fazza3_uae
- · Replies 5 ·
Maddening problem on dampened harmonic motion
- ProvidenceNT
- · Replies 14 ·
Planetary Motion,Feynman Lectures
- @run
- · Replies 1 ·
When is tangential acceleration twice the perpendicular component?
- AJadhav
- · Replies 2 ·
What Causes Static Cling in Clothes?
- wmrunner24
- · Replies 1 ·
Binary Star system common period
- slft
- · Replies 1 ·
Simple Harmonic Motion an Object Attached to a Spring
- julian92
- · Replies 16 ·
How Far Will the Mass Travel Beyond the Incline After Being Released?
- 312213
- · Replies 1 ·
Potential between two particles
- Cosmossos
- · Replies 4 ·
Circuit with resistors in series and two power supplies
- 743344
- · Replies 12 ·
Two suspended current-carrying wires attracting at different angles from vertical
- doodijh
- · Replies 8 ·
Bullet hitting vest: is the force positive or negative?
- gold123456th
- · Replies 1 ·
Angular momentum conserved when rope length halves
- Jokerhelper
- · Replies 3 ·
Will the water rise in a capillary when placed on a freely falling lift?
- sowmya2010
- · Replies 3 ·
Finding the Magnitude of a Diplacement Vector
- Love_to_Learn
- · Replies 5 ·
Finding velocity after inelastic collision between car and truck
- sadaf.10
- · Replies 4 ·
How do you find frictional force with no mass given?
- KingPhysics
- · Replies 4 ·
Earth-Moon gravitational equilibrium distance for spacecraft
- GreenPrint
- · Replies 26 ·
Harmonic Motion Maximum Acceleration?
- wmrunner24
- · Replies 16 ·
The Conservation of Momentum - Physics 30
- Kylah
- · Replies 2 ·
Some rotation without slipping problems.
- nns91
- · Replies 8 ·
Train deceleration problem and counting rails vs pillars
- fireemblem13
- · Replies 10 ·
Calculating the Distance between Mars and Phobos using Mass and Orbital Period
- Danik
- · Replies 10 ·
Number of photons radiated at cavity's hole
- jg370
- · Replies 10 ·
How Does Charge Transfer in Metal Rod Experiments?
- aloshi
- · Replies 2 ·
Rain Drops falling down in a uniform cloud
- Erfan
- · Replies 2 ·
Energy-Time Uncertainty Problem.
- alexgmcm
- · Replies 10 ·
Solving the Force of a Ball Struck by a Bat
- midey
- · Replies 3 ·
Energy dissipated by air resistance through integration
- yoghurt54
- · Replies 8 ·
Is My Elastic Band Car Work Calculation Correct?
- lezard1
- · Replies 14 ·
How to design a bandpass filter with specific specifications using MATLAB?
- blackout77
- · Replies 3 ·
How Do You Calculate Tension in Ropes Supporting a Painter on a Board?
- Tomiscool
- · Replies 2 ·
Calculate Reynolds Number for 0.3m Diameter Pipe Flow
- tomwilliam
- · Replies 3 ·
Force and angle for 50 kg mass with constant velocity over 60 m
- jl1642
- · Replies 23 ·
Ballistic pendulum velocity from swing angle and string length
- yamugushi
- · Replies 5 ·
What Are the Tensions in Two Blocks With Friction and Acceleration?
- Zywo
- · Replies 1 ·
How to prepare for a first Newtonian physics course
- abrantes123
- · Replies 6 ·
Rocket's forces and acceleration
- ybm
- · Replies 7 ·
Speed, acceleration time and distance
- ybm
- · Replies 2 ·
Acceleration,velocity and time of a car
- skp123
- · Replies 15 ·
How Does Faraday's Law Apply to a Non-Uniformly Charged Cylindrical Shell?
- 1stepatatime
- · Replies 2 ·
How Does Inclination Impact Car Deceleration on an Uphill Road?
- GreenPrint
- · Replies 6 ·
Problem involving the equation of a plane
- knowlewj01
- · Replies 8 ·
Find Single slit diffraction width
- misunderstood
- · Replies 4 ·
Using Fourier analysis to find frequency-amplitude spectrum?
- jamdr
- · Replies 7 ·
What is the circumference of the track?
- Brittykitty
- · Replies 4 ·
Electric Field from Permanent Magnet
- insomniac392
- · Replies 1 ·
Voltage Induced in Coil: Hall Effect
- zooropa
- · Replies 1 ·
Finding change in velocity for water flow through a pipe
- lil08
- · Replies 1 ·
Specific Heat Problem in Celsius
- Ki-nana18
- · Replies 2 ·
What Determines the Current in an AC Circuit with a Light Bulb?
- Fazza3_uae
- · Replies 1 ·
Are Ions Involved in Electric Currents?
- aloshi
- · Replies 1 ·
Solving Isobaric Process Heat Addition Problem
- yankees26an
- · Replies 2 ·
How Do You Calculate the Temperature for a Hot Air Balloon to Lift Off?
- slowhands
- · Replies 3 ·
Solving for the Speed of an 8kg Bullet
- midey
- · Replies 2 ·
Rotational Motion Find g - Inclined Plane
- Wellesley
- · Replies 7 ·
Simple Harmonic Motion (will be the death of me)
- -Chad-
- · Replies 7 ·
Special Relativity Question: On the Ether
- Fawkes511
- · Replies 2 ·
Differences in Water Pressure in a Horizontal Pipe with Changing Radius
- yankees26an
- · Replies 3 ·
Current through a voltmeter with internal resistance
- jumbogala
- · Replies 1 ·
Inductance of a 30-turn coil with external magnetic field
- fishingspree2
- · Replies 5 ·
How Far from the Central Maximum Will the Bright Fringe Be?
- Mspike6
- · Replies 2 ·
Calculate Hydrostatic Force Exerted on Plane Submerged in Water
- AdkinsJr
- · Replies 4 ·
Hydrostatic force on submerged cylindrical drum with radius 3 ft
- AdkinsJr
- · Replies 1 ·
Proving curl(fF) = f curl(F) + (∇f) × F
- fttteotd
- · Replies 1 ·
Why two valves between chamber and foreline trap in a vacuum system
- jumbogala
- · Replies 2 ·
Understanding Friction Force: A 15.0kg Box
- GreenPrint
- · Replies 1 ·
Solving Speed of Objects Problem
- yankees26an
- · Replies 1 ·
Asteroid deflection with nuclear bomb and zero barrier
- josftx
- · Replies 16 ·
Calculating Power from Lux of a Solar Cell
- sc3005
- · Replies 8 ·
Temperature gradient in cylindrical heat transfer at r = 0.07m
- libelec
- · Replies 15 ·
Find the factor by which the KE of the ball increases
- nolee52738
- · Replies 5 ·
Secondary voltage and current?
- SAT2400
- · Replies 1 ·
What Is the Phase Angle in a Low Resistance L-C Series Circuit?
- SAT2400
- · Replies 3 ·
RLC Circuit Help: Find Max Source Voltage & Power Factor
- SAT2400
- · Replies 2 ·
What is the Inductance of the Coil in a Radio Tuning Circuit?
- SAT2400
- · Replies 1 ·
What Frequency Does a 75m High AM Radio Antenna Transmit?
- SAT2400
- · Replies 3 ·
Elevator motor power and mass calculation
- Fazza3_uae
- · Replies 3 ·
Average Translational Kinetic Energy of 1 Molecule: Solve for N
- yankees26an
- · Replies 4 ·
Block on incline with spring: why does it move if spring force exceeds weight component?
- Zanychap
- · Replies 5 ·
Solve for Cold Surface Temp. of Slab with Heat Flow Rate 240 W
- yankees26an
- · Replies 3 ·
When is the center of mass frame inertial for two accelerating cars?
- yoni162
- · Replies 5 ·
How do I linearize radioactive decay data to find the decay constant?
- jumbogala
- · Replies 4 ·
What is the Spring Constant for a Compressed Mass on a Vertical Spring?
- shahar_rod
- · Replies 3 ·