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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Impulse and Momentum of a rocket
- Isquarey
- · Replies 3 ·
Two charges and electric field?
- timnswede
- · Replies 4 ·
Calculate Final Speed of 58kg Skier on 25° Slope w/ 70N Friction
- Flinze
- · Replies 4 ·
Question on thermal equilibrium?
- Shindo
- · Replies 5 ·
Answer Work & Kinetic Energy for Mass m Whirling on Table
- geoffrey159
- · Replies 1 ·
Vertical energy of a pendulum - is there one?
- jojotank
- · Replies 2 ·
Finding the Center of Mass of a Suspended Scaffold and Paint Cans System
- bravoman
- · Replies 4 ·
Solid Angle Rutherford Scattering
- Purple Baron
- · Replies 2 ·
How Do You Calculate Elevator Cable Tension for Maximum Acceleration?
- yandereni
- · Replies 4 ·
Dynamics: Newton's Second Law_Tension_1
- yandereni
- · Replies 8 ·
Determining the Acceleration (Inclined Plane Problem)
- yandereni
- · Replies 3 ·
Question about hydrostatic pressures
- Tkopperl
- · Replies 10 ·
What branch or branches of physics is the following?
- saintrenz
- · Replies 5 ·
Determining the Acceleration (Two objects in contact)
- yandereni
- · Replies 1 ·
Cutoff Potential vs. Kinetic Energy in Electron Volts: What's the Difference?
- garr6120
- · Replies 5 ·
How Is Extra Energy Calculated in a Stretched Wire?
- Tulatalu
- · Replies 10 ·
Tension Problems Given Two Weights
- yandereni
- · Replies 3 ·
What is the Ideal Temperature for Cooling a Cup of Tea?
- The28
- · Replies 5 ·
Calculating Acceleration and Force in a Racecar: A Newtonian Approach
- yandereni
- · Replies 7 ·
Resulting force and velocity help
- Sonny18n
- · Replies 2 ·
Sound waves in a closed pipe Problem
- pstir2
- · Replies 12 ·
Solve Box-Spring Problem: Setup Differential Equation
- havsula
- · Replies 16 ·
Rocket Maximum Velocity: How to Calculate and Convert Units for Accurate Results
- asadpasat
- · Replies 14 ·
Kirchhoff's and Ohm's law circuit diagram issue.
- Benthal
- · Replies 6 ·
Initial Velocity + Free Fall = Time
- julianwitkowski
- · Replies 1 ·
[Optics] Concave-Convex lens radius
- decsis
- · Replies 1 ·
How does a magnetic field perform no work?
- mahrap
- · Replies 9 ·
Magnetism and Current Concept Query
- Offlinedoctor
- · Replies 1 ·
Latent Heat in Solid-->Liquid transitions (phase change)
- thonwer
- · Replies 1 ·
Heat capacity ratio yields inconsistent results
- uter
- · Replies 9 ·
Physics Report Help -- Simple Harmonic motion and Elastic force
- Nancee_K
- · Replies 14 ·
Electric field and electric potential problem
- ZARATHUSTRA
- · Replies 3 ·
Inverse Square Law HELP PLEASE
- RichardGib
- · Replies 3 ·
Need 2D plot of plane wave, cylindrical & spherical wave
- allamsetty
- · Replies 7 ·
Solving the Car Parking Lights Puzzle: Current, Resistance & Time Calculations
- stephenranger
- · Replies 10 ·
Bernoulli Equation Simple derivation help
- kashan123999
- · Replies 7 ·
What is the correct force on q1 and the electric dipole moment?
- henrybrent
- · Replies 4 ·
Finding PE given mass, distance, and energy lost.
- Adam Affagal
- · Replies 3 ·
Law of universal gravitation (am I doing it wrong)
- Thegiver431
- · Replies 3 ·
How Do You Calculate Thevenin Equivalent Circuit Without a Load Resistor?
- Alexander Max
- · Replies 3 ·
Help with deriving time, velocity, displacement
- RachaelA
- · Replies 7 ·
Circular motion problem -- A ball rolling down an incline
- bijou1
- · Replies 7 ·
What Is the Temperature of Compressed Air in a Diesel Cylinder?
- Karol
- · Replies 3 ·
Fluids acceleration on inclined plane
- jonny23
- · Replies 35 ·
Calculating Buoyancy: Solving for the Height of a Boat in Salt Water
- BrainMan
- · Replies 8 ·
Physics Problem with Spring Constant and Kinetic Friction
- Q7heng
- · Replies 9 ·
Double Slit Help: 2nd Order Dark Fringe Location
- chrisahn97
- · Replies 8 ·
Very basic form of the diffusion law for gasses
- Coffee_
- · Replies 2 ·
Object is accelerated from rest , find KE
- discosucks
- · Replies 12 ·
Increasing Gravity and Acceleration
- kaikalii
- · Replies 1 ·
Calculating Initial Speed for a 45 Degree Angle Basketball Shot
- oreo
- · Replies 8 ·
Perpendicular force with a spiral
- Cri85
- · Replies 17 ·
Ideal Gas Law Problem: Finding Pressure with Temperature Change and Fixed Mass
- TaraaaK
- · Replies 9 ·
How Do You Calculate the Net Force on an Accelerating Car?
- discosucks
- · Replies 3 ·
Physics Problem with Lifting Force and Drag Coefficient
- Q7heng
- · Replies 2 ·
Work done by the tension on a cable
- discosucks
- · Replies 13 ·
What is the K.E. of the satellite?
- starchaser2020
- · Replies 4 ·
Pump compresses air into a tank
- Karol
- · Replies 4 ·
Adiabatic Process | Plotting V-P Diagram
- Karol
- · Replies 8 ·
What Determines the Speed of Waves?
- duran9987
- · Replies 1 ·
Calculating Delta V for Orbit Change
- starchaser2020
- · Replies 1 ·
Vector Addition: Which Statement is True?
- rasen58
- · Replies 10 ·
Radius relation to centripetal force
- rasen58
- · Replies 2 ·
Solving for final position with a negative work value
- Selayna
- · Replies 2 ·
Levers & Torque: Moving Earth w/ Archimedes Lever?
- wolfspirit
- · Replies 6 ·
Transverse waves oscillation direction
- jonny23
- · Replies 5 ·
Velocity is proportional to distance
- nobahar
- · Replies 7 ·
Age of Sample: U-235 & U-238 Abundances
- Purple Baron
- · Replies 2 ·
Three Springs in an Equilateral Triangle
- agnishom
- · Replies 4 ·
Nuclear physics reaction, minimal energy to make it work
- Coffee_
- · Replies 23 ·
What is the minimum energy required to produce an electron-positron pair?
- arpon
- · Replies 3 ·
How Does Angular Velocity Relate to the Angle in Nested Cylinders?
- asdfghhjkl
- · Replies 4 ·
Mean value of graph - is my reasoning correct?
- PhysicStud01
- · Replies 15 ·
Dynamics Problem -- box accelerated horizontally via a mass & pulley system
- frosty
- · Replies 9 ·
Pendulum measuring acceleration of car
- oreo
- · Replies 9 ·
Binary Stars and Apparent Magnitudes
- LavaLynne
- · Replies 1 ·
How Does Discharging a Capacitor Affect Its Internal Magnetic Field?
- Ben Whelan
- · Replies 3 ·
Pedagogical machine problem (K&K 2.20)
- wesson
- · Replies 9 ·
Torque seesaw problem- rotational equilibrium
- bijou1
- · Replies 7 ·
Different angle in different frames, intro relativity
- Coffee_
- · Replies 7 ·
Question regarding why an example In kolenkow mechanics
- MidgetDwarf
- · Replies 2 ·
Finding Acceleration in a Pulley and Slope System
- Jazz
- · Replies 6 ·
Just a confusion -- A mass falling onto a pivoting rod
- Satvik Pandey
- · Replies 13 ·
Water flows from a compressed tank
- Karol
- · Replies 2 ·
Calculate Tension in Rope: Principle of Moments Homework
- Marcus27
- · Replies 3 ·
How is Rocket Propulsion Affected by Gravity?
- Lola Luck
- · Replies 5 ·
Time-energy uncertainty and derivative of an operator
- peripatein
- · Replies 5 ·
The use of cross section in a particle collision exercise.
- Coffee_
- · Replies 3 ·
Mass of Pion in Gev/c^2: Calculate and Convert
- Abby D
- · Replies 1 ·
Where is North, given this current?
- AAAA
- · Replies 12 ·
Electromagnetic emission lines for a hydrogen atom
- Jdraper
- · Replies 4 ·
Constant horizontal force and friction
- rasen58
- · Replies 4 ·
Does the Golf Ball Land Before, In, or After the Lake?
- rasen58
- · Replies 3 ·
Atwood's machine with angular momentum
- hitemup
- · Replies 4 ·
Understanding Charge Transfer in C & 2C Circuit
- arpon
- · Replies 3 ·
Normal Reaction in the following cases
- Kasul
- · Replies 6 ·
Calculating Tension in a String with Mass & Torsion
- jonny23
- · Replies 4 ·
Calculate acceleration due to gravity
- rasen58
- · Replies 4 ·
What is the solution to the straw paradox?
- Ansuman
- · Replies 9 ·
Kirchhoff's Loop Rule Problem.
- Prashasti
- · Replies 10 ·