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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The hot chocolate effect to investigate the effects on speed of sound
- Josielle Abdilla
- · Replies 4 ·
Diffraction, interference, single and double slit setups
- Yangi
- · Replies 3 ·
Conversion to fuel economy in equivalent MPG using kcal/h and mi/h
- Mustard
- · Replies 6 ·
Find the rate of change of velocity
- chucho11028
- · Replies 5 ·
Orbital dynamics math review for a computer simulation
- ElectronicStudent123
- · Replies 11 ·
An advanced two spring weighing machine
- Rya_Sly
- · Replies 13 ·
Two batteries and two resistors circuit - wrong possible answers ?
- mfratczak88
- · Replies 16 ·
Find how far a proton travels between capacitor plates
- r-swald
- · Replies 3 ·
Calcualtion of electric potential and radioactive decay
- Physicslearner500039
- · Replies 4 ·
Intensity and Interference Patterns (double slit)
- garthenar
- · Replies 5 ·
How can I solve the Spring Balance problem using alternative methods?
- cwill53
- · Replies 17 ·
Understanding Sign Conventions in Tractor and Barge Problem
- cwill53
- · Replies 20 ·
What is mean force in a tandem steam engine piston?
- cwill53
- · Replies 17 ·
Quick Check for Relativity HW, rocket passing by space station
- PhDeezNutz
- · Replies 9 ·
[Grade 12 Physics] Gravitational/circular motion #2
- hobbes1235
- · Replies 5 ·
Can Increasing Helium Density Affect Payload in Space?
- MrInventive
- · Replies 16 ·
Mechanical Energy of two Cannonballs fired at two different angles
- Mustard
- · Replies 9 ·
Acceleration and roller coaster question that I cannot figure out
- kevin2365
- · Replies 8 ·
[Grade 12 Physics] Circular/gravitational motion
- hobbes1235
- · Replies 21 ·
Gusset Plate Problem: Solving the Force on MN
- cwill53
- · Replies 2 ·
Equivalent Capacitance Between X and Y in this capacitor circuit
- Kaushik
- · Replies 5 ·
Conservation of energy in transformers
- jamie1121
- · Replies 5 ·
Is Entropy decreased for Free expansion of a Waals gas?
- Astrocyte
- · Replies 6 ·
Determing the center of gravity of a shaded section
- Guillem_dlc
- · Replies 14 ·
What actually is the centripetal acceleration formula?
- Adesh
- · Replies 28 ·
Determining the power of frictional force
- Gourab_chill
- · Replies 2 ·
Ratio of the Earth's core radius to total radius via seismic turning point
- peeballs
- · Replies 1 ·
Calculation of the amount of work done using potentials
- Physicslearner500039
- · Replies 5 ·
Mechanics -- Converting volumetric flow rate to nozzle velocity
- moenste
- · Replies 6 ·
Simple Vector Boat Problem, Conceptual Misunderstanding
- WRS
- · Replies 2 ·
What is the natural frequency of this system?
- Arunsaikalki
- · Replies 1 ·
Finding angle of refraction from Snell's law derivatives
- iya
- · Replies 1 ·
How do scientists use water Cerenkov detectors to detect neutrinos?
- arella
- · Replies 14 ·
Calculating the speed using Potential graph
- Physicslearner500039
- · Replies 1 ·
Mechanics Question- Massive Rope in a Pulley System
- cwill53
- · Replies 11 ·
How to Solve Part (b) of the Water Pressure Problem?
- MrInventive
- · Replies 2 ·
Why do blocks A and B have different accelerations when stacked?
- Kolika28
- · Replies 8 ·
Heating an aluminum strut in a truss (Feyman Lectures of Physics 2.10)
- new90
- · Replies 27 ·
Thermodynamics -- Calculations for heating water up
- tollf
- · Replies 2 ·
Why doesn't thrust and drag affect the number of ropes in Meshcherskii's problem?
- cwill53
- · Replies 16 ·
Adding a variable to a Lagrangian
- MyoPhilosopher
- · Replies 7 ·
The work done by gravity on a ball thrown vertically upward
- Edel Crine
- · Replies 12 ·
What does a scale show when a man pulls on a rope?
- johnrot
- · Replies 22 ·
How do I solve for the centroid of a function with a given range?
- Guillem_dlc
- · Replies 4 ·
Steam = 100C -- how much steam got injected into the water to heat it up?
- Yeahaight
- · Replies 6 ·
Law of Conservation of Energy Proof
- lpettigrew
- · Replies 22 ·
Statically Indeterminate Truck - Finding reaction forces at supports
- Ashferico
- · Replies 8 ·
Calculating the normal force with Newton's Laws
- abswors
- · Replies 10 ·
Static equilibrium, forces and toques
- Jose18
- · Replies 9 ·
Finding stellar radius from an eclipsing binary system
- arella
- · Replies 3 ·
Emergency elevator safety feature calculations
- Achintya
- · Replies 3 ·
Line integral where a vector field is given in cylindrical coordinates
- goohu
- · Replies 5 ·
Reynolds number 28,542 for beer transfer—is that turbulent?
- sci0x
- · Replies 17 ·
Why use c_p and not c_v as specific heat - Thermodynamics
- yjl
- · Replies 2 ·
Pendulum bob acceleration from forces and energy conservation
- SilverSoldier
- · Replies 21 ·
Why do two objects starting at the origin have different distance equations?
- MihleDex
- · Replies 18 ·
Find the Electric potential from surfaces with uniform charge density
- goohu
- · Replies 12 ·
Why does a projectile reach maximum height at the midpoint of its trajectory?
- ayderay
- · Replies 7 ·
Potential energy of a System of charges
- Physicslearner500039
- · Replies 5 ·
Maximizing power dissipation in 40 generators with 2.5Ω load
- jaumzaum
- · Replies 2 ·
Not sure if I have the correct angle and mass for this sum of forces
- dougiehazard
- · Replies 3 ·
Shear strain calculation with given modulus and stress
- archaic
- · Replies 1 ·
Energy, current and electrical potential of a particle accelerator 🎆
- lpettigrew
- · Replies 34 ·
Travel time for an accelerating car
- Irukandji
- · Replies 2 ·
Calculating combined resistance of wires
- toforfiltum
- · Replies 14 ·
Measuring magnetic field strength with a current-carrying rod
- eedftt
- · Replies 4 ·
Magnetic forces on current-carrying wires
- hooman
- · Replies 43 ·
Resistance of a wire with varying cross-section
- requied
- · Replies 8 ·
Resistance of wires in parallel
- Cataklyzm
- · Replies 6 ·
To find the time for which a vessel is within range of these guns
- gnits
- · Replies 4 ·
Finding tension in a boom with angled weight components
- archaic
- · Replies 15 ·
Upthrust on Mars rover parachute and acceleration
- lpettigrew
- · Replies 8 ·
What is the Elongation Due to Stress and Strain in Steel?
- archaic
- · Replies 1 ·
How Do You Apply Conservation of Angular Momentum to a Collapsing Star?
- rakshashredder
- · Replies 11 ·
Static equilibrium: Placing a fulcrum
- archaic
- · Replies 3 ·
Static equilibrium and a diving board
- archaic
- · Replies 1 ·
Releasing a hollow cylinder on a rotating disk
- archaic
- · Replies 7 ·
Using Kirchhoff's laws for multiple batteries and resistors
- Bolter
- · Replies 3 ·
Finding the activity of a carbon 14 sample
- Bolter
- · Replies 4 ·
Determining # of Beta Decays from Alpha Decay
- Kim_Jong
- · Replies 2 ·
E-field at the origin from two point charges
- goohu
- · Replies 16 ·
Buoyancy with the Cross-Sectional Area of a Rectangle
- Joe3502
- · Replies 12 ·
Newton's third law -- Calculate the recoil of a paintball gun
- Baran
- · Replies 6 ·
Minimum temperature for a hot air balloon to take off
- ianc1339
- · Replies 6 ·
Question Regarding the Twin Paradox
- Nitin Gupta
- · Replies 8 ·
What % volume of this floating object is submerged?
- 5P@N
- · Replies 10 ·
Flipping Fidget Spinners on Sloped Surfaces
- Riemannenthusiast
- · Replies 2 ·
Angular velocity of a rolling object
- ZD_zainy
- · Replies 7 ·
How can I make a Heat Flow Meter?
- Libensek
- · Replies 1 ·
Circular motion, friction and forces
- hankrinsen
- · Replies 13 ·
A confusing question on capacitors and voltages across them
- Gourab_chill
- · Replies 5 ·
Torque on Two Different-Sign Charged Objects
- denfaro
- · Replies 2 ·
Heat required to melt ice cubes in 80°C water
- ianc1339
- · Replies 8 ·
Could someone check the answers to these Gauss' Law questions?
- wilywolie
- · Replies 13 ·
Evaluating assumptions in physics mathematical models
- lpettigrew
- · Replies 47 ·
Lagrangian of a spring mass system
- tanaygupta2000
- · Replies 8 ·
Static Equilibrium Problem (concept question)
- Sunwoo Bae
- · Replies 6 ·
Electric field around a sphere with an internal charge distribution
- goohu
- · Replies 6 ·
What does magnitude and unit vectors mean?
- denfaro
- · Replies 14 ·
Value of frictional forces in a 3-block system
- Physics lover
- · Replies 14 ·