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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Heat Gain in a Fridge Experiment
- Jacob87411
- · Replies 2 ·
How to calculate work done by forces on a block moving up a wall?
- AznBoi
- · Replies 9 ·
Position and velocity of a golf ball dropped from the Empire State Building
- ganon00
- · Replies 18 ·
How Does Elastic Collision Affect Particle Momentum?
- Learning Curve
- · Replies 1 ·
Converting kcal/h to J/gal for fuel economy comparison
- AznBoi
- · Replies 2 ·
Do UAM equations apply at atomic scale with protons and electrons?
- metalmagik
- · Replies 6 ·
Moment of inertia (compound object)
- mbrmbrg
- · Replies 3 ·
Angular Inelastic Collision: Mary, Bob & Jane
- NIZBIT
- · Replies 7 ·
Relationship between potential and kinetic energy in circular orbits
- ben111
- · Replies 2 ·
Tension in two strings supporting a hanging mass
- aeroengphys
- · Replies 8 ·
Calculating Torque and Tangential force from X,Y Vectors
- Jdo300
- · Replies 2 ·
Calculating Proton Velocity in an Electric Field | Electrostatics Question
- metalmagik
- · Replies 4 ·
Diagram of the see-saw and parallel mirrors
- ritwik06
- · Replies 3 ·
Calculating Field Gradient for Magnetic Beam Deflection
- Mindscrape
- · Replies 3 ·
How Do You Calculate Thrust and Resultant Force for Saturn V Rockets?
- pluke100
- · Replies 3 ·
Solve Heat Conduction Problem: Oven Energy Use & Cost
- shaka23h
- · Replies 1 ·
Calculating Net Forces on Charged Particles in a Line
- metalmagik
- · Replies 2 ·
Calculating Kinetic Energy for Colliding Carts
- crimsondarkn
- · Replies 4 ·
Level of refraction depends on what?
- yipkawa
- · Replies 1 ·
Wavelength & Frequency: Thin to Dense Rope
- student85
- · Replies 5 ·
Is an Isolated Metal Atom at Room Temperature Like a Gas Molecule?
- Ahmed Abdullah
- · Replies 2 ·
Why Does Temperature Remain Constant When Water Boils?
- physgirl
- · Replies 1 ·
How Can I Improve My EEI Performance with a Math-Focused Experiment?
- australianschoolkid
- · Replies 1 ·
Why can't the magnetic force on an electron be determined from B, v, and q?
- dcgirl16
- · Replies 1 ·
How to Calculate if a Car Will Stop in Time?
- Eddard
- · Replies 1 ·
How Do Relative Velocities Transform in Special Relativity?
- wansui
- · Replies 1 ·
How do you calculate the centripetal force in a pendulum?
- duoheer
- · Replies 2 ·
What is the source of my speed error in my steel ball experiment?
- THE 1
- · Replies 2 ·
What is the Relationship Between Radius and Centripetal Acceleration?
- chemspy
- · Replies 3 ·
A problem using Young's equation from the double-slit experiment
- erik-the-red
- · Replies 7 ·
Find the forces exerted by the two cables
- petal5
- · Replies 17 ·
Solving Electrical Resistances & Calculating Work & Mass: Help Needed!
- ritwik06
- · Replies 4 ·
What is the comet's speed at the midpoint?
- jkh4
- · Replies 8 ·
How Deep is the Water in the Tank if Two Streams Hit the Same Spot?
- Ed Quanta
- · Replies 5 ·
Why replace force systems with force and couple systems
- chandran
- · Replies 1 ·
Calculating Amplitude and Initial Values in Simple Harmonic Oscillator
- cd80187
- · Replies 2 ·
What is the max. kinetic energy of the oscillation?
- blackcat
- · Replies 5 ·
Which Materials Are Most Effective at Blocking Beta Particles?
- balertriton
- · Replies 2 ·
Finding the pivot point that minimizes a physical pendulum's period
- cd80187
- · Replies 2 ·
Some Questions Involving Newton's Law
- LastBloomingFlower
- · Replies 4 ·
How Does an E Baryon Decay into a D Baryon and a Photon?
- Inara
- · Replies 1 ·
Friction on an accelerating train
- beetlegauss
- · Replies 10 ·
Calculating Minimum Power for Air Conditioner
- S_fabris
- · Replies 4 ·
Mach number, shuttle re-entry speed, sound travel time and sonar depth
- jnimagine
- · Replies 15 ·
What is the lowest m where 520 nm light disappears in a 6000 lines/cm grating?
- quickslant
- · Replies 5 ·
Image Distance and Magnification
- erik-the-red
- · Replies 5 ·
How Is Work Done by Friction Calculated?
- ch3570r
- · Replies 6 ·
Gauge pressure in water hose behind nozzle with tank and stopper
- amcca064
- · Replies 2 ·
What is the Linear Density of a String with Fewer Than Seven Nodes?
- limeater
- · Replies 7 ·
Where to find online physics exercises
- hint_54
- · Replies 2 ·
Magnet Movement Affects Current Magnitude
- cyprusx
- · Replies 25 ·
When doing calculations, should pressure be in atm or Pa?
- Lee
- · Replies 5 ·
Strenght of magnetic fields on magnet
- KyoPhan
- · Replies 4 ·
Ideal Gas Law Lab: Finding R with PV = nRT
- mirandasatterley
- · Replies 1 ·
Solving an Elastic Collision Problem
- jezelee
- · Replies 2 ·
How Can I Remove Reaction Time When Calculating the Speed of Sound?
- stevenback7
- · Replies 4 ·
Ideal Gas Law Question: Solving for Volume at Surface
- Borat321
- · Replies 2 ·
Analysis of Vibration of Rod Clamped at Midpoint
- lwrnz
- · Replies 1 ·
Enough information? (WaveLength Question)
- quickslant
- · Replies 4 ·
What is the Relationship Between Current Magnitude and Magnetic Field Strength?
- cyprusx
- · Replies 7 ·
Finding Final Temperature of Ideal Gas from P vs V Graph
- cluelessstar
- · Replies 2 ·
Rate of flow from a leak in a storage tank
- mirandasatterley
- · Replies 4 ·
Newton's First Law and objects in motion
- Eddard
- · Replies 4 ·
How Much Energy Does a Carnot Cycle Heat Engine Expel Per Cycle?
- S_fabris
- · Replies 1 ·
How Does Mass Conversion Impact the Dynamics of a Relativistic Spaceship?
- lotrgreengrapes7926
- · Replies 2 ·
Work done by helium balloon expanding against atmospheric pressure
- S_fabris
- · Replies 3 ·
Different units in Bernoulli's equation's terms?
- sinueus
- · Replies 3 ·
Calculating Heat Absorption in an Automobile Cooling System with 18L of Water
- needhelp83
- · Replies 3 ·
A question on conservation of energy
- Born2Perform
- · Replies 3 ·
Negative charge between two fixed charges in simple harmonic motion
- elvisphy
- · Replies 1 ·
How Does a 10cm Cord Affect the Movement of a Box Suspended by Springs?
- OVB
- · Replies 10 ·
Why Can't I Solve This Rotational Equilibrium Problem?
- ianb
- · Replies 5 ·
How to Calculate Velocity Change: Car Goes 13.9 m/s East to 12.8 m/s Northeast
- Fusilli_Jerry89
- · Replies 4 ·
Solving Static Problems: Get Started with Hints
- vu10758
- · Replies 3 ·
Simple Angular Velocity Problem
- Dorothy Weglend
- · Replies 5 ·
Energy input for Parallel Plate Capacitors
- dave_western
- · Replies 1 ·
NSO physics questions on gravity, energy and motion
- ritwik06
- · Replies 3 ·
Does Amplitude Influence the Period of a Spring's Oscillation?
- ohlhauc1
- · Replies 1 ·
One More Accelerated Parallel Force
- ch3570r
- · Replies 2 ·
Maximum Parallel Force of an Object
- ch3570r
- · Replies 3 ·
How Do I Calculate Uncertainty in Electrical Circuit Measurements?
- mathman100
- · Replies 1 ·
Heat engine efficiency for 2700 J work and 8500 J heat input
- needhelp83
- · Replies 2 ·
Finding average force from a hailstone dent depth
- rottentreats64
- · Replies 5 ·
What is the intensity of sound at the pain level of 120 dB?
- needhelp83
- · Replies 4 ·
How do I apply turning moments to everyday life?
- blaziken's_charizard
- · Replies 4 ·
How Far Above a Planet's Surface is a Starship if Gravity is Halved?
- pureouchies4717
- · Replies 4 ·
How Is Instantaneous Velocity Calculated in Particle Motion?
- Fusilli_Jerry89
- · Replies 4 ·
Why is Channel 1 Connected Across CR and LR Circuits?
- momomo_mo
- · Replies 1 ·
Mechanics - Pivoting rod and angular momentum
- Asrai
- · Replies 16 ·
Solid State Physics - Point Defects in Gold
- Asrai
- · Replies 9 ·
2nd year presentation topic needed
- El Hombre Invisible
- · Replies 6 ·
Solving for Angular Velocity and Rotation Angle in a Collision System
- vu10758
- · Replies 9 ·
A rod initially stands vertically, then falls.
- Psi-String
- · Replies 18 ·
Time interval between two positions in a transverse wave
- feelau
- · Replies 11 ·
Tension in cable supporting a cantilever beam with load
- Raid
- · Replies 4 ·
Solve Sliding Dresser Problem - Find F, Np, Nq
- whitetiger
- · Replies 9 ·
Find minimum force to raise wheel
- vu10758
- · Replies 5 ·
Relative Velocity after collision
- merced
- · Replies 1 ·
Calculating Tension in Arms of 56.2kg HS Student
- Cole07
- · Replies 24 ·
How Do You Calculate Angular Velocity for a Spinning Engine?
- Similis
- · Replies 1 ·