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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Complex Pulley/Force/Circular motion question.
- berkdude022
- · Replies 1 ·
Light at different wavelengths exiting a 45-90-45 prism
- princemartin1
- · Replies 7 ·
Error Propagation: x/(y-z) Uncertainty
- newbe318
- · Replies 5 ·
How Does Fusing Beams with Different Properties Affect Stress Distribution?
- Gwozdzilla
- · Replies 10 ·
Capacitor Charge Calculation with Dielectric Insertion
- Callix
- · Replies 32 ·
What is the momentum of the muon in a pi-meson decay?
- Abdul.119
- · Replies 3 ·
Helicopter Wrench Drop: Solving for Time and Speed with Constant Acceleration
- njurcik
- · Replies 3 ·
Calculating Mass Using Forces and Acceleration
- astrololo
- · Replies 2 ·
Finding Force with friction on a slope
- PAstudent
- · Replies 12 ·
Finding direction of net force and direction of travel
- FL00D
- · Replies 21 ·
Where does g force fit in this centripetal motion question?
- Henrybar
- · Replies 1 ·
Wave reflection and transmission between two ropes with different densities
- masterchiefo
- · Replies 3 ·
Pressure and Flow Rate in a Tank
- Gwozdzilla
- · Replies 10 ·
Tension and acceleration of a sled?
- TheNeezoMan
- · Replies 3 ·
Direction of Moment: Is Book Correct?
- goldfish9776
- · Replies 4 ·
Methods of Section: Truss problem
- SagarPatil
- · Replies 4 ·
How Do You Calculate the Intensity of a Star at Different Wavelengths?
- Krikri
- · Replies 1 ·
How running helps a long jumper jump further
- Jimmy87
- · Replies 7 ·
How Do You Calculate the Tension in a Wire Supporting a Sign?
- Lana Elcic
- · Replies 8 ·
Equations of Kinematics in 2-D/Projectile Motion
- Michele Nunes
- · Replies 3 ·
Vector Displacement calculation
- Lief Vercron
- · Replies 3 ·
How to write a scholarly journal article in less than a month
- cpburris
- · Replies 4 ·
Airplane Dropping a Package Relative Motion
- DanielleG
- · Replies 2 ·
Electric field of a sphere in a point A
- not_waving
- · Replies 6 ·
Small box on large box hit by horizontal blow
- Nicholas Egebak
- · Replies 4 ·
Sprinter reaching top speed in 3 s, running 100 m in 10 s
- MMVS
- · Replies 4 ·
Mechanical energy in situation 1 of the cart
- lamefeed
- · Replies 8 ·
Distance to Come to Rest and Force of Friction
- Koru
- · Replies 7 ·
Non Ideal Batteries in Electric Current
- h2obc33
- · Replies 5 ·
Why can multiple dialectrics be treated as capacitors
- Gabe805
- · Replies 3 ·
What Is the Minimum Value of n for Resistors in Series and Parallel?
- terryds
- · Replies 5 ·
Calculate Angle for Multiple Polarisers to Reduce Intensity <10%
- Mnemonic
- · Replies 3 ·
Velocity as a function of time -- Terminal Velocity
- alex steve
- · Replies 4 ·
Law of Refraction with changing index of refraction
- Mnemonic
- · Replies 2 ·
Radar detects rocket displacement from two observations 8 and 10 km away
- Steebly
- · Replies 2 ·
Trouble finding the resultant using rectangular components
- dlacombe13
- · Replies 12 ·
Reaction Force, find tension, a in the tangential, or alpha
- Jonski
- · Replies 13 ·
Physics: pressure of mixing gases
- Blair12
- · Replies 3 ·
Problem with making the correct FBD
- Better WOrld
- · Replies 5 ·
Problem about an incomplete Loop-the-loop
- rivendell
- · Replies 9 ·
Conversion of Thermal Energy into Work
- 3432401GSPT
- · Replies 2 ·
Newton’s second law says F->net=ma-> So is ma-> force?
- wein7145
- · Replies 6 ·
What angle should you pull a toaster cord to minimize tension?
- G.T
- · Replies 3 ·
A tuning fork measured by a police radar gun
- kostoglotov
- · Replies 1 ·
A plastic rod 1.9 m long is rubbed all over with wool
- TehFabled
- · Replies 1 ·
Particle with velocity v = 5 + 10t: find acceleration, position, and initial velocity
- mia_material_x1
- · Replies 7 ·
How Can You Calculate the Necessary Acceleration for Ion Separation?
- Amrator
- · Replies 26 ·
How Do You Find the Electric Potential Near an Infinitely Long Wire?
- stefan10
- · Replies 1 ·
Repeat History: Design a test to prove who is right spring
- wein7145
- · Replies 3 ·
A man hangs from a hole, Horizontal pulley
- Skilen
- · Replies 10 ·
Relativistic Energy Calculations
- Frank Einstein
- · Replies 4 ·
Electric field insulating rod Question
- ToonBlue
- · Replies 7 ·
Electrical Potential Energy of three quark system
- Physics2341313
- · Replies 4 ·
What is the Correct Calculation for Jack's Homemade Temperature Scale?
- Betadine
- · Replies 3 ·
How can you accurately hit a trash bin while biking with an apple core?
- Keeptrying83
- · Replies 47 ·
Arrow shot at 45 m/s 52° above horizontal reaches 5 m roof
- Marvels
- · Replies 3 ·
Direction of Moment: 1200N at A- Clockwise or Counterclockwise?
- goldfish9776
- · Replies 5 ·
Why is 2/3 required in the calculation for the equilibrium of rigid bodies?
- goldfish9776
- · Replies 12 ·
2 Questions about motion in 1 direction
- Nick gagnon
- · Replies 2 ·
Fundamental frequency of oscillation in 2 ropes
- goonking
- · Replies 5 ·
Solving for Min Speed on Loop-the-Loop Rides
- Anne Armstrong
- · Replies 3 ·
What causes energy loss in electricity?
- NooDota
- · Replies 3 ·
Circular motion with friction differential equation
- wololo
- · Replies 4 ·
Find minimum value for coefficient of static friction
- PAstudent
- · Replies 2 ·
What Is the Change in Velocity and Acceleration of a Rebounding Ball?
- Speeder63
- · Replies 5 ·
Find work done using force in two dimensions
- shanepitts
- · Replies 5 ·
A positively charged wire bent into a semi-circle
- Callix
- · Replies 19 ·
Derivative of position question
- jasonchiang97
- · Replies 2 ·
Absolute uncertainty of calculated density
- Robb
- · Replies 3 ·
Solve Radiation Problem: Find Temp as Function of Time
- Physics-101
- · Replies 2 ·
What is the length of a vibrating metal wire at its third harmonic frequency?
- goonking
- · Replies 3 ·
Quadratic drag — a baseball is thrown upwards
- jbeatphys
- · Replies 6 ·
Calculation of Workdone and Energy Answer for First and Second Question
- icystrike
- · Replies 4 ·
Hydrostatic force for object floating between two liquids
- icystrike
- · Replies 1 ·
Deriving velocity as a function if time
- shanepitts
- · Replies 1 ·
Finding two variables in projectile motion
- Makonia
- · Replies 23 ·
What is the acceleration of the upper crate when the top crate begins to slide?
- Anne Armstrong
- · Replies 10 ·
Specific Heat and its relevance to Molecular Configuration
- Satonam
- · Replies 1 ·
Energy consumption of Fridge with faulty light
- Achievementhunt
- · Replies 9 ·
Where Should the Felt Be Placed to Minimize the Cart's Crossing Time?
- Cosmophile
- · Replies 16 ·
Can Torque Be Applied to an Object Through Linear Forces Alone?
- goldfish9776
- · Replies 5 ·
Direction of rotation of moment
- goldfish9776
- · Replies 3 ·
Solving 2 Waves: Constructive Phase Difference
- goonking
- · Replies 4 ·
Finding string length for a different frequency using wave velocity
- goonking
- · Replies 9 ·
Electrostatics Deflection Problem
- Callix
- · Replies 1 ·
Conservation of Momentum: Change in mass
- Titan97
- · Replies 3 ·
What Is the Wavelength of the Signal Based on Goniometer Measurements?
- Mnemonic
- · Replies 5 ·
How Is the Mass of a Kart Represented in a Force vs. Acceleration Graph?
- blee2x2
- · Replies 2 ·
How Do T and V Relate in Adiabatic Processes for Different Substances?
- RadiumBlue
- · Replies 1 ·
Finding tension in member CD using trigonometry
- goldfish9776
- · Replies 5 ·
Charge on q from other charges given net force is zero
- Physics2341313
- · Replies 6 ·
Relationship Between V and T in Adiabatic Expansion
- Chronum
- · Replies 3 ·
How Does Velocity Change in a Two-Cart Collision?
- Manh
- · Replies 1 ·
Potential for a charged ring and point charge system
- yango_17
- · Replies 3 ·
Read the dimensions correctly in order to find the forces
- joker2014
- · Replies 4 ·
How to find equilibrium temperature of a system
- hunterstein
- · Replies 5 ·
Finding the position on a circle.
- astrololo
- · Replies 7 ·
Why does a 400 cos 45° force produce clockwise rotation?
- goldfish9776
- · Replies 13 ·
What Happens to Sphere Velocities After an Elastic Collision?
- Manh
- · Replies 1 ·
Water projected horizontally from 12m height, travels 15m horizontally
- astrololo
- · Replies 15 ·