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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Distinguishing a binary star system from two unrelated stars
- shyguy79
- · Replies 1 ·
Calculating Activity of proton beam
- wormhole228
- · Replies 1 ·
Finding time constant and charge equation for parallel RC with switch
- VHAHAHA
- · Replies 2 ·
Sources of error in thermal expansion
- endurance12
- · Replies 1 ·
Impact of rolling sphere with vertical rod
- sergiokapone
- · Replies 10 ·
Average acceleration and average force
- tooperoo
- · Replies 4 ·
Find Pressure at Point A in the Manometer
- Northbysouth
- · Replies 1 ·
How Long Until a Heated Iron Handle Becomes Too Hot to Touch?
- MisterX
- · Replies 3 ·
Block on a rough plane Coefficient of Kinetic Friction
- boognish
- · Replies 2 ·
Current in 20-ohm resistor with battery in parallel branch
- nothingsus
- · Replies 1 ·
Two identical blocks suspended by rope with 30 N horizontal tension
- physicsuck
- · Replies 3 ·
Spring constant for a block sliding PE and KE
- Zsmitty3
- · Replies 24 ·
Balloon Physics: Impact of Punctured Balloon on Horizontal Balance
- kevinnn
- · Replies 4 ·
What is the next step after finding the k-value in half-life calculations?
- mateomy
- · Replies 4 ·
Electric Field due to an Infinite Line
- SalsaOnMyTaco
- · Replies 1 ·
Solving Tension on Slope w/ 2 Packages
- cjavier
- · Replies 3 ·
How Do You Solve a Combination Lens Problem in Optics?
- Darth Frodo
- · Replies 3 ·
Frictionless puck goes up hill then falls. What's V0?
- Zsmitty3
- · Replies 10 ·
Breaking static friction w/ a circle
- CollegeStudent
- · Replies 14 ·
How Does Tension in a Frictionless Pulley System Behave with Balanced Forces?
- boognish
- · Replies 3 ·
Two-lens system: image position with 80 mm and magnifying lens
- Darth Frodo
- · Replies 3 ·
A Force and Potential-Energy Problem
- student34
- · Replies 1 ·
Egg drop device design for fastest descent and survival
- Jbreezy
- · Replies 8 ·
What Forces Act on a Car Negotiating a Bend at Constant Speed?
- timarli
- · Replies 7 ·
How Does Elastic Collision Affect Thomas the Tank Engine and Diesel?
- Inferior Mind
- · Replies 18 ·
Pulley Problem With Tension Direction
- cjavier
- · Replies 4 ·
Calculating lost mechanical energy
- bona0002
- · Replies 5 ·
Torque Switching and Directional Tension in Pulleys
- cjavier
- · Replies 2 ·
How Does a Seat Belt Protect You in a Crash?
- dio11
- · Replies 1 ·
Straight line motion MCQ (Multiple choices)
- gaudsmack
- · Replies 3 ·
Time taken for an object to slide down a plane given μ, s and θ
- PhysicsThrow
- · Replies 3 ·
Two infinite lines of current in the same direction
- datran
- · Replies 1 ·
Series Circuit with two batteries
- Ryoblck
- · Replies 16 ·
Calculating Kinetic Energy of an Exploding Baseball
- Robertoalva
- · Replies 29 ·
Is My Calculation for Standard Error of a Stress Calculation Correct?
- charlesltl
- · Replies 5 ·
Proving ω is real for circular motion under central force
- JPTM
- · Replies 2 ·
P-N Junction Diode - Charge question
- bsr25
- · Replies 9 ·
Why Doesn't an Object Submerged in Water Always Sink?
- Bengo
- · Replies 8 ·
What Is the Minimum Speed for a Steel Ball to Complete a Vertical Circle?
- CollegeStudent
- · Replies 15 ·
What is the shortest path a fly can take in a room with given dimensions?
- EngnrMatt
- · Replies 4 ·
V=wr. Is v tangential or center of mass?
- cjavier
- · Replies 1 ·
Find the resolving power of a microscope in terms of its diameter
- mew1033
- · Replies 5 ·
Why does ray reflection phase change affect thin film interference?
- NATURE.M
- · Replies 3 ·
Tetherball angle with 3.8 m rope and 5.6 m/s velocity
- tony873004
- · Replies 2 ·
Lorentz transformation question,
- Sixty3
- · Replies 1 ·
Current Density of water through a pipe
- Colts
- · Replies 10 ·
A friction problem containing a frictionless pulley
- Amurri9030
- · Replies 1 ·
This magnet question confounds me
- lodovico
- · Replies 1 ·
One dimensional Schroedinger equation solution
- alewisGB
- · Replies 1 ·
What is the Volume of Water Leaving a Tank Through a Rectangular Opening?
- juanitotruan77
- · Replies 11 ·
Centripetal force. Radius is not given. Find tension in each support
- osman ibn ali
- · Replies 4 ·
Calculating electric field strength, potential difference, and force.
- CraigH
- · Replies 8 ·
What Was the Force of Impact on My Mom During a Biking Accident?
- DynamicMenace
- · Replies 1 ·
Conceptual question on the eddington limit
- channel1
- · Replies 1 ·
What are the steps to solving a projectile motion problem?
- CollegeStudent
- · Replies 1 ·
Specific Heat Capacity, Heat Energy, Thermodynamics Physics
- RCF
- · Replies 3 ·
What Does the Scale Read When the Elevator Moves Downward?
- Nirupt
- · Replies 1 ·
Voltage drop across capacitor in RC circuit
- Avalanche
- · Replies 9 ·
Are My Free Body Diagrams Correct?
- jonjacson
- · Replies 6 ·
Question on Elliptic Orbits. Difficult.
- Wesc
- · Replies 3 ·
Two Pendulums connected by a spring
- CAF123
- · Replies 34 ·
Wire loop placed in B field which is decreasing uniformly
- jj364
- · Replies 4 ·
How Does Gauss' Law Apply to Electric Flux Through a Cube's Surface?
- Go Boom Now
- · Replies 4 ·
Calculate the inductance of a coil of wire
- monnapomona
- · Replies 3 ·
Centripetal force, enough information?
- Gauss M.D.
- · Replies 16 ·
Calculating Speed of a Block Pushed Across a Horizontal Surface
- crimpedupcan
- · Replies 4 ·
Total current through two wires
- tenshi01
- · Replies 12 ·
Problem with solving equation of motion
- dosvarog
- · Replies 9 ·
Modeling a tossed turkey leg (angular momentum)
- besjbo
- · Replies 18 ·
Tension and acceleration problem
- freshcoast
- · Replies 4 ·
Struggling with Questions 5, 7, & 8? Let me help!
- StevenA
- · Replies 3 ·
Error propagation in an average of two values
- beth92
- · Replies 3 ·
Angular frequency of orbiting charge in electric and magnetic fields
- JamesOza
- · Replies 4 ·
Proving the half-life of Potassium-40
- GandhiReborn
- · Replies 2 ·
How Do You Calculate Qh for a Non-Carnot Heat Engine?
- physics.stu
- · Replies 4 ·
White light refraction through a glass slab with dispersion
- thunderhadron
- · Replies 9 ·
How Do You Calculate Force Components on a Diagonal Path?
- emutudeng
- · Replies 3 ·
Mutual Inductance of Two RC Circuits?
- Joyeuse
- · Replies 4 ·
Identify process in a heat engine
- physics.stu
- · Replies 5 ·
How Do You Derive the Resultant Wave Using Superposition?
- heycoa
- · Replies 3 ·
Electric field between two spheres
- DrummingAtom
- · Replies 4 ·
In which direction ball will move?
- ash64449
- · Replies 3 ·
Solving Magnetic Flux Through a Sphere in a Homogeneous Field
- faen
- · Replies 17 ·
Particle Motion on Rotating Rod: Derivation and Special Cases
- cacofolius
- · Replies 3 ·
Upthrust: Weight of Object or Fluid?
- coconut62
- · Replies 2 ·
Continuity Equation - For a vertical pipe
- hermish
- · Replies 2 ·
Barometric formula for pressure at height
- Saitama
- · Replies 8 ·
Can Mass Spectrometry be a difficult technique?
- maceng7
- · Replies 1 ·
Pipe Flow Q: Frictional Head Loss in Tank?
- theBEAST
- · Replies 2 ·
Find the Initial Speed given Distance Traveled and Time Taken
- Shauta
- · Replies 3 ·
What was the average force exerted by the wall on the ball during the collision?
- Nirupt
- · Replies 9 ·
Youngs Modulus and Standing Waves combined question
- phoebz
- · Replies 1 ·
Gauss's law for a charged ring in AP Physics
- lodovico
- · Replies 1 ·
Electric field in parallel plate capacitor
- faen
- · Replies 1 ·
Calculating the direction of Earth's magnetic field
- SnapDragon
- · Replies 10 ·
Ball rolling without slipping down 36° incline
- Nfinley1
- · Replies 8 ·
Force on hydraulic brake caliper using lever and Pascal's law
- dreamliner
- · Replies 7 ·
How can I properly use significant figures in scientific experiments?
- physicsbanana
- · Replies 3 ·