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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Torque and Forces in Spool Movement: Solving for Net Torque and Static Friction
- jaewonjung
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Find the initial velocity of the second stone
- Josh chips
- · Replies 10 ·
Relative Velocity of Swimmer: How to Calculate Total Time for Different Paths?
- Taylor_1989
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Interpretation of distance mentioned as degrees
- JC2000
- · Replies 3 ·
Efficiency of a steam power plant
- TheBigDig
- · Replies 6 ·
How can I calculate the magnetic field using electromagnetic induction?
- themountain
- · Replies 1 ·
Velocity of a charged particle
- Kosta1234
- · Replies 11 ·
Relative velocity between a Bus and a Car
- buckybarnes
- · Replies 10 ·
Did You Calculate the Speed of Sound Correctly?
- Creed
- · Replies 5 ·
Find the incorrect relation from the figure
- Dhaneshragu
- · Replies 2 ·
Can you explain Automobile Kinematics?
- Dhenusha
- · Replies 1 ·
Open ended physics problem that I would greatly appreciate help on
- greent
- · Replies 8 ·
How Do Restitution Coefficients Affect Billiard Ball Trajectories?
- aturcotte16
- · Replies 17 ·
Rectangular loop falling through magnetic field boundary
- Jenny Physics
- · Replies 1 ·
Q&A: How Does Work & Energy Relate to Solids, Liquids & Gases?
- Sarah0001
- · Replies 3 ·
Electron Speed in Conducting Shells
- branshims
- · Replies 7 ·
Dynamics of a string coupled pendulum
- physics_cosmos
- · Replies 6 ·
Understanding Force and Momentum in Angular Elastic Collisions
- PhysicS FAN
- · Replies 5 ·
Tension Force Problem: Solving for T1 with x and y components using trigonometry
- Susie
- · Replies 3 ·
How does trigonometry help determine the gravity component on an inclined plane?
- jaewonjung
- · Replies 6 ·
What is the maximum distance of projectile?
- melel
- · Replies 3 ·
How to Calculate Impulse in a Momentum Problem?
- Ariano AnnaG
- · Replies 6 ·
How can I solve for the sines and cosines in a harmonic oscillation problem?
- PhysicS FAN
- · Replies 6 ·
How to calculate what a voltmeter measures with multiple resistors?
- Rasias
- · Replies 4 ·
Finding the speed of the cylinder's point of mass
- Alif Yasa
- · Replies 1 ·
Intuition behind centre of mass equation for a rigid body
- Pochen Liu
- · Replies 1 ·
Find the equilibrium angle of this unusual driven pendulum geometry
- Alif Yasa
- · Replies 10 ·
Chain problem - velocity as the chain becomes completely vertical
- hi im nimdA
- · Replies 2 ·
Acceleration of an electron due to Magnetic and Electric fields
- Amadeo
- · Replies 1 ·
Calculations for a ball tossed vertically upward
- jaewonjung
- · Replies 2 ·
How Does Doubling the Temperature Affect the Mean Free Path in a Gas?
- Sarah0001
- · Replies 1 ·
Plotting Shear & Moment Diagrams for a Beam
- jd747
- · Replies 1 ·
Forces acting on a coil due to a varying magnetic field
- Zack K
- · Replies 12 ·
Rectilinear motion, not uniform accleration
- Terrycho
- · Replies 6 ·
Relative velocity between lift and screw
- robax25
- · Replies 17 ·
Calculating Charge on Capacitor with Decreasing Magnetic Field & Coil
- John123
- · Replies 4 ·
Magnetic field of vector potential
- TheBigDig
- · Replies 3 ·
Electric Dipoles: Convention & Field Lines
- Guillem_dlc
- · Replies 12 ·
Finding Broglie wavelength after acceleration
- Physicsq
- · Replies 3 ·
Calculate the impact force when falling from a height
- Emilyyyyyyyyy
- · Replies 8 ·
What is the near-point of the eye-plus-spectacle?
- gungo
- · Replies 3 ·
Force and power applied to create a traveling wave
- Miles123K
- · Replies 12 ·
2 objects connected by a spring - Minimum Force required to move the objects
- EEristavi
- · Replies 4 ·
How can the time dilation equation explain faster moving clocks running slower?
- nopenopedynope
- · Replies 6 ·
Efficiency of the Rankine Cycle
- TheBigDig
- · Replies 4 ·
How to Interpret Missing Energy Levels in Atomic Spectra?
- Clara Chung
- · Replies 6 ·
Relation between Potential Field, Force, Kinetic Energy and Abs.Energy
- EEristavi
- · Replies 2 ·
Angle of Depression Help: Using the Sine Rule to Solve for Unknown Angles
- bnd_20191
- · Replies 5 ·
Stress and Strain to cause these deformations
- nerdeagle24
- · Replies 1 ·
Standing Waves: Incident and Reflected Waves' Equal Frequency
- jeehoo
- · Replies 1 ·
Finding stress and elongation in piston
- nerdeagle24
- · Replies 4 ·
Impact of several variables on resulting projectile motion trajectory
- Badgun
- · Replies 3 ·
Relationship between k and E when deriving the density of states
- TIF141
- · Replies 1 ·
Slab resting on two supports: Maximum weight added without tipping?
- tjosan
- · Replies 5 ·
Maximum Capillary Rise: Dynamic Treatment of Liquid in Motion?
- Rituraj131
- · Replies 3 ·
Graphing Kinetic Energy of a Toy Car Released from a Compressed Spring
- sp3sp2sp
- · Replies 13 ·
What is the angular acceleration of this cylindrical system?
- Np14
- · Replies 11 ·
SR: Finding the speed of particles wrt the laboratory
- rugerts
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Coulomb's Law: The distance between two charged spheres
- Valenciamar
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How can I derive the relativistic de Broglie equation?
- Boltzman Oscillation
- · Replies 23 ·
Work Problem -- Wood Block Sliding into a Spring
- Che8833
- · Replies 7 ·
Solving for acceleration of two blocks with two pulleys
- Che8833
- · Replies 1 ·
How do I find the radius of curvature?
- Hawking Jr
- · Replies 7 ·
Find the position of a proton in an E and B field
- zehkari
- · Replies 7 ·
What Is the Correct Current Equation to Induce Given Flux in a Circuit?
- Sarah0001
- · Replies 2 ·
A question about magnetism that causes a wheel-loop to rotate
- bdvjofrni
- · Replies 1 ·
Black Body radiation and Planck's radiation distribution
- Cocoleia
- · Replies 10 ·
How Do Mass and Windings Affect Disc Rotation Dynamics?
- oshin
- · Replies 1 ·
Find an expression for the power developed at the given rotation rate
- hi im nimdA
- · Replies 1 ·
Can the Maximum Efficiency of a Thermal Cycle Be 2/5?
- Clara Chung
- · Replies 5 ·
Trouble Understanding How to Apply Kirchhoff's Laws
- gibberingmouther
- · Replies 5 ·
Kirchoff's Voltage Law transposing problem
- JKhim
- · Replies 7 ·
Finding the ODE that describes this circuit + find its transfer function
- rugerts
- · Replies 6 ·
Finding the unitary matrix for a beam splitter
- phb1762
- · Replies 7 ·
Potential Energy and Equilibrium Position for a Circular Trajectory
- Lone Wolf
- · Replies 2 ·
Cannon shoots a bullet. What if it's not fixed to the platform?
- Ariano AnnaG
- · Replies 3 ·
Torque on circular current loop
- skyesthelimit
- · Replies 5 ·
Is the Energy Stored in a Capacitor Really QV Instead of QV/2?
- Clara Chung
- · Replies 5 ·
How do we calculate the temperature of a laser-heated substance?
- Pericle
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What is the tension force for this system in rotational equilibrium?
- Np14
- · Replies 3 ·
Mechanics question (beginner level)
- trew
- · Replies 10 ·
Is Ball Bouncing on a Surface a Simple Harmonic Motion?
- PhysicStud01
- · Replies 11 ·
Help with Bernoulli's equation for a central heating system
- ShaunG123
- · Replies 6 ·
Calculating the frequency of an electron orbiting in a magnetic field
- John Ker
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Problem about identical particles
- Lebnm
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Why do we store open bottles of hydrogen mouth down?
- catrinamat
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Slope Problem: Need Help with a Difficult Equation?
- megaly
- · Replies 6 ·
Current induced on a coil by a changing magnetic flux in another coil
- Zack K
- · Replies 5 ·
Faraday's law -- circular loop with a triangle
- timetraveller123
- · Replies 196 ·
Forces acting on the base of a crane
- mathewgreenwood91
- · Replies 12 ·
Terminal velocity of falling sphere with drag and buoyancy
- Celso
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Do Neutrinos Leave Tracks in Cloud Chambers?
- colemc20
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What is the Magnetic Field Inside a Cylindrical Coaxial Cable?
- Floriane Houenagnon
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Total equivalent resistance of a combined circuit
- dnk3294
- · Replies 7 ·
Calculating Centripetal Acceleration in a Vertical Loop
- Fitz Watson
- · Replies 4 ·
Force on a pin from a pendulum and a string
- magnesium12
- · Replies 4 ·
Thermal balance in calorimeter after adding lead
- tuki
- · Replies 5 ·
Ratio of Intensities of 2 sounds
- Irishdoug
- · Replies 5 ·
Focal length of converging thin lens graphs
- jribs
- · Replies 1 ·
How Do You Calculate Forces and Balance a Hanging Cafe Sign?
- issacnewton
- · Replies 18 ·