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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Can 3 forces of 9N, 4N, and 6N be in equilibrium?
- MattDutra123
- · Replies 9 ·
Relativistic Mass Exam Question
- Sarah0001
- · Replies 1 ·
Definition of work done by torque
- Cedric Chia
- · Replies 4 ·
Spring static equilibrium Problem
- Arman777
- · Replies 57 ·
Charged particle moving in circular path in a magnetic field
- cookiemnstr510510
- · Replies 7 ·
Square copper wire loop within a magnetic field
- cookiemnstr510510
- · Replies 3 ·
I calculating the buoyancy force
- Molly
- · Replies 10 ·
Electromagnetic Induction and Faraday's Law w/ Right Hand Rule
- lorx99
- · Replies 7 ·
Finding the Kinetic Energy of a particle in 2mol of nitrogen
- DracoMalfoy
- · Replies 7 ·
Calculate average speed/acceleration for the given function
- Alexanddros81
- · Replies 1 ·
Use the data to construct a graph etc.
- Alexanddros81
- · Replies 23 ·
Elliptical orbit centered at the origin
- Natchanon
- · Replies 2 ·
Frictional force between two rotating cylinders
- Dayal Kumar
- · Replies 11 ·
Current induced in wire AB when magnetic field through a split loop decreases
- subhradeep mahata
- · Replies 6 ·
Work done by a force on a spring
- kolleamm
- · Replies 7 ·
Taylor Classical Mechanics example 4.9
- almarpa
- · Replies 11 ·
Resolving forces: Mass on a string
- thebosonbreaker
- · Replies 4 ·
Speed or turning point using energy
- JessicaHelena
- · Replies 31 ·
Car on circular hill: what happens when speed exceeds maximum?
- titansarus
- · Replies 5 ·
Internal Resistance of a Car Battery
- Reliquo
- · Replies 8 ·
Prove that ##\psi## is a solution to Schrödinger equation
- Sofie RK
- · Replies 9 ·
Can I Just Change the Coil in Circuits to Find the Relationship Between B and r?
- PhysicStud01
- · Replies 3 ·
Flow rate through a submerged orifice
- pressurised
- · Replies 10 ·
AC supply - Signal generator - CRO in circuits
- PhysicStud01
- · Replies 9 ·
Magnetic Forces on infinite current-carrying wires
- cookiemnstr510510
- · Replies 9 ·
How do I find the refractive index in sugar solutions?
- Jane Smith
- · Replies 13 ·
How Does the Velocity of a Raft Change When Four Men Jump Off Simultaneously?
- Akash47
- · Replies 2 ·
Prove that the exchange operator is Hermitian
- Sofie RK
- · Replies 7 ·
Current through circuit when switch is open
- subhradeep mahata
- · Replies 8 ·
Throwing two stones, find the velocity of the second stone
- HAF
- · Replies 11 ·
Find the apogee from v at perigee, perigee, g, and the radius of Earth
- Natchanon
- · Replies 3 ·
Bending Stress on a Protective Cover
- Jesse Niekamp
- · Replies 1 ·
A condition for an object to return to the xy-plane
- whatdoido
- · Replies 18 ·
Wet cloth freezing and evaporating at 0°C with dry wind
- Akash47
- · Replies 3 ·
Decreasing size of person's shadow as they walk toward a lamp
- Akash47
- · Replies 2 ·
How to Determine Acceleration from a Velocity-Time Graph?
- Alexanddros81
- · Replies 5 ·
Marble on bent track: position, velocity and acceleration graphs
- Alexanddros81
- · Replies 4 ·
What is the function x(t) for an underdamped oscillating system
- Damian
- · Replies 5 ·
Did I count this current in a circuit correctly?
- Duc Anh Le
- · Replies 6 ·
Potential energy and Conservative Force
- Arman777
- · Replies 4 ·
Calculate Avg Power Output for 75kg Person Walking 100ft in 3min
- Madelin Pierce
- · Replies 9 ·
Heat Energy and Power -- Heating ice in a copper pan
- Madelin Pierce
- · Replies 5 ·
Finding z component of center of mass of a complex shape
- Ella Tankersley
- · Replies 7 ·
Percentage energy loss (mechanical energy) problem
- poopandpee
- · Replies 4 ·
Tarzan swinging on a vine -- At what angle does the vine break?
- Vc91
- · Replies 8 ·
Force and acceleration of a rocket
- Sarah0001
- · Replies 3 ·
Current Flow Through Lamps in Circuits
- Jimmy87
- · Replies 9 ·
Can a 28.5Hz Frequency Cause a Standing Wave in a 6m Long String?
- Codav
- · Replies 3 ·
Net Electric field due to 3 charges
- GayYoda
- · Replies 1 ·
Time required to change the velocity of an asteroid?
- Howard Fox
- · Replies 23 ·
Velocity-time graph given. Plot acceleration vs time etc.
- Alexanddros81
- · Replies 1 ·
A ball bounces off a brick wall, Find the average acceleration
- Alexanddros81
- · Replies 5 ·
What is the normal force exerted on a suitcase being pulled at an angle?
- Alice_in_Wonderland
- · Replies 2 ·
Confusion about the direction of the vectors: motional EMF
- Granger
- · Replies 2 ·
Net force on quarterback hit by two linebackers
- Alice_in_Wonderland
- · Replies 15 ·
Why does bulb brightness change when switch S opens?
- omnislash
- · Replies 6 ·
Contradiction in a charge redistribution problem
- Raihan amin
- · Replies 7 ·
What will the FBD of 2 blocks being pulled look like?
- lyn83716
- · Replies 7 ·
Calculating Air Speed Diff. of Plane Lifts
- Studphy
- · Replies 6 ·
Understanding Kirchoff's Law and Solving Circuit Problems
- Pochen Liu
- · Replies 3 ·
Forces of a straight wire on a semi-circular wire loop (Magnetism)
- cookiemnstr510510
- · Replies 17 ·
SR: magnitude of a particle's 3-momentum
- lomidrevo
- · Replies 3 ·
Pressure and heights of a manometer -- Find the fluid flow rate
- Jenny Physics
- · Replies 1 ·
A charged capacitor when connected to uncharged one
- r0ss
- · Replies 1 ·
How to derive a formula for simple harmonic motion?
- Matej Pertot
- · Replies 1 ·
Person driving at 89.5 km/h with 22-minute rest stop
- Alexanddros81
- · Replies 5 ·
The Difference Between Diffraction And Interference Patterns
- PhysicsGuy12341
- · Replies 3 ·
What is the average acceleration of a cart with photogates 30 cm apart?
- curiouspup34
- · Replies 8 ·
Solving Hooke's Law Problems: Compression & Forces
- Sarah0001
- · Replies 4 ·
Can instantaneous velocity be different from average velocity?
- kolade
- · Replies 11 ·
What is the y-component of Fa in statics?
- talmid100
- · Replies 17 ·
Finding two objects velocity after an elastic collision
- DeltaForce
- · Replies 10 ·
A father spins his child on a cart
- Cc518
- · Replies 10 ·
Standard deviation and probability for decay
- Flabbergast
- · Replies 5 ·
Cylinder rolling on a moving board
- Jenny Physics
- · Replies 16 ·
How do I find out the angle and distance
- abelmoore
- · Replies 26 ·
Circuit with resistor, switch and capacitor
- johann1301h
- · Replies 62 ·
Describe what happens to a box attached to a pulley + spring
- YMMMA
- · Replies 15 ·
Which of the options describes the phase constant for SHM?
- Salman Ali
- · Replies 4 ·
Initial velocity in an inelastic collision
- EMJ
- · Replies 4 ·
What is the velocity of observer O' in the Lorentz Transformation problem?
- Arman777
- · Replies 8 ·
Why Can't I Get the Correct Answer Using Energy to Calculate Rotational Inertia?
- Pochen Liu
- · Replies 3 ·
Counting absorption and emission lines for multi-level atoms
- YMMMA
- · Replies 10 ·
What is the magnitude of acceleration?
- YMMMA
- · Replies 6 ·
Why does switching this circuit on take longer
- Pochen Liu
- · Replies 1 ·
Does a Circular Capacitor with a Dielectric Radiate an Electromagnetic Field?
- Noname
- · Replies 2 ·
Power output of a intercooler and turbocharger
- Anne3
- · Replies 1 ·
Particle falling inside a sphere due to gravity
- Robin04
- · Replies 5 ·
What are the frequency and speed of a photon after scattering
- YMMMA
- · Replies 1 ·
Which graph represents the Energy of a photon vs intensity?
- YMMMA
- · Replies 2 ·
Path length differences/ interference problem
- YMMMA
- · Replies 1 ·
Why the large ball falls farther than the smaller one?
- YMMMA
- · Replies 31 ·
How do I solve for an elastic collision going up a ramp?
- Temple1998
- · Replies 10 ·
Rod on rails in a magnetic field
- johann1301h
- · Replies 5 ·
Calculate the final velocity of each cart after a collision
- rrosa522
- · Replies 8 ·
Finding work done by worker pulls
- shahrilmajid
- · Replies 3 ·
Circular motion/ speed increases at a constant rate
- YMMMA
- · Replies 7 ·
Finding the density of a block in two layers of liquids
- Akash47
- · Replies 6 ·
Shear modulus, finding length of board
- DracoMalfoy
- · Replies 12 ·