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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E = hf what sort of Energy is this?
- WWCY
- · Replies 1 ·
[Momentum and Energy] How much of initial velocity is lost?
- Notaphysicsmajor
- · Replies 2 ·
Compare and contrast a 2.2 eV photon with a 2.2 eV electron
- LionLieOn
- · Replies 2 ·
Person pulling themselves up a double pulley
- SadDan
- · Replies 19 ·
Find two lowest frequencies standing wave
- late347
- · Replies 5 ·
Find currents I1 and I2 in a 3-loop, 2-battery circuit
- prajakta
- · Replies 4 ·
Putty ball colliding with block on frictionless surface
- lisastar
- · Replies 5 ·
Acceleration Vector Word Problem
- Retweetfire
- · Replies 4 ·
Find vertical distance of missed shot
- hndalama
- · Replies 8 ·
Work to stretch a spring 15 cm supporting a 400 g mass
- vcsharp2003
- · Replies 2 ·
Changing the Seasons by Shifting Center of Mass
- Seth Newman
- · Replies 9 ·
Calculating thickness of insulation, rate of T rise and fall
- Brownstone
- · Replies 6 ·
Cartesian Vector Form - Door with 2 Chains
- BuckBee
- · Replies 14 ·
Calculating the Time for a Car Chase: Kinematics Question
- vbrasic
- · Replies 4 ·
The Height and Speed of a Geosynchronous Satellite
- EthanVandals
- · Replies 11 ·
How Do You Calculate Phase Difference and Equilibrium Timing in Harmonic Waves?
- late347
- · Replies 14 ·
How Does Earth's Magnetic Field Combine with a Nearby Current-Carrying Wire?
- veroniknstudying
- · Replies 2 ·
How do I find the forces acting on a ladder?
- Eclair_de_XII
- · Replies 9 ·
Terminal Velocity: Solve Physics IA Problem
- Markus Lervik
- · Replies 5 ·
Acceleration and tension in two blocks connected by cord
- sunnnystrong
- · Replies 6 ·
Tension in upper wire for revolving 970g mass on two wires
- sunnnystrong
- · Replies 2 ·
How to Determine the Number of Turns in a Solenoid?
- Matt21
- · Replies 2 ·
Problem using centripital accel.... Can you check my work?
- sunnnystrong
- · Replies 4 ·
Finding the Zeros of Damped Harmonic Motion Equations
- patrickmoloney
- · Replies 3 ·
How Is Angular Acceleration Calculated for a Speeding Ferris Wheel?
- EthanVandals
- · Replies 1 ·
Finding electric potential between two concentric spheres.
- epicrux
- · Replies 3 ·
Why does centripetal force do zero work on a swinging ball?
- EthanVandals
- · Replies 8 ·
Problem using Newtonian Gravity.... Will you check my work?
- sunnnystrong
- · Replies 4 ·
Time Dilation - measured vs observed time interval
- astrocytosis
- · Replies 6 ·
How Does the Electric Field Influence Potential Difference Calculation?
- Arman777
- · Replies 1 ·
Decelerating Force of Dust on Spaceship - Conservation of Momentum
- flamespirit919
- · Replies 8 ·
Proving the expectation value of any eigenvalue function
- Cocoleia
- · Replies 5 ·
Photon-electron collision with pair production
- WrongMan
- · Replies 4 ·
How is gravitational acceleration affected with distance?
- Unteroffizier
- · Replies 4 ·
Is angular acceleration the radial or transverse component?
- Faiq
- · Replies 14 ·
Explosion and conservation of momentum problem
- Pochen Liu
- · Replies 5 ·
Lagrangian about rolling disk on a horizontal plane
- BREAD
- · Replies 1 ·
Is internal energy really decreasing in situation 2?
- vcsharp2003
- · Replies 32 ·
Magnitude of tenstion required to get chest moving.
- Rijad Hadzic
- · Replies 8 ·
A question on E Flux and Fields
- WWCY
- · Replies 2 ·
Express mm/s in negative powers notation
- AndyKeeble
- · Replies 1 ·
How Small Must Mars Be Compressed to Become a Black Hole?
- Seth Newman
- · Replies 4 ·
Drawing free body diagrams (torque; rotational motion)
- Janet1234
- · Replies 2 ·
How Much Kinetic Energy to Accelerate a Proton to 0.9999c?
- StillLearningToronto
- · Replies 5 ·
Algebra Kinematics: Ball above head, how fast must travel to
- Notaphysicsmajor
- · Replies 4 ·
Why is tension antiparallel to dr in the string-pulling problem?
- Elias Waranoi
- · Replies 7 ·
Radial component of B field of solenoid
- madhavpr
- · Replies 6 ·
Can this gravity problem be solved without using the Earth's mass
- hndalama
- · Replies 5 ·
How to analyze the compression of a clay ball
- dannyboy2233
- · Replies 13 ·
A ball is hit with initial velocity -- Find the Horiz/Vert displacement
- Rijad Hadzic
- · Replies 10 ·
Sources of error in sprint kinematics lab with spark timer
- Chriszerchage12345
- · Replies 1 ·
Finding acceleration and maximum displacement from Vx = 2.0t - t²
- ldesai149
- · Replies 9 ·
Finding the Direction of Magnetic Fields with Opposing Currents
- PolarBee
- · Replies 5 ·
Minimum safe height for a roller coaster
- jmm5180
- · Replies 10 ·
Relativity and Equivalence of Mass and Energy
- Alena Selone
- · Replies 5 ·
Maglev Train and Earth's Rotation
- DBirk
- · Replies 7 ·
Find the induced electromotive force (epsilon)
- Xhulio644305
- · Replies 5 ·
Body dropped from tower covers 7x in last second
- NoahCygnus
- · Replies 11 ·
About electric fields (Symmetry)
- Azura
- · Replies 4 ·
When will two current-carrying wires touch each other
- Asmaa Mohammad
- · Replies 9 ·
Can you get the inertia from the angular speed?
- Ys VL
- · Replies 5 ·
How Long Does It Take for a Ball Thrown Upwards to Hit the Ground?
- NoahCygnus
- · Replies 12 ·
Photoelectric effect behavior with intensity and frequency changes
- AlexisFair
- · Replies 4 ·
Resistance of a heating element?
- Canuck156
- · Replies 25 ·
Voltmeter reading when current varies in adjacent coil P
- Taniaz
- · Replies 18 ·
Particles in a Magnetic Field Question
- pauladancer
- · Replies 13 ·
Charge distribution and electric field for concentric conducting spheres with Gauss' law
- Arman777
- · Replies 28 ·
Length and Area of Cylindrical Nichrome Resistor
- Robotic-Cow
- · Replies 3 ·
Angular acceleration of an atwood pulley
- hndalama
- · Replies 8 ·
Heat energy in an inelastic collision
- vcsharp2003
- · Replies 8 ·
How Does Changing Temperature and Pressure Affect Gas Density?
- annalian
- · Replies 3 ·
Rigid body orientation using Euler angles confusion
- Tar
- · Replies 2 ·
Integrating a Gaussian wave packet
- BREAD
- · Replies 1 ·
Find the linear acceleration of points on a rolling cylinder
- vcsharp2003
- · Replies 17 ·
Why Does a Sealed Chip Bag Expand at High Altitudes?
- Jam Smith
- · Replies 7 ·
Applications of the Helmholtz Coil: Shielding and Stabilizing Fields
- CricK0es
- · Replies 3 ·
Fourier/heat problem involving hyperbolic sine
- danmel413
- · Replies 3 ·
Where is the force coming from to compress the spring
- Lafith
- · Replies 8 ·
How to calculate the gravitational field outside of a sphere
- Vitani11
- · Replies 8 ·
Identify class for three metal bars (Magnetic Field)
- jlmccart03
- · Replies 2 ·
Dipole Oscillation İn Electric Field
- Arman777
- · Replies 8 ·
Momentum in a photon -> cathode collision
- ChessEnthusiast
- · Replies 5 ·
What constant acceleration do you need to catch up?
- Cynthia
- · Replies 4 ·
10 cm diameter loop in magnetic field
- ikihi
- · Replies 2 ·
Force diagram of a spinning mass tied to a string
- hndalama
- · Replies 15 ·
Molar heat capacity at constant pressure/volume
- Nick Jarvis
- · Replies 2 ·
What is the kinetic energy of a proton when neutron decays?
- llatosz
- · Replies 20 ·
Electrical and Mechanical Energy as it relates to Capacitors
- dunn1313
- · Replies 12 ·
Magnetic induction of circular loop at axial point
- BREAD
- · Replies 5 ·
Calculate the force to stop a train
- Apple&Orange
- · Replies 2 ·
Network function for an opamp circuit
- Cocoleia
- · Replies 13 ·
Rotation of a ring pivoted at several points
- davidpascu
- · Replies 16 ·
Lorentz Transformations vs Galilean Transformation
- Kudox117
- · Replies 2 ·
Calculating components of a force applied at an angle
- Kyle Spengler
- · Replies 10 ·
What Happens to the Charge Distribution When Separating Two Metal Spheres?
- ikihi
- · Replies 8 ·
What is the Work Involved in Lifting and Moving a Box with a Crane?
- Adrian379
- · Replies 4 ·
Projectile motion when you are only given time and range
- Acmnji
- · Replies 21 ·
Finding the angular spread of a diffraction minima?
- Peter Andrews
- · Replies 1 ·
Why Does Pulley and Spring Setup Result in 2(x1+x2) Displacement?
- Guidestone
- · Replies 8 ·
Finding average speed from a displacement-time graph
- NoahCygnus
- · Replies 10 ·