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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Lagrangian for a bead on a wire
- vbrasic
- · Replies 1 ·
What does uniform pressure mean in a fluid-filled hemispherical shell?
- eprparadox
- · Replies 5 ·
Problem related to the Bernoulli Equation
- Zahid Iftikhar
- · Replies 16 ·
Finding the charge density that produces a specific field
- Neolightdraco
- · Replies 2 ·
Understanding Pressure and Volume in a U-shaped Tube
- Waffle24
- · Replies 13 ·
Verification of Ampere-Maxwell Law
- Alex145
- · Replies 2 ·
A vessel with fluids of two different refractive indices
- Vriska
- · Replies 8 ·
Tension in rope between cosmonaut and spaceship in orbit
- Jorgen1224
- · Replies 5 ·
Hammer dropping on pile: momentum and energy conservation
- sevesham
- · Replies 11 ·
Optimal angle to guide pallets with the least friction
- RobinDP
- · Replies 18 ·
Binary star system after supernova: is it still bound?
- Aleolomorfo
- · Replies 5 ·
What is the last step in the derivation of the Biot Savart Law?
- CoolDude420
- · Replies 3 ·
Equation of scaler potential problem
- tomalku
- · Replies 1 ·
How Does Reducing Wavelength Affect Photoelectron Kinetic Energy and Current?
- jiayingsim123
- · Replies 4 ·
Kinetic energy as seen from a different frame
- Amitayas Banerjee
- · Replies 16 ·
Find the Initial Velocity and Launch Angle for a Particular Trajectory
- Francis Perez
- · Replies 10 ·
Finding max. velocity of jet w/ constant and/or changing acceleration
- mgsintheta
- · Replies 6 ·
Determine the relationship between θB and θA
- Richie Smash
- · Replies 20 ·
How Do You Calculate Electric Potential from a Field Graph?
- dect117
- · Replies 8 ·
The potential difference between a sphere shell and a point
- Tomi Kolawole
- · Replies 19 ·
Potential of an undefinided cylinder
- Guillem_dlc
- · Replies 14 ·
How Does W=VIt Describe Energy in Electrical Circuits?
- Daniel2244
- · Replies 2 ·
A man wants to move some heavy boxes up to the loft in his barn
- HappyFlower
- · Replies 2 ·
Find the charge of Capacitor 2 in the circuit
- Tomi Kolawole
- · Replies 13 ·
Electric Potential Energy-minimum distance between two pucks
- chef99
- · Replies 8 ·
Normal force of a block with a massless rope
- Johns24
- · Replies 13 ·
Why is the force of the spring equal to the centripetal force?
- Perseverence
- · Replies 8 ·
How Do You Determine the Load Resistor Value for Maximum Power Dissipation?
- chocolatecake
- · Replies 25 ·
What Is the Net Electric Force and Field on Charge 1?
- chef99
- · Replies 7 ·
Apparent (clearly false) contradiction - Kepler's Third Law
- Brad
- · Replies 2 ·
What is the molar heat capacity of an ideal gas at constant pressure and volume?
- Banyans
- · Replies 5 ·
What is the electric potential at points A and B?
- Cauchemar
- · Replies 2 ·
Proving a wave satisfies the Helmholtz equation
- Matt Chu
- · Replies 1 ·
Circular motion on a banked curve with 25 degree angle
- Dylan R
- · Replies 2 ·
Parallel Axis Theorem Experiment
- bobdylan
- · Replies 1 ·
Calculating the angle of a bus driving off a cliff
- Alexander350
- · Replies 2 ·
Question on correctly interpreting a bra-ket equation
- blaisem
- · Replies 2 ·
Physics Word Problem: Arrow and moving target collision
- phantom lancer
- · Replies 2 ·
Centripetal/Centrifugal Motion on a merry-go-round
- AAAA
- · Replies 10 ·
Hydrostatic equlibrium and Centre of pressure
- Taylor_1989
- · Replies 3 ·
Fluoroscopic optimal conditions
- Taylor_1989
- · Replies 4 ·
Is voltage the same in parallel circuits with different resistance values?
- Daniel2244
- · Replies 2 ·
Charged pendulum in magnetic field
- Muthumanimaran
- · Replies 3 ·
Displacement and Velocity on a Circular Track
- Canada54211
- · Replies 8 ·
Path difference from two speakers in phase at 600 Hz
- Ajaroy
- · Replies 6 ·
The focal length of a microscope eyepiece
- TheSodesa
- · Replies 1 ·
Interpreting velocity from a time-velocity graph with negative values
- kingandsona
- · Replies 17 ·
An equilibrium problem -- Spinning a hinged rod and a ball
- Brilli
- · Replies 21 ·
Electrostatic energy after a metal piece is inserted between 2 capacitor plates
- Helly123
- · Replies 12 ·
Deriving the Thick Lens Equation: How to Obtain the Equations for a Thick Lens?
- Arman777
- · Replies 4 ·
Finding the Mass of a Hanging Rope (Wave Problem)
- Chansudesu
- · Replies 4 ·
How do write the force diagram for the following situation?
- eprparadox
- · Replies 2 ·
Parallel plate electric fields -- # of electrons transferred
- radiant_june
- · Replies 2 ·
How Can You Solve Reaction Forces in Bearings Using Basic Calculations?
- domabo
- · Replies 11 ·
Kirchhoff's First Law to solve a circuit with 2 loops
- Daniel2244
- · Replies 6 ·
Optics: deriving Nodal and Principal Points for a thick lens
- Arman777
- · Replies 2 ·
Calculate Resultant Temperature: 100g Steam at 100°C + 500g Ice at -20°C
- Rishabh0110
- · Replies 1 ·
Two charged pith balls: finding Fg, Fe, charge, and tension
- Brittany Anderson
- · Replies 2 ·
Find the frictional force between a block and a wall
- isukatphysics69
- · Replies 5 ·
Box lifted off the ground by a tension force at a 32 degree angle
- isukatphysics69
- · Replies 3 ·
Finding the DSB-SC signal from a given waveform
- Cocoleia
- · Replies 1 ·
Non-conductve sphere with cavity -- find Electric field
- Manolisjam
- · Replies 7 ·
Binary system of stars (##\alpha## - centauri)
- Aleolomorfo
- · Replies 5 ·
Distance a platform moves when a person walks on it
- songoku
- · Replies 3 ·
Cube balanced at equilibrium about two different axes
- eprparadox
- · Replies 2 ·
Electric field strength at a point between charges
- radiant_june
- · Replies 1 ·
How can I solve for I in this equation?
- HappyFlower
- · Replies 6 ·
Find tensions of ropes that are attatched to a steel beem?
- isukatphysics69
- · Replies 2 ·
Tarzan swinging on a rope -- find the acceleration
- isukatphysics69
- · Replies 20 ·
Newton's Second Law Rocket Problem
- mailmas
- · Replies 13 ·
How Is Electric Potential Difference Calculated in a TV Tube?
- Physics345
- · Replies 34 ·
Deriving relativistic mass from inelastic collision in different frames
- mainguy
- · Replies 2 ·
Find the Voltage in the parallel resistor-capacitor circuit
- Helly123
- · Replies 31 ·
Average Force Question Given Velocities [High School]
- Liam C
- · Replies 4 ·
Magnitude of the acceleration of the fly
- syamsul andry
- · Replies 3 ·
How does warming the hoop affect the frequency of an escapement in a clock?
- bolzano95
- · Replies 13 ·
Can Mars, Earth and the Sun form a 90 degree angle?
- Luche
- · Replies 3 ·
Energy analysis of a particle moving in a shrinking circle
- DanielA
- · Replies 17 ·
Calculating Change in Kinetic Energy for a Collision on a Frictionless Air Table
- Elissa
- · Replies 4 ·
Solving Jumping Off a Disk Problem (d)
- Andy Resnick
- · Replies 24 ·
How Does the Absorption Law Simplify This Boolean Function?
- Lilia
- · Replies 2 ·
Three balls meeting at maximum height with vertical motion
- Joze
- · Replies 2 ·
How Does the Earthed Sphere Acquire Charges?
- Jahnavi
- · Replies 15 ·
EM fields of two opposite moving point charges
- {???}
- · Replies 1 ·
Kinetic energy in electron volts
- LuigiAM
- · Replies 7 ·
Pulse repetition frequency ultrasound confusion
- Taylor_1989
- · Replies 7 ·
How Should Error Be Calculated When Determining Angles from Voltage Maxima?
- CricK0es
- · Replies 2 ·
How to Determine Velocity and Acceleration from Position?
- Fia Ismi Nur Alfiah
- · Replies 10 ·
Normal forces between stacked crates in an elevator at constant speed
- bornofflame
- · Replies 5 ·
Rock dropped inside of a moving vehicle
- Perseverence
- · Replies 11 ·
Electric field inside a uniformly polarized cylinder
- Potatochip911
- · Replies 3 ·
The tension in the cord in this system
- Blueberrymuffim
- · Replies 7 ·
Motion and Forces [High School]
- Liam C
- · Replies 5 ·
Force decreased but velocity continues to increase
- Perseverence
- · Replies 6 ·
What Does the 10% Resistance Boundary Mean in Circuit Measurements?
- Daniel2244
- · Replies 6 ·
Work done by friction on smaller block
- Jahnavi
- · Replies 27 ·
Finding launch angle when initial speed is 4 times speed at peak
- Mac5214
- · Replies 7 ·
Sources of Error in a Speed of Sound Experiment
- mitchy16
- · Replies 3 ·
Finding the magnitude of the current flowing through a wire
- rocky4920
- · Replies 13 ·
Why P = F*v = ε^2/R = (vBl)^2/R when there's no friction?
- Karagoz
- · Replies 6 ·