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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Surface current of superconducting sphere in magnetic field
- Jan05
- · Replies 1 ·
Force of car pushing on a truck
- syllll_213
- · Replies 25 ·
Force needed to raise a backpack
- syllll_213
- · Replies 1 ·
Uniform circular motion angle relationship
- syllll_213
- · Replies 6 ·
Simulating a Rotary Inverted Pendulum in Python
- Remusco
- · Replies 15 ·
Pressure of water coming out of a hose nozzle
- mr_sparxx
- · Replies 7 ·
Focal length of the eyepiece lens in a compound microscope
- tellmesomething
- · Replies 7 ·
Find the magnitude of the child's acceleration
- chwala
- · Replies 7 ·
Why are these forces not included in the solution? (Torque Problem)
- mathandphysics
- · Replies 12 ·
Why do compasses always point in the wrong direction?
- ulrichburke
- · Replies 6 ·
Charge on disk with non uniform surface charge density
- songoku
- · Replies 12 ·
Optics problem with a glass lens immersed in water
- tellmesomething
- · Replies 3 ·
Can a rest frame be chosen for a system of two photons?
- sHimprinten
- · Replies 7 ·
1-dimensional kinematics - final velocity of 2 trains in opposing direction
- syllll_213
- · Replies 3 ·
Total energy of a wave on a string
- Brian_D
- · Replies 2 ·
Spring force required to overcome friction between two blocks
- MenchiKatsu
- · Replies 10 ·
Yo-yo with two radii rolling without slipping under two forces
- cianfa72
- · Replies 42 ·
Stopping a rod moving with constant omega
- SampleLow
- · Replies 13 ·
Handling two SHMs in different directions
- palaphys
- · Replies 18 ·
Sound in an Open Vertical Tube partially filled with Water
- fjccommish
- · Replies 4 ·
Best Egg Drop Contest Shock Absorber?
- bug
- · Replies 1 ·
Problem involving SHM and a collision
- palaphys
- · Replies 27 ·
Calculate the velocity of the canoe relative to the water
- waltssillyhat
- · Replies 8 ·
Amplitude of a stretched spring that is stretched further
- MenchiKatsu
- · Replies 6 ·
Waves on a String Fixed at the Ends
- fjccommish
- · Replies 7 ·
Electric Potential Energy of Point Charge Systems
- flyonthewall
- · Replies 2 ·
Landing reusable booster rockets
- paulb203
- · Replies 35 ·
Problem with the power of car
- rickyw2777
- · Replies 3 ·
Tangential velocity of external satellite
- jhonconnor
- · Replies 7 ·
Will my weather balloon work in the Stratosphere?
- Max CR
- · Replies 7 ·
Angular momentum- rotating rod
- palaphys
- · Replies 17 ·
Transverse mechanical waves in a steel wire
- Brian_D
- · Replies 10 ·
Thermodynamics - Dryness fraction Equations
- maserati1969
- · Replies 1 ·
Dryness fraction of saturated steam
- maserati1969
- · Replies 2 ·
Force equation for accelerating object
- Camilo08642
- · Replies 5 ·
Loop equations for this battery-resistor circuit
- eleking16
- · Replies 48 ·
Work done to insert a point charge 𝑞 at the center of a conducting sphere
- songoku
- · Replies 12 ·
Understanding a math step in solving Schrödinger's equation for single particle in a box
- zenterix
- · Replies 8 ·
Center of mass motion when wedge and block have different vertical accelerations
- palaphys
- · Replies 25 ·
Circle approximation of a wave pulse on a string or spring
- Brian_D
- · Replies 29 ·
Calculating magnetic field outside a solenoid
- Jesper12
- · Replies 15 ·
Derivation of the aerodynamic drag equation
- dd5139
- · Replies 2 ·
I do not understand why the extra 2 factor is there (energy of 1D electron gas at zero temperature)
- bluepilotg-2_07
- · Replies 5 ·
Rotating ring on a rough surface- but with a twist
- palaphys
- · Replies 151 ·
Electric potential of nested spherical shells
- songoku
- · Replies 4 ·
Ring rolling on surface: find center acceleration and friction force
- palaphys
- · Replies 1 ·
Why is it necessary to start this experiment with the water level at 400mL?
- Aurelius120
- · Replies 35 ·
How to tell if polarized light from a windscreen is transmitted or reflected
- songoku
- · Replies 11 ·
Force pulling on a string at an angle with a block at the other end
- kekpillangok
- · Replies 2 ·
Confusion about friction in rotating ring
- palaphys
- · Replies 12 ·
Problem n. 7 chapter 4 Eisberg Resnick "Quantum Physics"
- baffetto59
- · Replies 9 ·
A block dropping onto a spring system
- palaphys
- · Replies 58 ·
Paper 'helicopter' experiment - Adding Weight Decreases Flight Time?
- Mahid
- · Replies 20 ·
When are reactive forces enough to support this body?
- per persson
- · Replies 14 ·
Can A Vector Have Components Of Say Y or Z in the X-Hat Direction?
- Ascendant0
- · Replies 8 ·
A problem about momentum and the elastic collision of two particles
- Minming
- · Replies 13 ·
Identical Batteries in Parallel do not Draw Same Current, Non-Ideal?
- BuddyBoy
- · Replies 7 ·
Circuit currents using Laplace transforms instead of differential equations
- Diego
- · Replies 5 ·
Strength to weight ratio in balsa wood arch truss bridge
- Meep
- · Replies 1 ·
Displacement amplitude of the faintest sound detectable by a human ear
- FranzDiCoccio
- · Replies 28 ·
Designing a speed bump given the maximum vertical wheel acceleration
- Bling Fizikst
- · Replies 18 ·
How do you Calculate Ampacity of a Conductor Geometry?
- BuddyBoy
- · Replies 64 ·
Does the force from the ground change the initial vertical acceleration of a jumping flea?
- Clockclocle
- · Replies 5 ·
Calculate the Acceleration of this Car
- dvkdcmfvifmceif123
- · Replies 7 ·
Two ropes pulling on a cylinder that is translating and rotating on a plane
- lorenz0
- · Replies 2 ·
Optical path difference in a soap film interference
- lorenz0
- · Replies 4 ·
Why is the Celsius symbol not placed on the Kelvin unit?
- OMAR_ALQAM
- · Replies 19 ·
Comparing weights of balloons
- Thamska
- · Replies 80 ·
projectile motion problem with no initial velocity given
- jrm1508
- · Replies 3 ·
Calculate the Capacitance given the Charge and Potential Difference
- member 757689
- · Replies 1 ·
Satellite orbiting Earth angular velocity and frequency calculation
- Safinaz
- · Replies 5 ·
Kinematics in multiple frames
- Bling Fizikst
- · Replies 10 ·
Clarify definition of measurement
- Faraz0007
- · Replies 6 ·
Direction of oscillations of a polarised light wave
- songoku
- · Replies 12 ·
Find the height of a lamp based on the velocities of projectiles
- stabby_faris
- · Replies 40 ·
Velocity of a water jet exiting a water tank drain tube
- WhiteyM
- · Replies 5 ·
Electric Field Flux Question
- member 757689
- · Replies 4 ·
Why does friction on a sphere create torque in static equilibrium?
- I_Try_Math
- · Replies 43 ·
Energy Changes in Capacitor After Disconnecting from Battery
- MatinSAR
- · Replies 4 ·
Entropy of a sealed room with an open-door refrigerator
- techsingularity2042
- · Replies 5 ·
Diffraction pattern from a grating
- techsingularity2042
- · Replies 3 ·
Induced current ranking in three coils with changing magnetic flux
- Lunar Manatee
- · Replies 10 ·
Two 45-degree string tensions supporting a 10 N weight
- Physical_Fire
- · Replies 22 ·
Need my mind refreshed on geometry
- ishigg
- · Replies 9 ·
Kinematics problem involving multiple frames
- Bling Fizikst
- · Replies 6 ·
Why do water streams get thinner as they fall?
- goleynik
- · Replies 6 ·
Differential Equation of a Pendulum
- Tygra
- · Replies 32 ·
Time taken to slide down a circular path (with friction)
- eddiezhang
- · Replies 43 ·
Block sliding on vertical track with friction (Solved problem)
- kuruman
- · Replies 4 ·
Which of these rods are in equilibrium?
- ymnoklan
- · Replies 39 ·
Uncertainties For Wave Packets
- flyusx
- · Replies 4 ·
Why does m must be a natural number in wave equation separation of variables?
- jonny997
- · Replies 8 ·
Interpretation of Negative Time in Minkowski Diagram
- techsingularity2042
- · Replies 1 ·
Order of events in a train traveling at v = 0.76c
- techsingularity2042
- · Replies 28 ·
What are auxiliary quantities and function linearization in physics?
- Voidness
- · Replies 27 ·
Velocity vectors; arrow length
- paulb203
- · Replies 3 ·
Electrical Circuits - Parallel vs. Series
- BuddyBoy
- · Replies 14 ·
Frequency of pendulum in the presence of electric field
- songoku
- · Replies 16 ·
Electrostatic force on a test charge by uniformly charged annular disc
- YK0001
- · Replies 1 ·