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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Using the 1st law of thermodynamics to explain the change in specific latent heat
- songoku
- · Replies 26 ·
Water spraying into a moving container - momentum equation derivation
- Su6had1p
- · Replies 29 ·
Energy destruction or net power?
- micdib
- · Replies 1 ·
Difference in Potential Between Charged Sphere and Surrounding Shell
- rosedog09
- · Replies 7 ·
Rocket Launched Up When a Stone is Dropped Down
- putongren
- · Replies 10 ·
Inelastic collision: A package is dropped onto a moving sled
- GIASAL
- · Replies 7 ·
What force causes precession?
- test123
- · Replies 36 ·
Great circle between two points on the Earth's surface
- brotherbobby
- · Replies 7 ·
Charged sphere
- jnuz73hbn
- · Replies 13 ·
Two balls, dropped with a delay of ##\Delta t##, meet after rebound
- brotherbobby
- · Replies 45 ·
SHM amplitude and angular frequency from velocity equations
- Sangomans
- · Replies 3 ·
Apparent contradiction in a simple circuit
- palaphys
- · Replies 4 ·
Simple kinematics problem — falling from a geostationary satellite
- AlternativePhysics
- · Replies 23 ·
Newton's laws and inclined plane with friction
- CURMC
- · Replies 8 ·
Why does a fan cool you in a sealed room if it adds heat?
- sol_2001
- · Replies 19 ·
Field at a point on the axis of a ring with variable charge density
- JesseAbberton
- · Replies 9 ·
The electric field inside an insulating infinite length solid cylinder
- JesseAbberton
- · Replies 1 ·
Power of a thin lens in a medium is 1/fₘ or μₘ/fₘ ?
- shubhamakshit
- · Replies 17 ·
Why does adiabatic compression use more energy than adiabatic expansion?
- T C
- · Replies 67 ·
Cornering on a Smooth Surface
- mangolucy
- · Replies 2 ·
If Heat Is Motion, Why Isn’t All Motion Heat?
- sol_2001
- · Replies 26 ·
Finding potential difference in a circuit
- songoku
- · Replies 3 ·
Paradox in Induced Dipole Forces: Does it violate Newton's Third Law?
- EM-learner
- · Replies 3 ·
Semiconductor surface engineering
- LUFER
- · Replies 3 ·
Why can’t we observe all regions of the universe?
- Astro Santi
- · Replies 3 ·
Equal heat added to two spheres: why is the hanging sphere hotter?
- sol_2001
- · Replies 2 ·
Inclined plane with pulley: does tension angle change the acceleration?
- akapm90
- · Replies 12 ·
A very simple moments question
- physicals
- · Replies 105 ·
Simple Thermodynamics question: Temperature of water in a cup after adding cooler water to it
- untilthecern
- · Replies 3 ·
Sliding block hits and compresses a spring
- Antoha1
- · Replies 5 ·
Finding proper value for centripetal acceleration in a plane rising up
- aadityav
- · Replies 16 ·
Simple problem with voltages
- nickxyzt
- · Replies 7 ·
Slipping/Rolling Motion on Inclined Plane
- michelp
- · Replies 8 ·
A practical way to determine geographical meridian
- vcsharp2003
- · Replies 4 ·
Voltage that gives acceleration to relativistic particles
- Antoha1
- · Replies 3 ·
Angle between two alpha particle tracks due to proton bombardment of a nuclei
- Antoha1
- · Replies 9 ·
Which material will stop magnetic attraction?
- songoku
- · Replies 10 ·
Finding velocity component in momentum and relative velocity problem
- wingding1
- · Replies 1 ·
Rotating difraction grid
- phy_magic
- · Replies 1 ·
Spring aproximation
- phy_magic
- · Replies 3 ·
Finding the acceleration of a block on an inclined plane with friction
- Patrica87
- · Replies 2 ·
Doppler effect wavelength with moving source and receiver
- mcastillo356
- · Replies 5 ·
U-shaped length of chain falling when one end is released
- NTesla
- · Replies 30 ·
How is x-vt a rightward moving wave?
- Jaccobtw
- · Replies 13 ·
Find the acceleration of a block (some sort of double Atwood machine?)
- michelp
- · Replies 19 ·
How do I derive an expression for the velocity vector for any α?
- griffith
- · Replies 26 ·
Physical reasoning behind constraint equations in pulley systems
- griffith
- · Replies 13 ·
Electric potential due to shell containing a charge at an offset outside
- elex
- · Replies 5 ·
Working out the accelerations in a double Atwood pulley system
- hmparticle9
- · Replies 25 ·
Correct statement about size of wire to produce larger extension
- songoku
- · Replies 18 ·
Charge inside nested spheres
- phy_magic
- · Replies 1 ·
Pressure difference between two points in a tapered pipe
- I_Try_Math
- · Replies 6 ·
Magnitude of buoyant force in fluids of different densities
- I_Try_Math
- · Replies 17 ·
Voltage vs Distance graph for a given E vs D graph
- pgirl1729
- · Replies 9 ·
Correct statement about random process of radioactive decay
- songoku
- · Replies 12 ·
Curving of gravitational field lines
- pgirl1729
- · Replies 9 ·
Bernoulli vs real life experiment
- gen x
- · Replies 16 ·
Which one is correct statement regarding lightning?
- songoku
- · Replies 9 ·
Cone on horizontal surface
- phy_magic
- · Replies 16 ·
Chain falling out of a horizontal tube onto a table
- NTesla
- · Replies 100 ·
Earthed plates confusion
- tellmesomething
- · Replies 31 ·
2 pulleys 3 masses problems
- phy_magic
- · Replies 8 ·
Force between two halves of a current carrying hollow cylinder
- palaphys
- · Replies 3 ·
Two-layer dielectric, four-capacitor model vs three-capacitor model
- mmfiizik
- · Replies 5 ·
Proof of law of sines using cross product
- BelieverOf143___
- · Replies 10 ·
Magnetic field due to a coil wound on a hemsiphere
- palaphys
- · Replies 6 ·
Falling capacitor connected to constant voltage
- palaphys
- · Replies 3 ·
Decrease of amplitude in RLC circuit
- Antoha1
- · Replies 5 ·
Coulomb's force vs the Lorentz force
- Electrodude
- · Replies 29 ·
Cone Rolling on Conical Surface Dynamics
- vvvlad
- · Replies 2 ·
Speed of moth related to Doppler Effect
- songoku
- · Replies 8 ·
Struggling to make relation between elastic force and height
- renobueno4153
- · Replies 11 ·
Correct statement about a reservoir with an outlet pipe
- songoku
- · Replies 21 ·
Correct statement about siphon used to empty water tank
- songoku
- · Replies 11 ·
Bullet collision question
- imas_
- · Replies 6 ·
Confusion on sign convention in X-ray problems
- palaphys
- · Replies 4 ·
Minimum height of water to make the particle visible
- palaphys
- · Replies 4 ·
Negative entropy change when ice and water mix
- Su6had1p
- · Replies 6 ·
Flux through a ring due to two charges
- palaphys
- · Replies 10 ·
Static Mechanics: Aircraft Nosewheel Linkage Torque
- jojosg
- · Replies 4 ·
Force equation for stacked block in pulley system
- stunner5000pt
- · Replies 7 ·
Voltmeter readings for this circuit with switches
- karim2360
- · Replies 17 ·
Formula for Electromotive force?
- per persson
- · Replies 4 ·
Trying to understand the logic behind adding vectors with an angle between them
- renobueno4153
- · Replies 14 ·
Rolling without slipping on a curved surface
- NTesla
- · Replies 81 ·
A bead-mass oscillatory system problem
- Zayan
- · Replies 13 ·
Problem about units conversion: cm^2 --> m^2
- inuka00123
- · Replies 4 ·
Correct statement about movement of curve ball in a fluid
- songoku
- · Replies 9 ·
Mechanics question: Three masses and a pulley on a tabletop
- Zayan
- · Replies 3 ·
How to find eddy current (circular) path in this pendulum experiment?
- microdosemishief
- · Replies 9 ·
Two strings supporting a block at an angle
- TomPag
- · Replies 2 ·
Why can I neglect angular momentum due to precession here?
- infinite_sodium
- · Replies 9 ·
Egg Drop Challenge! Need ideas for winning designs
- Addiep
- · Replies 8 ·
Multiple reflections in a mirror system
- palaphys
- · Replies 5 ·
How fast is the fly's shadow moving?
- goatedgolgi
- · Replies 11 ·
Apparent length of ice cube submerged in water due to refraction
- murshiddreamengineer
- · Replies 29 ·
Electromagnetic field theory -- Potential inside a conducting sphere
- per persson
- · Replies 9 ·
Why is the weight of the block equal to the tension in wire C?
- random124
- · Replies 9 ·
Phase relation between two waves
- songoku
- · Replies 4 ·