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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Why do orbiting stars have nonzero net force despite translational equilibrium?
- BLUE PEARL
- · Replies 1 ·
Finding the mass constant k for a weighted disc with hole
- Roadtrip
- · Replies 3 ·
Water level involving Density, mass, volume, radius
- Jessica1234
- · Replies 1 ·
Understanding EMF and Charge Separation in a Changing Magnetic Field
- Icy98
- · Replies 2 ·
No slip condition: is fluid velocity zero or equal to the boundary?
- foo9008
- · Replies 1 ·
Archived Power absorption in a lightly damped oscillator approaching Lorentzian form
- mbigras
- · Replies 2 ·
Force between plates of a capacitor with dielectric and cell
- cr7einstein
- · Replies 6 ·
Why Does the Acceleration of a Particle Need to Be Zero for Maximum Speed?
- Roadtrip
- · Replies 2 ·
Momentum with Two Carts on a Low-Friction Track
- xxphysics
- · Replies 3 ·
Spring compression after bullet passes through block
- Kloud
- · Replies 14 ·
Force needed to pull out a plug out of a drain under water?
- qwertyqwert321
- · Replies 1 ·
Calculating moment of inertia of a complicated system
- iancheung228
- · Replies 3 ·
How to calculate moment of inertia of this irregular system?
- iancheung228
- · Replies 23 ·
Find cable angle to pull maximum weight with tension limit of 1100 N
- nothingsus
- · Replies 4 ·
Friction and inclines problem. i
- Terrell
- · Replies 5 ·
Kinetic Energy from a Simple Harmonic motion and spring
- Brittany King
- · Replies 7 ·
Electric Field Calculation for Coaxial Plates with Holes
- superkraken
- · Replies 3 ·
What is the frequency of wire oscillations with a pellet placed in the middle?
- cdummie
- · Replies 11 ·
Isothermal Compression of a Ideal Gas and Distance
- elements
- · Replies 8 ·
How to derive this equation of missile launch?
- CarlosK
- · Replies 8 ·
Which Lorentz force form to use with transformed relativistic fields?
- Spanky200
- · Replies 3 ·
Finding Spectral Slope in dB/Octave for Hydrophone Data
- Clmz
- · Replies 5 ·
Keep mass vertically still using friction
- knc
- · Replies 1 ·
What is the relationship between string tension and frequency on a ukulele?
- Drizzy
- · Replies 5 ·
How do calculate the prob of being in a state in therm eq?
- eprparadox
- · Replies 1 ·
Finding Magnitudes of Forces in Similar Triangles
- afifbaha
- · Replies 10 ·
Why Does the Lap Time Get Shorter Each Lap?
- Sargon Akkad 45
- · Replies 26 ·
Period of Motion: Find Mass 0.85kg Piston's Period of Motion
- Coatesy
- · Replies 1 ·
How do I find the centre of gravity of this object?
- ipocoyo
- · Replies 1 ·
Path of the particle on inclined plane
- Vibhor
- · Replies 101 ·
When will the football players collide?
- Balsam
- · Replies 8 ·
How Does Heat Affect the Dimensions of Steel Sheets?
- Sejdi98
- · Replies 2 ·
Pipe Radius: Calculate Diameter of Middle Part
- vinamas
- · Replies 3 ·
Find Density Given Period of Orbit
- Just144Ice
- · Replies 12 ·
I finding the distance and the time
- Mary0524
- · Replies 2 ·
What does the magnetic flux depend on?
- Maike
- · Replies 8 ·
Tension of wire attached to 45-kg ball.
- BlueQuark
- · Replies 2 ·
Does an orbiting satellite speed up as it falls towards earth
- LotusTK
- · Replies 3 ·
Bucket of water spinning in vertical circle
- LotusTK
- · Replies 11 ·
Bob on cart: why is my momentum calculation giving the wrong max speed?
- cr7einstein
- · Replies 10 ·
Oscillating charges in an electric field
- WrongMan
- · Replies 12 ·
Will rope A break if rope B is pulled down gradually vs suddenly?
- arpon
- · Replies 16 ·
What materials coat the cathode to emit electrons?
- Aleena753
- · Replies 1 ·
Mass of an annulus with variable mass density
- Royalsamplerz
- · Replies 1 ·
Kinematics Problem: How High Was Humpty Dumpty's Fall?
- princessotes
- · Replies 3 ·
Finding Distance with given 2 speeds and a time
- Kushal Gurung
- · Replies 5 ·
Does Hall Voltage Disappear When Electric and Magnetic Forces Balance?
- Icy98
- · Replies 2 ·
Fish Apparent Position Using Refraction in Water
- physicsmaths1613
- · Replies 2 ·
How Much Charge Passes Through the Lamp in 1 Minute?
- Kofyebs
- · Replies 12 ·
Why is the Darcy friction factor used in mechanical engineering calculations?
- foo9008
- · Replies 1 ·
Kinematics-Motion in one dimension
- Googlu02
- · Replies 4 ·
Calculating Resistance in a Parallel Circuit without Voltage Information
- Aleena753
- · Replies 8 ·
Electric field due to a charged square
- WrongMan
- · Replies 10 ·
Minimum horizontal force needed so book does not fall?
- Kloud
- · Replies 13 ·
Find Internal Resistance From 2 Circuits w/ The Same Battery
- Aleena753
- · Replies 2 ·
How Does Changing the Temperature Affect a Hot Air Balloon's Buoyancy?
- Jimmy87
- · Replies 17 ·
Work done by gas through three stages of a cycle
- JFS321
- · Replies 5 ·
How does the distance between molecules affect temperature?
- TT0
- · Replies 8 ·
What is the correct equation for volume flow rate in an inclined pipe?
- foo9008
- · Replies 5 ·
Entropy Change - Irreversible Isothermal Compression
- Stephen Clarke
- · Replies 5 ·
Photoelectric effect at wavelength 492nm for mercury
- JulienB
- · Replies 4 ·
What Is the Power Developed by a Boat Overcoming Drag?
- Faiq
- · Replies 2 ·
Fractioned electrons, what do they mean?
- Raul Trejo
- · Replies 4 ·
Why do blocks have the same velocity at maximum spring compression?
- Nikstykal
- · Replies 2 ·
Coefficient of Friction of Fixed Atwood Pulley
- DrewCrew
- · Replies 1 ·
Why subtracting sphere volumes doesn't work for Gauss' Law
- RoboNerd
- · Replies 7 ·
Calculate the mass of the disk?
- alaa amed
- · Replies 6 ·
Applied torque/angular momemtum
- strawman
- · Replies 2 ·
What is the relationship between HGL and EGL at a pump?
- foo9008
- · Replies 2 ·
Centripetal force of rolling disc
- danny20051
- · Replies 3 ·
Question on finding work done on charge
- RoboNerd
- · Replies 2 ·
How much perspiration must vaporize per hour to dissipate extra energy
- Jtwa
- · Replies 2 ·
Why Do Charged Balls Accelerate Toward Negatively Charged Plates in a Capacitor?
- 2nafish117
- · Replies 23 ·
Relativistic motion of the bullet
- Caneholder123
- · Replies 8 ·
Difference between electric, electrical and electrostatic
- mystreet123
- · Replies 3 ·
Understanding Torque and Equilibrium in Simple Systems
- Alex126
- · Replies 8 ·
Finding coefficient of friction from deceleration on flat surface
- JJtheJetPlane
- · Replies 2 ·
Constant of Integration when calculating displacement
- RubiksMelia
- · Replies 6 ·
When do I use Biot-Savart Law vs. Ampere's Law?
- oogleshmoogle
- · Replies 2 ·
Calculating Velocity from a variable force.
- RubiksMelia
- · Replies 4 ·
Bear sliding down tree with friction work check
- GalacticSnipes
- · Replies 7 ·
Cart with 2 springs and a sliding mass
- Karol
- · Replies 20 ·
Solving Elastic Collision: V1' = -2.5 m/s, 5.9 m/s
- KoaDcT
- · Replies 4 ·
Two blocks connected with spring and pulley
- Ab17
- · Replies 1 ·
How much heat required to raise the temperature of potassium
- Asafish
- · Replies 1 ·
Projectile Velocity for Perpendicular Impact on an Inclined Plane
- Carbon123
- · Replies 3 ·
Distance needed to walk in order to hear local maximum
- yoloswag69
- · Replies 27 ·
How Does Buoyancy Affect a Ball's Movement in Water, Oil, and Moon Gravity?
- Joe55433454
- · Replies 5 ·
Archived Driven, Damped Oscillator; Plot x(t)/A
- oddjobmj
- · Replies 1 ·
What is the Direction of Friction Force for a Slowing Car?
- alaa amed
- · Replies 3 ·
Why does major head loss formula change from fLv²/2gD to fLQ²/3d⁵?
- foo9008
- · Replies 3 ·
Charge conservation on capacitor
- SANGEETAMILIND
- · Replies 1 ·
What are the dimensions for a, b, and c?
- NeerajKarthi
- · Replies 4 ·
What is the issue with calculating the gauge pressure of object B?
- ppppparker
- · Replies 1 ·
Electric Flux of Two Hemispheres with different radii
- Inveritatem
- · Replies 1 ·
Cylinder rolling thanks to external torque.
- bobon123
- · Replies 3 ·
Current induced in moving rectangular wire
- songoku
- · Replies 11 ·
Circuit problem Kirchkoff's law
- johnknee
- · Replies 5 ·
Voltage in secondary coil of transformer
- Physgeek64
- · Replies 13 ·