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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Block-pulley system and kinetic energy
- Kennedy
- · Replies 1 ·
Find Coefficient of Restitution with just height of the ball after one bounce
- x2017
- · Replies 9 ·
Millikan Oil Drop Experiment: Determining Elementary Charge
- Sandro Romualdez
- · Replies 2 ·
String with masses on either end being pulled from the center
- CSPhysics
- · Replies 5 ·
Connecting two charged capacitors
- Eitan Levy
- · Replies 3 ·
Electrostatics? Magnitude and direction of a magnetic field
- Sandro Romualdez
- · Replies 4 ·
The energy lost in discharging a capacitor
- Pushoam
- · Replies 16 ·
Conduction band, valence band and Fermi energy
- Pushoam
- · Replies 8 ·
How Does a Switch Affect Voltage and Current in a Circuit?
- Eitan Levy
- · Replies 8 ·
The effect on a photocurrent of reducing the frequency of photons
- Pushoam
- · Replies 3 ·
Proper usage of trig functions in force problems
- Matt Armstrong
- · Replies 3 ·
Average tension force acting on a simple pendulum
- Pushoam
- · Replies 32 ·
Calculating Maximum Bending Moment and Radius of Curvature for a Round Beam
- Confusedbiomedeng
- · Replies 3 ·
Average velocity with changing acceleration from t=5 to t=11 s
- Kennedy
- · Replies 3 ·
Finding Initial Temperature Entropy and Heat Exchange
- Luke Strand
- · Replies 1 ·
Circular Motion - Hanging object swinging around
- Alex126
- · Replies 7 ·
Torsion and stress on a beam question
- Confusedbiomedeng
- · Replies 9 ·
The length of a pendulum that is equivalent to a rocking hemisphere
- chriskh
- · Replies 5 ·
Object on rotating cone surface: finding rotation period
- Alex126
- · Replies 20 ·
Movement of a Body on horizontal surface
- inv4lid
- · Replies 4 ·
Show that v < 5.5. How can we prove that?
- lioric
- · Replies 29 ·
Understanding Capacitor Voltage and Capacity in a Circuit
- Eitan Levy
- · Replies 13 ·
Pressure of a piston cylinder device after heated
- EastWindBreaks
- · Replies 3 ·
Mechanics - Hooke's law and energy conservation
- HopelessStudent
- · Replies 1 ·
Normal Force on Car at Top of Rounded Hill
- y90x
- · Replies 2 ·
Finding final pressure in heated piston-cylinder with saturated water
- EastWindBreaks
- · Replies 20 ·
Tension force of block and rope
- Wes Turner
- · Replies 25 ·
Find the current I in this electrical circuit
- Helly123
- · Replies 52 ·
Do ideal gases move at the same speed?
- Lori
- · Replies 5 ·
Finding a convergent subsequence of the given sequence
- Maddiefayee
- · Replies 9 ·
Radial acceleration of car at Indianapolis 500 halfway through arc
- y90x
- · Replies 7 ·
Is the Correct Option for Magnetic Field Homework Statement (d)?
- Pushoam
- · Replies 2 ·
What is the Needed Coefficient of Static Friction for a Car on a Banked Curve?
- y90x
- · Replies 16 ·
Find the tension force in each pair
- Adris
- · Replies 7 ·
What does sat. stands for in thermodynamic?
- EastWindBreaks
- · Replies 2 ·
(Rotational Motion) Calculating maximum velocity.
- KANY3EUWEST
- · Replies 2 ·
Finding the angular velocity of a rotating rod
- LuigiAM
- · Replies 7 ·
What are the speeds of two Jupiter sized planets when they collide?
- AbigailG
- · Replies 5 ·
Gravitational problem, spacecraft orbital period
- y90x
- · Replies 1 ·
Time to travel through Earth between surface points
- Pushoam
- · Replies 6 ·
Which statements about semiconductor doping are correct?
- songoku
- · Replies 9 ·
Work Done by Gravity - Positive or Negative
- axer
- · Replies 6 ·
Something I don't understand about kirchhoff's laws
- Eitan Levy
- · Replies 17 ·
Flux of a point charge through a circle
- Pushoam
- · Replies 4 ·
Relation between chemical potential and S,V,T,P
- Pushoam
- · Replies 3 ·
Why does a larger synchronous generator have a better rating
- Cocoleia
- · Replies 1 ·
Angular momentum about a parallel axis O'
- lawsonfurther
- · Replies 5 ·
Equilibrium of forces (angle of road so car will not skid)
- LuigiAM
- · Replies 14 ·
Rod swinging and hitting a ball
- erfz
- · Replies 31 ·
Violin string fingered at 1/3 length and out-of-phase speaker interference
- snowcrystal42
- · Replies 6 ·
The angle and distance of a projection - Grade 11 physics
- CAT 2
- · Replies 4 ·
Rate of Change of Magnetic Field in Square wire loop
- CDreyer23
- · Replies 5 ·
Angle of Displacement of Rod Hit by Bullet in Time
- Gena
- · Replies 1 ·
Cylinder rolling on fixed cylinder
- Snehit
- · Replies 2 ·
The amount of radioactive substance after 38 days
- Pushoam
- · Replies 4 ·
Can Conservation of Energy Alone Solve Momentum Problems?
- aa_o
- · Replies 3 ·
Refractive index of electron beam in potential step
- Pushoam
- · Replies 1 ·
Why is surface area included in Q=mcΔT for solar heating?
- axer
- · Replies 5 ·
Flux through an infinite plane due to a point charge
- Pushoam
- · Replies 2 ·
Cylinder rolling on fixed cylinder without slipping
- Snehit
- · Replies 3 ·
Is the 2nd Law of Thermodynamics a Fundamental Law or a Statistical Principle?
- Pushoam
- · Replies 1 ·
Relation between E and B of em radiation
- Pushoam
- · Replies 1 ·
Angular Acceleration Homework: 962 Revolutions in 10 Secs
- Wes Turner
- · Replies 1 ·
Elec. flux through the top side of a cube with q at a corner
- Pushoam
- · Replies 4 ·
Distance between train and its carriage
- Pushoam
- · Replies 6 ·
Wavelength of em radiation of H - atom
- Pushoam
- · Replies 2 ·
How does the conservation of electrostatic energy work?
- Coderhk
- · Replies 1 ·
Change in entropy per mole for an isothermal process
- Pushoam
- · Replies 1 ·
Calculating for a distance including vi, vf, time, and Ff
- varoney
- · Replies 1 ·
How to find specific volume given temperature?
- EastWindBreaks
- · Replies 9 ·
Newton's Rings and Thin Film Interference
- Abu
- · Replies 9 ·
Finding Energy Levels in Infinite Wells: College Physics 2
- Noreturn
- · Replies 1 ·
Speed at the top of the loop with energy loss from friction
- miyayeah
- · Replies 7 ·
Finding the Minimum Thickness for Destructive Interference in Thin Films
- Sofija Zdjelar
- · Replies 7 ·
Calculating Projectile Distance on Pluto
- y90x
- · Replies 13 ·
Find an Expression for the Frequency - Pendulum
- AbigailG
- · Replies 4 ·
Why Is My Calculation for the Time to Drop an Object Incorrect?
- aa_o
- · Replies 7 ·
Calculating Potential Energy in a Rotary Mousetrap Spring System
- JLT
- · Replies 3 ·
Semi-infinite slab of charges -- find E and charge density
- allison west
- · Replies 8 ·
Change in temperature for a system with entropy change
- MalcolmMck
- · Replies 4 ·
Conservation of energy/Angular momentum for elastic collison
- Oliver Legote
- · Replies 5 ·
Rotational equilibrium problem (ladder against a wall)
- LuigiAM
- · Replies 4 ·
What is the combined resistance here?
- Eitan Levy
- · Replies 6 ·
What are the Individual Capacitor Charges and Voltage in a Circuit?
- Shiba Tatsuya
- · Replies 7 ·
Maximum height of a spring toy launched at an angle
- CAT 2
- · Replies 15 ·
How do I find the uncertainty in this specific scenario?
- Hao2k
- · Replies 1 ·
Quantum Jump that produces an infrared line?
- MarilizeLegajuanas
- · Replies 2 ·
Wire loop falling out of a magnetic field
- TopherF
- · Replies 16 ·
Heat engines working over time
- Matt Armstrong
- · Replies 7 ·
Velocity to land 1/4, 1/2, and around Earth
- supernova88
- · Replies 5 ·
EM wave power density in lossy dielectric at 2.45 GHz
- derek l
- · Replies 2 ·
Electric field of two conducting concentric spheres
- MarcusNTran
- · Replies 18 ·
Is there work for object moving at a constant speed?
- miyayeah
- · Replies 6 ·
Why Is the Calculated Wavelength Incorrect in This Hydrogen Atom Problem?
- Suyash Singh
- · Replies 2 ·
When to use 1/2 mr² vs mr² for moment of inertia?
- Zheng_
- · Replies 3 ·
Constant acceleration except time?
- Lori
- · Replies 5 ·
Why is mgh equal to mgx in this conservation of energy problem?
- Lori
- · Replies 1 ·
Specific Heat Problem, not getting the correct answer
- HRubss
- · Replies 5 ·
Centripetal force at different positions in vertical circular motion
- Lori
- · Replies 5 ·