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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Projectile launched up an inclined plane
- simphys
- · Replies 20 ·
How should I calculate the distance D with two different motions?
- simphys
- · Replies 7 ·
Work done on dipole and potential energy in uniform electric field
- ShaunPereira
- · Replies 4 ·
Why are three variables divided by 2 in this pulley constraint equation?
- guyvsdcsniper
- · Replies 4 ·
How Do Pulleys Enhance Efficiency in Two Block Problems?
- rudransh verma
- · Replies 13 ·
Velocity, traveling distance and friction force on a sliding object
- Javad
- · Replies 53 ·
Is Heat Transfer between 2 Walls Independent of Temperature Assumptions?
- Shreya
- · Replies 2 ·
Calculating attenuation necessary to reduce number of photons
- kevincb672
- · Replies 8 ·
Where do the 1/10 and 1/20 coefficients come from in charge distribution
- Istiak
- · Replies 7 ·
Max Angle of Mass on Incline Surface
- a_r_part
- · Replies 5 ·
Period of a spring-mass oscillator with damping
- dayspassingby
- · Replies 2 ·
Why are v and a decreasing as the oribit radius increases?
- simphys
- · Replies 19 ·
How Does Friction and Acceleration Affect Tension in a Three-Block System?
- rudransh verma
- · Replies 18 ·
Calculating Work Done by Gas at Constant Pressure
- pizzamakeren
- · Replies 2 ·
How much time does it take to warm up water?
- pizzamakeren
- · Replies 15 ·
Inclined plane with pulley and spring
- lorenz0
- · Replies 10 ·
Proving Sin(120) = Sin(60) with Trigonometry
- simphys
- · Replies 3 ·
Why doesn't coefficient of friction decrease when normal force increases?
- rudransh verma
- · Replies 13 ·
Hydraulic lifting force of this arrangement of pipes
- ucody0911
- · Replies 11 ·
Finding potential at a point in capacitor
- Sunwoo Bae
- · Replies 2 ·
I need an experiment about surface tension
- diogomcs
- · Replies 7 ·
Finding Lagrange Point L2: Gravity and Harmonics
- jackal123
- · Replies 2 ·
Two Blocks, a Pulley and an Inclined Plane
- rudransh verma
- · Replies 44 ·
Optics. A laser beam is refracted in a piece of glass.
- yglo98
- · Replies 1 ·
Calculations for a Hammer Throw Event
- knapklara
- · Replies 9 ·
What is the relationship between angle and static friction?
- Javad
- · Replies 24 ·
What Factors Affect the Acceleration of Hanging Bodies on a Pulley?
- rudransh verma
- · Replies 49 ·
Car's maximum acceleration on a road is proportional to what?
- rudransh verma
- · Replies 94 ·
Evaluating a cycle [Thermodynamics]
- guyvsdcsniper
- · Replies 9 ·
Change in internal energy of a cylinder
- guyvsdcsniper
- · Replies 8 ·
A sphere rolling without slipping down a hemisphere
- lorenz0
- · Replies 17 ·
Estimating the velocity of seismic waves through an idealized Earth
- Remixex
- · Replies 6 ·
Triangles inside a circle to represent raypaths inside an ideal Earth
- Remixex
- · Replies 9 ·
Evaluation of heat and work for a stirred liquid
- guyvsdcsniper
- · Replies 8 ·
Velocity along the cylinder axis
- Istiak
- · Replies 18 ·
Work to bring a charge to the center of two quarter circles
- lorenz0
- · Replies 4 ·
Comparing acceleration times in stage 1 versus free fall
- simphys
- · Replies 28 ·
Electrons and their little role in nuclear physics
- Hall
- · Replies 1 ·
Finding the distance between two nuclei right after fission
- guyvsdcsniper
- · Replies 13 ·
Is the image upright for a reflective spherical balloon using ray tracing?
- lorenz0
- · Replies 1 ·
Using Kirchhoff's Rule - Theory question
- Sunwoo Bae
- · Replies 8 ·
Contact and electromagnetic force
- rudransh verma
- · Replies 47 ·
Inverse square law of gravitation and force between two spheres
- ShaunPereira
- · Replies 8 ·
Three-phase voltage inverter (some questions)
- polibuda
- · Replies 1 ·
Double Differentiation and Acceleration in a Four Pulley System
- rudransh verma
- · Replies 6 ·
Linear systems: Tmax = Umax is not making sense
- LT72884
- · Replies 4 ·
Plotting the graph of Friction Force vs. time (Laws of motion)
- SpectraPhy09
- · Replies 1 ·
Simple kinematics question -- Riding a bicycle race in two different gears
- knapklara
- · Replies 12 ·
Why Does the Second Block Accelerate Without an Apparent Force?
- rudransh verma
- · Replies 15 ·
PV Graph Question: Internal Energy Not Zero?
- bluesteels
- · Replies 1 ·
Finding where kinetic energy equals potential energy in a spring system
- Mr Smailes
- · Replies 42 ·
Electric field from potential of semicircular charge distribution
- iochoa2016
- · Replies 11 ·
Two forces acting on an object given in vectors - SOLVED
- runningphysics
- · Replies 1 ·
Maxwell's Capacitor argument for a time independent Current
- Shreya
- · Replies 2 ·
A system of two bodies and wall
- rudransh verma
- · Replies 32 ·
Boiling a glass of water in a bowl of water - tricky question?
- Physics Slayer
- · Replies 21 ·
Find force on a particle at time t
- Istiak
- · Replies 13 ·
Find focal length of electron for a parabolic motion
- Istiak
- · Replies 3 ·
A uniformly charged rotating sphere does not radiate, why not?
- wykk
- · Replies 4 ·
Fields (Gravitational fields) -- Escape Velocity from the Moon
- jellybean-spider
- · Replies 5 ·
Tension on both sides of the rope is supposed to be the same?
- Monsterboy
- · Replies 11 ·
Can You Solve This Motion Problem Using a Simple Trick?
- rudransh verma
- · Replies 103 ·
Two masses connected by a rope on a pulley on a ramp
- runningphysics
- · Replies 1 ·
Magnetization of ferromagnetic material
- lorenz0
- · Replies 8 ·
Find the contraction of angles seen by an observer
- guyvsdcsniper
- · Replies 38 ·
Bullet accelerating through rifle barrel with time-dependent acceleration
- EishaR
- · Replies 2 ·
Minimizing the voltage drop across a capacitor (solution shown)
- Sunwoo Bae
- · Replies 2 ·
Net force and position of objects in space
- dayspassingby
- · Replies 2 ·
Find electric field inside a material
- Istiak
- · Replies 2 ·
An iron cylinder inside a solenoid
- lorenz0
- · Replies 4 ·
Bound charges of a block (top and bottom surface)
- happyparticle
- · Replies 35 ·
Probability of finding a pion in a small volume of pionic hydrogen
- Mr_Allod
- · Replies 6 ·
Why is only one cube's area used in the pressure force calculation?
- Woopa
- · Replies 1 ·
Weighted average score for exams and quizzes
- Eagle4112001
- · Replies 8 ·
Find out velocity of an observer (relativity)
- Istiak
- · Replies 13 ·
Force on three Bolts holding up a Jet Engine
- mopit_011
- · Replies 2 ·
Special relativity - measure of a rod and simultaneity
- Gom
- · Replies 2 ·
The polarization charge density ##\rho##p in a charged dialectric
- happyparticle
- · Replies 1 ·
Which object is moving to the right with a constant speed?
- Ineedhelpwithphysics
- · Replies 33 ·
Position of the image of an object placed in water
- lorenz0
- · Replies 8 ·
Solving Motion Equations with Integration
- runningphysics
- · Replies 2 ·
Charge distribution on a conducting sphere with a hemispherical bulge
- Daniel777
- · Replies 18 ·
Why Is My Calculation of Heat Energy Incorrect?
- Noawun
- · Replies 3 ·
A Projectile problem -- Time to reach 1/3 of the max height
- rudransh verma
- · Replies 10 ·
Intensity Distribution of Superposition of 2 Waves
- warhammer
- · Replies 11 ·
A disconnected capacitor with two dielectrics in parallel
- lorenz0
- · Replies 8 ·
Why is my rocket total flight time calculation wrong?
- ColeridgianHam
- · Replies 4 ·
Understanding Distance and Displacement on Velocity-Time Graphs
- rudransh verma
- · Replies 25 ·
How Does Acceleration Affect Velocity in 1D Motion?
- rudransh verma
- · Replies 21 ·
Find the equation of this magnetic field
- Istiak
- · Replies 6 ·
Find the energy which was released when the 'Death Star' was destroyed
- Istiak
- · Replies 6 ·
Work and kinetic energy comprehension question
- Lina
- · Replies 4 ·
Why does heat transfer use final minus initial instead of initial minus final?
- bluesteels
- · Replies 1 ·
Invariant mass and energy balance
- R3ap3r42
- · Replies 4 ·
How do you calculate free fall with equal masses?
- A dummy progression
- · Replies 15 ·
Find the total power developed in the circuit given the readout
- PhDeezNutz
- · Replies 13 ·
Is Your Reasoning on Track? Get Feedback and Graph Analysis!
- A dummy progression
- · Replies 7 ·
The velocity of a movable block that is penetrated by an arrow
- PrincessPeach
- · Replies 16 ·
Tension in a pulley system pulled at an angle
- erensatik
- · Replies 3 ·
Thermal Physics Problem -- Dropping a hot mass of iron into 20C water
- Woopa
- · Replies 4 ·