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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Finding distance traveled by bullet with velocity components
- jamiebean
- · Replies 8 ·
Deceleration of rocks sliding up a hill
- jamiebean
- · Replies 4 ·
A mass being pushed up an inclined plane
- jamiebean
- · Replies 1 ·
Pulling masses up a tilted plane with kinetic friction
- jamiebean
- · Replies 1 ·
What is meant by multiplication in physics?
- SSG-E
- · Replies 10 ·
Kleppner 7.10 — Using a gyroscope to measure latitude
- LCSphysicist
- · Replies 8 ·
Electric dipole moment vs electric current dipole moment
- Hamsi
- · Replies 1 ·
To find the closest approach of two ships
- gnits
- · Replies 2 ·
What does a force of zero indicate about the total force acting on a particle?
- apathetic_operator
- · Replies 3 ·
New amplitude of a spring-mass system when a 2nd mass falls on the first
- songoku
- · Replies 8 ·
Calculating Force and Torque for Linear motion (image provided)
- Cadormare
- · Replies 1 ·
Confirming Green's function for homogeneous Helmholtz equation (3D)
- PhDeezNutz
- · Replies 1 ·
Direction of resulting displacement
- jamiebean
- · Replies 2 ·
How do you calculate displacement and direction in spelunking cave explorations?
- jamiebean
- · Replies 1 ·
Force to make 2 blocks move relative to each other at constant speed
- songoku
- · Replies 2 ·
Finding torque equations for a bottle opener problem
- Soicowboy
- · Replies 24 ·
A string over a pulley with two hoops wound like spools on each end
- pleasantresult
- · Replies 9 ·
Calculating Minimum Power for Perception of Radiation from a Point Source
- jasmin_89
- · Replies 2 ·
Finding currents using Kirchhoff's laws
- Bolter
- · Replies 3 ·
Conclusion about wave propagation in SR given L dot S = N = L' dot S'
- PhDeezNutz
- · Replies 4 ·
Is there a proof about angular momentum conservation?
- LCSphysicist
- · Replies 5 ·
Calculating velocity from the position versus time graph
- fmiren
- · Replies 20 ·
Show that Tv^(R/c_v) = constant
- romanski007
- · Replies 1 ·
Why are Mo-95 and La-139 more stable than U-235?
- Bolter
- · Replies 1 ·
How Far Would a Galaxy Be with a Speed of c?
- PhDeezNutz
- · Replies 1 ·
Inelastic collision between mass and stick: rotation and swing height
- Den tredje
- · Replies 10 ·
Waves and vibrations on a string
- Diku Khanikar
- · Replies 2 ·
Relating polynomial coefficients to position, velocity and acceleration
- kalcorn
- · Replies 13 ·
Lab Experiment: Estimate the error in these measurements of Ohm's law
- ORF
- · Replies 2 ·
Distance traveled and period of a mass - spring - pulley system
- songoku
- · Replies 13 ·
Wave propagation - Oblique Incidence
- Ian751
- · Replies 1 ·
Free body Diagram of a Plank resting on two Cylinders
- Stewie117
- · Replies 14 ·
Proving that mass is an additive quantity
- Nirmal Padwal
- · Replies 6 ·
Why should arguments of certain functions be dimensionless?
- Nirmal Padwal
- · Replies 9 ·
What is the Period of a Near Rectilinear Orbit with Zero Minor Axis?
- LCSphysicist
- · Replies 7 ·
Why do planets have elliptic orbits?
- LCSphysicist
- · Replies 1 ·
Detecting the Alignment of an Inf. Plane Capacitor: A Paradox?
- qwereqe
- · Replies 3 ·
Can Mixed Units in Ratios Be Converted and Used Accurately in Calculations?
- photon184739
- · Replies 6 ·
Plot the space-time diagram of a photon and a spaceship
- pepediaz
- · Replies 3 ·
Energy of n-Photons: Find Equation
- HeisenbergC
- · Replies 1 ·
Find the instant of the collision
- LCSphysicist
- · Replies 16 ·
Plot a photon on a space-time diagram
- pepediaz
- · Replies 14 ·
Calculating the Moment from a Different Vantage Point
- Tymofei
- · Replies 4 ·
Torque Balancing and Virtual Work: Solving for Equations in Force Balancing
- cupcake_rainbow
- · Replies 3 ·
What does P mean in gravitational potential energy equations?
- LCSphysicist
- · Replies 2 ·
Can a Single Point Grapefruit Create an Interference Pattern?
- stuDYING
- · Replies 3 ·
Torque on an atom due to two infinite lines of charge
- nfepow
- · Replies 2 ·
Calculating Electric Field for 4 Point Charges in a Square Configuration
- nfepow
- · Replies 3 ·
How are v1, v2, and ωR related in a ring constraint equation?
- Gourab_chill
- · Replies 4 ·
[AC Circuit] How do we convert from the time domain to the phasor domain?
- Special One
- · Replies 5 ·
Electric circuit -- Ohm's second law
- MARIAM507
- · Replies 3 ·
Earth's satellite and its first space speed
- Friendlyplus
- · Replies 1 ·
Engine working between multiple temperature baths worse than Carnot
- Sat D
- · Replies 1 ·
Net Gravitational force on an object
- Jaccobtw
- · Replies 1 ·
How do I find the frequency, speed and direction of a wave
- therealist
- · Replies 4 ·
Origin of Potential Energy - 65 Characters
- Guillem_dlc
- · Replies 8 ·
Modulus of the electric field created by a sphere
- Guillem_dlc
- · Replies 5 ·
Calculation Involving Thermodynamics, Gravitation and Fluid mechanics
- Ayesha02
- · Replies 8 ·
Mutual inductance between two adjacent circuits
- sciencec
- · Replies 24 ·
Potential at a Point: A Question of Solutions
- Guillem_dlc
- · Replies 2 ·
How can I solve for the x force component in this force expression?
- Jorzef
- · Replies 1 ·
Two masses on a pulley system with two rotating cylinders and no-slip constraint
- Hohen
- · Replies 16 ·
Period of oscillating system with two masses and pulleys
- Hohen
- · Replies 17 ·
Magnetic field in a solenoid using sin(θ₂) − sin(θ₁) formula
- Special One
- · Replies 1 ·
How to get the magnetic moment for this loop?
- Gourab_chill
- · Replies 9 ·
Help calculating an exercise
- Poriya
- · Replies 9 ·
Solid disk rolling down an inclined plane -- Some conceptual questions
- LCSphysicist
- · Replies 9 ·
Two carts are held together, and when released they are pushed apart by a spring
- TjGrinnell
- · Replies 7 ·
Ball collides with a door and pushes it open
- TjGrinnell
- · Replies 1 ·
How do calculate this moment of inertia?
- LCSphysicist
- · Replies 3 ·
Capacitance of a spherical capacitor
- Guillem_dlc
- · Replies 4 ·
How to determine if a spring has mass in a problem
- TjGrinnell
- · Replies 9 ·
Electric field from charged disk and point charge
- Guillem_dlc
- · Replies 7 ·
What is the Correct Radius and Mass of Earth for Satellite Orbit Calculations?
- TjGrinnell
- · Replies 1 ·
Calculating Moment of Inertia from Ball Accelerations
- Jonas
- · Replies 1 ·
N-type semiconductor -- calculate the doping level
- bob0909090909
- · Replies 1 ·
How to interpolate the correction factor F
- anonymous99
- · Replies 1 ·
Rotational motion (conceptual error?)
- aspodkfpo
- · Replies 3 ·
A rocket and its gas exhaust velocity
- Guillem_dlc
- · Replies 15 ·
A hypothetical isotropic antenna
- Sze Wen
- · Replies 8 ·
Mass of water given only power and density
- cheekyhouidini
- · Replies 1 ·
Is There a Better Way to Demonstrate Force on a Current-Carrying Wire?
- VitaminK
- · Replies 4 ·
Charged capacitor connected to an uncharged capacitor
- Bolter
- · Replies 1 ·
Vectors Question using Calculus -- Swimmer crossing a River
- ttpp1124
- · Replies 30 ·
Particle motion in a magnetic field
- etotheipi
- · Replies 3 ·
Justifying the constant of integration in compressibility equations
- romanski007
- · Replies 2 ·
Finding little g using an inclined plane
- Ahmed Mutaz
- · Replies 9 ·
Trajectory in a non inertial frame
- LCSphysicist
- · Replies 5 ·
Truck with attached inclined plane and a block on the incline
- rakailee
- · Replies 7 ·
What is the orbital radius of a muon captured in the n=1 ground state of Carbon?
- eedftt
- · Replies 13 ·
How Do You Calibrate a Meter Stick?
- ajhorst99
- · Replies 1 ·
Why Do Spring Constants Differ Between Hooke's Law and Oscillation Method?
- VitaminK
- · Replies 7 ·
Using Effective Mass to find the accelerations of 3 masses connected by pulleys
- Crystal037
- · Replies 25 ·
Bohr Model - Absorbing a Photon with Enough Energy to Ionize the Atom
- flintstones
- · Replies 4 ·
Understanding How to Scale an Atom's Nucleus
- Rakshitgarg1709
- · Replies 1 ·
Is the time independent Schrodinger equation commutative?
- etotheipi
- · Replies 9 ·
Longitude contraction / time dilatation
- pepediaz
- · Replies 17 ·
I can't comprehend impulse = momentum
- Pushies
- · Replies 3 ·
Solve my Mechanical Motion Puzzle: 18in(7lbs)
- around86
- · Replies 5 ·
Refrigerant - mass flow, power, COP
- sci0x
- · Replies 11 ·