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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What is the Apparent Weight of a Passenger in Free Fall?
- sona1177
- · Replies 2 ·
What is the Velocity of a Wave Pulse Described by y(x,t)=De^-(Bx-Ct)^2?
- rizardon
- · Replies 1 ·
How fast was he moving when he hit the parked car?
- Derekj032
- · Replies 4 ·
Momentum graph given, find the launch angle, level ground
- Beamsbox
- · Replies 5 ·
Maximum Pulling Force for Two Blocks and a Cord
- mizzy
- · Replies 2 ·
Given total charge, find individual charges.
- psilovethomas
- · Replies 1 ·
Question regarding distance/mass/velocity
- sona1177
- · Replies 10 ·
Solving for Spring Constant in Hooke's Law with Charged Spheres
- psilovethomas
- · Replies 1 ·
Specific heat capacity of water in a 210 m waterfall
- yvan300
- · Replies 17 ·
Equilibrium. Vectors and resultant forces.
- Dekoy
- · Replies 2 ·
Two objects attached by pulleys
- sona1177
- · Replies 7 ·
Solving Problem with Springs Homework
- Tusike
- · Replies 11 ·
What is wrong with this answer?
- seven0sav
- · Replies 1 ·
Relation between mass and circular horizontal velocity
- Vals509
- · Replies 1 ·
Magnetic Fields and insulated wires
- Mitchtwitchita
- · Replies 3 ·
Calculating Work Done by a Gas Expansion
- IniquiTrance
- · Replies 1 ·
Why can't cables supporting traffic lights be made perfectly straight?
- mizzy
- · Replies 2 ·
Coulomb charge on 1g masses for force balance
- physics(L)10
- · Replies 10 ·
Elevator force with 100kg, distance X, time 10s
- HumorMe81
- · Replies 6 ·
Force needed to drag a 100N sled up a 20° slope at constant velocity
- mizzy
- · Replies 22 ·
Gauss's Law and a long thin wire
- yang09
- · Replies 1 ·
Conceptual simple harmonic motion question
- calgal260
- · Replies 5 ·
What Determines the Maximum Velocity of a Particle in a Given Energy System?
- PhMichael
- · Replies 6 ·
Relationship between Magnetic Field Strength and Time Constant in an RC Circuit?
- Mitchtwitchita
- · Replies 2 ·
Calculate Velocity and Height: Acceleration and Deceleration Examples
- russel0123
- · Replies 1 ·
Is Impulse Conserved in Collisions?
- Astar
- · Replies 4 ·
Finding unknown EMF in a circuit with power dissipation
- phykon
- · Replies 1 ·
How Long Does the Y Meson Last?
- Kommandant
- · Replies 2 ·
Velocity of a particle when acceleration based on displacement
- ivanallen
- · Replies 3 ·
Ratio of Sun's diameter to Moon's
- rtsphysics
- · Replies 1 ·
Finding signal travel time in the rocket frame with relativistic velocities
- novop
- · Replies 19 ·
Electrostatic force-Coulombs law
- Thrax
- · Replies 11 ·
How many people can a raft of 11 logs hold before sinking?
- shards5
- · Replies 1 ·
Simple harmonic motion (finding omega)
- SteroidalPsyc
- · Replies 5 ·
How Can a Magnetic Field Make a Copper Wire Levitate?
- Mitchtwitchita
- · Replies 17 ·
Is the order in which vectors are taken important in matrix diagonalisation?
- Benny
- · Replies 4 ·
Object moving on a plane (frictionless)
- Kumos
- · Replies 10 ·
Two bodies attracting via gravitation
- Rats_N_Cats
- · Replies 5 ·
Can the Newton's third law be violated in wires at right angles?
- hikaru1221
- · Replies 73 ·
Simple harmonic motion block question
- SteroidalPsyc
- · Replies 4 ·
Where is Particle B Located in Relation to the Center of Mass?
- dnjwilson
- · Replies 2 ·
What is electric field problem?
- physics(L)10
- · Replies 10 ·
Sliding distance of a crate after pushing force removed
- sona1177
- · Replies 5 ·
Initial Velocity of a falling object
- eNathan
- · Replies 33 ·
How Do You Calculate Net Torque Without Knowing the Center of Mass?
- shashusad
- · Replies 3 ·
Movement through an electric field
- roanoar
- · Replies 1 ·
Finding Tension in Cables: Solving a Loudspeaker Suspension Problem
- sona1177
- · Replies 5 ·
Equivalent torque of hollow shaft
- Deathfish
- · Replies 1 ·
Spherical cavity electric field
- GravityGirl
- · Replies 2 ·
Calculating Re and Ib for Transistor Saturation Region
- kliker
- · Replies 2 ·
Finding Vo in a PNP transistor circuit with R1=10kΩ and R2=30kΩ
- kliker
- · Replies 15 ·
Simple coefficient of friction problem
- jsel21
- · Replies 3 ·
What is its centripetal acceleration?
- mandy9008
- · Replies 5 ·
2 objects with pully. need distance
- dwilson89
- · Replies 2 ·
Calculating Helium Balloon Buoyancy Force at Launch and 2km Altitude
- JWSiow
- · Replies 3 ·
How far can 'x' travel at a speed of 'y' assuming 'z' external influences
- lilythmagebor
- · Replies 1 ·
Intensity of periodic sound waves
- ZzZerozZ
- · Replies 1 ·
Solving Inclined Plane Problem: Object Stopping Distance with Friction
- isohelp
- · Replies 2 ·
How Many Revolutions Do Tires Make Before Stopping?
- mandy9008
- · Replies 1 ·
A very stupid question, calculation problem
- cubejunkies
- · Replies 5 ·
Car braking with tire revolutions and angular speed
- mandy9008
- · Replies 1 ·
Centripetal force of an ice skater
- mandy9008
- · Replies 1 ·
Centripetal acceleration of rotating cylinders
- mandy9008
- · Replies 1 ·
What Are the Tensions in the Two Cables at Point C?
- Deathfish
- · Replies 1 ·
Calculate Average Velocity of a Truck
- tnneal
- · Replies 1 ·
What is the current through each ideal diode in this circuit?
- kliker
- · Replies 2 ·
How to Calculate Heat Input for a 30% Efficient Heat Engine
- Dx
- · Replies 8 ·
Find Rth in Thevenen Equivalent Circuit: R1,R2,R3,R4,R5,R6,Vth
- kliker
- · Replies 4 ·
Solving Frames of Reference Homework: Static/Kinetic Friction
- JWSiow
- · Replies 3 ·
What is the net work done on the box?
- JWSiow
- · Replies 8 ·
Thermodynamics- energy transfer
- urgent
- · Replies 2 ·
Charged Particles Moving in a Magnetic Field Ranking Task
- seto6
- · Replies 3 ·
Find the Point Where Electric Field is Zero: A Charge Problem
- Ruleski
- · Replies 2 ·
Conservation of Energy on an Inclined Plane with Spring
- bcca
- · Replies 2 ·
Calculating Speed and Time of Nolan Ryan's Baseball Orbit on the Moon
- JJ89
- · Replies 3 ·
Tip speeds of helicopter rotors with different diameters and rotation rates
- mandy9008
- · Replies 1 ·
Laser beam reflected off a plane mirror with angle α = 85°
- Kalibasa
- · Replies 2 ·
Solving Chandelier Problem: T1, Sine/Cosine Confusion
- cameuth
- · Replies 3 ·
Determine the initial speed of the bullet
- mandy9008
- · Replies 2 ·
Calculating Max. Distance of Block on Turntable Rotating at 33 1/3 rev/min
- JJ89
- · Replies 1 ·
Coulomb's Law and simple harmonic motion
- mickellowery
- · Replies 2 ·
Velocity of object sliding down incline, given gravity and the incline's height
- jstep
- · Replies 3 ·
Cut-off ratio definitions in the Diesel cycle
- Je m'appelle
- · Replies 2 ·
Normal reaction and contact force on 800kg caravan accelerating behind a car
- bluewood
- · Replies 7 ·
What is the maximum kinetic energy and potential energy of a swinging pendulum?
- tgpnlyt7095
- · Replies 2 ·
Two masses connected by pulley: finding m1 position when system stops
- JWSiow
- · Replies 6 ·
Why does the lower resistance bulb glow brighter in parallel circuits?
- JWSiow
- · Replies 3 ·
Why is silver good for making jewellery?
- Inka
- · Replies 2 ·
Capacitors and Power (two problems)
- JWSiow
- · Replies 4 ·
How do I calculate uncertainty and significant figures?
- jinx007
- · Replies 3 ·
Electric field and potential energy from two opposite charges at (0, 5)
- Ruleski
- · Replies 1 ·
Optics [refraction] - What is the actual angle from the surface of the water
- Paulo Serrano
- · Replies 4 ·
Calculate Battery Energy Delivery Rate for Parallel Circuit
- Ruleski
- · Replies 4 ·
Transverse wave snapshot times and pulse reflection on fixed string
- mfu
- · Replies 6 ·
Simple Circuit Diagram (Ohm's Law Application)
- exitwound
- · Replies 14 ·
Battery (amp hours, total charge, total current)
- tony873004
- · Replies 6 ·
Calculating Momentum for a Malfunctioning Space Probe
- mandy9008
- · Replies 1 ·
Find the velocity of each object after the collision
- mandy9008
- · Replies 15 ·
Finding internal energy change in a adiabatic compression process.
- tralelale1234
- · Replies 3 ·
Finding velocities of two people on skates
- mandy9008
- · Replies 5 ·