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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Person viewing back wall ends in a 0.35 m mirror in 6 m room
- Shibos
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If net work on a particle is zero, what can we say about its speed?
- m_scott
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Finding the De Broglie Wavelength of a Hydrogen Atom at Room Temperature
- xregina12
- · Replies 1 ·
Accelerating Protons in a Particle Accelerator
- pokeefer
- · Replies 3 ·
How Much Work is Needed to Bring Two Point Charges Together?
- rbraunberger
- · Replies 3 ·
Find wavelength for a standing wave
- jwxie
- · Replies 1 ·
Golf ball projected at 91.1 m/s landing 186 m away
- jtwilley
- · Replies 1 ·
Finding open circuit voltage in Thevenin equivalent circuit
- Saladsamurai
- · Replies 22 ·
Golf ball projectile motion: range and height at 43.5°
- BraindeadX64
- · Replies 1 ·
Kinematics without definite values
- JJ91284
- · Replies 1 ·
Distance traveled if a driver hits the brakes
- Naryeth
- · Replies 1 ·
Solving the Spacewalking Astronaut Problem
- turtledove
- · Replies 1 ·
What are (a) the magnitude and (b) the angle
- sagaradeath
- · Replies 2 ·
What Is the Total Distance Walked by the Woman in This Vector Problem?
- sagaradeath
- · Replies 7 ·
Why do Jack and Jill have equal speeds after he pushes her on skateboards?
- beancurd
- · Replies 4 ·
Momentum Multiple choice question
- bballcool34
- · Replies 1 ·
Finding final temperature when ice is added to hot water in an aluminum calorimeter
- kill00
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Instantaneous velocity and acceleration as functions of time
- jensson
- · Replies 9 ·
Straight line motion problems with kinematics
- man0005
- · Replies 5 ·
Special Relativity and atomic clocks
- keeperofthekeys
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Mass on a rotating turntable problem.
- btbam91
- · Replies 3 ·
Absolute error due to reaction time when timing with a stopwatch
- Ryker
- · Replies 2 ·
Problem with perfectly inelastic collisions.
- Cherryboba
- · Replies 1 ·
Showing power conservation in a circuit with resistor and voltage source
- Saladsamurai
- · Replies 11 ·
How Do Two Pucks Collide and Lose Kinetic Energy?
- Bri
- · Replies 8 ·
How does mass affect acceleration?
- conspicuous
- · Replies 1 ·
Projectile Motion with Quadratic Drag: Solving for Vertical Motion Equation
- gms7777
- · Replies 1 ·
Electric Fields due to a charged disk.
- help1
- · Replies 4 ·
Wavelength and destructive interference
- boogiepicker
- · Replies 1 ·
Finding wavelength of sound waves
- SilentBlade91
- · Replies 8 ·
Radiation Pressure and Solar Sail
- jmm5872
- · Replies 1 ·
Tension in a string tied between a wall and a lamp suspended from the ceiling
- thoughtclaw
- · Replies 8 ·
Finding the speed of a bowling ball based on the length of the lane and sound.
- Naryeth
- · Replies 3 ·
Rotating rod, inertia and torque
- jl9999
- · Replies 2 ·
Need some advice on this Electric Field question
- whatisphysics
- · Replies 3 ·
Maximum Potential and Charge of Generator
- 123yt
- · Replies 5 ·
Why Does Displacing a Charge Lead to Simple Harmonic Motion?
- CrypticWeirdo
- · Replies 1 ·
Questions on P-N junction circuits
- kkiddu
- · Replies 2 ·
How do I calculate the moment of load on an arm?
- SteelDirigibl
- · Replies 8 ·
Thermodynamics - Adiabatic Process
- catdog90210
- · Replies 1 ·
When is the Best Time to View the Galactic Centre from the UK?
- Owen-
- · Replies 1 ·
Direction of Force (Motor Effect)
- n0iz
- · Replies 1 ·
Calculating work with variable force
- forester404
- · Replies 2 ·
What Is the Maximum Torque on a Rotating Cylinder on a Moving Platform?
- Abhishekdas
- · Replies 12 ·
Minimum force necessary to push out a cork
- drunknfox
- · Replies 1 ·
Does a 1D Line Have Physical Width in Physics?
- Tarantula
- · Replies 1 ·
Rotational kinetic energy of jupiter
- gbabe197
- · Replies 1 ·
Finding weights W1 and W2 in a frictionless pulley system at equilibrium
- mrdoods
- · Replies 1 ·
What is the y-component of force on astronaut's jump on the Moon?
- mubeen916
- · Replies 1 ·
Electric flux through the surface of half a sphere?
- adelaide87
- · Replies 1 ·
Finding Maximum Height and Initial Velocity when only given angle and distance
- uncertain22
- · Replies 8 ·
What is the Tension in a Pulley System with Two Connected Masses?
- mottov2
- · Replies 2 ·
Grade 12 Rocket propulsion Question
- rock33y
- · Replies 2 ·
Energy consumption from 200 fluorescent lights over 16 hours
- Hellohi
- · Replies 9 ·
Heating Water by Shaking: Physics Problem Solved!
- hatingphysics
- · Replies 2 ·
What is the contact force between the blocks?
- Marioqwe
- · Replies 2 ·
Solving for Resistance in a Circuit
- whoopie88
- · Replies 1 ·
Finding coconut speed using conservation of energy
- XxphysicsxX
- · Replies 7 ·
Find Equivalent Resistance Across Rab: A Geometric Conundrum
- Digdug12
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Why Is the Average Velocity Zero After the 3rd Lap?
- Chica1975
- · Replies 6 ·
Balmer series for atomic hydrogen lie
- xregina12
- · Replies 1 ·
How Fast Does a Stone Shoot from a Rubber-Band Slingshot?
- XxphysicsxX
- · Replies 4 ·
What is the Direction of the Magnetic Field in a Circular Wire?
- cupid.callin
- · Replies 2 ·
Helium temperature when internal energy doubles
- Runaway
- · Replies 2 ·
Mass Spring Damper system with opposing springs
- helium4amc
- · Replies 5 ·
How Do You Apply Gauss's Law to a Non-Uniformly Charged Non-Conducting Cylinder?
- lcam2
- · Replies 6 ·
Finding the Direction of a Puck's Velocity on an Air Hockey Table
- mac227
- · Replies 1 ·
Electrostatic P.E. vs Gravitational P.E.
- zorro
- · Replies 2 ·
How much energy does it take to heat a block of ice
- Runaway
- · Replies 2 ·
What is the fundamental period of the function f(t)= sin6t + cos8t?
- Luongo
- · Replies 7 ·
Finding the Normal Force between two Crates
- pech0706
- · Replies 8 ·
Electric Field magnitude and distance
- Jm4872
- · Replies 2 ·
Coefficient of Friction between tires and racetrack
- pech0706
- · Replies 1 ·
Lab Exercise: How do I make a logarithmic curve linear?
- CarbonWater
- · Replies 2 ·
Electric Field along the x axis of a dipole
- Libohove90
- · Replies 1 ·
Electrical Force between plates(capacitor)
- haleycomet2
- · Replies 6 ·
Resistance and Increase in Current
- Peter G.
- · Replies 3 ·
Electric Field and Uniformly Charged Planes (conceptual)
- dimpledur
- · Replies 3 ·
Why Is Q Positive in Charge Balancing Equations?
- flyingpig
- · Replies 3 ·
The Super Quick Spin: What Fraction Stagger Right Through?
- bon
- · Replies 1 ·
Does a Meter Stick Oscillate Faster Than a Simple Pendulum?
- Lalasushi
- · Replies 7 ·
When to use which kinematic equation?
- 6FX
- · Replies 5 ·
Finding tension in a car's hanging air freshener at 4.45 m/s²
- weatherboy
- · Replies 3 ·
AS-level SUVAT / Newtonian physics-based question
- DJsTeLF
- · Replies 3 ·
What stays the same when a wave reflects from a mirror?
- adulapuram
- · Replies 4 ·
Electric flux through surface of a cube?
- m84uily
- · Replies 2 ·
Rutherford scattering and nuclear physics
- uae
- · Replies 10 ·
I with a physics problem about acceleration and velocity
- meandyou741
- · Replies 7 ·
Coefficient of kinetic Friction given velocity and distance.
- pech0706
- · Replies 3 ·
Current through starter motor and dead battery with jumper cables
- kdspuhler
- · Replies 1 ·
What is the charge in the middle of the square?
- Ammora
- · Replies 12 ·
Newton's third law pairs for a book resting on a table
- quark001
- · Replies 23 ·
Shortest period for a physical pendulum
- drunknfox
- · Replies 1 ·
Understanding Bertrand Russell's Definition of Number
- Barbie
- · Replies 1 ·
Minimum Power Needed to Accelerate Air from Rest to 15 m/s
- arpsachin2
- · Replies 10 ·
Finding the current and voltage across various resistors
- kdspuhler
- · Replies 1 ·
Electric field at some distance from a plate?
- m84uily
- · Replies 1 ·
Balancing a Plank on a Cylinder: Investigating Potential Energy Gain
- theloathedone
- · Replies 2 ·
Minimum Surface Charge Density for Spark Creation
- m84uily
- · Replies 3 ·
Relative speed of two particles
- w3390
- · Replies 4 ·