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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Electric potential and potential energy
- dpogre
- · Replies 2 ·
Bridge Circuit (resistors, whoo)
- GDGirl
- · Replies 6 ·
Determining Time for Nut to Go Through Taper with Oversizing Machine
- noobies
- · Replies 6 ·
Astronaut Momentum: Return to Ship in 7.43s
- Joe91090
- · Replies 3 ·
Calculating the Depth of a Well Using the Speed of Sound
- mrross
- · Replies 1 ·
Rocket Acceleration: Finding the Unknowns with Known Time and Distance
- frostking
- · Replies 3 ·
How Do You Calculate Angular Momentum in a Two-Particle System?
- atuntun
- · Replies 2 ·
Relative Motion using Rotatin Axis
- joemama69
- · Replies 1 ·
How Do You Achieve Force Equilibrium on a Moving Object?
- starhallie
- · Replies 2 ·
Calculate Ambient Noise Intensity Increase: 86.0 dB - 85 dB
- collegegirl13
- · Replies 1 ·
Max Contraction of Two Moving Bodies with Spring Attachment
- Dweirdo
- · Replies 8 ·
How Does Wire Diameter Affect Electrical Resistivity?
- cemx
- · Replies 9 ·
Instantaniouse center of 0 velocity
- joemama69
- · Replies 10 ·
What is the Time t for a Train to Travel through a Tunnel between LA and NY?
- onsem
- · Replies 8 ·
Heres a tough sign question with equilibrium that will be on the test.
- davie08
- · Replies 7 ·
Im ready for this test except I cant get started on these 2 questions.
- davie08
- · Replies 12 ·
What is the Correct Way to Calculate the Work Function of a Material?
- Centaginous
- · Replies 2 ·
Am I using the correct formula?
- jayjay112
- · Replies 1 ·
What is the speed of a skier at the bottom of a circular hill?
- RedPhoenix
- · Replies 6 ·
Answer: The mass of the piston is 16.2 kg.Weight of a Piston: 16.2 kg
- james brug
- · Replies 1 ·
What Formula Applies to a Boxer's Punch?
- tommyleehutch
- · Replies 17 ·
Physics Lab Project: Design and Build an Electric DC Motor
- Rastabot
- · Replies 1 ·
Stuntman swinging down and sliding with villain after inelastic collision
- Spraypaint
- · Replies 1 ·
Hypothetical Brain Teaser about Relative motion and the finite speed of light
- k-hursh
- · Replies 8 ·
Given the mass of a star, determine Kepler's constant.
- Solidearth
- · Replies 1 ·
Doppler Effect of a blown whistle
- lha08
- · Replies 5 ·
Thickness of Film:Constructive Interference @ 547nm, n=1.31
- hardwork
- · Replies 2 ·
What Should Be the Focal Length of Kat's Corrective Contact Lenses?
- hardwork
- · Replies 1 ·
Given properties of nucleus, find its atomic number, mass, and element symbol.
- einsteinoid
- · Replies 2 ·
How to Convert Different Forms of Energy: Examples and Equations
- amandamolegir
- · Replies 1 ·
How Does a Skater's Rotational Kinetic Energy Change When He Lowers His Arms?
- unteng10
- · Replies 3 ·
Compressed Gas Expansion: Energy Transfer and Work Done
- fball558
- · Replies 3 ·
Chair pulled across floor with friction
- davie08
- · Replies 21 ·
What's the Critical Angle of Plastic in Water?
- xswtxoj
- · Replies 3 ·
Modiefied Atwood Machine Problem.
- Ogir28
- · Replies 1 ·
What Factors Affect the Number of Emission Lines Produced by an Atom?
- hellogirl88
- · Replies 1 ·
How Fast Does the Block Move After the Bullet Embeds?
- Spraypaint
- · Replies 1 ·
Forces on a ladder with a person climbing it on icy ground
- Scrambler
- · Replies 5 ·
What is the largest mass that can be placed on the spring
- jaron
- · Replies 1 ·
How Does Changing Shape Affect Temperature and Ice Thickness Calculation?
- Zekexx
- · Replies 1 ·
Finding gravitational potential energy
- jaron
- · Replies 2 ·
How Do Forces Affect the Deformation and Young's Modulus of a Book?
- Schoomy
- · Replies 1 ·
What Determines the Kinetic and Potential Energy Levels in a Punted Football?
- amandamolegir
- · Replies 9 ·
Theory Based Kinetic Energy Question
- mike_302
- · Replies 8 ·
Calculating Oxygen Leakage from a Balloon
- fball558
- · Replies 2 ·
Solve Inclined Plane FNET Homework: Time to Stop Skier
- learningisfun
- · Replies 9 ·
Why does period increase with amplitude in simple pendulum?
- llauren84
- · Replies 2 ·
RLC Circuit: Find Missing Component - Inductor?
- xswtxoj
- · Replies 2 ·
How Many Electrons Strike the Screen in 1 Hour?
- coolnufc
- · Replies 1 ·
Cylinder Rotational Motion Question
- kongieieie
- · Replies 2 ·
Calculating Fluid Velocity in a Circular Duct
- Pietair
- · Replies 2 ·
AC Circuit Analysis - Capacitor
- Gorz
- · Replies 1 ·
Head-on collision between two cars
- housedog1
- · Replies 1 ·
Volume Expansion Calculation: 0.81632 cm^3
- o0ojeneeo0o
- · Replies 1 ·
Electric potential in a closed loop wire
- cupcake
- · Replies 3 ·
Calculating Centripetal Acceleration and Gravitational Force in a Hydrogen Atom
- tuffshorty
- · Replies 9 ·
How can I derive the period of oscillation for a relaxation oscillator?
- limofunder
- · Replies 2 ·
How to Calculate the Distance of a Projectile Fragment Landing After Explosion
- lemonpie
- · Replies 9 ·
Find the tension in the wire and the components of the force exerted
- yb1013
- · Replies 15 ·
Find the maximum AC current flowing through the generator.
- driedupfish
- · Replies 1 ·
Solve Thermodynamic Work Problem: Integrate for a Solution
- yopy
- · Replies 3 ·
Solving the Yo-yo Problem: Final Velocity Calculation
- meanswing
- · Replies 2 ·
Finding moment, relative to a different axis
- Dell
- · Replies 1 ·
Projectile motion y=f(x) type ,
- th3plan
- · Replies 3 ·
Question concerning a formula to calculate work
- haydn
- · Replies 2 ·
Challence problem on electric potential
- mrjoe2
- · Replies 2 ·
How far is the object from the mirror and what is the curvature?
- xswtxoj
- · Replies 4 ·
What is the Image Distance for a Concave Mirror with R=150cm and Do=?
- whitehorsey
- · Replies 4 ·
Finding Central Maximum Width for Laser
- xswtxoj
- · Replies 3 ·
Work done by ideal gas on circular path in PV diagram
- akan
- · Replies 10 ·
Calculating Wavelength of Red Line in Hydrogen Spectrum
- gleeson.tim
- · Replies 1 ·
How Do Surface Charge Densities Calculate on a Conducting Spherical Shell?
- Trentonx
- · Replies 4 ·
Lenses and optics: solving for focal point.
- ilovedeathcab
- · Replies 1 ·
Elastic Collision between two pendulums- max heights reached?
- wizzle
- · Replies 13 ·
Determine the angular velocity and angular displacement
- joemama69
- · Replies 1 ·
What is the average resultant force on a truck making a 90 degree turn?
- obaid
- · Replies 1 ·
Interesting End of Semester Project ideas wanted
- Mattc
- · Replies 2 ·
How Do You Solve This Thermodynamics Ideal Gas Law Problem?
- science.girl
- · Replies 4 ·
How Much Force Can a Human Femur Withstand Before Fracturing?
- yb1013
- · Replies 1 ·
Calculating Temperature Change in a Heat Transfer System
- science.girl
- · Replies 9 ·
Calculating Particle Density in an Ideal Gas at STP
- blazeuofa
- · Replies 3 ·
Thermodynamics question (ideal gas temperatures)
- Koskesh
- · Replies 3 ·
How to Determine the Equivalent Forces-Couple System at Point O?
- random101
- · Replies 15 ·
Escape Velocity and planet’s gravitational field
- RoryP
- · Replies 3 ·
Work, energy and power on a slope.
- Ulti
- · Replies 2 ·
Thermodynamic Question (refrigerator)
- gotrilum
- · Replies 2 ·
True/false questions on wave functions and quantum states
- s_stylie0728
- · Replies 2 ·
[Faraday's Law] Power Extraction from Line in a country
- sgod88
- · Replies 8 ·
Two balls dropped and thrown from a rooftop hit ground 1.88s apart
- LastMinute
- · Replies 6 ·
Forces between 2 parallel wires=>
- noobie!
- · Replies 3 ·
Thermodynamic Question (power plant problem)
- gotrilum
- · Replies 2 ·
Simple harmonic motion spring question
- vorcil
- · Replies 9 ·
Using the Right Hand Rule to Determine Particle Charge
- Nimmy
- · Replies 5 ·
How Does Charge Redistribution Occur Between Two Connected Spherical Conductors?
- haydn
- · Replies 1 ·
Why does banking angle not depend on mass if inertia depends on mass?
- loka
- · Replies 6 ·
Charge on two suspended pith balls in electrostatic equilibrium
- loka
- · Replies 12 ·
How Is the Specific Latent Heat of Fusion for Ice Calculated?
- swede5670
- · Replies 1 ·
Calculating the Impact of a Hammer on a Lawn
- loka
- · Replies 1 ·
Finding wavelength, speed and direction from wave equation y = 0.04 cos(2.5x - 5t)
- mattmannmf
- · Replies 6 ·