Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Calculating Time to Heat Earth to 100°C
- djk628
- · Replies 1 ·
Mirror Placement for 1.60m Body: Answers Revealed
- Voltman
- · Replies 1 ·
Potential difference between bird's feet on transmission line
- bishoy
- · Replies 10 ·
Changing temperature of falling bodies
- djk628
- · Replies 5 ·
Error Checking Single Slit Diffraction Equation for Bright Lines
- donotremember
- · Replies 1 ·
Is Temperature Constant in a Pressure-Volume Graph?
- intenzxboi
- · Replies 1 ·
Calculating the Center of Mass of an Arc
- RoyalCat
- · Replies 2 ·
Electric Flux on a Cylindrical Gauss Surface
- exitwound
- · Replies 5 ·
Harmonic Function (time averages)
- jeff1evesque
- · Replies 6 ·
Average force in stopping a block
- ride4life
- · Replies 16 ·
Lab help (Millikan oil drop experiment)
- Matt1234
- · Replies 2 ·
Earth Without Oceans: Why It Would No Longer Be a Sphere
- monty37
- · Replies 3 ·
Heat Transferred to 8,000-kg Aluminum Flagpole
- intenzxboi
- · Replies 2 ·
Capacitor with radius finding the energy density
- sonrie
- · Replies 4 ·
Does a constant volume and pressure change result in zero work done by a gas?
- intenzxboi
- · Replies 1 ·
What is the change in temperature of a coin dropped from a building?
- intenzxboi
- · Replies 12 ·
What Does the Scale Read at Its Peak When You Jump from 1.3m?
- kavipach
- · Replies 4 ·
A Sphere rolling down an incline. Find the speed at the bottom
- kavipach
- · Replies 2 ·
Tension, horizontal & vertical tension
- Shortyyy
- · Replies 18 ·
E-Field over Uniformly Charged Disc
- exitwound
- · Replies 9 ·
How Do You Calculate Force and Tension in a Pulley System?
- Apprentice123
- · Replies 31 ·
Challenging problem about puck revolving on a table
- go_ducks
- · Replies 6 ·
Solve Physics Prob: Q, I, TC & Charge on C after 5.122ms
- peaceandlove
- · Replies 4 ·
How Do You Calculate the Cost of Running a Steam Iron?
- peaceandlove
- · Replies 4 ·
Gravitation, really hard at least for me
- Puchinita5
- · Replies 3 ·
Judging the Kite-Flying Contest: Measuring String Tensions
- blackboy
- · Replies 2 ·
What are the velocity components after an inelastic collision in 2D?
- corvus606
- · Replies 4 ·
Calculating Electric Potential Energy of an Electron in a Fixed Proton System
- talaroue
- · Replies 8 ·
Calculating Final Pressure of Gas Mixture in Two Identical Containers
- gladius999
- · Replies 17 ·
Angular Momentum: Mass Rotating About a Post
- Sam_Goldberg
- · Replies 3 ·
Bathroom scale being compressed but jumping on it
- kavipach
- · Replies 13 ·
How much gas is required to heat a house
- Dyna
- · Replies 5 ·
Why is Permittivity ε Multiplied and Not Summed?
- jeff1evesque
- · Replies 2 ·
Galileo's Theory of falling bodies problem
- Ki-nana18
- · Replies 2 ·
What is the force applied by water on a falling sandbag?
- dance_sg
- · Replies 6 ·
How Does Relative Permittivity Relate to the Electric Field in Capacitors?
- jeff1evesque
- · Replies 3 ·
Friction problem of playground slide
- pttest
- · Replies 4 ·
Permittivity (background reading from Wikipedia)
- jeff1evesque
- · Replies 6 ·
Gravitational Energy transfered to Kinetic question
- rayfish
- · Replies 8 ·
What is the study of motion called?
- Ki-nana18
- · Replies 2 ·
How does changing force and mass affect acceleration on a lab cart?
- dance_sg
- · Replies 9 ·
Power dissapatied by a resistor
- talaroue
- · Replies 2 ·
Calculating Average Net Force on a Car Acceleration
- dance_sg
- · Replies 5 ·
How to differentiate between single and multiloop circuits
- novafx
- · Replies 6 ·
Determine Work done on the puck?
- jumpingjack90
- · Replies 5 ·
Calculating Fpush for Kinetic Friction | Coefficient of Friction Explained
- Paulbird20
- · Replies 10 ·
Distance traveled at end of second interval: 27m
- Ki-nana18
- · Replies 2 ·
What is the solution to the Power-Truck Problem in physics?
- Chewy0087
- · Replies 7 ·
What is the energy equation for a damped pendulum?
- Roboticist
- · Replies 15 ·
Photoelectric effect :Millikan experiment
- pepe1964
- · Replies 7 ·
What is the Speed of the Incoming Sphere After a Perfectly Elastic Collision?
- Nguyenfa.t
- · Replies 19 ·
Gravitation, hollowed out sphere
- Puchinita5
- · Replies 1 ·
Magnetic Field from Sheets of Current
- typeinnocent
- · Replies 1 ·
Solving Friction Force and Acceleration Problems
- pttest
- · Replies 1 ·
Block on an incline with Friction
- love2dream89
- · Replies 1 ·
Projectile Motion, requiring variable elimination
- Lukapaka
- · Replies 6 ·
Calculating Eraser's Distance on Friction Desk
- Matt1234
- · Replies 1 ·
Calculating Change in Internal Energy: A Steam Engine's Performance
- jmb07
- · Replies 4 ·
Force on Square Loop Problem | Griffiths 5.4
- astropi
- · Replies 6 ·
Calculating Power Factor for an RC Circuit with Given R, C, and Frequency
- just.karl
- · Replies 12 ·
Mass of an object up inclined plain
- Paulbird20
- · Replies 2 ·
Where Will the Falling Suitcase Land? - Projectile Motion Homework Question
- alex2256
- · Replies 1 ·
True/false Freshman Undergrad Physics Problems (Work)
- TwinGemini14
- · Replies 9 ·
Designing a Ramp for Exercise Equipment Delivery
- Brainsplosion
- · Replies 2 ·
Understanding the Relationship between Work and Volts
- jeff1evesque
- · Replies 12 ·
Understanding the Components of Electric Charge Equation
- tchounkovskii
- · Replies 2 ·
Finding velocity and displacement with gravity
- kahya
- · Replies 13 ·
What is the ratio of radii for the two species X+ and X2+?
- KatieD
- · Replies 5 ·
Calculating the period of a pendulum
- dummybbmm
- · Replies 2 ·
How Does Changing the Radius Affect Angular Speed and Kinetic Energy?
- balling12
- · Replies 2 ·
Trouble Writing Transfer Function for Mass-Spring-Damper System
- majin_andrew
- · Replies 2 ·
Static equilibrium and tension problem
- Puchinita5
- · Replies 5 ·
Kinematics (distance, speed, velocity, acceleration)
- pttest
- · Replies 3 ·
Some subtleties regarding Impedance
- Oren Becker
- · Replies 2 ·
Magnitude of force of box on ramp.
- BitXBit
- · Replies 16 ·
Solving the Liquid Density Puzzle
- Chewy0087
- · Replies 4 ·
How can I improve my approach to solving physics problems?
- coco87
- · Replies 3 ·
AC Power and Combining Volt/Current
- elink24
- · Replies 6 ·
Capacitor Applications: Filtering out AC and DC Signals
- jeff1evesque
- · Replies 5 ·
Calculating Distance Between Plates EF & GH with Varying Electric Fields
- leena19
- · Replies 7 ·
What is the angular momentum of the system after the collision?
- shangri-la89
- · Replies 1 ·
Copper Pipe Expansion: 2.5m Length Rise to 86.5°C
- tag16
- · Replies 2 ·
Two objects moving away from eachother at c - Special relativity
- vorcil
- · Replies 3 ·
Momentum and stopping distance
- test2morrow
- · Replies 3 ·
Block is lowered into water, what is weight of water spilled?
- test2morrow
- · Replies 4 ·
What is the weight of a hollow sphere underwater?
- test2morrow
- · Replies 2 ·
Concentric Spherical Capacitors
- msbell1
- · Replies 6 ·
Volume of block given underwater and land weight
- test2morrow
- · Replies 2 ·
Deciphering Velocity-Time Graphs: How to Determine Acceleration?
- alex2256
- · Replies 7 ·
RLC Circuit Resonance Frequency for WRUF Broadcast
- elink24
- · Replies 4 ·
Force & Newton's 2nd Law Problem
- crono_
- · Replies 4 ·
Particle Collision: Mass and Velocity Ratios Question
- Matt1234
- · Replies 8 ·
Solving for Velocity in a Momentum and Kinetic Energy Problem
- flyingpig
- · Replies 11 ·
How long does it take the ray to traverse this path?
- mba444
- · Replies 4 ·
How Do Accelerations and Tensions Relate in a Dual Pulley System?
- yitriana
- · Replies 2 ·
Magnitude of Acceleration after initial impulse?
- jumpingjack90
- · Replies 4 ·
Calculating Gravitational Field Constants for Mars, Jupiter, and Mercury
- Dyna
- · Replies 2 ·
How Can Surface Charge Density Equal bcos(θ)?
- jeff1evesque
- · Replies 4 ·
Electric Field and the position of a charge
- dalson
- · Replies 3 ·
Potential difference between two points located at distances
- jeff1evesque
- · Replies 4 ·