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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Applying Kirchhoff's Laws to Solve Circuit Problems
- Masterx00
- · Replies 9 ·
How to find which polarization ?
- athithi
- · Replies 1 ·
Archimedes Principle and Specific Gravity Determination
- wildtron
- · Replies 1 ·
How to Calculate Impact Force Without Knowing Stopping Time or Distance?
- alexa23
- · Replies 4 ·
How Do I Solve for Final Pressure in an Ideal Gas Problem?
- dnl65078
- · Replies 4 ·
Angular velocity after detaching one mass from a rotating cross
- yoni162
- · Replies 2 ·
Velocity of longitudinal waves in a solid.
- RazerM
- · Replies 1 ·
How Many Oxygen Molecules Are in One Cubic Centimeter at STP?
- dnl65078
- · Replies 13 ·
Rotational inertia of arm lifting a cup
- lyl926
- · Replies 1 ·
How Does Charge Distribution Affect Electric Field Calculation on a Disk?
- mcaro
- · Replies 3 ·
Power delivered by conveyor belt and work to stretch spring
- dagitt
- · Replies 2 ·
Standard harmonic motion question
- sigmavirus
- · Replies 16 ·
Energy required to move an object in orbit?
- Peto
- · Replies 5 ·
When will the object reach a vertical displacement of 5.0m?
- alexparker
- · Replies 3 ·
Block pulled up inclined plane by rope: find acceleration, speed, distance
- lemon
- · Replies 12 ·
How Do You Calculate Stopping Distance and Time with Kinetic Friction?
- cbrons
- · Replies 1 ·
Projectile Motion: Understanding Initial and Final Velocities
- brittanyStein
- · Replies 1 ·
I think my answer should be right, but it isn't energy problem
- holezch
- · Replies 3 ·
Rotation Test: Incline Angle, Mass, and Pulley Dynamics
- squintyeyes
- · Replies 4 ·
Cepheid Variables and the Small Magellanic Cud
- Berdi
- · Replies 1 ·
Moment of inertia of 4 rods forming a square hung from a corner
- makyol
- · Replies 6 ·
Do I need to calculate in car and trailer tension separately?
- lemon
- · Replies 8 ·
Angular Accelaration = Angular Velocity^2 ?
- makyol
- · Replies 1 ·
Calculate Dielectric Thickness for 100pF Capacitor
- Kev1n
- · Replies 1 ·
Solving Billboard Problem with Equations of Motion
- FairyChatMan
- · Replies 14 ·
Electron acceleration in uniform electric field
- Nano
- · Replies 4 ·
MCAT practice - qualitative friction questions
- cbrons
- · Replies 2 ·
Does a Spring Move Upward or Downward When the Box Stops?
- collegeconfid
- · Replies 1 ·
Parallel Axis Theorem and sheet of metal
- physstudent1
- · Replies 5 ·
Projectile Motion at an Angle: Solving for Velocity, Time, and Height
- science_rules
- · Replies 6 ·
Moment of Inertia - parallel axis theorem
- ph123
- · Replies 5 ·
Solving Conveyor Belt Problems: Force, Magnitude, and Power Calculations
- DivD
- · Replies 5 ·
How to Calculate Height and Velocity of a Tennis Ball on Mars?
- SoulInNeed
- · Replies 6 ·
Calculating Work and Speed of a Crate Pulled Across a Floor
- Chanster
- · Replies 11 ·
Calculating Force on the Bottom and Sides of a Swimming Pool
- abpandanguyen
- · Replies 13 ·
Girl swinging on maypole: tension and circular motion
- alexparker
- · Replies 5 ·
Static Equilibrium of a beam and hinge
- GreenPrint
- · Replies 3 ·
Tension in rope for girl swinging on maypole at 2.0 m/s
- alexparker
- · Replies 2 ·
Apparent weight of astronaut in accelerating lunar elevator
- seizureboi
- · Replies 1 ·
Is physics related to studying technology?
- starjar
- · Replies 3 ·
Magnetic flux density from household wiring near a child
- NewAgeBerean
- · Replies 9 ·
How to Calculate Time, Speed, and Angular Speed for Rotational Dynamics?
- squintyeyes
- · Replies 2 ·
Finding coefficient of friction for block pulled up an incline at constant speed
- seizureboi
- · Replies 2 ·
Changing temperature in a perfect cylinder with piston
- Nemode
- · Replies 3 ·
A question relating to frequency i think a 10 year could do this but i cant lol
- physical101
- · Replies 6 ·
When is kinetic energy not conserved?
- ZoeGab
- · Replies 7 ·
Calculating Radius from Angular and Tangential Acceleration in a Bicycle Wheel
- BoldKnight399
- · Replies 2 ·
Kinematics - Uniform Circular Motion
- nahanksh
- · Replies 2 ·
Spring extension and work done on a 45-degree incline
- Koncept
- · Replies 3 ·
How Do I Correctly Calculate and Plot Stress-Strain for a Physics Test?
- MCooltA
- · Replies 3 ·
Why do geostationary satellites all have the same orbital radius?
- bobby22
- · Replies 2 ·
RLC Circuit (with variable frequency)
- meb09JW
- · Replies 1 ·
Calculate electrons and charge from current in two scenarios
- aurao2003
- · Replies 1 ·
How Does Increased Track Height Affect Object Acceleration?
- patymae
- · Replies 1 ·
Skydiver falling at 80mph with 650N drag force
- Neveda
- · Replies 11 ·
Is momentum conserved when a rope winds around a stationary cylinder?
- fizics
- · Replies 13 ·
How Do You Calculate Speed at the Center of Mass After a Collision?
- TaintedLove
- · Replies 2 ·
2D Collision b/w two objects, How do I find the speed of the centre of mass?
- TaintedLove
- · Replies 1 ·
What is the atomic number of hydrogen?
- collegeconfid
- · Replies 1 ·
Young's double slits - with a twist
- advanced
- · Replies 2 ·
Conservation of momentum multiple choice
- Varanasi
- · Replies 4 ·
When is friction and weight parallel positive and negative?
- stargirl17
- · Replies 4 ·
Calculating Electric Potential of a Point Charge Using Gauss' Law
- ZeroCool024
- · Replies 8 ·
How much air resistance acts on a 100-N bag of nails at terminal speed?
- MCSPT117
- · Replies 8 ·
How Do You Calculate Equilibrium in a Tri-Level Mobile Physics Project?
- Centurion1
- · Replies 5 ·
"Calculating the Velocity of an Arrow Hitting Hay
- lking226
- · Replies 4 ·
Rotational dynamics and coefficient of friction
- squintyeyes
- · Replies 2 ·
Conservation of energy, ball kicked into a canyon
- lking226
- · Replies 7 ·
What is the fractional decrease in pressure when a barometer is raised 35m?
- ZoeGab
- · Replies 8 ·
Electric potential at circle center and energy stored in conducting sphere
- clairez93
- · Replies 2 ·
Spring constant for ball dropped from 50m height
- lking226
- · Replies 17 ·
Understanding Pascal's Principle: Water Dispenser for Pets
- ZoeGab
- · Replies 2 ·
Finding viscosity from speed vs force measurements
- bradley123
- · Replies 2 ·
Total kinetic energy of a solid sphere rolling down a 10 m ramp
- Mr.Right
- · Replies 10 ·
Solving Two Questions on Child Mass and Equilibrium System
- karin20061
- · Replies 2 ·
Finding aircraft acceleration and runway length from thrust
- Jason17
- · Replies 7 ·
How do I calculate error bars for slit width from interference pattern measurements?
- agentas
- · Replies 6 ·
Does this has anything to do with relativity?
- Idoke
- · Replies 2 ·
Are These the Correct Answers to this Kinematics Problem?
- physicsfun_12
- · Replies 5 ·
Electrostatics point charges problem
- kihr
- · Replies 12 ·
Can't seem to get this energy problem
- holezch
- · Replies 15 ·
Minimum height for cart to complete a loop-the-loop
- Senjai
- · Replies 5 ·
Force and time for a 160-pound person falling 17 meters
- Meprathe
- · Replies 3 ·
Science Fair, pressure to break a bone
- Tantastic
- · Replies 2 ·
Which star has the greater luminosity
- zebra1707
- · Replies 4 ·
1.81 Muscles and Bones: Vector Magnitude Problem
- cdlegendary
- · Replies 1 ·
Latent Heat - Heat fusion of ice
- sarah-108
- · Replies 1 ·
Finding momentum from force at 3 seconds on a graph
- yamugushi
- · Replies 3 ·
A Person Pushes a lawn Mower. Physics question Need
- alexparker
- · Replies 2 ·
Sources of error in momentum conservation collision lab
- TaintedLove
- · Replies 1 ·
Calculate Time Until Tree is Hit: 9m Away, 18m/s Velocity
- newtonsmac
- · Replies 2 ·
Calculating Minimum Volume for Floating Ice Slab - AP Physics B Problem
- llama0lover
- · Replies 18 ·
Newton's 2nd law cart and hanging weight experiment data
- akuma3251
- · Replies 4 ·
What Are the Velocities and Forces in This Elastic Collision?
- chrisfnet
- · Replies 4 ·
Finding Eastward Velocity of an Airplane
- zelda1850
- · Replies 1 ·
Gravitational Force of Meteor and Earth: 1/8 vs 64 Times as Distance Changes
- zelda1850
- · Replies 6 ·
Friction and magnitude between two blocks
- trogdor5
- · Replies 3 ·
Bucket of water of is suspended by a rope wrapped around a pulley
- squintyeyes
- · Replies 6 ·
How Long is Santa's Slide Down the Roof?
- stargirl17
- · Replies 1 ·