Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Normal force of a mass sliding down a quarter circle
- Jamest39
- · Replies 9 ·
Calculation of permissible error in physical quantity
- Abhishek Gupta
- · Replies 4 ·
How High Can You Jump on asteroid 243 Ida?
- in the rye
- · Replies 5 ·
Force required to pull an object with 2 different methods
- Miguel Guerrero
- · Replies 24 ·
How Much Louder Are Four Crying Quadruplets Compared to One?
- toesockshoe
- · Replies 8 ·
Kinetic Energy After Some Time Has Elapsed
- quido
- · Replies 6 ·
Find the speed of water out of a nozzle
- tomas123
- · Replies 7 ·
Calculating Electric Potential in a Series of Capacitors
- Kernul
- · Replies 7 ·
Converting Electromagnetic Energy To Temperature
- marmanq
- · Replies 6 ·
Maximum acceleration of two interpenetrating charged balls
- Better WOrld
- · Replies 28 ·
Calculation of Kinetic Energy in Rotation Motion
- Amartya Sen
- · Replies 11 ·
Holding a block of mass in equilibrium on a slope
- adam19325
- · Replies 5 ·
Is Angular Momentum Conserved in Circular Motion?
- vijayramakrishnan
- · Replies 13 ·
Relativistic momentum, kinetic energy, and total energy of an electron at 0.422c
- Rayonna
- · Replies 1 ·
2D Kinematics - Dropping object from a zipline
- TrpnBils
- · Replies 7 ·
Rotating Coil in Magnetic Field
- dukesolice
- · Replies 6 ·
Moment of Torque; Am I solving this correctly?
- vinci
- · Replies 3 ·
What Are the Gravitational and Normal Forces on a Skier on a Slope?
- j doe
- · Replies 4 ·
Circular Motion/Newton's Laws-- Swinging a Pail
- in the rye
- · Replies 5 ·
How much energy is stored in a discharging capacitor after one second?
- ultimattack2
- · Replies 6 ·
Archived Find the vortices of a square after a transformation given by a tensor
- Jalo
- · Replies 1 ·
How Much Work is Done by the Cake Batter on a Falling Worker?
- Jamest39
- · Replies 5 ·
Finding Work and Force in a Thrown Ball Problem
- Rumplestiltskin
- · Replies 29 ·
Parallel and Series Capacitors?
- ilovephysics16
- · Replies 3 ·
Surface charge density on a spherical shell with null total charge
- Kernul
- · Replies 10 ·
Calculating Light Spot Size on the Moon for a Diffraction-Limited Laser Beam
- RJLiberator
- · Replies 7 ·
How Do You Calculate the Final Image Position in a Three-Lens System?
- MaysMrDolphin
- · Replies 8 ·
Newton's first law in trucks and roller coasters
- alexandria
- · Replies 4 ·
Ideal Gas compressed at constant pressure
- henrco
- · Replies 12 ·
Force Acting on Area: ucos(theta)dA vs usin(theta)dA
- foo9008
- · Replies 1 ·
How Much Should the Spring Be Compressed to Keep the Mass on Track?
- Jamest39
- · Replies 13 ·
Forces - calculating the net force
- alexandria
- · Replies 41 ·
How Do You Calculate Currents Through Multiple Resistors in a Circuit?
- YamiBustamante
- · Replies 2 ·
Vertical displacement to reach X% of terminal velocity with drag
- John Lam
- · Replies 13 ·
Terminal Speed for Skier Going Down Slope
- adamwest
- · Replies 5 ·
Force magnitude and direction Problems
- Balsam
- · Replies 1 ·
What is the voltage across battery terminals?
- neilson18
- · Replies 1 ·
Finding average velocity in a velocity distribution
- Woolyabyss
- · Replies 3 ·
The laws of motion-a block pulled by a light cord
- haha1234
- · Replies 10 ·
Archived Entropy Change of an Ideal Gas
- mouzis
- · Replies 1 ·
Free body diagram for a trailer being pulled by a dolly
- theone
- · Replies 2 ·
Resistance equivalence and circuit current
- Robb
- · Replies 15 ·
Pulleys, displacement by vertical height
- Hebel
- · Replies 10 ·
How can the density of air be measured using simple equipment?
- Alettix
- · Replies 4 ·
Measurement of Focal length with Laser beam
- Alettix
- · Replies 4 ·
Calculating Electric and Magnetic Field amplitude
- gsmtiger18
- · Replies 23 ·
How Does Adding a Cat Affect the Acceleration of a Block System?
- David112234
- · Replies 14 ·
Wooden cube floating in oil and water layers
- vinamas
- · Replies 11 ·
Braking Torque Needed to Stop Shaft w/ 34kg m Inertia @ 600rpm
- Louis Harriss
- · Replies 2 ·
How do I convert a spring constant of N/cm to N/m
- Waynerds
- · Replies 2 ·
Confusion regarding application of Conservation of Momentum
- Amartya Sen
- · Replies 4 ·
Does electric potential change if you replace a proton with an alpha particle?
- Philip KP
- · Replies 1 ·
Calculating travel time and fuel consumption for lettuce shipment routes
- alexandria
- · Replies 5 ·
How can we obtain this equation?
- Lattes
- · Replies 15 ·
B-field to create average emf in rotating coil
- ChuckB
- · Replies 11 ·
Finding the center of mass in a system of pipes
- Freshtone
- · Replies 20 ·
Describe the angular momentum of the ball and net torque on
- heartshapedbox
- · Replies 7 ·
What is the gravitational force on the 52[kg] mass
- heartshapedbox
- · Replies 6 ·
How do you find electric field given only time and distance?
- maddieamy
- · Replies 1 ·
Two neutron stars approaching: find speeds at half distance and collision
- iamazombie911
- · Replies 2 ·
Index of refraction for converging lens
- vetgirl1990
- · Replies 3 ·
Rotational Energy, ball on a loop
- bigguccisosa
- · Replies 5 ·
What is the relationship between focal length and focal points?
- vetgirl1990
- · Replies 1 ·
How Does Soap Bubble Thickness Affect Light Interference?
- vetgirl1990
- · Replies 5 ·
Pendulum and spring; Would like to check if the result is correct.
- Xavicamps
- · Replies 21 ·
Moment of Inertia for a Thick Spherical Shell
- b100c
- · Replies 3 ·
Density of chromium ions in ruby
- lcr2139
- · Replies 7 ·
Collision of Two Particles: Conservation of Momentum and Final Velocities
- heartshapedbox
- · Replies 2 ·
Work done moving charge near a line of charge
- Teameister
- · Replies 2 ·
Compton Scattering; Relation between scattering angles
- watisphysics
- · Replies 2 ·
Wooden Cube submerged length and the carry limit
- vinamas
- · Replies 4 ·
Electron velocity between concentric cylinders using Gauss' law
- Kernul
- · Replies 28 ·
Special Relativity and Space-Time Diagrams
- Jefffff
- · Replies 3 ·
What Rotational Speed is Needed for a Satellite's 30-Minute Scan Cycle?
- Firben
- · Replies 35 ·
Pressure due to uneven water distribution in connecting pipe
- rwooduk
- · Replies 4 ·
Calculate speed at a distance from power
- petterg
- · Replies 7 ·
Rearranging x=x0e^-lambda t in the form y=mx+c
- Mike Shandon
- · Replies 3 ·
Change in velocity due to force acting over given time
- Giu1iano
- · Replies 11 ·
Seemingly simple mechanics questions
- werproc
- · Replies 3 ·
Resultant force on a rocket and energy stored in a bungee rope
- zeldaspurpose
- · Replies 9 ·
Finding the force to pull a block up a frictionless slope?
- Eclair_de_XII
- · Replies 12 ·
Find rope tensions and angle when resultant is 950 N and FB is minimum
- newbphysic
- · Replies 44 ·
A 14.0 kg sign hangs from 2 lengths of rope
- j doe
- · Replies 5 ·
What is the Minimum Incident Angle to Excite Evanescent Waves in a Glass Prism?
- nmsurobert
- · Replies 2 ·
Finding initial velocity of car 1 before hitting stationary car 2
- Ellen W.
- · Replies 8 ·
A 300 kg rocket sits on a launch pad. What is the thrust nee
- j doe
- · Replies 12 ·
What is the acceleration of a wedge with an inclined mass resting on it?
- putongren
- · Replies 20 ·
Kepler's Laws, two large bodies
- bbbl67
- · Replies 3 ·
Question on AP Physics C FRQ 2013. #3
- RoboNerd
- · Replies 4 ·
Calculate the velocity of a mass
- carr
- · Replies 5 ·
Energy stored in a LC circuit
- Luek
- · Replies 1 ·
Number of electrons making it through an NPN transistor
- Potatochip911
- · Replies 16 ·
What are the components of an applied force?
- Book reader
- · Replies 2 ·
Find Meta Center for Object Stability
- foo9008
- · Replies 29 ·
How does mass of the bungee jumper effect a safe jump
- gagzi bear
- · Replies 17 ·
Rate of water flow experiment question
- Mike Shandon
- · Replies 3 ·
How Should Null Results Be Reported in an Astrophysics Lab Report?
- Emily R.
- · Replies 1 ·
Is I/V Submerged a Valid Formula for Calculating Metacentric Height?
- foo9008
- · Replies 17 ·
Calculating Force Exerted by a Water Fountain on a Vertical Board
- Biker
- · Replies 16 ·