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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Resistors in Series - Lab data confusion
- shmoop
- · Replies 34 ·
Simple pendulum - displacement increase
- ward.o.j
- · Replies 1 ·
Resistors in Series - Lab data confusion
- shmoop
- · Replies 5 ·
Deriving the energy density of the Electric Field
- KvGroOve
- · Replies 6 ·
How Should a Pilot Adjust for a Westward Wind to Fly North?
- Masrat_A
- · Replies 4 ·
How to solve gravitational force exerted
- Another
- · Replies 1 ·
EM: Electric field, Two thin rods uniform line charge
- RJLiberator
- · Replies 1 ·
Determine the normal forces to hold an upside down cone
- Demetrius
- · Replies 7 ·
Electric field of a positive plate
- doggydan42
- · Replies 12 ·
Determining the direction of an induced current
- Vladi
- · Replies 10 ·
Understanding Resistance and Current in Ohmic and Non-Ohmic Components
- TreesGoBark
- · Replies 2 ·
What is the minimum speed required for Spiderman to catch a falling baby?
- Masrat_A
- · Replies 4 ·
Pressure Halfway through a planet
- dlc_iii
- · Replies 4 ·
Negative vs Positive work on an escalator
- Matt Poirier
- · Replies 8 ·
Particle traveling towards a plate with an Electric Field
- doggydan42
- · Replies 1 ·
Average velocity when the interval has a domain
- Biscuit
- · Replies 7 ·
Manometer finding absolute pressure at P1
- TJSq
- · Replies 1 ·
Finding the Charge on an Ion in a Zero Electric Field
- Noreturn
- · Replies 1 ·
Force exerted on counter-rotating wheels by a tennis ball
- ballboy
- · Replies 44 ·
Calculating Unknown Forces in a Vector Diagram
- Xiomara
- · Replies 1 ·
Kinematic problem, are my variables right,
- rashad764
- · Replies 34 ·
2 unknown Forces+known resultant force
- Xiomara
- · Replies 1 ·
Cartesian to curvilinear coordinate transformations
- Stendhal
- · Replies 1 ·
Electric Field between Two Thin Conducting Plates
- doggydan42
- · Replies 16 ·
Thermodynamics of a Constant Volume Gas Thermometer
- RJLiberator
- · Replies 25 ·
How do I calculate masses predicted by the force law equation
- jonathanM111
- · Replies 11 ·
What is the Maximum Angle of Deflection in a Particle Collision?
- fedecolo
- · Replies 1 ·
Bohr-Sommerfeld model question "Old" Quantum Theory
- RJLiberator
- · Replies 8 ·
Adding Vectors-Calculating Magnitude and Location
- kevbos
- · Replies 6 ·
Impulse and momentum in two dimensions - velocity question
- Specter
- · Replies 15 ·
Faraday's Law: Induced Voltage and Current in a Loop with Resistance R
- horsewnoname
- · Replies 3 ·
How to approximate—kinematic question using special cases
- Demetrius
- · Replies 29 ·
Electric field in an infinite layer
- Bestfrog
- · Replies 24 ·
Car and Ball Acceleration Problems
- Masrat_A
- · Replies 10 ·
Two object leave the same point with different speeds
- Matt_rb
- · Replies 3 ·
Position of a charge (out of 3) with a net force of 0
- doggydan42
- · Replies 3 ·
A ship leaves the island of Guam and sails 285km at 40 degre
- aron silvester
- · Replies 1 ·
Projectile Motion -- position and the highest point
- Masrat_A
- · Replies 8 ·
How do you determine the sign of a magnetic field?
- Vladi
- · Replies 15 ·
B-field inside a charging || plate (disc shaped) capacitor
- Pushoam
- · Replies 2 ·
Inductor as a battery in a circuit
- Pushoam
- · Replies 12 ·
Calculating electric flux when given a charge (Gauss)
- Will12
- · Replies 14 ·
Quantum Mechanics: Expectation values (Griffiths)
- WWCY
- · Replies 7 ·
Finding electric potential of two concentric rings
- Richardbryant
- · Replies 9 ·
Finding torque in rotating cylinder (viscosity )
- bobblehead
- · Replies 1 ·
Isothermal Work Calculation for an Imperfect Gas
- RJLiberator
- · Replies 4 ·
Which directions should be set to positive? Impulse/momentum
- Specter
- · Replies 3 ·
Calculating Work with Vector Components and Variable Force
- Chansu
- · Replies 4 ·
EMF in bigger loops kept on both sides of a small loop
- Pushoam
- · Replies 2 ·
How to avoid an egg being cracked when dropped
- a129
- · Replies 2 ·
What do the values represent in this equation?
- jfnn
- · Replies 9 ·
Angular frequency of a physical pendulum
- Pushoam
- · Replies 6 ·
Circular Motion of bicycle wheel
- Asher242
- · Replies 3 ·
How much do you need to increase the pendulums length by to
- jstretto
- · Replies 2 ·
EMF across a loop with one end in a parallel plate capacitor
- Pushoam
- · Replies 7 ·
Current due to metal spheres kept far away in the sea
- Pushoam
- · Replies 9 ·
Vector Addition and Subtraction for Homework Help
- EmmaB03
- · Replies 1 ·
I-V graph of two wires and temperature
- shihab-kol
- · Replies 16 ·
Question regarding inelastic/elastic collision.
- jfnn
- · Replies 2 ·
Determine the ratio of the charge to the mass
- Vladi
- · Replies 5 ·
What is the charge of each conductor afterwards?
- Rijad Hadzic
- · Replies 35 ·
Finding the Braking Force of a Truck on an Inclined Plane
- Bill_Nye_Fan
- · Replies 3 ·
How to determine the direction of the E-field of an EM wave
- Luk
- · Replies 7 ·
Calculating Force to Pull a Rope Using Impulse Momentum Theorem
- Vibhor
- · Replies 20 ·
The force required to raise a bridge/lever to an angle?
- helppls
- · Replies 7 ·
Understanding Negative Current in Discharging Capacitors
- Pushoam
- · Replies 2 ·
Need help finding the density in this particular problem
- Alexandra7
- · Replies 5 ·
Lenz' Law - request for formula (for 2 given cases)
- Student149
- · Replies 3 ·
Finding a second velocity with a first and average velocity
- Heidi
- · Replies 5 ·
How to calculate the uncertainty for weight?
- jfnn
- · Replies 4 ·
Projectile motion thrown apple question
- Specter
- · Replies 6 ·
How do I find the final velocity and how high the bridge is?
- Julia Smith
- · Replies 2 ·
Determine stopping distance of a train - modified Euler method
- Alexanddros81
- · Replies 5 ·
What is the apparent difference between the two cases of H=I^2RT and H=(V^2)T/R?
- shihab-kol
- · Replies 17 ·
Dimensional formula of distances in certain formulas
- Mathivanan
- · Replies 4 ·
Block sliding up an inclined plane
- Kevin Smith
- · Replies 2 ·
Frictional Torque of a Spinning Top
- MR SPIN
- · Replies 6 ·
Increment of capacitance of conductor
- Richardbryant
- · Replies 3 ·
How do I convert 6.7 km/hr/sec to m/sec^2
- Lia44
- · Replies 3 ·
Rearranging acceleration formulas
- lornf
- · Replies 9 ·
What Is the Minimum Speed and Tension in a Swinging String with Keys?
- Specter
- · Replies 27 ·
Spring Mechanics Homework: Find Maximum Elongation
- sankalpmittal
- · Replies 18 ·
Electric field generated by ions in a box
- Bestfrog
- · Replies 12 ·
How do you find the third vector C in vector addition problems?
- Fluorine
- · Replies 2 ·
Determine stopping distance of a train traveling at 20m/s
- Alexanddros81
- · Replies 3 ·
What is the net electrostatic force of the sphere at the origin?
- Rijad Hadzic
- · Replies 3 ·
Why does my experimental value of g differ greatly?
- jfnn
- · Replies 1 ·
Time Dilation, calculate the age of the returning astronaut
- apolloxiii
- · Replies 9 ·
2-D Kinematic Velocity and Acceleration Practice Problem
- Panda1321
- · Replies 2 ·
General Definition of Potential Energy - Conceptual Help
- Irfan Nafi
- · Replies 4 ·
What is the torque on an electric dipole in an electric field?
- says
- · Replies 2 ·
Fire an arrow at a moose as it runs away
- Girn261
- · Replies 21 ·
What is the Thermal Conductivity of a Diatomic Gas?
- WWCY
- · Replies 8 ·
Formula confusion for magnetic field inside capacitor
- Suyash Singh
- · Replies 6 ·
Constant velocity, constant acceleration?
- jfnn
- · Replies 11 ·
I want to calculate mark space ratio: f=25000Hz,T=4us
- engnrshyckh
- · Replies 5 ·
Finding the aceleration of a system
- undividable
- · Replies 3 ·
Finding the maximum displacement
- EddiePhys
- · Replies 1 ·
Force on a 3rd point charge due to 2 other point charges
- bumdass
- · Replies 5 ·
Thermodynamics Hydrogen question
- smiljanic997
- · Replies 1 ·