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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How Do Echo Timings Help Calculate Cliff Distances?
- the_storm
- · Replies 3 ·
Understanding the Magnetic Constant: Finding the Force Between Two Magnet Poles
- winkZ
- · Replies 2 ·
Conditions of equilibrium problem
- Dragonite
- · Replies 6 ·
Work-Energy Theorums & Newton's Second Law
- mizzy
- · Replies 1 ·
Potential Related to Electric Field?
- mitchellhewer
- · Replies 4 ·
Why Is the Calculated Torque About the Shoulder Incorrect?
- sona1177
- · Replies 6 ·
Find the direction and the magnitude of the total electric field
- PhilCam
- · Replies 5 ·
Difficult UCM/friction question
- floridaMAO
- · Replies 4 ·
Hanging Charges Homework: Finding Charge on Suspended Spheres
- ninetyfour
- · Replies 1 ·
FBDs of Stacked Boxes: Understanding Force Distribution in Connected Objects
- InvisibleMan1
- · Replies 2 ·
What Was the Original Frequency of the Piano's Out of Tune A Note?
- ortegavs
- · Replies 3 ·
Statics Problem: Weight Hanging from a Rope
- wwshr87
- · Replies 8 ·
Acceleration of Charge in a Potential Gradient
- mitchellhewer
- · Replies 1 ·
Find the mass of object knowing the applied force and coefficient of friction
- liz777
- · Replies 3 ·
What Does Zero Electric Flux Indicate About the Electric Field?
- ___
- · Replies 3 ·
Find the Time When Rocket Uses Up Its Fuel: Graph Analysis
- nicholaschean
- · Replies 11 ·
Acceleration: is this accelerating?
- emma402
- · Replies 2 ·
Expression of Electric Field with known charges
- Alexstre
- · Replies 3 ·
Quick thermo problem[just an uncertainty]
- K29
- · Replies 3 ·
Units of RC are the same as time - help
- pat666
- · Replies 2 ·
Calculating Forces & Heights in a Hydraulic Lift
- Mowgli
- · Replies 10 ·
Substance decrease by factor of 100? (radioactivity)
- physics(L)10
- · Replies 5 ·
Principal Quantum number by size?
- physics(L)10
- · Replies 4 ·
Capacitors - long Q - full procedure, very grateful if someone will check
- pat666
- · Replies 10 ·
Report on air resistance of projectile motion
- Joemus
- · Replies 2 ·
The speed of sound in relation to temperature
- HalcyonStorm
- · Replies 2 ·
A momentum question - having conceptual difficulties -
- metalrose
- · Replies 16 ·
Equipotential Surfaces for Different Charge Configurations
- pat666
- · Replies 7 ·
Equipotential Surfaces for Different Charge Configurations: Where to Find Them?
- pat666
- · Replies 2 ·
What is the resistance of a hollow aluminum cylinder with given dimensions?
- delve
- · Replies 1 ·
R circuit (pretty simple) need checked - full working - please
- pat666
- · Replies 4 ·
Solving Trajectory Problem with 2 Variables (V,A)
- Sciencerob
- · Replies 35 ·
Another electric field question, =/
- Ush
- · Replies 4 ·
How Do You Calculate Electric Field Intensity?
- Ush
- · Replies 9 ·
How Does Air Speed Affect Aircraft Weight?
- Mowgli
- · Replies 4 ·
Please help me understand relationship between work and friction/gravity
- HelloMotto
- · Replies 4 ·
Electric field on a piece of wire
- vladimir69
- · Replies 3 ·
Solve Transistor Trouble: Physics Help
- Eline1.618
- · Replies 1 ·
What is the maximum distance a block will fall on a vertically hanging spring?
- shawli
- · Replies 5 ·
Predicting Cell Movement and Shape in Conway's Game of Life
- johngalt827
- · Replies 5 ·
Needing help with calculating currents
- astenroo
- · Replies 4 ·
Adding and subtracting thermalchemcial equations help needed
- chemistry4all
- · Replies 5 ·
What Are the Key Experiments and Theorists Behind Nuclear Fusion?
- Jia T
- · Replies 4 ·
Understanding Potential Energy and Force for a Constant Potential Function
- yamama1
- · Replies 4 ·
How Do You Calculate the Distance Traveled in the Last Second of Acceleration?
- mizzy
- · Replies 1 ·
Can Power Absorbed by 5G1 be 0 in this Circuit?
- EvLer
- · Replies 1 ·
Tension in string of object suspended in liquid
- javashackgirl
- · Replies 3 ·
Sound Source distance and Localization method
- isv10
- · Replies 1 ·
Solving a Static Problem with Conflicting Results
- subho123
- · Replies 6 ·
Conservation of momentum of a bullet question
- llamajuice
- · Replies 1 ·
The suspended object then must be negatively charged.
- tony873004
- · Replies 4 ·
Help: Kinetic Energy and Friction - A block pulled by another on a pulley
- aarno
- · Replies 3 ·
Master Point Charges with Ease: Homework Equations & Attempt at Solution
- pat666
- · Replies 19 ·
What is the speed of the moving charge when it's 1.0cm from the fixed charge?
- pat666
- · Replies 14 ·
Calculating Gravitational Force Between Earth and Moon
- mizzy
- · Replies 9 ·
Dynamics/ Simple Harmonic motion help
- SpIIIdD
- · Replies 3 ·
Calculating Time for 1000kg Boat to Slow from 90km/h to 45km/h
- Fallinleave
- · Replies 2 ·
Torque and Angular acceleration
- egroeg93
- · Replies 3 ·
Simple Harmonic Motion of Charges
- phatmomi
- · Replies 1 ·
Work Done in Compressing Oxygen: Thermo Analysis
- abrowaqas
- · Replies 4 ·
Conservation of energy - spring problem
- shawli
- · Replies 7 ·
How to Derive the Equation of Motion for Connected Masses on a Cylinder?
- bobred
- · Replies 16 ·
Finding q(t) on a capacitor in an RC circuit
- Robert S
- · Replies 3 ·
Calculating Capacitance for a Water-Filled Parallel-Plate Capacitor"
- pat666
- · Replies 2 ·
How Does a Potential Difference Affect Kinetic Energy of a Charged Particle?
- pat666
- · Replies 4 ·
Understanding Capacitor Charging Time
- pat666
- · Replies 4 ·
Potential Energy of Oppositely Charged Particles: Positive or Negative?
- pat666
- · Replies 8 ·
Point Charges: Finding Force on Q_2 - Solved Homework Problem
- pat666
- · Replies 4 ·
Potential Difference with Series and Parallel Resistors
- thebert010
- · Replies 4 ·
Equipotential surfaces - - Pictures
- pat666
- · Replies 1 ·
Finding Electric Field from Electric Force and Charge
- pat666
- · Replies 1 ·
Potential difference charge and Energy - Equation
- pat666
- · Replies 1 ·
Momentum/law of conservation of energy - collision of two cars
- shawli
- · Replies 6 ·
Friction question (introductory level)
- Fallinleave
- · Replies 2 ·
What Is the Frequency of Oscillation in a Series RLC Circuit?
- abrowaqas
- · Replies 1 ·
Why Does Magnification Formula M = di/do Sometimes Include a Negative Sign?
- i_m_mimi
- · Replies 1 ·
Equivalent Current Through Specific Resistor
- ScienceGuy787
- · Replies 2 ·
Calculating Average & RMS Speed of Molecules
- abrowaqas
- · Replies 3 ·
Finding the result of a collision
- InvisibleMan1
- · Replies 2 ·
Understanding Thermodynamics in an Experiment: Laws at Play
- Kloji
- · Replies 1 ·
Finding Electric Field intensity
- pat666
- · Replies 12 ·
How to know the direction of friction?
- jofree87
- · Replies 3 ·
I really need to learn how to do Nodal Analysis by Inspection before Wednesday
- VinnyCee
- · Replies 4 ·
A point charge near a stream of water
- dogeatdog
- · Replies 1 ·
What Is the Direction of the Magnetic Force on a Proton?
- eric.c
- · Replies 1 ·
Angle needed on banked corner of road.
- Lachlan1
- · Replies 5 ·
Electric force of Van de Graaff generator problem.
- geonerd
- · Replies 1 ·
I with my mechanical principles home work.
- james9.81
- · Replies 7 ·
Circular Diffraction Patterns: What is the Correct Diameter of the Slit?
- Brown Arrow
- · Replies 4 ·
Magnetism - Is there a magnetic force on the lectron
- sharkey1314
- · Replies 5 ·
Real vs Ideal Springs: How Do Forces and Stretches Compare?
- ninetyfour
- · Replies 1 ·
Force of collision without knowledge of the results of the collision
- InvisibleMan1
- · Replies 3 ·
Analyzing Canon Ball's Height & Acceleration Over Time
- jadiepants
- · Replies 5 ·
Electric field of semi circular piece of wire
- vladimir69
- · Replies 5 ·
Rotational motion of a turntable
- mizzy
- · Replies 3 ·
Cylindrical Surface Charge Density
- dinnsdale
- · Replies 10 ·
Conservation of Energy with Spring Mass System on Inclined Plane
- JakeHowarth
- · Replies 3 ·
Conceptual: electric potential
- calgal260
- · Replies 3 ·
Linear Momentum (One Dimension) Quiz Question
- LeonGrande
- · Replies 3 ·