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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Creating a Nichrome Heating Coil for 12V, 36W @373K
- pat666
- · Replies 12 ·
Airplane flap angle and lift in a wind tunnel experiment
- claireisbear
- · Replies 3 ·
Essay Help for IB: Researching Physics Topics
- dsds1000
- · Replies 7 ·
The Law of Conservation Problem (Application)
- tmang
- · Replies 3 ·
Six homework problems on vectors, quadratic equations, and forces
- hyorinmaru
- · Replies 3 ·
How to we do the inverse of y=(x-1)^2 ?
- cmab
- · Replies 3 ·
Friction question (intro level)
- Fallinleave
- · Replies 1 ·
What is the Inductance per Unit Length of a Solenoid?
- jiten827
- · Replies 6 ·
Why Must HCl and NaOH Be at Equal Temperatures for Mixing in Experiments?
- chemistry4all
- · Replies 1 ·
Question on Electric Potential Energy
- Lewis
- · Replies 6 ·
Ball Velocity at Different Times
- emma402
- · Replies 26 ·
Sound travel time from airplane at 9000m with temperature-dependent speed
- the_storm
- · Replies 3 ·
Velocity and acceleration of a ball
- emma402
- · Replies 28 ·
Exact forces (not net forces) involved in pushing a line of boxes?
- InvisibleMan1
- · Replies 7 ·
Can an object move with zero acceleration or accelerate with zero velocity?
- emma402
- · Replies 6 ·
How Do Echo Timings Help Calculate Cliff Distances?
- the_storm
- · Replies 3 ·
Magnetic constant for force between two magnetic poles
- winkZ
- · Replies 2 ·
Conditions of equilibrium problem
- Dragonite
- · Replies 6 ·
Does the work-energy theorem relate to 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 ·
Two charged spheres hanging from a thread at 30 degrees
- 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 ·
50kg mass hanging from pulley with 1kg mass on 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 ·
When does the rocket use up its fuel from the graph?
- nicholaschean
- · Replies 11 ·
Which objects are accelerating in these six scenarios?
- emma402
- · Replies 2 ·
Expression of Electric Field with known charges
- Alexstre
- · Replies 3 ·
Quick thermo problem[just an uncertainty]
- K29
- · Replies 3 ·
Showing RC has units of time
- pat666
- · Replies 2 ·
Force and distance in a hydraulic lift with two pistons
- 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 ·
Check resistor network with 12Ω, 18Ω, 36Ω parallel resistors
- pat666
- · Replies 4 ·
Solving Trajectory Problem with 2 Variables (V,A)
- Sciencerob
- · Replies 35 ·
Charged particle rotating in electric field
- Ush
- · Replies 4 ·
How Do You Calculate Electric Field Intensity?
- Ush
- · Replies 9 ·
How Does Air Speed Affect Aircraft Weight?
- Mowgli
- · Replies 4 ·
Can kinetic friction and gravity do positive work?
- HelloMotto
- · Replies 4 ·
Electric field on a piece of wire
- vladimir69
- · Replies 3 ·
RC transistor switch: labeling, charging delay, and bulb control
- 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 ·
Solving a system of 5 equations with 5 current unknowns
- astenroo
- · Replies 4 ·
Calculating heat of reaction by adding and subtracting equations
- chemistry4all
- · Replies 5 ·
Finding experimental evidence and theorists for nuclear fusion essay
- 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 ·
Block M pulled by hanging mass m on frictionless pulley with friction
- aarno
- · Replies 3 ·
Finding charge on third point charge given force conditions
- 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 ·
Coefficient of friction for block on incline with spring
- SpIIIdD
- · Replies 3 ·
Calculating Time for 1000kg Boat to Slow from 90km/h to 45km/h
- Fallinleave
- · Replies 2 ·
Calculating propeller torque from rpm and force measurements
- 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 ·
Sign of potential energy for opposite charges at fixed distance
- pat666
- · Replies 8 ·
Force on a corner charge in a rectangle of four equal point charges
- 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 ·
Average and RMS speed of molecules with speeds 2 to 11 km/s
- abrowaqas
- · Replies 3 ·
Finding the result of a collision
- InvisibleMan1
- · Replies 2 ·
Which thermodynamics laws apply to heating copper until oxidation?
- Kloji
- · Replies 1 ·
Electric field slowing a proton from 3.5 × 10⁶ m/s to rest
- pat666
- · Replies 12 ·
How to know the direction of friction?
- jofree87
- · Replies 3 ·
How does nodal analysis by inspection work?
- 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 ·