Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Troubleshooting Answers to Easy Physics Questions on LON-CAPA
- Mert Kerem Yavuz
- · Replies 7 ·
Understanding derivation of -du/dx = F
- hsbhsb
- · Replies 4 ·
Car collision: decomposing momentum in x- and y-direction
- andreas_bh
- · Replies 5 ·
Determining the capacitor value for an RC circuit
- matthew tivey
- · Replies 4 ·
Determine the largest weight of the lamp that can be supported
- Robb
- · Replies 4 ·
Find distance beyond the myopic farpoint
- Petra de Ruyter
- · Replies 3 ·
How to balance gravitational energy and kinetic energy?
- Eclair_de_XII
- · Replies 17 ·
How Is Centrifugal Force Calculated for a Particle in a Rotating Frame?
- decentfellow
- · Replies 8 ·
Broken Spaceship Accelerating towards circular sheet of dust
- Dusty912
- · Replies 7 ·
Which ball exerts a larger impulse on the wall?
- Steven Byers
- · Replies 7 ·
Planck's Law: Low, and High Frequency Limit
- Destroxia
- · Replies 3 ·
Spring Dynamic Kinematics - acceleration
- Haizakokaru
- · Replies 1 ·
How Do You Find the Angle of Incidence from a Prism to Air?
- totomyl
- · Replies 6 ·
Solve Particle Equilibrium Homework Statement
- Robb
- · Replies 11 ·
Derive the energy required for an ideal refrigerator
- Old_sm0key
- · Replies 16 ·
What are the reaction forces to the external forces on the wagon in (b)?
- Morrissey
- · Replies 2 ·
Simplifying a circuit w/ multiple resistors & current source
- Cocoleia
- · Replies 1 ·
Playground/merrygo round problem. Rotational kinematics
- iknowsigularity
- · Replies 5 ·
Poisson's equation and charge density distribution (electromagnetism)
- JulienB
- · Replies 10 ·
Why Does Terminal Voltage Differ from EMF in a Circuit?
- moenste
- · Replies 15 ·
Multiple choice question on finding magnetic field
- RoboNerd
- · Replies 2 ·
What Is the Maximum Kinetic Energy of an Electron in the Photoelectric Effect?
- INAM KHAN
- · Replies 7 ·
2 Sound waves reflection easy problems
- Clara Chung
- · Replies 5 ·
Equation of motion for the system, and determine the frequen
- Chhung
- · Replies 8 ·
Find the impedance and ω for (R and L in series, & C in || )
- notnerd
- · Replies 2 ·
Problem with induction, Lorentz force and battery power
- JulienB
- · Replies 7 ·
Ball trajectory velocity and displacement vectors
- late347
- · Replies 13 ·
F = ma equations for circular movement (roller coaster)
- hsbhsb
- · Replies 2 ·
Deceleration Calculation for Drag Force with Varying Units
- nysnacc
- · Replies 6 ·
Why Is My Metre-Ruler Setup Failing to Achieve Equilibrium?
- Taniaz
- · Replies 10 ·
Voltage that would produce full-scale deflection of a meter
- moenste
- · Replies 18 ·
Which graph(s) illustrates a car that is accelerating?
- physicsparent
- · Replies 11 ·
How to Calculate Pressure at the Bottom of an Oil Drum?
- tensor0910
- · Replies 2 ·
An oil filled system- finding d
- tensor0910
- · Replies 2 ·
Energy stored in Capacitor Network
- AlisonL
- · Replies 2 ·
Find A Such that the Electric Field is Constant
- NiendorfPhysics
- · Replies 6 ·
Four Electric Dipoles = What level of electric flux?
- mikemartinlfs
- · Replies 3 ·
Motion of a charged particle in an uniform electric field
- MBBphys
- · Replies 1 ·
Finding force that ground has on person
- joseph_kijewski
- · Replies 2 ·
Calculating Work Done by Constant Force on Stubborn Pig: Homework Solutions
- Vanessa Avila
- · Replies 5 ·
Kirchoffs Law Parallel Circuit-with only I and R given.Solvable?
- PhysicStragler
- · Replies 10 ·
What is the Correct Direction of Hay Bales in a Basic Relative Motion Problem?
- physicsparent
- · Replies 29 ·
Time for a block to come to a stop on a horizontal surface
- Cocoleia
- · Replies 6 ·
Why Don't Voltmeter Readings Across Different Resistors Add to Source Voltage?
- moenste
- · Replies 26 ·
How Does the Direction of Spring Force Affect the Calculation of Work Done?
- Grawlix
- · Replies 6 ·
Center of momentum frame question:
- Michael12
- · Replies 2 ·
Solve Static Equilibrium: Beam, 520N Force, Cable Tension
- MPat
- · Replies 2 ·
RMS Current through RLC combination ciruit
- KokoDaSilvaback
- · Replies 13 ·
Which Newton's Law Statement is Correct?
- Kevovo
- · Replies 21 ·
Elementary Acoustics Homework: Deducing End Correction
- Henrymed
- · Replies 1 ·
Why is A cross B= ABsin(theta) false?
- Ashley1nOnly
- · Replies 5 ·
When can internal reflection be used to find the index of refraction
- Cocoleia
- · Replies 4 ·
Resistance of the resistor and of the diode
- moenste
- · Replies 25 ·
Calculating the Magnitude of a Projected Force
- Robb
- · Replies 20 ·
Find the angle of an object on an incline (static friction)
- onemic
- · Replies 9 ·
Voltmeter reading in a parallel circuit with two batteries
- moenste
- · Replies 7 ·
How Can a DC Milliammeter Be Adapted to Measure 150V Accurately?
- moenste
- · Replies 11 ·
Forces pulley and bricks Problem
- Veronica_Oles
- · Replies 10 ·
Tangential and Normal of a rotating mass
- nysnacc
- · Replies 9 ·
Projectile Motion: Solving for Distance with Integration
- nysnacc
- · Replies 1 ·
Calculating the Minimum Force for Box to Move at Constant Velocity
- Watney
- · Replies 2 ·
What is the relationship between force and potential energy?
- ChloeYip
- · Replies 1 ·
Two sphere collision -- What's the speed?
- emily081715
- · Replies 6 ·
High School Level Physics Homework
- Itsreason
- · Replies 1 ·
How Do You Solve Complex Kirchhoff's Law Problems?
- BirdK
- · Replies 5 ·
How do you find acceleration using Hooke's law?
- Sciencelover91
- · Replies 3 ·
Mutilple beam reflection question in Fabry-Perot cavity
- anthony27149
- · Replies 1 ·
River Flow Rate: Find Answer b in 1.5m/s at 28°
- ChloeYip
- · Replies 3 ·
Question concerning photoelectric effect lab
- Elvis 123456789
- · Replies 1 ·
What is the centripetal acceleration and force on a rotating bolt?
- Jrlinton
- · Replies 1 ·
A bullet pushing a knot out of a wood block
- emily081715
- · Replies 13 ·
Current through ammeter with two batteries
- moenste
- · Replies 14 ·
Electrostatics/Electric Field Question
- tyrostoken
- · Replies 1 ·
Trying to separate vector into x and y components
- cmkluza
- · Replies 1 ·
Invariance of the spacetime interval under Lorentz transformation
- Kunhee
- · Replies 5 ·
Find the voltmeter reading in a circuit
- moenste
- · Replies 3 ·
Force balance equations with moving base
- rihitz
- · Replies 1 ·
Dropping Beads and their velocity?
- Olive1923
- · Replies 3 ·
Why is it important to follow your assigned seat position on a plane?
- ChloeYip
- · Replies 10 ·
Percentage of Original KE that is Convertible
- Sunbodi
- · Replies 6 ·
Did I make a mistake in my balance force equations for homework?
- rihitz
- · Replies 3 ·
Rocket Launch: Achieving Escape Velocity w/ Fuel-Mass Ratio of 300
- Sudo
- · Replies 3 ·
Force equations: Force on ground by angled supports
- rihitz
- · Replies 21 ·
What is the tension and velocity in a rope attached to a moving space station?
- elf197320501
- · Replies 3 ·
Rotational motion: playground spinning disk problem
- ChrisBrandsborg
- · Replies 54 ·
Relative Motion: Calculating the Angle for Accurate Newspaper Delivery
- hamza2095
- · Replies 2 ·
How Does Newton's 2nd Law Apply to a Changing Mass Rope on a Frictionless Table?
- Mr Davis 97
- · Replies 2 ·
Need help understanding this concept regarding melting ice
- horsedeg
- · Replies 5 ·
The work needed to move a mass of 5.41 kg 39.5 m
- vosteven
- · Replies 3 ·
Projectile - Speed and angle for football just clearing goalposts
- ken.drea
- · Replies 1 ·
When Will the Police Officer Pass You?
- Mohamed Drahaman
- · Replies 10 ·
Acrobat & Monkey: Max Height Reached
- Mr Davis 97
- · Replies 3 ·
P= F(t) • V(t) vs P = F • V to find power done
- Vitani11
- · Replies 2 ·
Energy for Linear 1D Systems - 1D potential
- thecourtholio
- · Replies 4 ·
Finding the Value of Gravity Given Height and Velocity
- Oannes
- · Replies 9 ·
The actual force on the ground from a falling body's impact
- peter010
- · Replies 18 ·
Moments and Force: Calculating Distance and Mass of a Caravan
- radaway
- · Replies 1 ·
A falling stone takes 0.28 s to travel past a window 2.2 m...
- teatime95
- · Replies 4 ·
Moments and force -- Forces on a cantilever hole punch
- radaway
- · Replies 5 ·
How Long for a Police Car to Catch a Speeder?
- ExaltedProphecy
- · Replies 11 ·