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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Finding acceleration with ideal pulley
- David Mordigal
- · Replies 3 ·
What Is the Approximation for the Roche Limit?
- physicstudent_B
- · Replies 7 ·
Matrix representation of a quantum system
- whatisgoingon
- · Replies 3 ·
Change in entropy of an ideal gas during thermodynamic cycle
- Elvis 123456789
- · Replies 1 ·
Find initial current and resistance in a circuit
- moenste
- · Replies 37 ·
Why Can I Assume Constant Velocity for a Falling Loop in a Magnetic Field?
- Reverend Shabazz
- · Replies 13 ·
Troubleshooting Answers to Easy Physics Questions on LON-CAPA
- Mert Kerem Yavuz
- · Replies 7 ·
Understanding derivation of -du/dx = F
- hsbhsb
- · Replies 4 ·
Two-car inelastic collision with momentum conservation in x and y directions
- 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 ·
Force in cord ABC with 4.4-kg block and 0.15 m sag
- 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 ·
Sound wave reflection problems 21 and 22
- Clara Chung
- · Replies 5 ·
Equation of motion for the system, and determine the frequen
- Chhung
- · Replies 8 ·
Impedance and resonant frequency for series RL with parallel C
- 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 ·
Work done by 34.1 N force on pig at different displacements
- 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 ·
Finding end correction from length vs 1/frequency graph
- Henrymed
- · Replies 1 ·
Why is A cross B= ABsin(theta) false?
- Ashley1nOnly
- · Replies 5 ·
Finding index of refraction using total internal reflection
- 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 ·
Shortest highway between two towns 35km south and 72km west
- Itsreason
- · Replies 1 ·
Solving system of Kirchhoff equations for circuit currents
- BirdK
- · Replies 5 ·
How do you find acceleration using Hooke's law?
- Sciencelover91
- · Replies 3 ·
Multiple beam reflection 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 balance for angled supports with 60 kN load
- rihitz
- · Replies 21 ·
What is the tension and velocity in a rope attached to a moving space station?
- elf197320501
- · Replies 3 ·
Child on spinning playground disc: friction and angular velocity
- 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 ·
Why does adding ice to warm water result in a final temperature of 0°C?
- 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 ·
Why use momentum conservation when gravity acts on the acrobat and monkey
- 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 ·