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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Falling Particle: Solving for Initial Velocity and Acceleration
- sudec
- · Replies 1 ·
Bullet embeds in spring-block: why do I get a negative square root?
- yang09
- · Replies 21 ·
Very Relativity problem(True or False)?
- SAT2400
- · Replies 2 ·
How Strong is the Force Between a Uranium Nucleus and an Electron at 0.1 nm?
- Sashikala
- · Replies 2 ·
Magnetism - Circular Loop in a Perpendicular Magnetic Field
- ll1111
- · Replies 2 ·
Solving for Spring Constant of Oscillating Spring
- Glorzifen
- · Replies 2 ·
Finding velocity with rotational and potential energy
- carlodelmundo
- · Replies 4 ·
Determine the equivalent resistance of the circuit
- zelda1850
- · Replies 6 ·
AT: Calculating Temperature T for Two Carnot Engines in Series
- Vanessa
- · Replies 1 ·
Fresnel's Rhomb and polarization
- tuomas22
- · Replies 3 ·
How Do Multi-Driver Speaker Systems Achieve Full Spectrum Sound?
- brown_matt
- · Replies 7 ·
Watt needed to heat up an iron, correct?
- user0n9
- · Replies 1 ·
Tension on two chains holding a board
- Physsics
- · Replies 5 ·
Spring projectile landing 3.75 m using energy and kinematics
- adnama
- · Replies 3 ·
Constant Angular Acceleration Question
- Paymemoney
- · Replies 4 ·
Simple Harmonic Motion, platform and box
- sheepcountme
- · Replies 3 ·
Graph of a cart in motion using ticker tape
- Mystikal69
- · Replies 1 ·
Finding lift distance to keep a 10 m pole horizontal with two people lifting
- luysion
- · Replies 1 ·
What is the Net Resistance in a Circuit with Multiple 2.8Kohm Resistors?
- thermocleanse
- · Replies 11 ·
Deriving Magnetic Field Magnitude using Ampere's Law
- alanthreonus
- · Replies 1 ·
How Many Revolutions Does a CD Make When Stopping?
- Paymemoney
- · Replies 2 ·
Simple Harmonic Motion, rigid pendulum
- sheepcountme
- · Replies 3 ·
Why must the plastic block in a refraction lab be semi-circular?
- bleedblue1234
- · Replies 1 ·
Minimum deviation in a Prism -
- reyaz1
- · Replies 1 ·
Forces between charges. Did the problem, have question on the result.
- frozenguy
- · Replies 3 ·
Pressure Variation in a Tilted Fluid Column
- luysion
- · Replies 1 ·
Solving for Phase Constant: Simple Harmonic Motion
- Glorzifen
- · Replies 3 ·
Manipulating Simple Harmonic Motion Equation
- Glorzifen
- · Replies 3 ·
Why does efficiency vs height look like an x² curve in our lab?
- Trooper100
- · Replies 5 ·
Angular velocity of sphere and two points
- KaiserBrandon
- · Replies 1 ·
Spacecraft speed in low lunar orbit
- heyitslars
- · Replies 3 ·
Interference of light - flat glass and an air wedge
- glass.shards
- · Replies 1 ·
Tarzan, angel that rope breaks.
- juggalomike
- · Replies 3 ·
Collisions/conservation of energy[conceptual]
- anti404
- · Replies 3 ·
Strangely Confusing mechanics problem
- SelfStudy
- · Replies 10 ·
Electric field problem with acceleration
- BoldKnight399
- · Replies 5 ·
Block in SHM struck by bullet at equilibrium
- yang09
- · Replies 14 ·
Finding electric field when alpha particle exits capacitor
- abcdmichelle
- · Replies 5 ·
Neutron star mass for surface material to remain in place
- noname1
- · Replies 1 ·
What are the deceleration and average braking force of a train?
- IB1
- · Replies 3 ·
What is the applied force required to push an object up a ramp?
- KenMasters
- · Replies 9 ·
Will current take the path of least impedance in this circuit?
- Juwane
- · Replies 1 ·
Center of mass and Moment of Intertia
- sally21
- · Replies 3 ·
Finding angular velocity after block is moved from middle to outside of disc
- snoworskate
- · Replies 2 ·
Work Needed to Accelerate 2008 Dodge Viper SRT
- lolcatz
- · Replies 5 ·
What is the Electric Field in a Cylindrical Sheath?
- abcdmichelle
- · Replies 4 ·
Moment of inertia of disc plus point mass at centre
- indie452
- · Replies 14 ·
Plano-concave thin lens, checking my result
- fluidistic
- · Replies 6 ·
Calculating the Center of Mass of a Boat with 3 People
- Susanne217
- · Replies 4 ·
Minimum force to tip a 430 N cabinet with 54 cm width and 100 cm height
- iamhoms
- · Replies 2 ·
Differntial of wave equation solution
- bfed
- · Replies 1 ·
Calculating Error in Linearized Data: What is the Method?
- Dennisl
- · Replies 5 ·
Calculating Charge on Capacitors in a Two-Way Switch Circuit
- Sekonda
- · Replies 5 ·
Magnitude and Direction of Magnetic Field
- thermocleanse
- · Replies 3 ·
Magnitudes and Directions of Currents in Resistor
- thermocleanse
- · Replies 2 ·
Two slit diffraction, neutron, kinetic energy
- Yroyathon
- · Replies 9 ·
Fluid statics seems easy but can't figure it out .
- gikwiye
- · Replies 13 ·
What is Young Modulus and Why Does it Matter?
- XuFyaN
- · Replies 8 ·
Calculate the equivalent resistance of the circuit
- zelda1850
- · Replies 4 ·
How Does Changing Length and Area Affect the Resistance of Copper Wires?
- zelda1850
- · Replies 5 ·
Electric Fields/ Electric Potential
- Cilabitaon
- · Replies 4 ·
Proving Thermodynamics equations using partial derivatives
- cowcow8866
- · Replies 8 ·
Problem 1.136 from Irodov's book
- issacnewton
- · Replies 10 ·
Calculate Max Speed of Truck on Unbanked Curve Without Eggs Sliding
- Paymemoney
- · Replies 40 ·
Gravitational potential of two equal stars
- benf.stokes
- · Replies 4 ·
Finding temperature in state A of a three-step ideal gas cycle
- roam
- · Replies 4 ·
Ray of light striking a plastic sheet
- imatreyu
- · Replies 9 ·
Electrical Wiring - corrosion, cracking and resistance.
- Astar
- · Replies 3 ·
Work done per cycle in a Stirling engine with volume doubling
- roam
- · Replies 3 ·
Given two vectors find a unit vector that is perpendicular
- 1man
- · Replies 4 ·
Spring Mass system where springs also have mass
- sleventh
- · Replies 1 ·
Banked Roadway: Car Speed on a Curved Surface w/o Friction Force
- roam
- · Replies 1 ·
U-tube with Equilibrium Configuration
- mparsons06
- · Replies 1 ·
Using Newton's third law to explain walking and rocket acceleration
- xdeanna
- · Replies 10 ·
Calculating Pressure Exerted by a Woman Standing on High-Heeled Shoes
- mparsons06
- · Replies 2 ·
Calculating Fluid Pressure for Viscosity-Injection Problem
- afg_91320
- · Replies 8 ·
Is the pressure on a diver different from the pressure on a lungfish?
- jumbogala
- · Replies 3 ·
Turbulent flow, verifying a general DE solution
- redbeard
- · Replies 3 ·
How does brightness of light globes change when different switches are closed?
- TyErd
- · Replies 8 ·
Consevative and non-conservative forces
- Tmtamrak
- · Replies 4 ·
Wave Interference and sound waves
- gilsone
- · Replies 1 ·
Estimating Pressure on a Person Standing on the Ground
- jumbogala
- · Replies 4 ·
LED States in Current and Reverse Bias Circuit
- TyErd
- · Replies 2 ·
Determine the ratio of resistance
- TyErd
- · Replies 3 ·
Horizontal acceleration of an aircraft
- roam
- · Replies 6 ·
Estimating Delta(g)/g for a 1.00 km Diameter Spherical Pocket of Oil
- Charanjit
- · Replies 3 ·
Calculating density Archimedes principle
- noname1
- · Replies 3 ·
Superposition of 2 Waves: Equation
- jumbogala
- · Replies 2 ·
Simple Constant acceleration equation but I dont get it
- FireWarden
- · Replies 4 ·
Gravitational Fields and Satellite Motion
- Cilabitaon
- · Replies 6 ·
Finding braking distance from 96 to 48 km/h with 2.68 m/s² deceleration
- turkusmaximus
- · Replies 15 ·
Finding Resistance of Voltmeter in RC Circuit
- platonic
- · Replies 19 ·
Potential Difference: 1 J = ? V
- zelda1850
- · Replies 3 ·
Rutherford Scattering Problem.
- Cilabitaon
- · Replies 10 ·
Identifying Electric Charge on Objects
- zelda1850
- · Replies 4 ·
What is the magnitude of gravitational force between Earth and the Moon?
- zelda1850
- · Replies 6 ·
Calculate the neutrino flux from the sun
- warfreak131
- · Replies 4 ·
Work done during expansion of a gas
- tanzerino
- · Replies 4 ·
Impulse on a Pendulum with a Bullet
- ash-kennard
- · Replies 4 ·
Momentum change in collision, center of mass, and elastic pool collision
- SoulInNeed
- · Replies 13 ·