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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Confusion - Diff Eq for a Circuit? What does my professor mean?
- twotaileddemon
- · Replies 2 ·
Total charge of electrons in 1.77 Kg of H20
- hiimpaul123
- · Replies 1 ·
How Long Does It Take an Asteroid to Orbit the Sun Compared to Earth?
- Brittykitty
- · Replies 6 ·
Force per unit length of wires-
- yankeekd25
- · Replies 1 ·
Stabalizing an egg drop project
- Tojo Joe
- · Replies 1 ·
Calculating Current in a Basic Resistor Circuit
- CompEguy
- · Replies 1 ·
Calculating Eccentricity for an Elliptical Orbit
- superaznnerd
- · Replies 2 ·
Solving a Basic RC Circuit: Charge on Capacitor from 537 to 195 μC
- CompEguy
- · Replies 3 ·
How Does Pipe Area Change Affect Fluid Velocity and Pressure?
- Brabs23
- · Replies 1 ·
Current and Power in DC Circuits
- Flaneuse
- · Replies 1 ·
Loop Rule - Batteries and Resistors
- ihearyourecho
- · Replies 2 ·
Circular Motion and Force Problem
- cheerspens
- · Replies 1 ·
Magnetic force on sides of square solenoid
- physicsnublet
- · Replies 1 ·
Ratio of rotational kinetic energy of Earth to Moon
- maxgotsrice
- · Replies 1 ·
Calculating Electron Orbit Radius in a Magnetic Field
- kmikias
- · Replies 1 ·
What will the electric field be at point at a distance r=5cm
- zahraa
- · Replies 1 ·
Thermodynamics and Entropy: Does an Atom's Energy Decrease Over Time?
- cowcow8866
- · Replies 5 ·
Magnetic field magnitude and direction at points A, B, C
- aloko
- · Replies 2 ·
Deriving tangential and normal acceleration components
- Markel
- · Replies 1 ·
Kinetics, force and acceleration
- red123
- · Replies 4 ·
What Range of Acceleration Will Cause a Block to Slip Down an Accelerating Ramp?
- gaobo9109
- · Replies 8 ·
How Do You Calculate Horizontal Angles in Surveying?
- ScieneBoy
- · Replies 3 ·
Calculating Speed of Simple Pendulum at 25° Angle
- ashvuck101
- · Replies 1 ·
Projectile ball velocity physics problem
- Tiger15
- · Replies 2 ·
Conservation of energy: How do I know?
- sushiserv
- · Replies 1 ·
Specific charge of Cu2+ ion with mass number 63
- aurao2003
- · Replies 9 ·
Carrier wave frequency spectrum
- mathman44
- · Replies 2 ·
Turbine output power with gauge pressures and Bernoulli's equation
- Brabs23
- · Replies 9 ·
Solve Equilibrium Problem: Painter & Scaffold
- kee23
- · Replies 5 ·
Solving for Refractive Index: Light Beam Incident on Glass Slide
- eltavo809
- · Replies 1 ·
What is the density and uncertainty of a given object?
- gdogga
- · Replies 1 ·
How Do You Calculate the Motion of Rotating Objects in Physics?
- jellis26
- · Replies 1 ·
How do u convert relative angle to absolute angles?
- Luongo
- · Replies 4 ·
How Does Friction Affect the Ball's Velocity at the Table Edge?
- cheerspens
- · Replies 15 ·
Calculating Upward Force in Ornithopters
- shen85
- · Replies 7 ·
Projectile motion of shotputter
- steve snash
- · Replies 6 ·
Impulse of a firefighter's net on boy
- rechitzy
- · Replies 3 ·
Wheelbarrow in Static equilibrium
- sheepcountme
- · Replies 1 ·
Work in mechanics vs. work in thermodynamics
- Leon4735
- · Replies 3 ·
Normal Force - riding over a hill
- mybrohshi5
- · Replies 3 ·
Potential Difference and Resistors
- ihearyourecho
- · Replies 7 ·
How Can an AC Generator Be Converted to Produce DC?
- jumpyroo92
- · Replies 1 ·
Particle in a magnetic field - x,y,z components
- Luxe
- · Replies 1 ·
Electric field forces in the limit x>>a
- baseballman
- · Replies 5 ·
Pressure in a pipe of varying size
- 8cd03gro
- · Replies 1 ·
Calculate the energy lost to friction
- okgo
- · Replies 1 ·
Average Acceleration During a Collision
- Ripcurl
- · Replies 1 ·
Frequency and period of light wave calculations
- mmmboh
- · Replies 5 ·
Finding the period when given rotation rate in rev/min
- cheerspens
- · Replies 3 ·
Calculating Variable Pulling Force on a Spring on an Arc
- mybrohshi5
- · Replies 4 ·
Two gold balls colliding, find initial velocity using momentum conservation
- pitaaa
- · Replies 5 ·
Solving an Equilibrium Problem Involving Torque: Need Help!
- findley
- · Replies 7 ·
Finding Mass of a Sphere
- Ripcurl
- · Replies 4 ·
Why do we relate mass and velocity to find momentum
- Champdx
- · Replies 2 ·
Determining Capacitance in Different Kinds of Capacitors
- sweetdion
- · Replies 4 ·
Rotational kinetic energy of a flywheel
- mfm578
- · Replies 2 ·
How long does it take for a ball to hit the ground from a table edge?
- cheerspens
- · Replies 5 ·
Using kinetic and dynamic principles to determine unknown parameters
- PDrizzle
- · Replies 2 ·
What is the Average Speed for a Car Trip with Different Constant Speeds?
- Ripcurl
- · Replies 8 ·
Angle between radius vector and positive x axis from Cartesian coordinates
- tngo1206
- · Replies 11 ·
Pendulum collision project: what else can I calculate with momentum and energy?
- HeadHurts
- · Replies 6 ·
What Applied Force is Needed to Push a Box Up a Ramp at 50 Degrees?
- bratleroni
- · Replies 3 ·
Calculate distance given acceleration, initial and final speed
- AQuestionX
- · Replies 1 ·
Calculating Power of Motorcycle on Sloped Road
- ny_aish
- · Replies 8 ·
Displacement, velocity and acceleration at different points on a simple pendulum
- XuFyaN
- · Replies 1 ·
Force required to pull loop from magnetic field
- t_n_p
- · Replies 15 ·
Finding voltage drops in circuit with parallel resistors
- Defagment
- · Replies 8 ·
Stored Energy in two Parallel Plate Capacitors
- sweetdion
- · Replies 2 ·
Moment of inertia of pulley with and without point masses
- noname1
- · Replies 1 ·
What is the degrees of freedom of helium gas ?
- thereddevils
- · Replies 1 ·
Two stacked blocks with applied force, finding acceleration when F is twice maximum
- clark1089
- · Replies 2 ·
Deriving Newton's law of cooling
- Doctor_Doom
- · Replies 2 ·
Charged particle slowing between parallel plates at -70V and -50V
- demonelite123
- · Replies 4 ·
Center of gravity of a water-filled truncated cone bucket
- yang09
- · Replies 5 ·
Final Pressure of Toxic Gas in Cylinder
- roam
- · Replies 1 ·
What is the resistance of the voltmeter in this series circuit?
- thereddevils
- · Replies 2 ·
Capacitors and switches problem
- kihr
- · Replies 1 ·
Average speed vs average velocity
- roam
- · Replies 1 ·
Resistance and Ohm's Law Problem
- clairez93
- · Replies 4 ·
Work Done by Normal Force: 40kg Box Pushed 5m over Rough Floor
- Paymemoney
- · Replies 4 ·
Electric field in a region with constant potential
- zdotcom
- · Replies 1 ·
Kinetic Energy and the Power of Human Climbing
- jolly_20
- · Replies 1 ·
A couple question on illumination.
- jefgreen
- · Replies 7 ·
Time to Lift 50 15.0-kg Boxes at 41.4 W Output
- mphysicsdc
- · Replies 1 ·
Is There Solid Evidence of Magnetic Monopoles?
- fcb
- · Replies 1 ·
Post-Impact Speed of Colliding Billiard Balls
- rechitzy
- · Replies 3 ·
Solving Carnot Heat Engine: Tf = SQRT(TcTh)
- Carlo09
- · Replies 5 ·
Force direction on loop near LC circuit at t = 4.20 ms
- Samuelb88
- · Replies 4 ·
What is Refraction? Examples of Abrupt and Gradual Refraction
- yakabod
- · Replies 11 ·
Circular Motion of a spinning mass
- sighman
- · Replies 1 ·
Why do voltage and energy increase when pulling apart a charged capacitor?
- zdotcom
- · Replies 2 ·
Current and voltage across resistors
- master_mind
- · Replies 4 ·
Calculating pressure acting on sides of tank
- Whatamiat
- · Replies 1 ·
Photoelectric Effect: Calculating Potential Difference
- Sassenav22
- · Replies 2 ·
Solving Piston & Spring Homework Problem - Work, Temp & Heat Input
- Carlo09
- · Replies 6 ·
Acceleration vs Time Graph in Simple Pendulum
- XuFyaN
- · Replies 6 ·
What are the Unknown EMF and Currents in this Kirchhoff's Circuit?
- Bob Loblaw
- · Replies 2 ·
Finding K when work done on a particle is 90K joules from t=0 to t=4s
- particlemania
- · Replies 7 ·
A rod with two balls on each side - what do the scales on each side show?
- Ryker
- · Replies 9 ·
Difference between Time periods
- XuFyaN
- · Replies 1 ·