Introductory Physics Homework Help Forum

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Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
How Are Potential Energy and Work Related in Physics?
  • whitehorsey
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Moment of Inertia of a regular hexagonal plate?
  • CrimsonFlash
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2
What is the Initial Energy of a Rolling Bowling Ball?
  • freshcoast
  • · Replies 10 ·
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10
Finding the center of mass of an incomplete circle
  • Jbray
  • · Replies 5 ·
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5
Motion of charge at centre of ring
  • Saitama
  • · Replies 12 ·
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12
Distance between maxima of two-slit interference
  • PhizKid
  • · Replies 3 ·
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3
Calculating work and KE on moving cart
  • nikki101
  • · Replies 1 ·
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1
Entropy Of Mixing and Specific Heat
  • Point Conception
  • · Replies 17 ·
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17
Work done down an inclined plane
  • Dongorgon
  • · Replies 3 ·
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3
Particle on a Circle Homework: Solving with Newton's Law
  • faen
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4
Series parallel combination circuit
  • Alexeia
  • · Replies 11 ·
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11
Calculating Energy Released by Fission of 1g of U-235
  • kingstar
  • · Replies 2 ·
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2
Charging then discharging Capacitor.
  • SherlockOhms
  • · Replies 21 ·
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21
Voltage dependent Current source
  • xlu2
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5
Diffraction Grating Angle Between Second Order Maxima
  • Kumo
  • · Replies 1 ·
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1
Hooke's law = negative spring constant?
  • scolaiw
  • · Replies 5 ·
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5
Trigonometry Practice Problems: Finding Distances and Angles
  • eddievic
  • · Replies 5 ·
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5
Easy beginner torque/com question. please
  • martinlematre
  • · Replies 13 ·
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13
A bit of confusion on a simple thermodynamics problem.
  • thepatient
  • · Replies 6 ·
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6
Work Done by an Insulating Sphere on a test charge
  • tyler3902
  • · Replies 4 ·
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4
Setting up Forces: Finding Theta of F2
  • whynot314
  • · Replies 3 ·
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3
Theory of Electric Circuit: Potential Difference and Internal Resistance
  • songoku
  • · Replies 9 ·
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9
Angular Acceleration of a Rigid Bar
  • reuben19
  • · Replies 1 ·
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1
What Is the Initial Decay Rate of a 1.2mg Sample of Phosphorus-32?
  • MarcL
  • · Replies 21 ·
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21
Calculating Ring Capacitance: MKS Units & Math Involved
  • Saitama
  • · Replies 3 ·
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3
Three identical blocks connected by ideal strings, Find Horizontal F
  • khem student
  • · Replies 12 ·
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12
Projectile motion problem (find the angle) other ways?
  • powerof
  • · Replies 9 ·
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9
Rolling motion- experimental data differs from expectation
  • Persimmon
  • · Replies 6 ·
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6
What is the current flowing in resistor BC in a complex circuit?
  • kingstar
  • · Replies 7 ·
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7
Already-charged Capacitor Voltage time function
  • libelec
  • · Replies 9 ·
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9
Understanding the PV Diagram of a Monatomic Gas
  • PhizKid
  • · Replies 3 ·
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3
Most Generalized Lensmaker's Equation
  • TaylorRiles
  • · Replies 1 ·
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1
Electric circuits problems, finding current.
  • physics604
  • · Replies 4 ·
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4
M2= 6/4M1 F/M2 = F/(6/4M1) 4.8ms-1 = F/M2
  • Dolan
  • · Replies 13 ·
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13
How Does Charge Distribution Affect Electric Fields in Nested Conductors?
  • theunbeatable
  • · Replies 10 ·
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10
Maxwell-Boltzmann distribution for transport equations
  • Denver Dang
  • · Replies 2 ·
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2
Electric circuits, finding current with terminal voltage
  • physics604
  • · Replies 5 ·
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5
Coordinates of centre of mass of lamina
  • diorific
  • · Replies 13 ·
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13
Electric circuit problem, finding current through a resistor
  • physics604
  • · Replies 2 ·
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2
Electric circuit problem, finding internal resistance
  • physics604
  • · Replies 1 ·
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1
Direction problem; find angle to shortest path with wind
  • caveman127
  • · Replies 2 ·
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2
Phase velocity of EM radiation in free space
  • ZedCar
  • · Replies 7 ·
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7
Mathematical Logic and Structures
  • rafa_mota04
  • · Replies 1 ·
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1
Current in inductor used to measure EMF.
  • peripatein
  • · Replies 4 ·
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4
Physics: Vectors & their scalar product
  • sakau2007
  • · Replies 3 ·
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3
Physics Problem using Equations of Motion
  • Scarecrow13
  • · Replies 9 ·
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9
New pressure of a gas when the volume changes at const Temperature
  • mrcotton
  • · Replies 2 ·
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2
Two blocks and a massless horizontal spring question?
  • nitin4422
  • · Replies 16 ·
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16
Point where magnetic field cancels between two current carrying wires.
  • SherlockOhms
  • · Replies 7 ·
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7
Do Charged Objects Lose Their Charge in Air?
  • ShizukaSm
  • · Replies 3 ·
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3
Charged mass connected to spring, swung in circle in mag. field
  • clubguppy
  • · Replies 4 ·
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4
How Fast is the Image Moving in Optics?
  • PhizKid
  • · Replies 15 ·
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15
Calculating the Flow Speed of Tea In a Tank
  • Numeriprimi
  • · Replies 4 ·
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4
Statics Engineering Problem Involving Beams
  • forexpipz
  • · Replies 4 ·
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4
What are some examples of when waves are useful and harmful?
  • needingtoknow
  • · Replies 2 ·
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2
Question regarding Lorentz force.
  • peripatein
  • · Replies 8 ·
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8
Magnetic field due to infinite plane
  • Saitama
  • · Replies 2 ·
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2
Brewster angle and reflected light
  • notnewton96
  • · Replies 4 ·
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4
Modeling a mass-spring-damper system
  • VitaX
  • · Replies 7 ·
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7
Seemingly simple kinematics exercise
  • dunn
  • · Replies 3 ·
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3
Is this the correct way to find apparent power and power factor
  • pokie_panda
  • · Replies 1 ·
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1
I have a tricky problem involving an electron and photon.
  • gsurfer04
  • · Replies 28 ·
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28
Why Is There No Normal Force on the Second Block in Contact Systems?
  • whoareyou
  • · Replies 3 ·
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3
Inductance of Solenoid on Coaxial Cable
  • ArtVandelay
  • · Replies 9 ·
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9
Projectile(no height) and Displacement(Gravity)
  • Evolution17
  • · Replies 2 ·
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2
Calculating average power using impedance and rms current
  • pokie_panda
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1
Boat's conservation of momentum
  • quark001
  • · Replies 3 ·
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3
What is the phase velocity of light in glass?
  • ZedCar
  • · Replies 2 ·
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2
Polarizers in series, I got the correct answer, want to verify why
  • breakingaway
  • · Replies 1 ·
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1
Calculating Relativistic Mass of Rotating Object
  • Smelly Eggs
  • · Replies 2 ·
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2
Find greatest acceleration and speed
  • songoku
  • · Replies 11 ·
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11
Net Power In a Charged Rotating Cylinder
  • Erubus
  • · Replies 9 ·
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9
Find the voltage of an inductor in an LR circuit
  • crashdirty86
  • · Replies 12 ·
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12
How Do You Calculate Angular Velocity at Maximum Height in Projectile Motion?
  • Draco27
  • · Replies 12 ·
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12
Bumblebee uncertainty question
  • Nathew
  • · Replies 11 ·
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11
Why is gravity taken as positive?
  • whitehorsey
  • · Replies 6 ·
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6
Calculating the required motor size to move a load.
  • Anasazi
  • · Replies 20 ·
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20
Date An Object Using Carbon Dating, Beta Decay
  • breakingaway
  • · Replies 7 ·
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7
Tension on string of submerged object.
  • SherlockOhms
  • · Replies 7 ·
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7
Finding Eccentricity of Orbit Given Masses, Positions, and Velocities
  • jgoldst1
  • · Replies 1 ·
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1
Free fall acceleration concept question
  • xzibition8612
  • · Replies 6 ·
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6
How Is EMF Induced in a Loop Within a Solenoid?
  • kinof
  • · Replies 1 ·
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1
Past exam question about electrostatic field and potential
  • ZedCar
  • · Replies 5 ·
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5
Splitting vectors into Components
  • ninfinity
  • · Replies 1 ·
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1
Question- Angular Simple Harmonic motion
  • sankalpmittal
  • · Replies 25 ·
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25
Representing a radius vector in a Cartesian system for a simulation
  • scienalc
  • · Replies 12 ·
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12
Three forces - in equilibrium or not?
  • shin777
  • · Replies 2 ·
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2
Help with piston and atmospheric pressure
  • shrrikesh
  • · Replies 8 ·
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8
How Does a Cube Fall When Balanced on Edge?
  • thecommexokid
  • · Replies 7 ·
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7
Four Protons Are Fused Into An Alpha Particle, Energy Released
  • breakingaway
  • · Replies 5 ·
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5
Combining Momentum with Friction
  • student34
  • · Replies 7 ·
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7
Entropy For Irrevesible Process
  • Point Conception
  • · Replies 9 ·
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9
Finding the Distance for a Zero Electric Field at a Corner of a Square
  • thercias
  • · Replies 6 ·
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6
Directions/signs question about force-equilibrium problem
  • s3a
  • · Replies 5 ·
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5
Angular Velocity w/2 welded disks
  • CollegeStudent
  • · Replies 1 ·
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1
Phase Difference of a light wave
  • Erubus
  • · Replies 4 ·
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4
What is the equation for calculating molecular flux for a gas?
  • Erubus
  • · Replies 4 ·
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4
Circuit analysis is this correct?
  • Questions999
  • · Replies 2 ·
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2
What is the average lifetime of a Muon in the laboratory frame?
  • lmstaples
  • · Replies 1 ·
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1
Why Does a Magnetic Field Do Zero Work?
  • conorordan
  • · Replies 1 ·
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1