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 Does the Speed Distribution Function Determine Vmin and Vmax?
  • reactor
  • · Replies 4 ·
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Resultant Velocity of a Projectile
  • malti001
  • · Replies 5 ·
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5
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8K
Calculating distance of image from lens
  • agoogler
  • · Replies 4 ·
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4
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3K
What is the Optimal Traction Power for Unrolling Toilet Paper?
  • 2013
  • · Replies 73 ·
3
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73
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11K
Expansions in thermodynamics using differentials
  • CAF123
  • · Replies 42 ·
2
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42
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Adding force vectors and then calculating acceleration.
  • agoogler
  • · Replies 5 ·
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5
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2K
Is Gravitational Attraction Negligible in Oscillating Systems?
  • Saitama
  • · Replies 79 ·
3
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79
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Relative speed with respect to mirror image in two dimensional motion
  • agoogler
  • · Replies 23 ·
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23
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Bernouilli's principle pipe flow problem
  • pianopanda
  • · Replies 5 ·
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5
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What is the resistivity of a copper wire with given dimensions and length?
  • freddy13
  • · Replies 1 ·
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1
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Time period of a pendulum consisting of a rod and bob
  • justwild
  • · Replies 1 ·
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1
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Calculating the Charge of 3 Capacitors
  • freddy13
  • · Replies 9 ·
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9
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Calculating Velocity Using Power
  • thedude36
  • · Replies 1 ·
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1
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Will Supplies Dropped from a Plane Land Safely on a Small Island?
  • STEMucator
  • · Replies 3 ·
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3
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2K
What Is the Final Temperature When Ice and Water Mix?
  • shin777
  • · Replies 8 ·
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8
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Initial vs final for a projectile
  • judas_priest
  • · Replies 3 ·
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3
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Focal length of a convex mirror
  • aChordate
  • · Replies 9 ·
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9
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3K
What is the Velocity of a Disc Thrown at a 28° Angle to the Ground?
  • STEMucator
  • · Replies 10 ·
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10
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2K
Running Red Lights: How Fast Do You Have to Go?
  • aChordate
  • · Replies 8 ·
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8
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Help with projectile motion problem
  • brightside
  • · Replies 7 ·
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7
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Why Is Potential Energy Calculated from the Bottom of the Circle?
  • duplaimp
  • · Replies 19 ·
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19
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9K
Oblique collision with two spheres one of which is at rest
  • Woolyabyss
  • · Replies 2 ·
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2
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3K
What are point charges?Why we use point charges for coulomb's law?
  • kashan123999
  • · Replies 8 ·
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8
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5K
How Is the Focal Length of a Mirror Determined When the Image Size Doubles?
  • aChordate
  • · Replies 2 ·
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2
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Calculate charge on object suspended between capacitor plates
  • PoppletonPlace
  • · Replies 6 ·
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6
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4K
Polarization: ratio of transmitted to incident intensity
  • aChordate
  • · Replies 1 ·
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1
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4K
Block, spring, and incline- work/energy
  • natasha13100
  • · Replies 9 ·
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9
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7K
Two quick questions conerncing potential and dielectric
  • Lindsayyyy
  • · Replies 5 ·
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5
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1K
Question regarding Magnetic field
  • utkarshakash
  • · Replies 3 ·
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3
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1K
Total internal reflection inside a fiber optic cable
  • aChordate
  • · Replies 3 ·
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3
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3K
Polarization and decreasing intensity of light to 10%
  • aChordate
  • · Replies 3 ·
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3
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2K
Torque on a point on a sphere in a fluid/finding pressure?
  • 6283186
  • · Replies 5 ·
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5
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Oblique collision involving two spheres
  • Woolyabyss
  • · Replies 8 ·
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8
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4K
About understanding things and solving problems
  • GGalaxy
  • · Replies 3 ·
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3
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1K
Finding distance by angle of incident
  • aChordate
  • · Replies 1 ·
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1
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2K
Electric field lines between 20/30 V point charges vs. 10/0 V
  • miaou5
  • · Replies 4 ·
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4
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3K
Calculate Force Loss: I'm New to Forum
  • thewoodviolin
  • · Replies 11 ·
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11
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2K
The gravitational field g due to a point
  • BadSkittles
  • · Replies 13 ·
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13
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3K
Finding Center of Mass of 800g Steel Plate Triangle
  • Anthonyphy2013
  • · Replies 6 ·
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6
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7K
Calculating work with kinematics and dynamics
  • jjesiee
  • · Replies 8 ·
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8
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7K
What is the distance to the target?
  • oneplusone
  • · Replies 8 ·
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8
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4K
How Does Elevator Motion Affect Work Done by Forces?
  • Enduro
  • · Replies 3 ·
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3
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3K
How long does it take the ball to come to a hault?
  • iScience
  • · Replies 7 ·
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7
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2K
Two infinite sheets with charges
  • BadSkittles
  • · Replies 6 ·
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6
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3K
Can You Orbit an Asteroid by Running?
  • Bashyboy
  • · Replies 15 ·
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15
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3K
Why do two masses move towards each other under gravity?
  • Kyoma
  • · Replies 4 ·
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4
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Confusion on Body Definition in Y&F, 9th, 4-49.
  • Ackbach
  • · Replies 1 ·
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1
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Electric Field and Voltage Equation Applications
  • freddy13
  • · Replies 1 ·
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1
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Time period of oscillation of a physical pendulum and spinning disk
  • Avi Nandi
  • · Replies 3 ·
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3
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6K
How Is Gas Pressure Derived in the Kinetic Theory of Gases?
  • DorelXD
  • · Replies 3 ·
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Radius of a Raindrop given Charge and Electric Potential
  • freddy13
  • · Replies 3 ·
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Problem regardin an elastic wire.
  • DorelXD
  • · Replies 16 ·
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16
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Electric Potential and Field Calculations for Point Charges on the x-Axis
  • rockerdude1210
  • · Replies 7 ·
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7
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Sensor - Calculate the Capacitance
  • 2013
  • · Replies 87 ·
3
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87
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Solve the Homework Problem with Work and Energy
  • Anthonyphy2013
  • · Replies 3 ·
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3
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Magnitude of an Electric Field in a Cylinder
  • freddy13
  • · Replies 1 ·
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1
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Torque Question: How Far Up a Ladder Can 800N Worker Climb?
  • oneplusone
  • · Replies 10 ·
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10
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3K
The photoelectric effect report
  • 5ymmetrica1
  • · Replies 1 ·
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1
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Statics: Internal forces at a point along a beam
  • yaro99
  • · Replies 5 ·
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5
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How Much Work Is Needed to Stretch Two Springs and Move a Cube?
  • duplaimp
  • · Replies 11 ·
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11
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How to solve this without resorting to inertial forces
  • arestes
  • · Replies 3 ·
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3
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Simple Harmonic Motion: Wrench's Moment of Inertia Calculation
  • Anthonyphy2013
  • · Replies 8 ·
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8
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How do I calculate the Velocity when only given the force and weight?
  • camel-man
  • · Replies 2 ·
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2
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Deflection of suspended coil (fluxmeter)
  • Order
  • · Replies 2 ·
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2
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Is (0,0) a Valid Coordinate in a Bounce Height Experiment Graph?
  • TheRedDevil18
  • · Replies 3 ·
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3
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Resolve a force into three parts (3D)
  • John Dough
  • · Replies 6 ·
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6
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Calculate Constant Velocity & Speed for Trapezoid Move
  • robertor
  • · Replies 46 ·
2
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46
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5K
Inelastic collisions in 2 dimensions
  • SohailS
  • · Replies 1 ·
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1
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Gas Leak from Container: Calculating Work Done Against Atmosphere
  • CAF123
  • · Replies 27 ·
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27
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6K
A cylinder rotating in Cartesian coordinate system
  • Earthland
  • · Replies 6 ·
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6
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Work and energy- 1 stationary and 1 swinging block (table+pulley)
  • natasha13100
  • · Replies 21 ·
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21
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4K
A balls velocity when it reaches the top of the inside of a loop
  • jeff.reinecke
  • · Replies 12 ·
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12
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Conservation of Energy of blocks and rope
  • SPiazzo
  • · Replies 4 ·
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4
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How to calculate the work function of a metal?
  • madayag1
  • · Replies 8 ·
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8
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Using the gravitational formula
  • 462chevelle
  • · Replies 9 ·
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9
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1K
Finding Speed of Object Under Central Force: Equations & Solution
  • postfan
  • · Replies 6 ·
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6
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Energy conservation in two dimensions
  • SPiazzo
  • · Replies 2 ·
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2
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Find deceleration from distance and initial velocity
  • -sandro-
  • · Replies 5 ·
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5
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How to Calculate Impulse and Average Net Force in a Baseball Collision
  • SohailS
  • · Replies 6 ·
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6
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Which Sign Describes Phasor Direction in Circular Polarization?
  • Niles
  • · Replies 4 ·
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4
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Rodmechanism relative movements problem
  • wouterbeke
  • · Replies 4 ·
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4
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Geothermal heat pump or heat engine power requirements
  • bkraabel
  • · Replies 8 ·
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8
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4K
How Does Electric Flux Differ Across a Hemispherical Surface?
  • mdf730
  • · Replies 5 ·
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5
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Work done by gavity on an inclined plane
  • fd25t6
  • · Replies 7 ·
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7
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Acceleration of a system with three blocks
  • duplaimp
  • · Replies 2 ·
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2
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Calculating Potential Energy and Velocity in Newton's Cradle Lab
  • gdhillon
  • · Replies 7 ·
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7
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Average power given velocity, kinetic friction, and mass
  • SPiazzo
  • · Replies 1 ·
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1
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Calculating Electric Field Strength Between Two Point Charges
  • jokester4u
  • · Replies 5 ·
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5
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Applying Coulomb's Law: Changes in Charge and Distance
  • webiret
  • · Replies 2 ·
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2
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Statics problem, trailer and truck system
  • yaro99
  • · Replies 6 ·
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6
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5K
Speed of a meteor before hitting a space station
  • andreea_a
  • · Replies 32 ·
2
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32
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5K
What Does a Harmonic Wave Equation Represent in Physics?
  • matywlee
  • · Replies 3 ·
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3
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2K
Solving Rotational Problem: Satellite Elliptical Orbit, Torque & Speed
  • Anthonyphy2013
  • · Replies 4 ·
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4
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2K
Rotation: angular momentum and torque
  • Avi Nandi
  • · Replies 2 ·
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2
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2K
Sound(Determine period, frequency from the plot)
  • wislagrew
  • · Replies 4 ·
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4
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2K
Statics problem, analysis of a frame
  • yaro99
  • · Replies 10 ·
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10
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4K
Kirchhoff's Rule Cap-monster maze
  • Mastur
  • · Replies 5 ·
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5
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11K
Can the Slower Cyclist Win if the Race is Short Enough?
  • judas_priest
  • · Replies 10 ·
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10
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3K
How does the floor contribute to the ball's energy during a bounce?
  • Robertoalva
  • · Replies 33 ·
2
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33
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11K
Electric Field problem ( with integral)
  • izelkay
  • · Replies 4 ·
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4
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2K