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.
Finding ratio of smaller terminal velocity to larger terminal velocity
  • rockchalk1312
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6
Find Height of Ramp: H=1.0m, d=1.0m, θ=30°
  • onelildustbunn
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3
What is the acceleration of block C in a system of connected blocks and pulleys?
  • Saitama
  • · Replies 26 ·
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26
Projectile Motion highest point
  • aaronfue
  • · Replies 6 ·
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6
Minimum coefficient of friction to keep cars from sliding off the road
  • rockchalk1312
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1
Solving Thin Film Problem: Find Longest Wavelength Transmitted to Diver
  • idkgirl
  • · Replies 1 ·
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1
How Long Does It Take for a Particle to Travel Through an Earth-Crossing Tunnel?
  • Avi1995
  • · Replies 10 ·
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10
Field Goal Projectile Motion Problem: Calculating Angle and Speed for NFL Kicker
  • Toranc3
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2
How much energy do we need to vapourize 1 liter of water?
  • charlie95
  • · Replies 6 ·
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6
Calculating Shot Put Release Speed | Projectile Motion Homework Problem
  • Toranc3
  • · Replies 1 ·
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1
Finding Total Power, Current & PF in a Circuit
  • freshbox
  • · Replies 15 ·
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15
Two charged spheres are brought into physical contact with each other.
  • alittlelost
  • · Replies 4 ·
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4
Finding the magnitude and direction in a electric field.
  • Trap_Shooter
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3
Equivalent Electri Force, Find the charge.
  • pmd28
  • · Replies 3 ·
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3
Special relativity relating 3 dimensions
  • Eats Dirt
  • · Replies 3 ·
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3
Electric Potential: Find Distance/Ratio of Charges
  • pmd28
  • · Replies 9 ·
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9
Add 3 Vectors: Magnitude & Angle Calculation
  • Stanc
  • · Replies 5 ·
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5
What Is the Distance Between the Slits in Young's Double Slit Experiment?
  • idkgirl
  • · Replies 3 ·
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3
Net electrical flux on a cylindrical Gaussian Surface
  • Broem
  • · Replies 2 ·
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2
The Terms Potential & Potential Difference
  • Chase25
  • · Replies 3 ·
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3
Calculating path length difference - help
  • Enthusiast94
  • · Replies 13 ·
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13
Question on Simple Harmonic Motion.
  • Wesc
  • · Replies 2 ·
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2
Projectile Motion distance problem
  • aaronfue
  • · Replies 9 ·
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9
Calculate evenly distributed force on a beam
  • dreamliner
  • · Replies 1 ·
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1
Balloon Thermo/buoyancy question
  • efekwulsemmay
  • · Replies 3 ·
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3
Question on aperture and magnitude.
  • garyd
  • · Replies 4 ·
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4
Stuntwoman Helicopter Drop: Projectile Motion Homework Solution
  • Toranc3
  • · Replies 9 ·
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9
Find electric field strength between disks
  • johnnyboy53
  • · Replies 4 ·
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4
Calculating Time for Electron to Slow Down in Electric Field
  • Colts
  • · Replies 5 ·
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5
Equilibrium of Forces: Finding Magnitude and Direction of Unknown Force P
  • FaraDazed
  • · Replies 12 ·
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12
Find Initial Velocity from Angle and Horizontal Distance
  • IcyDuck
  • · Replies 1 ·
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1
Conservation of Angular Momentum bicycle problem
  • pogo2065
  • · Replies 9 ·
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9
How Fast Must a Passenger Train Decelerate to Avoid a Crash?
  • Woolyabyss
  • · Replies 3 ·
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3
How Should Angles Be Used in Calculating Tension Forces?
  • cbchapm2
  • · Replies 3 ·
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3
Another tension force question
  • cbchapm2
  • · Replies 10 ·
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10
Finding Wind Velocity for a Westward-Bound Airplane
  • Toranc3
  • · Replies 8 ·
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8
Calculating Energy and Momentum in Different Frames
  • PirateFan308
  • · Replies 2 ·
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2
Electric field at the semi-circle's center
  • Colts
  • · Replies 3 ·
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3
Electrostatics and Coulumb's law, potentials and test charges
  • Plasmosis1
  • · Replies 1 ·
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1
Comparing the Frequencies of the Moon and Earth's Revolution: Which is Greater?
  • Meowserkitty
  • · Replies 1 ·
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1
How Does Changing Plate Distance Affect Interference Patterns in Interferometry?
  • binbagsss
  • · Replies 1 ·
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1
How does water rise to form clouds if oxygen is heavier than nitrogen?
  • channel1
  • · Replies 4 ·
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4
Velocity of cart after seperation
  • jimmyly
  • · Replies 2 ·
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2
Thermodynamics (final temperature, ice mixed with steam)
  • SigFig
  • · Replies 3 ·
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3
Momentum on an Inclined Plane: Understanding Conservation and Directionality
  • bd2015
  • · Replies 2 ·
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2
Eliminate T to Show SHM of a Rectangular Plate
  • Avi1995
  • · Replies 7 ·
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7
Solid State Physics | electrons | thermal conduction
  • heycoa
  • · Replies 3 ·
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3
How do you find the electric potential from force?
  • Mitocarta
  • · Replies 3 ·
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3
Determining Beam Diameter in Glass Using Index of Refraction
  • heycoa
  • · Replies 12 ·
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12
Electrostatic potential at a point outside a sphere
  • adam199
  • · Replies 1 ·
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1
Diodes in parallel with resistors and terminal PD
  • mrcotton
  • · Replies 5 ·
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5
Interferometer and Interference.
  • binbagsss
  • · Replies 7 ·
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7
Calculating Free-Fall Acceleration on a Strange Planet: Easy Problem 2 Answers"
  • iRaid
  • · Replies 6 ·
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6
Electromagnetic wave equation not invariant under galilean trans.
  • bfusco
  • · Replies 3 ·
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3
When is Electric Potential equal to 0?
  • dwk17
  • · Replies 3 ·
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3
Probability of finding a particle in a box
  • ahhppull
  • · Replies 2 ·
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2
Equation check: Dimensional analysis.
  • Beer-monster
  • · Replies 3 ·
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3
Modifying an equation to plot a straight line.
  • thatguythere
  • · Replies 7 ·
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7
Fluid flow through a pipe - Conservation of mass and/or momentum?
  • theBEAST
  • · Replies 1 ·
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1
Sliding Ramp and Freefall problem
  • Shaku
  • · Replies 54 ·
2
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54
Effusion Question about Uranium enrichening
  • CAF123
  • · Replies 4 ·
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4
How does friction work on a smooth slope with rough contacts?
  • shalikadm
  • · Replies 2 ·
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2
Prove Period of a Rocking Hemisphere of Radius R is Equal to 4R/3
  • Karol
  • · Replies 26 ·
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26
Newton's Laws and Force Problem
  • Yosty22
  • · Replies 1 ·
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1
Speeding Driver & Cop Car Velocity/Time/Acceleration Q
  • chrisweikert
  • · Replies 1 ·
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1
How Does a Perturbed Electric Dipole Exhibit Simple Harmonic Motion?
  • CAF123
  • · Replies 4 ·
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4
Finding time period and minimum length of threads
  • Saitama
  • · Replies 2 ·
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2
Is Back EMF Always Equal to Battery EMF in Inductive Circuits?
  • harsh95
  • · Replies 3 ·
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3
Finding Electric Field from Long Filament
  • Bashyboy
  • · Replies 5 ·
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5
Calculating Tension in Multiple String Systems
  • kaffekjele
  • · Replies 6 ·
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6
Finding Force of an electron in motion
  • mrye33
  • · Replies 1 ·
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1
Determining Total Impedance: Q&A
  • freshbox
  • · Replies 9 ·
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9
Finding Impedance of RC Series Circuit - Value of R & C
  • freshbox
  • · Replies 10 ·
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10
What is the induced emf in one of the windings?
  • lizaliiu
  • · Replies 3 ·
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3
Charge on two suspended metal balls
  • crowdedscience
  • · Replies 5 ·
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5
How do I calculate watts for household appliances?
  • njuice8
  • · Replies 3 ·
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3
Entropy and Black Hole Temperature
  • erok81
  • · Replies 1 ·
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1
Complex circuits with Kirchoff's law
  • serverxeon
  • · Replies 1 ·
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1
Two negatively charged balloons on strings. Find tensions?
  • cvang24
  • · Replies 1 ·
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1
What Voltage Accelerates an Electron Over 0.350 m in 46.0 ns?
  • Shinster007
  • · Replies 20 ·
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20
Compton Effect Conceptual Problem
  • Opus_723
  • · Replies 3 ·
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3
Momentum in special relativity problem
  • sapz
  • · Replies 3 ·
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3
Equations of Motion Homework: Acceleration of Block A
  • aaronfue
  • · Replies 1 ·
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1
Matrix operations in a general physics problem
  • AmTran_Bus
  • · Replies 1 ·
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1
Frequency of circuit with purely real impedance
  • leroyjenkens
  • · Replies 14 ·
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14
Electric field of ring causing oscillation
  • ponyhunter
  • · Replies 1 ·
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1
Stiffness of a single interatomic spring PLEASE HELP
  • luckyg14
  • · Replies 8 ·
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8
Young's Modulus and Interatomic Bond Length PLEASE HELP
  • luckyg14
  • · Replies 19 ·
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19
Gravitational Potential Energy Problem
  • marc_2094
  • · Replies 3 ·
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3
Question about torque by gravity
  • cmkc109
  • · Replies 18 ·
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18
Projectile Motion Analysis: Time in Air Calculation
  • Blox_Nitrates
  • · Replies 38 ·
2
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38
Basic Special Relativity (Time Dilation)
  • bmb2009
  • · Replies 7 ·
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7
Calculating v from v0, frictional coefficients, and angle
  • rockchalk1312
  • · Replies 3 ·
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3
Block Colliding with a Spring - Help Appreciated
  • Nfinley1
  • · Replies 2 ·
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2
What Is the Speed of the Ball When Kicked Back in This Soccer Scenario?
  • OUstudent
  • · Replies 2 ·
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2
Physics Lab Question - High School
  • PlanetLazy
  • · Replies 4 ·
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4
Problem pertaining to relative velocity and vector components
  • Puppetstring
  • · Replies 1 ·
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1
Pressure measurement in U tube with mercury and water
  • sluo
  • · Replies 3 ·
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3
Calculating frictional force on a block with different upward forces
  • rockchalk1312
  • · Replies 2 ·
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2
Conservation of energy minimum speed
  • firezap
  • · Replies 3 ·
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3