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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Car-truck collision and gravitational force problems
- kirsten_2009
- · Replies 17 ·
How to Solve for Coefficient of Kinetic Friction: Practice Test Question
- Axbrown
- · Replies 4 ·
How is Impulse Calculated in a Collision with Changing Velocities?
- Aprizal
- · Replies 5 ·
How Much Water Vapor Is Needed to Heat a Pot from 30C to 60C?
- AlexPilk
- · Replies 4 ·
Spring Compression at kinetic energy = 0
- Abid Rizvi
- · Replies 7 ·
How Long Until the Fox Catches the Mouse?
- Kimboslice
- · Replies 1 ·
Velocity of mailbag hitting ground after helicopter release
- TanakaTarou
- · Replies 5 ·
Newton's force and circular acceleration
- homo-sapiens
- · Replies 5 ·
Angular momentum of projectile.
- Satvik Pandey
- · Replies 2 ·
Parabolic motion problem: bomber plane case
- thegreengineer
- · Replies 3 ·
Why can a bird survive on a high voltage power line without getting fried?
- Hereformore
- · Replies 6 ·
Zero Electric Flux Through a Closed Surface
- student14
- · Replies 6 ·
Calculating Magnetic Force: Equations for Moving Charges at Right Angles
- camel-man
- · Replies 2 ·
Two capacitors charged in parallel then reconnected with opposite polarity
- Casey A.
- · Replies 5 ·
Electric Potential Energy concepts
- wannabee_engi
- · Replies 5 ·
Newton’s law of motion for rotation clarification
- Luchekv
- · Replies 3 ·
Solving Mechanics Problem: Angle, Speed, Centripetal Acceleration & More
- Torunn
- · Replies 12 ·
Thermal Elongation of 2 different rods
- Karol
- · Replies 2 ·
How do I linearize a square root graph?
- Varad
- · Replies 3 ·
Quadratic and linear drag problem
- Ascendant78
- · Replies 1 ·
String with mass pulling block up frictionless ramp
- PsychonautQQ
- · Replies 2 ·
Galilean transformations - What am I messing up here?
- Achmed
- · Replies 8 ·
How Is Gravitational Acceleration Expressed Using Distance and Time Intervals?
- monkeylord714
- · Replies 4 ·
Projectile Motion with initial velocity
- Yashbhatt
- · Replies 26 ·
Wrench falling past 2 metre window in 0.6 seconds
- Hurr1cane
- · Replies 8 ·
Flatbed truck going round a circular road on an incline
- whdahl
- · Replies 6 ·
How Does Hole Diameter Affect Angular Speed in Water Vortices?
- gianamar
- · Replies 5 ·
Calculating power of one of two resistors
- carpelumen
- · Replies 1 ·
"best" value for volume of a box
- PhysicsMan999
- · Replies 3 ·
Projectile Motion, only given horizontal distance
- PhysicsMan999
- · Replies 5 ·
Velocity of Baseball at 47 m Height
- bradsmith
- · Replies 4 ·
What is the Best Way to Approach a Basic Dynamics Problem?
- amondellio
- · Replies 21 ·
Forces on Identical Bricks: Ranking Magnitudes
- ohphysics
- · Replies 3 ·
Adding resistors in parallel - Current Change through resistors
- Hereformore
- · Replies 5 ·
Problem resolving forces into components
- yugeci
- · Replies 4 ·
Packing fraction of spheres in a HCC structure
- CAF123
- · Replies 8 ·
Physics car problem kinematics
- benEE2018
- · Replies 4 ·
Ball and Ramp: Solving for Time and Evaluating Position
- atomB
- · Replies 2 ·
What Does P Represent in Intensity = P/Area?
- Maddie1609
- · Replies 2 ·
Why voltage divider rule applies separately to each parallel branch
- orangeincup
- · Replies 2 ·
Ball thrown down vs up from 19.6 m balcony
- Chasezap
- · Replies 3 ·
Fleming's right hand rule: does it give electron flow or conventional current?
- karpmage
- · Replies 9 ·
Can Connecting Positive Plate of C1 to Negative Plate of C2 Cause an Explosion?
- ABC2233
- · Replies 10 ·
Potential due to two oppositely charged half spherical shells
- oddjobmj
- · Replies 14 ·
Mr. Hammer's Epic Battle with Two Ninjas
- Chasezap
- · Replies 3 ·
A ball is thrown vertically upward.
- Chasezap
- · Replies 2 ·
The moment about a point on a post
- Feodalherren
- · Replies 6 ·
Calculating Magnetic Field Due to Multiple Cavities Using Ampere's Law
- luiseduardo
- · Replies 1 ·
How Does Calculus Explain the Changes in Notation in Rocket Equation Derivation?
- Jimmy87
- · Replies 1 ·
Electric field along a finite rod
- mintsnapple
- · Replies 9 ·
Forces and Inclined plane (ramp)
- homo-sapiens
- · Replies 9 ·
Mass on a Swing Ride: Physics of Thrill Rides
- Heyhay
- · Replies 2 ·
How Do You Calculate the Minimum Speed of a Baseball for a Home Run in Physics?
- Ritzycat
- · Replies 7 ·
What are the air speeds in a Venturi meter with varying tube diameters?
- happysmiles36
- · Replies 2 ·
How to Add Acceleration Vector in Uniform Circular Motion
- Impulse
- · Replies 14 ·
Total force on surface of a plate?
- eterna
- · Replies 3 ·
Resolving vectors into a unit vector
- jmc
- · Replies 1 ·
Thermal elongation-ring on a shaft
- Karol
- · Replies 7 ·
How to Identify the Phase of Steam Using a Thermodynamics Table?
- dhkdeoen
- · Replies 1 ·
A problem about Calorie and Joule transformation
- Quarlep
- · Replies 8 ·
Why does reducing wavelength restore fringes when slit separation increases?
- desmond iking
- · Replies 1 ·
Caption: Understanding Lensing Mass and Velocity in Particle Astrophysics
- FatPhysicsBoy
- · Replies 2 ·
Model rocket with 5m/s² acceleration for 10 seconds
- HTT
- · Replies 6 ·
Finding the Ratio of Dimensions for Equal Hydrostatic Force on a Vertical Plate
- dhkdeoen
- · Replies 5 ·
Special Relativity - Events and Frames of Reference
- Pezz
- · Replies 6 ·
Two spring scales holding a hanging mass, what're the readings on both scales?
- gibbons530
- · Replies 3 ·
Simultaneity and Spatial Separation
- fdsa1234
- · Replies 18 ·
Velocity (Magnitude and Direction) of a tossed object as it hits something
- jg871
- · Replies 3 ·
Rolling Ball and Proportionality Between Distance and Time
- rakeru
- · Replies 4 ·
Find direction from three displacement vectors?
- amhasque
- · Replies 1 ·
Light clock - Galilean transformations
- Achmed
- · Replies 1 ·
Motion in a straight line and a cyclist
- Mary1910
- · Replies 3 ·
Finding the equation to linearize experimental data
- Varad
- · Replies 2 ·
How can you use Snell's law to find the image formed by a thick lens?
- darksyesider
- · Replies 9 ·
Force on an object placed on an incline
- reigner617
- · Replies 11 ·
How much farther does a car skid on wet vs dry concrete?
- Wapapow10
- · Replies 6 ·
Two electric field problems - pick one or both
- absolutezer0es
- · Replies 3 ·
Pressure for Frozen Water: Solving 6.6*10^(8) N/m^2
- fightboy
- · Replies 1 ·
Convert sunlight to electricity in a given area
- Revicted
- · Replies 4 ·
Simple Pendulum Damping: Finding Amplitude and Energy Loss Rate
- toothpaste666
- · Replies 24 ·
Interpreting a motion diagram for a kinematics problem
- Zandabyte
- · Replies 1 ·
How Is Kinetic Energy Calculated for a Raindrop Falling at Steady Speed?
- SUALEH MUSLIM
- · Replies 4 ·
Mass attached to vertical spring
- sualeh
- · Replies 1 ·
Plot Range R vs Angle Theta (0-90)
- sally.smith4321
- · Replies 11 ·
Airplane flying west with wind from south
- gallathus
- · Replies 9 ·
Solving for Equilibrium Forces on a 5kg Ball
- Bhupendra
- · Replies 7 ·
Gauss's law to solve for electric field.
- playoff
- · Replies 8 ·
How can I solve for average velocities using derivatives and integrals?
- StrandedStudent
- · Replies 5 ·
Flux above a flat horizontal surface
- sea95
- · Replies 1 ·
What in the name of inclined planes?
- GrimesA
- · Replies 15 ·
How do I calculate the torque needed to turn a one tonne box 360 degrees?
- Jimmy4455
- · Replies 2 ·
What is the correct way to calculate the doppler effect in this scenario?
- slaw155
- · Replies 1 ·
Velocity of boat after two people have jumped off
- QuanH
- · Replies 9 ·
What is the correct frequency of the reflected ultrasound received by the bat?
- slaw155
- · Replies 1 ·
How Do You Solve These Advanced Optics Problems?
- slaw155
- · Replies 3 ·
Sound intensities in hearing aids
- slaw155
- · Replies 2 ·
Calculating Current in a Cylindrical Region
- Aviegaille
- · Replies 3 ·
Calculating Object-Lens Distance for Diverging Lens Optics
- slaw155
- · Replies 2 ·
Solving Sun Intensity Problem: 685W/m^2 in 6.5 Days
- slaw155
- · Replies 2 ·
Resolving Vector Along Non-Standard Axes
- srg
- · Replies 3 ·