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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Finding initial velocity of a projectile. Help with force and acceleration
- Sony95
- · Replies 15 ·
Why am I getting 1.23s instead of 1.18s for a ball thrown 20° below horizontal?
- MattPalmer
- · Replies 6 ·
Constant acceleration muon problem
- vysero
- · Replies 7 ·
Finding stretch in wires with different lengths and diameters using Young's modulus
- Nellen2222
- · Replies 1 ·
How to tell which function has distance proportional to time?
- gurpalc
- · Replies 4 ·
How Does Maximum Range Affect Projectile Separation at Equal Heights?
- ozone
- · Replies 3 ·
Calculating Moment About Axis AC for a Given Force Vector
- Colts
- · Replies 2 ·
How Do You Calculate the Work Done to Reach Maximum Height on a Planet?
- 000
- · Replies 10 ·
Force on charge q2 from q1 using Coulomb's law
- name of user
- · Replies 2 ·
Having trouble with some simple physic questions.
- Mr. Fish
- · Replies 14 ·
How to Calculate the Electric Field Between Two Conducting Infinite Plates?
- 1MileCrash
- · Replies 2 ·
How Do You Calculate the Power Output of a Motor on an Inclined Ramp?
- DoJang
- · Replies 5 ·
Solve 1D Motion Questions: Determine Velocity, Max Height, Time Req.
- oreosama
- · Replies 2 ·
Nellie Newton hangs at rest from the ends of the rope as shown.
- pbody
- · Replies 5 ·
Harry the painter swings year after year from his bosuns chair.
- pbody
- · Replies 1 ·
Force Couple System and resultant force
- Northbysouth
- · Replies 7 ·
How Is Percentage Uncertainty Calculated in Power Dissipation?
- moimoi24
- · Replies 3 ·
Which Ship Gets Hit First by the Destroyer's Shells?
- maiad
- · Replies 4 ·
Calculate Cliff Height: Free-Fall Problem with Rock Dropped from a Cliff
- iMAGICIALoTV
- · Replies 5 ·
Current Ionic Solution, Charges
- PeachBanana
- · Replies 6 ·
Derive v = 2 l_nf_n for the nth harmonic
- Northbysouth
- · Replies 1 ·
What is the Voltage and Power in a Circuit with Current Sources?
- Mosaness
- · Replies 4 ·
Power Source = I3 x 12 VPower Source = 7.38 W
- Mosaness
- · Replies 2 ·
How to Choose Resistors for Desired Currents in a Circuit
- Mosaness
- · Replies 4 ·
Optimal Slope Angle for Hilltop House Stability
- majormaaz
- · Replies 1 ·
How Do You Solve Basic Kinematics Problems in Physics?
- asheik234
- · Replies 5 ·
Object hung from two ropes - determine weight
- bcalkins
- · Replies 3 ·
Projectile Motion Problem: Finding Minimum Jumping Speed of a Salmon
- narutoish
- · Replies 2 ·
Why are avg. v and instant. v different?
- mzladyx
- · Replies 6 ·
Kinematics problem, don't know how to find unknown variables
- Physicsnoob10
- · Replies 3 ·
Fluids, flow velocity and flow rate.
- Sum'Random
- · Replies 2 ·
Center of mass of fluid in rotating cylinder
- homedoc
- · Replies 1 ·
What Is the Voltage at Vout With Respect to Ground?
- RIPCLB
- · Replies 5 ·
Solve 1D Motion: Find Distance, Time, Velocity
- oreosama
- · Replies 3 ·
Evaluate a Particle's Position at Given Times
- AryRezvani
- · Replies 4 ·
First law of thermodynamics with multiple paths (Eint = Q - W)
- zag4life
- · Replies 3 ·
Can Raj Catch the Accelerating Bus?
- 33639
- · Replies 5 ·
Average acceleration problem having trouble
- robbie8292
- · Replies 1 ·
Calculate Force Applied by Tree to Stop 4.5kg Axe at 25 m/s
- physics604
- · Replies 1 ·
Football Pattern Vectors Question
- vane12
- · Replies 3 ·
Find the rms speed of a dust particle.
- nlingraham
- · Replies 2 ·
Will Karan hit the skunk with 90 km/h reaction and braking?
- 7282
- · Replies 2 ·
Heat lost from face due to black body radiation
- nlingraham
- · Replies 3 ·
Basic Kinematics Questions, first year physics
- asheik234
- · Replies 15 ·
Modern Physics (S. Theory of relativity) problem
- majormuss
- · Replies 1 ·
Find initial temp. of alcohol when copper and aluminum are added
- nlingraham
- · Replies 3 ·
Solving for Tension and Force in a Pulley System
- kxk010
- · Replies 8 ·
Finding the Electric Field Between Charges [picture]
- PeachBanana
- · Replies 3 ·
Acceleration vs. time for roller coaster cart with and without gravity
- Genxi
- · Replies 1 ·
How Is Tension Calculated Using Vector Mathematics?
- ParoXsitiC
- · Replies 5 ·
Moment of inertia of a few basic objects
- Draco27
- · Replies 26 ·
Forces on car and occupants in collision with and without crumple zone
- 187 god
- · Replies 2 ·
Calculating Work Done on a Box Moving Up a Ramp
- moimoi24
- · Replies 17 ·
Finding acceleration relationships in a 3-mass pulley system
- jkw
- · Replies 3 ·
Force exerted to a falling object
- Perdition
- · Replies 5 ·
Rock thrown off cliff with sound travel time included
- 33639
- · Replies 2 ·
How to find net displacement from two vector legs
- link107
- · Replies 6 ·
How High Was the Object Dropped in This Free Fall Problem?
- piknless
- · Replies 3 ·
I give up Basketball Projectile problem.
- kieth89
- · Replies 4 ·
Chinook Salmon Swimming Pattern
- DatAshe
- · Replies 1 ·
Easy question, cant get the right result but have all fomulars
- mimi.janson
- · Replies 6 ·
Finding average speed and velocity from velocity-time graphs
- rayj098
- · Replies 11 ·
Why does 2|A×B| equal |A×B - B×A|?
- Mosaness
- · Replies 5 ·
Phase difference and spatial separation for a 75 cm wavelength wave
- kgal
- · Replies 1 ·
How Does Object Placement Affect Image Location in Convergent Lenses?
- jaumzaum
- · Replies 1 ·
How Do You Calculate Velocity from a Position Function in Physics?
- vysero
- · Replies 11 ·
Combustion potato gun - Need associated variables, ideas and concepts.
- SydDF
- · Replies 2 ·
Determining wind velocity vector.
- Jonathan Teas
- · Replies 1 ·
Electric Field, Excess Charge Conceptual Question
- PeachBanana
- · Replies 2 ·
Basic special relativity addition of velocities problem
- Aziza
- · Replies 4 ·
In tearing a paper towel or plastic bag
- pbody
- · Replies 3 ·
Finding θ That Balances the Electrical Forces
- Legaldose
- · Replies 7 ·
Transforming kinetic energy into thermal energy
- nlingraham
- · Replies 2 ·
Center of mass of right triangle
- mariexotoni
- · Replies 5 ·
FInd the height where two object pass each other.
- iMAGICIALoTV
- · Replies 4 ·
The work done in accelerating a ball to a certain speed
- Kwcty6888
- · Replies 4 ·
Why don't the two approaches give the same image distance in this water-mirror system?
- jaumzaum
- · Replies 6 ·
Two blocks connected by spring released from rest on frictionless surface
- fmilner
- · Replies 7 ·
How do i find the final velocity with 2 height variables and gravity
- deathslice246
- · Replies 4 ·
Will a Car Speed Up After Releasing the Brakes?
- pbody
- · Replies 1 ·
Calculating friction in Parallel?
- davidc95
- · Replies 1 ·
Resolving vector components using trigonometry
- NewtonIsaac
- · Replies 7 ·
Scientific Notation and Unit Conversions
- AbsoluteZer0
- · Replies 4 ·
Making X the subject. Know nothing
- Dainielw
- · Replies 9 ·
Calculating Velocity and Distance with Simple Projections
- phospho
- · Replies 5 ·
Equation of motion for a spring-mass system with free undamped vibration
- jason.bourne
- · Replies 7 ·
Questions pertaining to constant velocity + acceleration and relative motion
- Xelb
- · Replies 1 ·
Is Energy Conserved in a Falling Yo-Yo?
- estro
- · Replies 4 ·
Calculating Water Depth Using Sound Waves
- Douna2nd
- · Replies 1 ·
Finding angular velocity from a fraction equation
- Icetray
- · Replies 1 ·
Newton law, An object hanged with a robe that has a weight.
- chawki
- · Replies 6 ·
How Much Is the Friction Acting on a Crate Sliding at Constant Velocity?
- pbody
- · Replies 2 ·
Finding ball height at a distance for soccer goal program
- lorenzosounds
- · Replies 3 ·
Uniform Electric Field and Finding Electric Potential
- PeachBanana
- · Replies 5 ·
Finding the components of an electric field.
- bfusco
- · Replies 3 ·
Is there a relationship between gear RPM and number of teeth?
- Icetray
- · Replies 12 ·
Electric Field at the Center of a Square with Four Charges
- charmedbeauty
- · Replies 4 ·
Are There Connections Between Number Theory and Physics?
- godel
- · Replies 1 ·
What Is the Shear Modulus of Dry Spaghetti?
- jackscholar
- · Replies 1 ·