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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What is the Speed of Sound in Air?
- oceanflavored22
- · Replies 10 ·
Acceleration and Force question - Thanks
- nukeman
- · Replies 16 ·
Frictional force on 9 kg block on 30° incline
- trivk96
- · Replies 1 ·
Acceleration due to gravity question
- srikar97
- · Replies 2 ·
Find the force exerted on a bullet as it travels through the barrel
- trivk96
- · Replies 1 ·
Got a doosie here, Angular acceleration, time and radius.
- GRice40
- · Replies 3 ·
Two blocks tied with massless rope sliding down an incline
- sheeproars
- · Replies 2 ·
Calculate the pull on the high bar of a gymnast
- bionut
- · Replies 1 ·
What is the formula for finding centripital acceleration in a spinning disc?
- ttttrigg3r
- · Replies 1 ·
Calculating Coefficient of Friction in a Hockey Puck Sliding Problem
- Peter Tran
- · Replies 1 ·
Friction on inclined plane with force along unconventional x-axis
- 1MileCrash
- · Replies 24 ·
Finding total time of a running rabbit
- shahin93
- · Replies 2 ·
Find the coefficient of Friction with weight and force needed to move and object
- trivk96
- · Replies 4 ·
Impulse and Momentum, 2 dimension
- buttretler
- · Replies 1 ·
What is the Initial Speed of a Baseball Thrown at a 45° Angle?
- Ki-nana18
- · Replies 8 ·
Kinetic Energy of Two Atoms System: r=r1
- xhhux
- · Replies 1 ·
How Do You Calculate Radius in Uniform Circular Motion?
- george256
- · Replies 6 ·
Finding the angle of the traveling direction of a sailboat
- TmrK
- · Replies 4 ·
Finding the direction of the resultant
- imsochrisp
- · Replies 5 ·
Trip to Moon: Escape Earth's Gravity!
- aszymans
- · Replies 1 ·
Solving a Particle's Motion with Acceleration a(t) = 3at + 2b
- MelissaJL
- · Replies 1 ·
What equations would I use to solve for work and power delivered?
- george256
- · Replies 13 ·
Finding Maximum Height of Two Simultaneously Launched Balls
- EHogeberg
- · Replies 13 ·
Relating position and force to speed
- Capncanada
- · Replies 25 ·
Find the acceleration of an elevator
- patrilu5
- · Replies 7 ·
Solving a proof on an exam and looking for possible resources to bring to it
- pantrwrstl
- · Replies 2 ·
2 charges located in the x-y plane
- Londonfish
- · Replies 2 ·
Egg drop from 25 meters with latex glove, newspaper, and toothpicks
- Amandalynn
- · Replies 1 ·
Time it takes to lift a sofa with power
- Capncanada
- · Replies 9 ·
Propagation of errors addition numbers without uncertainty
- Silvestor
- · Replies 2 ·
Newtons Law Problem involving kinematic equation
- lolcheelol
- · Replies 6 ·
What is the Electric Field of a Charged Cylinder with Varying Density?
- wolski888
- · Replies 13 ·
Remove a force, what would be the resultant
- ammoun
- · Replies 3 ·
Power involved in running upstairs
- Capncanada
- · Replies 9 ·
How Far Can a Person Sit on a Table Without Tipping It Over?
- ssnapier
- · Replies 3 ·
Projectile Motion Launched at an Angle
- phizics09
- · Replies 4 ·
Friction coefficient is greater than 1 explanation
- ttttrigg3r
- · Replies 4 ·
Eliminating x in Lorentz Transformation
- ZedCar
- · Replies 2 ·
Projectile launched from 65 m building at 32°
- student54321
- · Replies 11 ·
Gauss's Law and charged conductors
- veevee
- · Replies 2 ·
Net force on a 5 kg block when it starts to slide with static friction 0.40
- paxian
- · Replies 5 ·
Finding electric field via potential
- DannyPhysika
- · Replies 1 ·
Is log4(18) an Irrational Number?
- CPatCU
- · Replies 1 ·
Potential difference between 2 points on dipole axis
- demonelite123
- · Replies 2 ·
Calculating work when 2 forces are present
- jono240
- · Replies 6 ·
Solve for Escape Velocity on Mars: Differential Equation Method
- verticos
- · Replies 1 ·
Can any one explain me about Integrals and derivatives in breif
- srikar97
- · Replies 4 ·
Problems with frictionless wedges
- zaurefirem
- · Replies 3 ·
Forces: Wedge and Block Problem + Pulley System Problem
- akemi3
- · Replies 1 ·
An erect pencil on a frictionless plane
- zheng89120
- · Replies 1 ·
Is the Tension in the String Equal for Both Blocks?
- theunloved
- · Replies 4 ·
Photoelectric effect calculations
- NewtonianAlch
- · Replies 7 ·
Force exerted on motorcycle and rider
- ankurb
- · Replies 4 ·
Finding resources on stiffness matrix calculations
- david666
- · Replies 2 ·
Bomb launched from aircraft at 55 degrees: projectile motion
- megustaramen
- · Replies 1 ·
Integral Formulas for Center of Mass of Uniform Density
- 1MileCrash
- · Replies 1 ·
Atwood Machine on a Frictionless Inclined Plane: Components Resolution
- logearav
- · Replies 4 ·
Equipotential contours: which statements about charge and potential are correct?
- badd99
- · Replies 8 ·
2d Motion, calculating time when v=0 from position vector
- bearandmoose
- · Replies 1 ·
Initial Velocity of a Projectile
- AngeliaGW
- · Replies 2 ·
Finding initial velocity given displacement, time, and final velocity
- dudelol
- · Replies 1 ·
Finding the magnitude of acceleration
- Include
- · Replies 2 ·
How to find the wavelength of a sound wave?
- strayaway
- · Replies 1 ·
Kirchoff's Laws Problem - Power
- KRC
- · Replies 1 ·
Does field strength propagate or emerge from local interactions?
- ThinkerofWhat
- · Replies 2 ·
Resistance of a truncated cone with varying cross section
- iiiiaann
- · Replies 6 ·
Atwood machine with leaking container changing acceleration
- theunloved
- · Replies 6 ·
Why is electric potential nonzero inside a charged conductor if the field is zero?
- channel1
- · Replies 6 ·
Head-on elastic collision of alpha particle with gold nucleus
- skyze
- · Replies 1 ·
5 Parallel Large Flat Electrodes (Potential/E-Field)
- jegues
- · Replies 4 ·
Center of Mass Diagram Don't quite understand
- 1MileCrash
- · Replies 5 ·
How Do You Calculate the Tension in a String of a Suspended Charged Cork Ball?
- javacola
- · Replies 2 ·
How Do You Calculate the Combined Phase Angle Shift of Multiple Waves?
- armolinasf
- · Replies 1 ·
Which Object Has the Greater Instantaneous Velocity?
- xPiiNK
- · Replies 3 ·
How to solve how much work is done:
- witteliz
- · Replies 1 ·
Problems Involving Two Interacting Bodies and Friction
- prosteve037
- · Replies 1 ·
Mass attached to a spring rotating in a circle
- jono240
- · Replies 1 ·
Why does the left-hand rule work when Earth's field has a vertical component?
- jsmith613
- · Replies 2 ·
Pendulum Motion Equation and Period Calculation
- Icetray
- · Replies 5 ·
What Is a Matter Wave?
- J-Girl
- · Replies 1 ·
Load Distribution/Rigid Body Equilibirum Problems
- jhchex
- · Replies 1 ·
Forces on a pail being lowered/pulled up, with/without water
- Phys121VIU
- · Replies 5 ·
How Long Does It Take for a Capacitor to Reach 80% Charge in an RC Circuit?
- blackbyron
- · Replies 4 ·
Calculating Acceleration Due to Gravity Using Velocity, Time, and Position Data
- ejohnston
- · Replies 12 ·
How much force is needed to move the crate?
- axlg38
- · Replies 9 ·
Solving for Force & Fly-Off Time on Rotating Mass in Cup
- thoughtclaw
- · Replies 2 ·
What is the Net Force on a System with Multiple Objects and Inclined Planes?
- Nemean
- · Replies 24 ·
How do I solve for 't' in the platinum wire resistance problem?
- ibysaiyan
- · Replies 1 ·
Forces and state of equilibrium
- sdoi
- · Replies 7 ·
Calculating emf from angular velocity
- Masafi
- · Replies 4 ·
Cannonball fired at 30° from 40 m height striking ground at 1.2v₀
- sweet_girl123
- · Replies 3 ·
Bead sliding on a rotating straight rigid wire.
- Aerostd
- · Replies 2 ·
How Does Time Dilation Affect Clocks on the Concorde?
- mindarson
- · Replies 1 ·
Center of mass question (man on a boat)
- ddtozone
- · Replies 2 ·
Calculate the uncertainty on the values of m
- blueyellow
- · Replies 1 ·
Is There Any Net Force Acting on an Athlete Moving at Constant Velocity?
- bionut
- · Replies 3 ·
Finding acceleration of 7 kg block hanging from 11 kg block on table
- trivk96
- · Replies 7 ·
Thermodynamics - Entropy and Temperature
- lifeonfire
- · Replies 1 ·
Numerical approach to the spring force of a bowstring (Not Hooke's Law)
- Verdict
- · Replies 1 ·