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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Longitudinal Waves - are they very different?
- Stealth849
- · Replies 1 ·
How to find the electric field coming from a sphere WITHOUT using Gauss' law?
- anban
- · Replies 3 ·
How to find tension using integration
- PhizKid
- · Replies 11 ·
Two Stage Rocket: Max Height Above Launch Pad
- Toranc3
- · Replies 3 ·
How much power is needed to steer tires?
- qpham26
- · Replies 9 ·
Finding friction force when pulling a crate at an angle
- tyler hartman
- · Replies 8 ·
What is the Wave Equation for a String?
- Stealth849
- · Replies 10 ·
R through a wire: What's the max error in diameter if your R has 1% uncertainty?
- anban
- · Replies 4 ·
Use Planck’s radiation law to derive the Stefan-Boltzmann
- modphysnoob
- · Replies 1 ·
Find period of astronaut when Normal force of ship = normal force on earth
- kariibex
- · Replies 1 ·
Dimensional analysis for equation of state constants a and b
- talebone
- · Replies 4 ·
Mass, Weight and the local acceleration due to gravity
- Northbysouth
- · Replies 1 ·
How Far is Charge Q1 from Point P Where the Electric Field is Zero?
- AyooNisto
- · Replies 1 ·
What is the speed of the string? (wave problem)
- bored2death97
- · Replies 2 ·
How Do You Calculate the Mass of a Steel I-Beam?
- mynameiscool
- · Replies 3 ·
Calculating Kinetic and Potential Energy of a Falling Object
- Coco12
- · Replies 9 ·
Why does Rutherford's formula fail for small-angle alpha particle scattering?
- rbwang1225
- · Replies 4 ·
Net force from three forces at different angles
- dragon18
- · Replies 1 ·
Tension in Fixed Pulleys: Understanding Forces and Equilibrium
- Bipolarity
- · Replies 1 ·
What Was the Initial Velocity of the Bullet in the Momentum Problem?
- robertmatthew
- · Replies 16 ·
Attraction of a steel rod with a solenoid
- sgstudent
- · Replies 7 ·
Find Io in the network nodal analysis
- Color_of_Cyan
- · Replies 6 ·
Special Relativity, calculating velocity of Kl0 meson with reference frames
- PhysicsProblem
- · Replies 4 ·
How Do You Calculate Time in a Charging Capacitor Equation?
- MidlandSoul
- · Replies 4 ·
Finding the resultant of two forces at 60° angle
- DanB1993
- · Replies 7 ·
What Is the Velocity and Net Force After Two Football Players Collide?
- quicksilver123
- · Replies 6 ·
Three blocks Newtons law help have I got my answers and sign correct ?
- aruji73
- · Replies 6 ·
Two trains on same track: which collision time is correct?
- Toranc3
- · Replies 4 ·
Find distance x for pole equilibrium with hanging object and wall friction
- has1993
- · Replies 14 ·
Vector addition word problem question
- personguything
- · Replies 8 ·
Velocity of a steel ball bearing due to magnetic force
- jonc1258
- · Replies 4 ·
Electron/Positron Annihilation
- Von Neumann
- · Replies 4 ·
How Do You Calculate Angular Motion for a Child on a Merry-Go-Round?
- LizAnn10
- · Replies 3 ·
Determining the time of a collision
- robertmatthew
- · Replies 3 ·
What will be the acceleration of an electron when it is at the origin?
- AxM=Fam
- · Replies 3 ·
Circular motion x, y acceleration
- aruji73
- · Replies 5 ·
What Is the Least Time for Blocks to Move 7.20m Without Sliding?
- Nbwx
- · Replies 4 ·
Three point charges in a line and charge redistribution by contact
- talebone
- · Replies 12 ·
Thrust separate from acceleration?
- bd2015
- · Replies 1 ·
What is your velocity when walking on a moving train in the opposite direction?
- aruji73
- · Replies 2 ·
How Do You Calculate the Speed of a Plane with Respect to the Ground?
- aruji73
- · Replies 3 ·
Constant Acceleration of a skier Problem
- bmb2009
- · Replies 4 ·
How Do Forces Affect Motion on Inclined Planes?
- Bipolarity
- · Replies 3 ·
Finding Work function and Plank constant
- modphysnoob
- · Replies 2 ·
Find the components of a unit vector
- seanster1324
- · Replies 2 ·
Charge on a point in three different locations with a thin semicircular rod
- swagadoo
- · Replies 11 ·
Acceleration and Kinetic Energy
- k0k
- · Replies 4 ·
Finding the impedance of circuits.
- RobLikesBrunc
- · Replies 5 ·
Are Identical Masses' Angles Equal for Different Charges?
- anban
- · Replies 2 ·
Locomotives on a collision track
- kopinator
- · Replies 1 ·
Thermodynamics and Mechanics questions
- nasar176
- · Replies 3 ·
Standard deviation of the mean for five ammeter measurements
- jumi
- · Replies 9 ·
Polarizing Light through Two Filters
- thiefjack
- · Replies 2 ·
Why is my calculated mass off by a factor of 100 in spring oscillation problem?
- quicksilver123
- · Replies 9 ·
Optics question, locate mirror and its focal length
- SlothNast
- · Replies 3 ·
Rate of energy release by Polonium-210
- influx
- · Replies 1 ·
Forces Acting on Mass M on Wedge
- Gloyn
- · Replies 2 ·
What is the strength of the gravitational field?
- Workout
- · Replies 5 ·
Can we calculate the Sun's mass without knowing the Earth-Sun distance?
- bionioncle
- · Replies 7 ·
Beam bending, overhang with 2 concentrated loads
- SolMech
- · Replies 5 ·
Problems with Critical Damping and Underdamping
- NewtonsHead
- · Replies 1 ·
Finding acceleration of a 120 kg fridge with applied force and friction coefficients
- emall16
- · Replies 1 ·
I have got a lab on 'Braking distance of a wooden block'?
- Bharat_prakash
- · Replies 4 ·
Q) What is the final temperature of the compressed air in degrees Celsius?
- Azareus
- · Replies 2 ·
Finding Final Temperature of Boiling Water and Potatoes
- erok81
- · Replies 5 ·
Dr Evil( Straight line motion)
- Toranc3
- · Replies 4 ·
Superhero and sidekick hanging from a rope
- cmkc109
- · Replies 3 ·
What Does the Area Under a Force vs Time Graph Represent?
- Tylemaker
- · Replies 1 ·
How long after the second ball is thrown do the two balls pass each other?
- Toranc3
- · Replies 2 ·
Confusion on wording of a dimension problem
- camillevoll
- · Replies 5 ·
What is the acceleration due to gravity?
- adrianagisela_
- · Replies 1 ·
Can Electrons Really Conduct Heat?
- quantumfoam
- · Replies 12 ·
Scaling up a test cannon to a life sized cannon
- FredGirl13
- · Replies 1 ·
How Do You Determine if a Meteoroid Has an Open Orbit?
- Workout
- · Replies 9 ·
What is the net pressure force on a pressurized jumbo jet flying at 10 km?
- Von Neumann
- · Replies 22 ·
Two line charges lie in the XY plane
- weresquid
- · Replies 3 ·
Calculating Average Speed of a Baseball in Horizontal Projectile Motion
- momoskittles
- · Replies 1 ·
Help Solve 2012 F=ma Problem 21
- ksrivatsan
- · Replies 2 ·
What does a scale read when you're free-falling?
- Clangador
- · Replies 6 ·
Calculating Car Acceleration: Kinematic Equations
- helpme2012
- · Replies 3 ·
Finding launch angle for soccer ball kicked from 260m building
- helpme2012
- · Replies 10 ·
Kinematics of Constant acceleration word problem
- pistolpete333
- · Replies 3 ·
Relativity: A bus with a vertical windshield
- itssmee
- · Replies 3 ·
Question on considering final velocity
- baird.lindsay
- · Replies 3 ·
Most probable speed of Aluminium
- rashi
- · Replies 8 ·
Solving for Acceleration when weight is in Newtons instead of Kg
- tommyboy2
- · Replies 6 ·
Circuit with two resistances and inductance
- bznm
- · Replies 4 ·
How would you solve this physics problem on relativity and the doppler effect?
- amr55533
- · Replies 2 ·
Can I reverse the PdV integral for work?
- Hercuflea
- · Replies 1 ·
Two Rotational Dynamics Problem
- morrisj753
- · Replies 1 ·
A Uniform Beam Supported by a Cable
- ginza88
- · Replies 1 ·
Sketch of an interatomic potential
- CAF123
- · Replies 8 ·
How Do You Analyze Acceleration on a Position vs. Time Graph?
- omc1
- · Replies 15 ·
Newton's second law - jumping from a height
- eternalronin
- · Replies 7 ·
How to derive the capacitance formula for two capacitors in series
- maulucci
- · Replies 9 ·
Rifle recoil velocity from a 15 g bullet fired at 220 m/s
- tommyboy2
- · Replies 2 ·
Mechanics - marble rolling in dish
- micromass
- · Replies 29 ·
Latent Heat and conservation of energy
- rico22
- · Replies 6 ·
The First Law of Thermodynamics
- rico22
- · Replies 2 ·