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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Electric potential at surface sphere problem?
- PhysicStud01
- · Replies 9 ·
Finding decibel level from intensity 1.0 × 10⁻⁵ W/m²
- RichardGib
- · Replies 4 ·
What Is the Total Charge in a Non-Uniform Spherical Charge Distribution?
- henrybrent
- · Replies 22 ·
Where Should the Slider Be Positioned on a Loaded Potentiometer?
- StokeBoy
- · Replies 6 ·
Dipole in an external electric field
- Prashasti
- · Replies 3 ·
Can't get my head around reduced mass (particle physics)
- Flucky
- · Replies 3 ·
How Does an Object's Weight Change from Earth to Moon?
- XylophoneDealer
- · Replies 6 ·
Does F = k·u × v produce circular or spiral motion?
- Anastasis Pk
- · Replies 4 ·
Finding the reaction force on a 5m mass
- bomberkid
- · Replies 7 ·
How Long Does It Take to Fall from a Cliff?
- reyrey389
- · Replies 3 ·
Lorentz Transformation - Clock
- CGM
- · Replies 8 ·
About the angle between force and displacment, W=F.d cosƟ
- Sculter
- · Replies 6 ·
How Do You Calculate Time Squared for a Falling Object?
- Kristeng94
- · Replies 20 ·
Low Water Pressure in high rise buildings
- sco_111
- · Replies 5 ·
Forces and energy in a system of a group of walkers
- Dassinia
- · Replies 1 ·
Impulse and Momentum of a rocket
- Isquarey
- · Replies 3 ·
Finding unknown charge given net electric field at origin
- timnswede
- · Replies 4 ·
Calculate Final Speed of 58kg Skier on 25° Slope w/ 70N Friction
- Flinze
- · Replies 4 ·
Question on thermal equilibrium?
- Shindo
- · Replies 5 ·
Work done pulling string on rotating mass equals kinetic energy increase
- geoffrey159
- · Replies 1 ·
Vertical energy of a pendulum - is there one?
- jojotank
- · Replies 2 ·
Finding the Center of Mass of a Suspended Scaffold and Paint Cans System
- bravoman
- · Replies 4 ·
Solid Angle Rutherford Scattering
- Purple Baron
- · Replies 2 ·
How Do You Calculate Elevator Cable Tension for Maximum Acceleration?
- yandereni
- · Replies 4 ·
Maximum upward acceleration of a 2125 kg elevator
- yandereni
- · Replies 8 ·
Determining the Acceleration (Inclined Plane Problem)
- yandereni
- · Replies 3 ·
Hydrostatic pressure on a plug in nested pipes with two fluid columns
- Tkopperl
- · Replies 10 ·
What branch or branches of physics is the following?
- saintrenz
- · Replies 5 ·
Determining the Acceleration (Two objects in contact)
- yandereni
- · Replies 1 ·
Cutoff Potential vs. Kinetic Energy in Electron Volts: What's the Difference?
- garr6120
- · Replies 5 ·
How Is Extra Energy Calculated in a Stretched Wire?
- Tulatalu
- · Replies 10 ·
Tension Problems Given Two Weights
- yandereni
- · Replies 3 ·
What is the Ideal Temperature for Cooling a Cup of Tea?
- The28
- · Replies 5 ·
Racecar acceleration in g's and horizontal force from kinematics
- yandereni
- · Replies 7 ·
Resultant of two perpendicular 50N forces
- Sonny18n
- · Replies 2 ·
Sound waves in a closed pipe Problem
- pstir2
- · Replies 12 ·
Setting up differential equations for two boxes connected by a spring
- havsula
- · Replies 16 ·
Rocket maximum velocity calculation with unit conversion
- asadpasat
- · Replies 14 ·
Kirchhoff's and Ohm's law circuit diagram issue.
- Benthal
- · Replies 6 ·
Initial Velocity + Free Fall = Time
- julianwitkowski
- · Replies 1 ·
[Optics] Concave-Convex lens radius
- decsis
- · Replies 1 ·
How does a magnetic field perform no work?
- mahrap
- · Replies 9 ·
Magnetism and Current Concept Query
- Offlinedoctor
- · Replies 1 ·
Latent Heat in Solid-->Liquid transitions (phase change)
- thonwer
- · Replies 1 ·
Heat capacity ratio yields inconsistent results
- uter
- · Replies 9 ·
How does drop height affect trampoline amplitude?
- Nancee_K
- · Replies 14 ·
Electric field and electric potential problem
- ZARATHUSTRA
- · Replies 3 ·
Sound intensity and pressure at different distances using inverse square law
- RichardGib
- · Replies 3 ·
Plotting plane, cylindrical and spherical waves in Matlab
- allamsetty
- · Replies 7 ·
Car parking lights: current, resistance, and battery life with parallel bulbs
- stephenranger
- · Replies 10 ·
Why is pressure negative at lower end in Bernoulli equation derivation?
- kashan123999
- · Replies 7 ·
What is the correct force on q1 and the electric dipole moment?
- henrybrent
- · Replies 4 ·
Finding PE given mass, distance, and energy lost.
- Adam Affagal
- · Replies 3 ·
Gravitational force between Earth and sun calculation
- Thegiver431
- · Replies 3 ·
How Do You Calculate Thevenin Equivalent Circuit Without a Load Resistor?
- Alexander Max
- · Replies 3 ·
Dog accelerating from 2.0 m/s to 5.0 m/s over 14.0 m
- RachaelA
- · Replies 7 ·
Circular motion problem -- A ball rolling down an incline
- bijou1
- · Replies 7 ·
What Is the Temperature of Compressed Air in a Diesel Cylinder?
- Karol
- · Replies 3 ·
Fluids acceleration on inclined plane
- jonny23
- · Replies 35 ·
How high does a 1000 N boat ride in salt water vs fresh water?
- BrainMan
- · Replies 8 ·
Physics Problem with Spring Constant and Kinetic Friction
- Q7heng
- · Replies 9 ·
Why doesn't multiplying fringe spacing by 2 give the second dark fringe location?
- chrisahn97
- · Replies 8 ·
Very basic form of the diffusion law for gasses
- Coffee_
- · Replies 2 ·
Object is accelerated from rest , find KE
- discosucks
- · Replies 12 ·
Increasing Gravity and Acceleration
- kaikalii
- · Replies 1 ·
Calculating Initial Speed for a 45 Degree Angle Basketball Shot
- oreo
- · Replies 8 ·
Perpendicular force with a spiral
- Cri85
- · Replies 17 ·
Pressure of gas in sealed sphere at different temperature
- TaraaaK
- · Replies 9 ·
How Do You Calculate the Net Force on an Accelerating Car?
- discosucks
- · Replies 3 ·
Physics Problem with Lifting Force and Drag Coefficient
- Q7heng
- · Replies 2 ·
Work done by the tension on a cable
- discosucks
- · Replies 13 ·
What is the K.E. of the satellite?
- starchaser2020
- · Replies 4 ·
Pump compresses air into a tank
- Karol
- · Replies 4 ·
Does an adiabatic expansion follow a straight line on a V-P diagram?
- Karol
- · Replies 8 ·
What Determines the Speed of Waves?
- duran9987
- · Replies 1 ·
Calculating Delta V for Orbit Change
- starchaser2020
- · Replies 1 ·
Why doesn't 2A+2B=2C work for three equal vectors?
- rasen58
- · Replies 10 ·
Radius relation to centripetal force
- rasen58
- · Replies 2 ·
Solving for final position with a negative work value
- Selayna
- · Replies 2 ·
How long would Archimedes' lever need to be to move Earth?
- wolfspirit
- · Replies 6 ·
Transverse waves oscillation direction
- jonny23
- · Replies 5 ·
Velocity is proportional to distance
- nobahar
- · Replies 7 ·
Finding sample age from U-235 and U-238 abundance ratio
- Purple Baron
- · Replies 2 ·
Three Springs in an Equilateral Triangle
- agnishom
- · Replies 4 ·
Nuclear physics reaction, minimal energy to make it work
- Coffee_
- · Replies 23 ·
What is the minimum energy required to produce an electron-positron pair?
- arpon
- · Replies 3 ·
How Does Angular Velocity Relate to the Angle in Nested Cylinders?
- asdfghhjkl
- · Replies 4 ·
Mean value of graph - is my reasoning correct?
- PhysicStud01
- · Replies 15 ·
Box and hanging mass acceleration in pulley system
- frosty
- · Replies 9 ·
Pendulum measuring acceleration of car
- oreo
- · Replies 9 ·
Binary Stars and Apparent Magnitudes
- LavaLynne
- · Replies 1 ·
How Does Discharging a Capacitor Affect Its Internal Magnetic Field?
- Ben Whelan
- · Replies 3 ·
Acceleration of m1 when F=0 in pulley system (K&K 2.20)
- wesson
- · Replies 9 ·
Torque seesaw problem- rotational equilibrium
- bijou1
- · Replies 7 ·
Different angle in different frames, intro relativity
- Coffee_
- · Replies 7 ·
Question regarding why an example In kolenkow mechanics
- MidgetDwarf
- · Replies 2 ·
Finding Acceleration in a Pulley and Slope System
- Jazz
- · Replies 6 ·
Just a confusion -- A mass falling onto a pivoting rod
- Satvik Pandey
- · Replies 13 ·
Water flows from a compressed tank
- Karol
- · Replies 2 ·
Tension in rope using principle of moments
- Marcus27
- · Replies 3 ·