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 happens to the negative charge
- negation
- · Replies 13 ·
Collision question involving velocity, Kinetic energy and conservation
- selsunblue
- · Replies 4 ·
Inelastic collision of two particles
- toothpaste666
- · Replies 16 ·
Where is the net force zero for a proton between two fixed charges?
- cmcdonald29
- · Replies 7 ·
Relativity - time in different reference frames
- Feodalherren
- · Replies 7 ·
Find the path equation for the vector field V = ky*i + kx*j
- dk_ch
- · Replies 8 ·
Bulk Modulus Problem: Sphere of Brass Diameter Change
- mreaume
- · Replies 1 ·
Can I Accurately Determine Uncertainty for Data Points with Varying x Values?
- aaaa202
- · Replies 7 ·
Simple faraday's law problem (phi = what?)
- darksyesider
- · Replies 9 ·
A simple harmonic oscillator has total energy E= ½ K A^2
- Myr73
- · Replies 8 ·
How to Find the Reading of Voltmeters in a Circuit with Identical Resistors?
- utkarshakash
- · Replies 5 ·
Path of {\vec{V}}: Finding Equation
- dk_ch
- · Replies 1 ·
Voltage across current-controlled-current-source
- kexanie
- · Replies 3 ·
Two stars orbiting a common center
- toothpaste666
- · Replies 25 ·
Mass-spring oscillator frequency and acceleration
- zday
- · Replies 2 ·
Power transported down a coaxial cable
- thecommexokid
- · Replies 8 ·
Why Does Detergent Cause a Cotton Loop to Expand on Water?
- sunquick
- · Replies 3 ·
What are the Kinematics of a Ball in Projectile Motion?
- timnswede
- · Replies 1 ·
What is the Equivalent Resistance of an Infinite Circuit with 1 kΩ Resistors?
- Saitama
- · Replies 18 ·
Calculating Current in a Mixed Tissue Conductor: A Weighted Average Approach
- ricebowl07
- · Replies 2 ·
Field due to semicircle, cut up into pieces
- CollegeStudent
- · Replies 7 ·
Liquid flowing through a capacitor
- utkarshakash
- · Replies 4 ·
What are the latest advancements in optics research?
- LeonhardEu
- · Replies 2 ·
Why do superposed waves use the same distance variable x?
- Tanya Sharma
- · Replies 19 ·
Volume Expansion: Answers to Homework Questions
- negation
- · Replies 3 ·
Finding direction of induced current
- 16Candles
- · Replies 1 ·
Charged particles arranged in tetrahedron
- utkarshakash
- · Replies 27 ·
Minimum separation for two opposite charges in a magnetic field
- utkarshakash
- · Replies 17 ·
When does an antinode's energy equal a node's energy in a standing wave?
- varunika
- · Replies 16 ·
Basic Kinematics Problem -- A plane flies North with a crosswind
- rr96
- · Replies 4 ·
What is the moment of inertia and angular velocity of a released rod?
- RyRy19
- · Replies 6 ·
How Do Pulley Systems Affect the Force Needed to Lift Weights?
- ciubba
- · Replies 1 ·
How Does Resonance Affect Current in a Parallel LCR Circuit?
- physiks
- · Replies 7 ·
Calculating Graviational Field
- areed6
- · Replies 1 ·
Finding acceleration of an Atwood's machine
- santoki
- · Replies 2 ·
Thermal Energy in 1 cubic meter of air at room temperature
- Bgerst103
- · Replies 8 ·
Power loss in 2km transmission line with 80kW at 400V
- kira506
- · Replies 9 ·
Solving a series LCR circuit via two methods
- fayled
- · Replies 13 ·
Direction of hole movement under electric field
- anhnha
- · Replies 11 ·
Rotating pendulum. Find absolute acceleration
- kulig15
- · Replies 18 ·
No Induced Current in a Moving Magnet?
- 16Candles
- · Replies 3 ·
How Does Pedal Rotation Relate to Bicycle Efficiency in Physics Labs?
- Tektriax
- · Replies 6 ·
Adding energy to an ideal gas without changing internal energy
- Numaholic
- · Replies 2 ·
Angular Acceleration of Bicycle Wheels
- rustyshackle
- · Replies 2 ·
Can diffusion exist in this case?
- anhnha
- · Replies 1 ·
Dynamics question
- ciubba
- · Replies 1 ·
Perceived/actual distance (block of glass with logo in water)
- 123456
- · Replies 1 ·
Estimating Walking Speed w/ Ideal Physical Pendula
- Bgerst103
- · Replies 2 ·
Kinematics problem-finding total distance
- Violagirl
- · Replies 2 ·
Projectile motion collisions problem
- Saitama
- · Replies 19 ·
Show simplification of dipole's electric field for certain case
- s3a
- · Replies 2 ·
Finding distance traveled per second with constant acceleration
- Violagirl
- · Replies 1 ·
Uniform Circular Motion amusement park ride
- collegelife101
- · Replies 7 ·
Position and velocity of a particle moving in 2D
- scrubber
- · Replies 5 ·
Can Friction Force Cause a Rigid Body to Move Uphill?
- Sumanth
- · Replies 14 ·
Maximum Extension of a Massless Rod After Impact with a Falling Ball
- Sumanth
- · Replies 1 ·
Max transverse speed on a sinusoidal wave
- ichivictus
- · Replies 7 ·
Circular Motion Homework: Tension & Min. Speed
- scrubber
- · Replies 1 ·
Spheres placed in an electric field
- utkarshakash
- · Replies 5 ·
Solving a Capacitance Problem with Current
- PhysE
- · Replies 5 ·
Finding initial velocity of projectile fired at 20° angle
- SlooM
- · Replies 5 ·
Electric field strength goes to 0
- Qube
- · Replies 1 ·
Electrostatics uniform electric field of magnitude
- meme177
- · Replies 2 ·
Resistance of cylinder case a and case b
- delsoo
- · Replies 3 ·
A man is pushing a box from behind with a constant net force F=146 N
- mrf2dhimself
- · Replies 2 ·
Why is the pendulum period expressed as an infinite series?
- Karol
- · Replies 6 ·
Show that the simple harmonic motion has a period
- Myr73
- · Replies 14 ·
Magnetic Field of a Finite Solenoid
- bmbuncher
- · Replies 1 ·
Fluid Mechanics and hydraulic lever
- Qube
- · Replies 3 ·
Why choose a rectangular surface for flux calculation near a wire?
- darksyesider
- · Replies 1 ·
Field in between two charged plates in a semi spherical arrangement
- Lillensassi
- · Replies 4 ·
Thermodynamics sealed piston Problem
- Bgerst103
- · Replies 5 ·
Momentum Conservation in an Accelerating Coordinate System
- Karol
- · Replies 1 ·
Force between two spheres connected by wire and battery
- Saitama
- · Replies 44 ·
Extension in spring with unequal forces acting on its two ends
- @bhishek
- · Replies 10 ·
Finding the Center of Mass of a pendulum
- antigen123
- · Replies 3 ·
2 dimensional collision confusion
- NKC
- · Replies 5 ·
How do I identify the unit from the question?
- Tangent100
- · Replies 2 ·
Spring-pushed block on inclined table energy problem
- physicos
- · Replies 15 ·
Thermodynamics: Mixing ice and water
- iAlexN
- · Replies 4 ·
Why is tension the same in both cords when one ball is twice as heavy?
- antigen123
- · Replies 4 ·
Pressure problem - Impulse of object striking a head
- ron360
- · Replies 6 ·
Clock, calculate displacement, avg. velocity, avg. acceleration.
- timnswede
- · Replies 5 ·
DVD/CD track spacing and storage capacity
- NeoXx
- · Replies 4 ·
Why no static friction in an inclined plane tension problem
- rzn972
- · Replies 2 ·
Jet accelerating in problem with Constant Acceleration
- Caolan
- · Replies 10 ·
How Many Forces on the Bottom Block?
- Bgerst103
- · Replies 3 ·
Mary on merry-go-round observing Matt's speed from her frame
- Saitama
- · Replies 21 ·
Phase relationship between current and voltage in an L section filter
- sfgoat
- · Replies 5 ·
Ball Drop and Projectile Motion: When Will They Meet?
- Dr.azwar
- · Replies 4 ·
What Charge Does the Third Sphere Acquire?
- utkarshakash
- · Replies 18 ·
How do Normal Force and Centripetal Acceleration Affect a Ferris Wheel Rider?
- hagobarcos
- · Replies 6 ·
Time for Faraday disk brake to lose half its kinetic energy
- 6c 6f 76 65
- · Replies 8 ·
Electron diffraction - effect of electron wavelength
- Molly1235
- · Replies 1 ·
Finding lens focal length to focus laser on 5 micron structures
- Matt atkinson
- · Replies 4 ·
How many rotations does a baseball make traveling 60.5 ft at 113 rpm?
- physicos
- · Replies 22 ·
Minimum Velocity of an object thrown directly up to never fall down?
- Nathanael
- · Replies 5 ·
Relative difference between moment of inertia for the earth
- zeralda21
- · Replies 3 ·
Potential Difference and Power in Resistor Circuit
- Gwozdzilla
- · Replies 1 ·
The total work in a Carnot cycle - checking some work
- Emspak
- · Replies 1 ·