Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
What Are the Spring and Friction Constants for a Small Truck's Shock Absorbers?
- JulienB
- · Replies 4 ·
Derivative of self-energy in Peskin Schroeder equation 7.31
- dosantos86
- · Replies 1 ·
Grounded circuit, 2 batteries and 2 resistors
- kamhogo
- · Replies 6 ·
Two balls thrown from a balcony up and down at the same speed
- Ab17
- · Replies 5 ·
Impulse or Momentum Challenging Question
- i_hate_math
- · Replies 6 ·
Rotating bar hanging on a spring (oscillation)
- JulienB
- · Replies 26 ·
Calculate the EMF induced in the square?
- hrf2
- · Replies 2 ·
Line charge creating induced emf and displacement current
- gsmtiger18
- · Replies 1 ·
Is the direction N 10° W or W 10° N for this net force?
- alexandria
- · Replies 6 ·
What speed threshold requires relativistic effects for a massive particle?
- amyy
- · Replies 7 ·
How do I use the tip-to-tail method to add vectors and calculate net force?
- alexandria
- · Replies 24 ·
Is Flow Rate in Open Channels Affected by Backpressure?
- foo9008
- · Replies 11 ·
A really confusing question on potential energy,
- i_hate_math
- · Replies 4 ·
Work done using time, velocity and mass?
- TDizzl
- · Replies 14 ·
Constant force but angle is increased, what happens to work
- Frankenstein19
- · Replies 1 ·
Calculating Net Force Using Vector Addition
- alexandria
- · Replies 7 ·
How do I calculate distance using Newton's Second Law for a puck on a stick?
- alexandria
- · Replies 21 ·
How to Combine Gradient Uncertainty with other Uncertainty?
- Banker
- · Replies 3 ·
Terminal Velocity of magnet down a copper tube
- krisal
- · Replies 1 ·
Applying Newton's Universal Law of Gravitation
- science_rules
- · Replies 1 ·
Why is the 60 W bulb brighter than the 100 W bulb in series?
- kamhogo
- · Replies 13 ·
Rotational Motion of a bowling ball
- PrettyLights
- · Replies 5 ·
Coupled spring pendulum (harmonic oscillation)
- JulienB
- · Replies 16 ·
What is the expression for pressure distribution in a rotating tornado?
- Raptor112
- · Replies 3 ·
Mechanics, Distance and speed question
- Gajan1234
- · Replies 8 ·
Difference in Brightness between Two Bulbs
- crastinus
- · Replies 2 ·
How Do You Calculate Tension in a Rope Pulling a Box with Friction and an Angle?
- Balsam
- · Replies 5 ·
Optimal Width of a rotating wheel
- lehnim
- · Replies 6 ·
How do I find the path of a particle from position vectors?
- LoveBoy
- · Replies 7 ·
Force on a charge due to charged sheet
- Yashbhatt
- · Replies 2 ·
Time period in harmonic oscillation.
- LoveBoy
- · Replies 3 ·
Angular Momentum of the particle.
- LoveBoy
- · Replies 3 ·
Kinematics involving two objects
- Ab17
- · Replies 3 ·
How Fast Was the Second Stone Thrown to Match the First at the Cliff Base?
- Ab17
- · Replies 2 ·
Force and Energy of a block on a spring as it compresses.
- Lebombo
- · Replies 3 ·
Find L and R given voltage at different rates of current change
- Am_o
- · Replies 3 ·
Doppler effect and signs of the equation
- RUphysics3
- · Replies 3 ·
Falling rotating sphere and displacements
- LoveBoy
- · Replies 10 ·
How to Determine the Velocity of Block A with Pulley Masses Included?
- That_EDGEy_KiD
- · Replies 3 ·
Stopping Distance affected by Mass of Cart on Inclined Plane
- Bapple
- · Replies 1 ·
What Determines the Meeting Point of Two Falling Stones?
- Ab17
- · Replies 5 ·
How Should Uncertainty Be Handled When Averaging Measurements?
- LCHL
- · Replies 5 ·
Height of tower given objects dropped from top at same time?
- Ab17
- · Replies 3 ·
Position of Final Image in Concave Mirror with Glass Block
- Volcano
- · Replies 13 ·
Rotational Velocity with 2 Gears
- PrettyLights
- · Replies 4 ·
Bernoulli equation with water tank flow rates
- lurifax1
- · Replies 3 ·
Are two objects in free fall hitting the water at the same time?
- Ab17
- · Replies 6 ·
Moment of inertia and torque of a yoyo
- JulienB
- · Replies 9 ·
Simple gravitational potential energy
- sireh
- · Replies 2 ·
Induced Surface Current in Conducting Plane, Dropped Charge
- Ichigo449
- · Replies 14 ·
Thevenin's circuit analysis. Multiple voltage sources
- Galviniser
- · Replies 6 ·
How Wide Is the Slit in a Diffraction Experiment with 450nm Light?
- cassey
- · Replies 1 ·
What gives rise to a magnetic moment in a proton/neutron?
- pbutter
- · Replies 7 ·
Calculate initial speed of an athlete - projectile motion
- Peter Halsall
- · Replies 15 ·
How Many 100W Bulbs Can Be Powered by Converting Water's Potential Energy?
- ROCKSTAR99
- · Replies 12 ·
Force and energy changes when a ship decelerates
- risa
- · Replies 3 ·
Calculating Tire Pressure Change with Temperature Increase
- Revengeance
- · Replies 2 ·
What are the Eigenvalues and Eigenkets of a Spin-1/2 System in a Magnetic Field?
- phys-student
- · Replies 6 ·
Angle for maximum horizontal range from a cliff
- RoboNerd
- · Replies 20 ·
Deriving capacitor charge Q(t)=Qmax(1-e^(-t/tau))
- kamhogo
- · Replies 14 ·
Penetration Depth Review - Exam Prep
- nmsurobert
- · Replies 3 ·
Destructive vs Constructive interference
- RUphysics3
- · Replies 2 ·
Radius of charged particle moving in magnetic field
- 1missing
- · Replies 1 ·
Dynamics Skier on a Slope Problem
- IbrahimA
- · Replies 9 ·
Atwood Machine Lab Homework: Solve for Moment of Inertia
- Jam51
- · Replies 5 ·
Negative Moment of Inertia from Atwood Machine Experiment?
- firefox
- · Replies 13 ·
Standing Wave Nodes and Interference on a Stretched String
- RUphysics3
- · Replies 1 ·
Simple Uncertainty/Sig Fig Question
- Badgeray
- · Replies 1 ·
Finding the random uncertainty of a set of values
- 123leo
- · Replies 3 ·
Derive the Analog of Gauss' law
- KT KIM
- · Replies 2 ·
Calculating acceleration using Newton's 3rd law
- timelesstrix0
- · Replies 10 ·
Bernoulli equation (watering can)
- JulienB
- · Replies 2 ·
Question of electricity net force
- toesockshoe
- · Replies 5 ·
Easy collision question, momentum and energy
- PoohBah716
- · Replies 3 ·
Kepler's law and angular momentum conservation problem
- RoboNerd
- · Replies 17 ·
Specific heat capacity of a metal at low temperature
- erisedk
- · Replies 8 ·
Acceleration and velocity of a mass attached to a sphere
- JulienB
- · Replies 5 ·
Kirchoff's Laws Problem Current
- WesT4N
- · Replies 11 ·
What is the definition of proper time interval according to the book?
- joryboy
- · Replies 1 ·
Angular momentum and moment of inertia
- JulienB
- · Replies 2 ·
What's the difference between Δ and d in physics ?
- Peter25samaha
- · Replies 12 ·
Harmonic oscillator with friction
- bubblewrap
- · Replies 13 ·
Will a cylinder or cone held at the bottom of a water-filled beaker move up or down?
- Titan97
- · Replies 5 ·
Complex RC Circuit - Multiple Resistors
- FireZealot
- · Replies 10 ·
Simple harmonic motion of particles
- erisedk
- · Replies 9 ·
Reluctance in a cast steel ring
- DevonZA
- · Replies 10 ·
Finding energy in a 4 object charge system
- Anthony Santelices
- · Replies 7 ·
Magnetic Field Force of a proton
- PhysicsInNJ
- · Replies 6 ·
Why Does the Change in Momentum Equal 2pi in Laser Beam Force Calculations?
- Marcin H
- · Replies 3 ·
Cylinder wrapped with wire on hill with magnetic field
- kissmyasthma
- · Replies 3 ·
Calculating Gauge Pressure on a Sphere
- LoveBoy
- · Replies 15 ·
Relative motion and conservation of momentum
- stfz
- · Replies 6 ·
What are the forces acting on a child pulling a wagon up an inclined hill?
- IbrahimA
- · Replies 3 ·
Net Force and Direction of motion
- Marleycake
- · Replies 2 ·
Double ball drop and conservation of momentum
- stfz
- · Replies 5 ·
Calculating Force Exerted on Table Legs by Mass and Dimensions
- Kamisama
- · Replies 13 ·
What is the derivation of centripetal acceleration on a hypothetical planet?
- rrosa522
- · Replies 1 ·
Elastic collision between body A and spring-connected bodies B and C
- jessij
- · Replies 8 ·
Making a fomula to calculate the max power (electricity)
- Tqooa Ez
- · Replies 1 ·