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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Mechanics question (vector descriptions of two birds' flight paths)
- trew
- · Replies 1 ·
Estimating the mass of our galaxy, and the number of stars in our galaxy
- aj_17
- · Replies 1 ·
Capacitor with dielectric as spring
- Muthumanimaran
- · Replies 4 ·
How can I minimize uncertainty in circular motion experiments?
- Seneka
- · Replies 14 ·
Projectile Motion Distance Calculation
- chelsea01
- · Replies 1 ·
Why is dt/dx = 0 in deriving the law of reflection?
- Fernando Rios
- · Replies 3 ·
Rigid body equilibrium question
- dbag123
- · Replies 1 ·
Binding energy per nucleon in nuclear fusion vs nucleon binding energy
- bonbon22
- · Replies 4 ·
Why Use 110 Degrees Instead of 70 for F2 Components?
- Benjamin_harsh
- · Replies 4 ·
Trivial question regarding Newton's Third Law and Elasticity
- JC2000
- · Replies 17 ·
Calculate the difference between initial and the final masses
- amazingphysics2255
- · Replies 24 ·
Draw an electric circuit potential graph
- EMEE_
- · Replies 5 ·
Binding energy and excited nucleus question
- bonbon22
- · Replies 9 ·
Calculate the mass deficit in this nuclear reaction
- amazingphysics2255
- · Replies 12 ·
Minimizing the area of a channel in contact with water
- Zouatine
- · Replies 1 ·
Why not use permittivity of free space with insulator between capacitor plates
- bonbon22
- · Replies 1 ·
3D statics: 300N box on inclined plane with rope and vertical force
- dbag123
- · Replies 19 ·
A problem involving 'stress' and possible moment of force(?)
- JC2000
- · Replies 16 ·
Alpha Decay and Total Kinetic Energy
- asifion
- · Replies 10 ·
Find the angle between two vectors
- lwin
- · Replies 8 ·
Calculating the moment of inertia of Cone
- EEristavi
- · Replies 4 ·
Find Vol 2 in Ideal Gas Law Problem with V1 and V2 Open and V3 Shut
- Catstranaughts
- · Replies 6 ·
What is the solution to the Center of Mass problem?
- Riman643
- · Replies 4 ·
Calculating the Gauge of a Copper Wire for a Thermometer Bridge Circuit
- PaxFinnica96
- · Replies 5 ·
Manipulating equation for Young's Modulus and Hooke's Law
- JC2000
- · Replies 1 ·
What are the names of these "F" arrows in these three diagrams?
- Benjamin_harsh
- · Replies 8 ·
Solve n-2)180: Video Explanation Requested
- Benjamin_harsh
- · Replies 3 ·
Hot air balloon buoyancy problem
- Jpyhsics
- · Replies 10 ·
Flux from an infinite charged sheet
- HarishRR
- · Replies 5 ·
Standing Waves Problem with Unknown Mass
- NP04
- · Replies 1 ·
Hard time with this Vector Velocity Problem
- KevMilan
- · Replies 12 ·
Closed form of the position of a bouncing ball
- Bibibis
- · Replies 3 ·
Relating the universal law of gravitation and Newton's second law
- hi im nimdA
- · Replies 10 ·
AC Current versus AC Voltage on the Neutral Wire of AC Mains
- Sarrah
- · Replies 5 ·
How to integrate the electric field of the square sheet
- garylau
- · Replies 12 ·
Y directed force as a function of time
- tj77
- · Replies 15 ·
Calculating Drag Through A Pipe
- tomtomtom1
- · Replies 1 ·
Circuit Analysis Question -- Solving for a multi-resistor circuit
- preet_jay
- · Replies 9 ·
What forces affect an astronaut?
- davomil999
- · Replies 2 ·
Elastic collision between billiard balls at 4.00 m/s
- ejantz
- · Replies 7 ·
Calculating the work done on a motorcycle and rider
- member 661905
- · Replies 7 ·
Potential at a point multiple choice question ( aqa)
- bonbon22
- · Replies 3 ·
Why Is My Rigid Body Equilibrium Equation Incorrect?
- dbag123
- · Replies 6 ·
Determine the magnitude of the total force exerted by the track on the
- TheDudeTR
- · Replies 1 ·
Conservation of energy for a block on an incline plane
- Lone Wolf
- · Replies 1 ·
Two-dimensional perfectly inelastic collision between two vehicles
- Lone Wolf
- · Replies 3 ·
Finding acceleration when a force is applied to one mass in a pulley system
- KatrineRav
- · Replies 8 ·
Finding the path of an oscillating string
- lioric
- · Replies 3 ·
Momentum vectors graph ( from aqa paper)
- bonbon22
- · Replies 1 ·
Why does doubling force with a pulley halve the distance?
- ali PMPAINT
- · Replies 1 ·
A contrete block released from the rest
- TheDudeTR
- · Replies 7 ·
Energy and non-conservative forces
- Josh0768
- · Replies 1 ·
Solving for c: Speed of Q2 in Q1 Reference Frame
- Pochen Liu
- · Replies 2 ·
Why does my Lorentz transformation give negative time?
- Pochen Liu
- · Replies 8 ·
Why Does t' Include vx/c² in Lorentz Transformations?
- Pochen Liu
- · Replies 2 ·
Comet's acceleration due to ejected particles
- barbs00
- · Replies 5 ·
Why is the final answer for the micrometer measurement 3% instead of 2.9%?
- trew
- · Replies 2 ·
How long will it take for an object to stop with a defined force over time?
- Samwell
- · Replies 12 ·
Compare travel times for two paths (one longer but lower than the other)
- Aleoa
- · Replies 5 ·
Finding total time to travel a distance with acceleration and deceleration
- Memorical
- · Replies 8 ·
Dynamics Problem: Determine Velocity and Acceleration of Rigid body
- owlwise2010
- · Replies 2 ·
Finding equilibrant direction and angle from two forces
- Benjamin_harsh
- · Replies 3 ·
Electricity in transmission lines (Simple V^2/R =P)
- bonbon22
- · Replies 12 ·
How to represent this statement in a diagram?
- Benjamin_harsh
- · Replies 11 ·
What is the wavelength of a pulse on a hanging rope with changing tension?
- harambe
- · Replies 15 ·
Meaning of ##\Delta T## in the context of calorimetry
- JC2000
- · Replies 12 ·
Power dissipation question I^2 R
- bonbon22
- · Replies 10 ·
What is the maximum speed of a proton if its kinetic energy is 1.28x10^-14 J?
- lilymay992
- · Replies 5 ·
What does omega mean in the photon energy derivation?
- Randomchemstudent
- · Replies 3 ·
Simple Harmonic Motion Experiment Problem
- NP04
- · Replies 2 ·
First time posting, not sure if this is the right place
- tryingtounderstand
- · Replies 3 ·
What Is the Velocity of the Krypton Atom Relative to the Tube?
- Man1la
- · Replies 11 ·
Conductive and grounded shells
- Kosta1234
- · Replies 9 ·
Forces in a loop on a rolling body
- rbergs215
- · Replies 10 ·
First harmonic question ( from Aqa paper)
- bonbon22
- · Replies 2 ·
Negative value for time squared in projectile motion
- pluralangel
- · Replies 5 ·
What is the relationship between pipes and temperature?
- deynak
- · Replies 3 ·
How to find the max height a projectile can reach on a hillside
- Justinjah91
- · Replies 12 ·
Finding spring extension from ball kinetic energy
- Physics_Beginner300
- · Replies 2 ·
Heat Capacity energy exchange problem
- sww_world
- · Replies 1 ·
How long will it take to boil 1 liter of water?
- EMEE_
- · Replies 7 ·
Simple ladder question (moments)
- bonbon22
- · Replies 14 ·
Matrix Multiplication -- Commutivity versus Associativity
- Crystal037
- · Replies 12 ·
State three reasons why the phase difference between two light waves
- eiregirl
- · Replies 2 ·
Gauss's law -- Integral form problem
- jerryfelix30
- · Replies 3 ·
What is the Average Density of the Universe and Its Scale Over Time?
- Thomas Smith
- · Replies 5 ·
Doppler Effect Problem (Very Confusing)
- affank414
- · Replies 10 ·
Calculating Resistance at Multiple Points in a Resistor Network
- Eucliwood
- · Replies 7 ·
Finding tension in pulley system with friction on incline
- Riman643
- · Replies 10 ·
Beta Decay: 14C6 → 14N7+ e− + νe
- Crystal037
- · Replies 3 ·
Circuit confusion, light bulbs, switches, and batteries
- BluJay214
- · Replies 3 ·
Normal mode of an infinite spring pendulum system
- Miles123K
- · Replies 3 ·
Using diffraction grating equation with double slits
- bonbon22
- · Replies 2 ·
Net force as a function of time?
- Comet1592
- · Replies 8 ·
Solving for image height given ##h_o, d_i##, and r
- harrypoterfan
- · Replies 1 ·
Is My Calculation of Moment of Inertia Using the Parallel Axis Theorem Correct?
- Romain Nzebele
- · Replies 3 ·
Simple kinematics multiple choice question
- NP04
- · Replies 1 ·
Required speed for two events to be simultaneous
- Celso
- · Replies 11 ·
How can I find water velocity between two cross-sections using continuity and Bernoulli?
- Taylan
- · Replies 10 ·
Calculate the total resistance by integration using the conductivity equation
- Dr-LucienSanchez
- · Replies 5 ·