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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Amplitude of a Damped, Driven Pendulum
- AJKing
- · Replies 7 ·
Thermodynamics ice cube Problems
- CAF123
- · Replies 6 ·
How do you solve these stroboscobe angular speed problems?
- shin777
- · Replies 19 ·
Calculating the height after an elastic collision
- bna10
- · Replies 1 ·
Ideal Gas HW Problem: Pressure at 11,000 meters?
- Cuckooforcocoa
- · Replies 1 ·
Spring constant for elevator safety with maximum acceleration limit
- Ampere
- · Replies 1 ·
Two Transverse Sinusoidal waves combine in a medium
- Willjeezy
- · Replies 3 ·
RC Circuits: Graph Homework - Determine Flash Frequency & Voltage Sketch
- sunflowerzz
- · Replies 2 ·
Quadratic equation ball 72km/h
- LDC1972
- · Replies 11 ·
Angular frequency=2*pi*frequency
- pyroknife
- · Replies 8 ·
Basic torque fulcrum problem assitance needed
- PsychonautQQ
- · Replies 5 ·
Projectile fired from moving vehicle at height
- -sandro-
- · Replies 6 ·
Finding starting position with negative average velocity
- Suarden
- · Replies 6 ·
Find Free Charge Enclosed by Sphere of Radius R
- zephyr5050
- · Replies 8 ·
How Do Capacitors Behave in Series and Parallel Networks?
- sunflowerzz
- · Replies 5 ·
Negative average velocity problem
- Suarden
- · Replies 1 ·
Potential Of Negetive and Positive charges
- andyrk
- · Replies 2 ·
What is the magnitude if the total force exerted by the four charges
- pr_angeleyes
- · Replies 11 ·
Does the electric field reach a value equal to half its maximum value?
- pr_angeleyes
- · Replies 2 ·
Is the Magnitude of Vector Addition Equal to the Sum of Magnitudes?
- Matt_h
- · Replies 2 ·
Radioactive Source Emitting Only Alpha and Gamma Radiation
- Molly1235
- · Replies 3 ·
Car Traveling the Circle - Kinematic Quiz
- jtigers1
- · Replies 8 ·
The end of a ski jump(projectile motion)
- babysnatcher
- · Replies 12 ·
Direct collisions on an inclined plane
- Woolyabyss
- · Replies 4 ·
Efficiency of a Light Bulb: Calculating Energy Transfer
- Molly1235
- · Replies 2 ·
Gauss’s law can be used to show that the electric field at a given di
- pr_angeleyes
- · Replies 1 ·
Energy density between charged parallel plates
- pr_angeleyes
- · Replies 1 ·
What Is the Maximum Elongation of the Spring Between Two Moving Discs?
- Saitama
- · Replies 89 ·
Stacked blocks pulled horizontally
- judas_priest
- · Replies 42 ·
Why is the procedure for finding Va-Vb in the given circuit incorrect?
- sankalpmittal
- · Replies 18 ·
Linear thermal expansion of steel
- honeybeau
- · Replies 1 ·
Finding mass in a pulley system
- Robertoalva
- · Replies 12 ·
How do you convert flash/min to rev/s using stroboscope
- shin777
- · Replies 3 ·
Kinematics motion, projectile. This was an mcat problem. Thanks
- HumorMe81
- · Replies 6 ·
Intuitive understanding of capacitors in series and parallel
- psilocybin
- · Replies 3 ·
AC circuit: is the voltage source absorbing or delivering?
- mrhingle
- · Replies 4 ·
Calculate frank's distance and displacement.
- STEMucator
- · Replies 9 ·
Finding the Rate of Change of a Falling Ladder
- sherrellbc
- · Replies 2 ·
Calculating Time of Death Using Newton's Law of Cooling
- 2013
- · Replies 10 ·
Why does a falling ladder's height derivative become undefined after t=0?
- sherrellbc
- · Replies 13 ·
Physics 12 vector (sin law, cos law) problem
- gdhillon
- · Replies 4 ·
Physics 12 momentum and vector question
- gdhillon
- · Replies 3 ·
Calculating Work Done by a Horse Pulling a Wagon with Friction on a Level Road
- gdhillon
- · Replies 2 ·
Quite a few phys 12 questions, on unit 3 dynamics,energy,work,power
- gdhillon
- · Replies 3 ·
Physics 12: Power Output Calculation for Accelerating Object
- gdhillon
- · Replies 2 ·
Physics 12 energy, work question
- gdhillon
- · Replies 2 ·
The resistance in water between two bouys
- Order
- · Replies 7 ·
Physics 12 energy/work question
- gdhillon
- · Replies 1 ·
Physics 12 Momentum and work, energy question
- gdhillon
- · Replies 2 ·
Gravitational force at half Earth's radius
- PsychonautQQ
- · Replies 5 ·
Physics 12 law or conservation of energy
- gdhillon
- · Replies 2 ·
Pulley on inclined plane problem
- gdhillon
- · Replies 1 ·
How Does a Raft Move When Divers Jump Off in Different Directions?
- gdhillon
- · Replies 1 ·
Interesting Newtonian problem involving friction
- PsychonautQQ
- · Replies 17 ·
Extreme Confusion of centripetal acceleration force and normal force
- SecretSnow
- · Replies 1 ·
Determine the amount of americium-241 remaining after 15 years.
- dannie
- · Replies 12 ·
Gravitational Weight into kilograms
- BadSkittles
- · Replies 8 ·
How Long Does It Take for Half the Energy in a Capacitor to Dissipate?
- PsychonautQQ
- · Replies 3 ·
Calculate the average force acting on the block
- agoogler
- · Replies 11 ·
Physical Problem - triangle as a pool table
- 2013
- · Replies 11 ·
Centripetal Force of an amusement park ride
- kevin17ym
- · Replies 6 ·
Conceptual centripetal problem of a spinning ball attached to a string
- kevin17ym
- · Replies 9 ·
Proof that all charge lies at the surface of a conductor
- Final_HB
- · Replies 7 ·
Inelastic Collision Problem: Speed of Earth and People
- Arcarius
- · Replies 3 ·
Finite square well potential energy
- Jalo
- · Replies 2 ·
Why can't we walk on a frictionless surface?
- andyrk
- · Replies 25 ·
Direct collision with a barrier at an angle
- Woolyabyss
- · Replies 5 ·
Airplane diving with a circle radius
- Robertoalva
- · Replies 17 ·
Two things that would minimize environmental impact(fission reaction)
- dannie
- · Replies 2 ·
What is the energy density of the electric field ?
- pr_angeleyes
- · Replies 2 ·
Bra-ket identity with hermitian operator eigenvalues
- JBrandonS
- · Replies 3 ·
How Do You Apply Sig Figs in Calculations and Trigonometry?
- jaydnul
- · Replies 3 ·
What is the mass of the sphere?
- dannie
- · Replies 2 ·
Collision between two spheres with coefficient of restitution
- tauwee
- · Replies 3 ·
Distance travelled whilst decelerating
- gary32
- · Replies 47 ·
Angular acceleration given force, moment arm and inertia?
- joema
- · Replies 3 ·
Calculating Horse Travel Time from Manila to Baguio
- Furfox
- · Replies 5 ·
Tensions Problem: 2 ropes and 3 blocks
- JANGurTHANG
- · Replies 1 ·
Projectile motion with mass height and range
- SPiazzo
- · Replies 2 ·
How much dynamo power needed to charge a 3.5V 1000mA battery by hand crank?
- R Power
- · Replies 7 ·
Conservation of Angular Momentum of a man
- andyrk
- · Replies 18 ·
Instantaneous Centre of Rotation
- andyrk
- · Replies 24 ·
Computing The Gravitational Force At A Point
- Bashyboy
- · Replies 5 ·
Container with two gases and equation of state
- gerardpc
- · Replies 3 ·
How do you find the density of a liquid with a submerged block?
- agentlee
- · Replies 1 ·
Calculating Retarding Force for a Free Falling Mass
- gary32
- · Replies 15 ·
How much force does it take to send a 200lbs object flying?
- Zeromaru
- · Replies 2 ·
Particle going in a circle with speed U problem
- hamilbr
- · Replies 2 ·
Path dependence - Question of Thermodynamics
- gerardpc
- · Replies 1 ·
Where do potential drops occur in simple circuits?
- vadevalor
- · Replies 24 ·
How are these derived for an inclined plane?
- catzmeow
- · Replies 5 ·
What is the proof that periods cancel out in finding angular displacement?
- Bashyboy
- · Replies 8 ·
Pulley and block on 30° incline with friction
- Ampere
- · Replies 2 ·
Why is Cpln(T2/T1) Zero for Isothermal Entropy Change?
- freshbox
- · Replies 2 ·
Find internal energy from equation of state with Cp = 3R
- gerardpc
- · Replies 5 ·
What is the Constant of Proportionality in Newton's Second Law of Motion?
- andyrk
- · Replies 6 ·
Finding 3 currents in 3 different branches
- judas_priest
- · Replies 11 ·
Equation Finding Strategies for Solving Physics Problems
- shin777
- · Replies 8 ·
Torque of human arm when bending
- mdp_somebodeh
- · Replies 4 ·
Calculating the Resistance of a Wedge
- elionix
- · Replies 4 ·