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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Sphere Under Gravity Problem (Isaac Physics)
- bobbricks
- · Replies 1 ·
Resistance of the ground problem
- MNWO
- · Replies 4 ·
Ball caught by player, solve quadratic equation
- kitkat87
- · Replies 1 ·
Astronomy iron ratios in galaxy
- Puchinita5
- · Replies 4 ·
How much water will freeze when a piece of ice is thrown into it?
- Karol
- · Replies 5 ·
Dynamics question (need to find acceleration and tension)
- Wellenbrecher
- · Replies 4 ·
What is the velocity of the ball after H height? Considering wind resistance?
- TheWhiteKnyt
- · Replies 1 ·
Potential energies and finding the distance
- Seung Lee
- · Replies 7 ·
Conversations in Compton Effect
- user977784078
- · Replies 1 ·
How Long Does It Take for 10 Meters of a Rolled Flag to Unwrap?
- Misheel
- · Replies 6 ·
Calculating Impact Speed of a Ball Thrown Toward a Cliff
- HaLAA
- · Replies 1 ·
How Does Angle Affect Force Required to Move a Crate on Concrete?
- dioxy186
- · Replies 4 ·
Maximum speed ratio in undamped vs critically damped oscillation
- NATURE.M
- · Replies 4 ·
Is There an Error in My Kirchoff's Loop Problem Solution?
- mattwkeller
- · Replies 6 ·
Rock thrown from cliff, find initial and final velocities
- kitkat87
- · Replies 3 ·
Final Temperature of Hot Metal in a Calorimeter
- Karol
- · Replies 1 ·
Isobaric/isochoric (?) heating of an ideal gas
- MexChemE
- · Replies 5 ·
How Does Breaking Apart Enhance Safety in Formula One Cars?
- SpyIsCake
- · Replies 13 ·
Finding distance given two different velocities and times?
- sam1865
- · Replies 3 ·
Calculating Tension, Moment of Inertia, and Angular Speed in a Rotating System
- Ali0086
- · Replies 5 ·
Calculating The Area of a Spherical Cap
- ChemEng92
- · Replies 13 ·
Geometric Optics - Magnification
- LANS
- · Replies 5 ·
Circular Motion of a moving rock Problem
- KrazySocoKid
- · Replies 2 ·
When can we use Gauss's law in Cartesian coordinates?
- baby_1
- · Replies 1 ·
Mechanics -- Object sliding again with friction
- prehisto
- · Replies 5 ·
How much will a lead bullet's temperature rise if it stops without losing heat?
- Karol
- · Replies 9 ·
Determining Horizontal Sweep for RC Circuit Time Constant - Physics Lab
- AGGENGR
- · Replies 4 ·
Magnitude of a magnetic field a a point
- Jstuff
- · Replies 3 ·
Relativity problem involving a muon
- pstir2
- · Replies 1 ·
Wind turbine: Optimum pitch angle changes at different wind speeds
- trc97
- · Replies 1 ·
Why does the boy push with half the normal force on the sign?
- Shindo
- · Replies 6 ·
Propulsive force and force at interface
- cuj93
- · Replies 10 ·
Wow much thermal energy was generated by friction?
- starJ9
- · Replies 5 ·
How Do You Calculate the Final Mass of Water in a Calorimetry Experiment?
- unknown217
- · Replies 3 ·
De Broglie wavelength of an electron in hydrogen ground state
- Janet
- · Replies 3 ·
Find the potential difference in a rectangle
- PhysicsIdiot007
- · Replies 3 ·
What symbol for ticks on ticker tape
- gnome222
- · Replies 4 ·
Interpreting Simple Harmonic Motion Graphs
- Jimmy87
- · Replies 24 ·
Mass on a vertical Spring: finding maximum speed
- ilyketurdles
- · Replies 1 ·
How Is the Limiting Displacement A0 Determined in a Spring System with Friction?
- azupol
- · Replies 3 ·
How to Calculate Work Done from an Acceleration vs. Time Graph?
- CAllensworth
- · Replies 4 ·
Condition for avoiding collision when decelerating behind a slower car
- hitemup
- · Replies 5 ·
Maximum power developed by a lift
- MNWO
- · Replies 5 ·
Calculating Mass in Box 3 of a Pulley System
- Henrybar
- · Replies 2 ·
Radius of object in electric field
- user977784078
- · Replies 3 ·
Solving for Velocity of Falling Object with Air Resistance
- rlagustn
- · Replies 2 ·
Gravitational Potential Energy - Kinetic Energy
- Curveball
- · Replies 1 ·
Atwood machine lab: calculating theoretical and actual acceleration
- Student7987
- · Replies 9 ·
Finding Tension and Acceleration
- B3NR4Y
- · Replies 6 ·
Finding uncertainty for varying error bars
- joelwong
- · Replies 2 ·
Newton's second law, how to write it?
- LeighV
- · Replies 3 ·
How to find angle after applying Pythagorean Theorem?
- LeighV
- · Replies 4 ·
Projectile motion-range calculation
- Apleo
- · Replies 12 ·
How does doubled downforce affect the maximum speed formula?
- AJH1
- · Replies 13 ·
Potential Energy Gravitation Kinetic Energy
- Curveball
- · Replies 1 ·
Projectile Motion ball is thrown upward
- creynaud
- · Replies 5 ·
How Does Temperature Equilibrate in Mixed Metal and Water Systems?
- Karol
- · Replies 6 ·
What is the oscillation frequency of a vibrating hydrogen molecule?
- oldspice1212
- · Replies 2 ·
Special relativity - time dilation
- Achmed
- · Replies 1 ·
How Can Energy Methods Determine Ally's Initial Height From a Slide?
- Ering
- · Replies 4 ·
Finding surface charge densities and potential (metal cylinder)
- ghostfolk
- · Replies 3 ·
What Angle Should a Fireman Aim the Hose to Reach the Same Height?
- comerjames97
- · Replies 1 ·
How Does Changing Tension and Radius Affect the Work Done on a Toy Plane?
- Sal915
- · Replies 1 ·
Determine freq of AC that induces stress in the specimen
- Dustinsfl
- · Replies 2 ·
Elastic collision between proton and carbon atom at 3.50×10⁷ m/s
- Justin M
- · Replies 1 ·
Vertical Load on a Purlin - find x and y force components
- KV-1
- · Replies 1 ·
Using v= omega cross r to find instantaneous velocity
- FaraDazed
- · Replies 4 ·
Forces between particles at a distance. Can someone please check this?
- kirsten_2009
- · Replies 2 ·
Photoelectric effect threshold
- Nairabhi
- · Replies 5 ·
Tension in String between two blocks
- FaraDazed
- · Replies 9 ·
Deceleration without knowing the time
- BOAS
- · Replies 5 ·
What direction must the fielder take
- hitemup
- · Replies 2 ·
How Fast Was the Bullet That Lodged in the Wooden Block?
- creynaud
- · Replies 6 ·
Coulomb's law: finding distance and charge from force data
- kirsten_2009
- · Replies 3 ·
Calculating Current Flow in a Short-Circuited Battery
- kirsten_2009
- · Replies 3 ·
Distance Traveled by a Fired Projectile
- Lexielai
- · Replies 4 ·
How Do I Determine Net Velocity from Velocity Components and Current?
- LeighV
- · Replies 11 ·
Relating y=mx+c and T^2=kd^3+4pi^2l/g
- Natalie Morris
- · Replies 3 ·
Pelican drops fish from 4.9 m, travels 7.5 m horizontally
- Mitxigan
- · Replies 12 ·
Burning fuel and a motor's efficiency
- Karol
- · Replies 2 ·
Calculating EMF Induced by Moving Rectangular Loop
- rbn251
- · Replies 2 ·
Why is isentropic compression work integral V dp, not integral P dv?
- ajayguhan
- · Replies 13 ·
Normal force on the landing gear when the airplane lands
- Wapapow10
- · Replies 3 ·
What is the minimum wattage rating the resistor should have?
- zug
- · Replies 5 ·
How Tall Is the Building If a Brick Is Thrown Upward?
- MDT5507
- · Replies 3 ·
What happens to a rod when an impulse is applied and it's floating in space?
- Karan Singh
- · Replies 1 ·
Maximum angle in a vertical circular motion
- Quadrat
- · Replies 24 ·
Vectors and finding relative speed
- bluetriangle
- · Replies 1 ·
Gaussian surface surrounding only a proton inside a conductor
- RMZ
- · Replies 5 ·
Net deviation of ray after reflection and emergence
- Eddie10
- · Replies 8 ·
What fraction of the Sun’s total mass is lost during fusion?
- !Jon Snow!
- · Replies 1 ·
Final temperature of the gas mixture,neglecting heat losses
- Intekhab Alam
- · Replies 1 ·
Double Pulley Mechanics Problem
- MissBisson
- · Replies 2 ·
Problem solving for current in parallel resistors
- Kavorka
- · Replies 1 ·
Force Applied to a Box on a Flat Surface, Find the Force
- logan3
- · Replies 1 ·
Rolling, torque and kinetic energy
- Lord Anoobis
- · Replies 10 ·
Solving for Acceleration of Mass on Cylinder w/ Frictionless String
- Latao Manh
- · Replies 6 ·
Ladder leaning on wall, person on ladder.
- astrologically
- · Replies 10 ·
Collisions (Linear Momentum Conservation) (practice 7-9 Q9)
- gcombina
- · Replies 2 ·
Calculating angular momentum of a sphere
- BBC of peace
- · Replies 2 ·