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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Frictionless ball in a rotating reference frame.
- sbhit2001
- · Replies 2 ·
Moving Particle is Brought to Rest by a Resisting Force
- jmlibunao
- · Replies 5 ·
Understanding the Relationship between Frequency and Energy in Transition States
- adamyoung
- · Replies 1 ·
Pulley System Where String Breaks
- jmlibunao
- · Replies 11 ·
Elastic string supporting particle P hit by particle Q: finding modulus and motion
- jmlibunao
- · Replies 7 ·
Finding equivalent resistance in series-parallel resistor network
- nchin
- · Replies 2 ·
How Does Angus Macbangus's Head-butt Physics Work?
- freshcoast
- · Replies 1 ·
Finding Coefficient of friction with limited info
- shcksdid
- · Replies 3 ·
What is the Frequency for In-Phase Current and Voltage in RLC Circuit?
- monnapomona
- · Replies 11 ·
What direction will a man appear to be rowing in relative motion?
- medwatt
- · Replies 5 ·
Surface charge density due to point charge
- NewtonianAlch
- · Replies 3 ·
Moment of inertia for a non-uniform rod with varying density
- dinospamoni
- · Replies 2 ·
Electric field at a distance greater than the radius of sphere
- rocapp
- · Replies 2 ·
Finding centripetal force of an object
- ajbwarrrior
- · Replies 1 ·
Torque around a curb - bicyle forces problem
- elemons
- · Replies 8 ·
Moment of Inertia of Compound Disk
- capst
- · Replies 2 ·
Finding moment of inertia for a hemisphere
- dinospamoni
- · Replies 6 ·
Sphere on spring pulling block A with friction after 25 cm fall
- medynamics
- · Replies 2 ·
What is the speed of recoil of the chair and cat?
- Sneakatone
- · Replies 6 ·
Electrodynamics- combination of resistors
- othonmp
- · Replies 11 ·
Object flying off a rotating disc
- quark001
- · Replies 6 ·
Blood Pressure taken at different heights (No calculations involved)
- FollowTheFez
- · Replies 1 ·
3 printers rest on top of each other on a table [FORCES]
- dungas
- · Replies 3 ·
Getting Back Into Physics: Struggling to Understand Electromagnetism
- disknoir
- · Replies 3 ·
Stability of circular orbits under perturbation for exponential central force
- CAF123
- · Replies 30 ·
Finding Maximum Power in an AC Circuit
- pious&peevish
- · Replies 12 ·
Finding parameters of a hyperbolic orbit
- CAF123
- · Replies 11 ·
Find a point charge a distance form a charged rod
- rocapp
- · Replies 3 ·
Hooke's Law and Force in a Slingshot
- mcnealymt
- · Replies 4 ·
Current and Impedance in a Transformer
- pious&peevish
- · Replies 4 ·
Find electric field a distance from a charged sheet
- rocapp
- · Replies 3 ·
Why Does Tension Affect Both Masses Equally in a Pulley System?
- quark001
- · Replies 27 ·
Momentum of two colliding trollies.
- coconut62
- · Replies 4 ·
Celestial mechanics with symplectic integrators
- Masklin
- · Replies 3 ·
Electrical saw with linear speed
- Robertoalva
- · Replies 2 ·
Average Effective Dipole moment
- xz4chx
- · Replies 2 ·
Confusion about Coulomb's Law and 3 Point Charges
- Roodles01
- · Replies 2 ·
How many time constants must elapse in a capacitor?
- yogotah
- · Replies 1 ·
RLC Circuit (solved; but not sure where solution is incorrect)
- pious&peevish
- · Replies 2 ·
Definition of Magnetic Declination,Inclination
- Manish Bhat
- · Replies 1 ·
Physics problem, basketball dunk (Hookes law)
- x86
- · Replies 2 ·
What is the current that runs through the circuit
- badboydasgatas
- · Replies 4 ·
Solving Work, Energy Problems with Asteroids
- CollegeStudent
- · Replies 11 ·
Electric Potential in RC Circuits
- Bashyboy
- · Replies 11 ·
Potential of a uniformyl charged sphere
- ehabmozart
- · Replies 3 ·
Relative velocities - Velocity of impact
- memoguy
- · Replies 3 ·
Innovative mechanical or electrical really cheap toy
- agnibho
- · Replies 3 ·
Special Relativity collision problem
- subsonicman
- · Replies 1 ·
An approach to conservation of electrical mechanical energy
- ehabmozart
- · Replies 3 ·
How Much Less Do You Weigh at the Top of the World Trade Center?
- robertmatthew
- · Replies 3 ·
Physics problem, involving Hookes Law?
- x86
- · Replies 2 ·
Ideal gas-thermodynamics, thermal equilibrium
- oxman
- · Replies 17 ·
Magnetic Induction Through a Moving Wire
- Broem
- · Replies 1 ·
What is the current in the hanging wires?
- Colts
- · Replies 6 ·
Spring powered dart gun conceptual question
- freshcoast
- · Replies 5 ·
Finding wavelength from dark fringe in double slit experiment
- MarcL
- · Replies 12 ·
What happens to the gravitational field strength's magnitude if
- chaishreen
- · Replies 5 ·
Grade 11 Forces Help: Acceleration, Friction & Unit Test Prep
- Zarquad
- · Replies 5 ·
Voltage, Current, and Time Graph with Sine Wave
- anomalocaris
- · Replies 4 ·
Compression Distance Calc of Spring: F=-kx-bx^3
- fredrogers3
- · Replies 1 ·
Entropy Change of a Monatomic Ideal Gas Compressed Adiabatically
- Basis
- · Replies 5 ·
Finding Resistance in a Parallel Circuit
- Mashfeek
- · Replies 5 ·
Electric Potential and Potential Energy Due to Charged Particles
- brojas7
- · Replies 6 ·
Calculating the mass of matter required to accelerate a spaceship
- dylhynes
- · Replies 3 ·
Euler Lagrange Equation Question
- HiggsBrozon
- · Replies 3 ·
Predicting the temperature of absolute zero experimentally
- PhizKid
- · Replies 7 ·
Proofing Moment of Inertia Solid Sphere
- chocophysuny
- · Replies 6 ·
Why Do Second and Third Order Spectra Overlap in Diffraction Grating?
- Nemo's
- · Replies 3 ·
Little questions (Force, Moment, Young)
- coconut62
- · Replies 13 ·
Dynamics, Newton's laws, Problem with free body diagram and work
- akmenio
- · Replies 1 ·
Is My Momentum Lab Chart Correct?
- silentcoder
- · Replies 1 ·
Finding potential difference(electric circuit)
- Jabababa
- · Replies 1 ·
Definition of first law of thermodynamic?
- mugen715
- · Replies 1 ·
Quick Quick electrical current concept question
- StephenD420
- · Replies 4 ·
Hockey Puck- Physics Friction Problem
- IamMoi
- · Replies 6 ·
How much current does a 1500W electric appliance draw in a 120V circuit?
- Jabababa
- · Replies 3 ·
How Long Does a 25% Efficient 750W Motor Take to Lift a 45kg Object to 9m?
- Jabababa
- · Replies 11 ·
Calculating Current of Alpha Particle Beam
- Jabababa
- · Replies 7 ·
Calculate the emf of Battery w/ External & Internal Resistance
- Jabababa
- · Replies 1 ·
Maximum Light Bulbs on a 110V Circuit with 20A Limit?
- Jabababa
- · Replies 2 ·
Electromotive force of automobile battery
- member 392791
- · Replies 12 ·
Electric Circuit: Find Voltage Req'd to Charge Battery
- Jabababa
- · Replies 1 ·
Max Range Potato Launcher w/ Spring Force Problem
- freshcoast
- · Replies 10 ·
What is the minimum turn radius for a roller coaster with given conditions?
- freshcoast
- · Replies 27 ·
How Do You Calculate the Moment of Inertia for Combined Square Laminas?
- hms.tech
- · Replies 3 ·
Designing/Finding Something that Sinks Slowly
- DivineProdigy
- · Replies 4 ·
Energy considerations in solving a bungee jumper question
- Toranc3
- · Replies 3 ·
Testing for Charges in X-Y Plane Given Field Lines
- trevor51590
- · Replies 1 ·
Propagation of uncertainty in an experiment
- MeissnerEffect
- · Replies 1 ·
Locomotive question with three trains involving force and acceleration
- needingtoknow
- · Replies 6 ·
What is the excitation energy of an atom after a photon collision?
- Unicorn.
- · Replies 5 ·
Ranking Brightness of Lightbulbs in a Circuit
- leonardthecow
- · Replies 1 ·
Why is the following situation impossible?
- physics=world
- · Replies 3 ·
Using ratios to obtain the weight of a person at a specific distance
- needingtoknow
- · Replies 2 ·
How far will a pullback car go? Spring and friction coefficients.
- Totally
- · Replies 3 ·
The lifeguard problem: find the direction of sprint.
- tsuwal
- · Replies 2 ·
How Do Birds Generate Lift and Drag While Gliding?
- 7Suarez
- · Replies 7 ·
Electric field at the center of a semicircle
- rocapp
- · Replies 2 ·
Circular Motion Question: Bird's Net Vertical Force and Upward Lift Calculation
- FollowTheFez
- · Replies 2 ·
Calculating Space Probe Speed for Escape Velocity
- kopinator
- · Replies 2 ·