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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How to find the period of small oscillations given the potential?
- Davidllerenav
- · Replies 42 ·
Particle Dynamics Problem (kinematics)
- aligator11
- · Replies 3 ·
How can I calculate the rate of energy absorption from nuclear decay?
- Sorin2225
- · Replies 23 ·
Pulley and cart system acceleration
- i_love_space_and_eng
- · Replies 46 ·
Kinematics problem: Determine the velocity of this car during braking
- dbag123
- · Replies 2 ·
Why are there no force resolutions at ##30^0##?
- Benjamin_harsh
- · Replies 6 ·
David Morin's Rope around a Pole example
- BeyondBelief96
- · Replies 8 ·
Does Mutual Inductance Affect Voltage in an Open Circuit?
- Master1022
- · Replies 1 ·
Motion of a rod hinged at one end
- poseidon721
- · Replies 1 ·
Intensity and power question (weird)
- bonbon22
- · Replies 7 ·
Force Free Motion of a Symmetric Top: Direction of phi dot
- kennethellen
- · Replies 1 ·
Ocr practical paper question on concept
- bonbon22
- · Replies 3 ·
How to stop a steering wheel using an electric motor?
- Atem
- · Replies 11 ·
Why is balancing a dumbbell at arm's length harder than holding it at the chest?
- brotherbobby
- · Replies 9 ·
Calculate the tension in a rope attached to a ball in circular motion
- MattDutra123
- · Replies 8 ·
Intensity of sound, power output
- jangchen
- · Replies 6 ·
Half-life problem with unknown initial sample amount
- amazingphysics2255
- · Replies 27 ·
Binary star wavelength shift from amplitude not peak-to-peak
- bonbon22
- · Replies 1 ·
Why does net force equal mass times acceleration?
- Benjamin_harsh
- · Replies 6 ·
A ladder against a wall problem
- JessicaHelena
- · Replies 5 ·
How can a differential pressure transmitter be labeled FT, PT, or LT?
- teafour
- · Replies 1 ·
Doppler effect -- find the frequency
- jangchen
- · Replies 9 ·
General Physics I Question: Moment of Inertia Problem Difficulty
- i_love_space_and_eng
- · Replies 2 ·
Why do nuclei form in the first place if the protons repel each other?
- flintstones
- · Replies 2 ·
The Indeterminacy of Problems with Multiple Friction Interfaces
- brotherbobby
- · Replies 26 ·
Rotating with slipping to rotating without slipping?
- nomnom123
- · Replies 3 ·
Combustion of an explosive liquid bubble
- DarkSkinDude
- · Replies 2 ·
Large discrepancy in calculated height from gravity formula
- keir
- · Replies 9 ·
Is this the proper method to find net force?
- Kmcquiggan
- · Replies 8 ·
State what type of reaction this is
- amazingphysics2255
- · Replies 19 ·
Astrophysics question: Wire mesh radio telescope antenna
- bonbon22
- · Replies 1 ·
Time constant question in an AQA exam paper
- bonbon22
- · Replies 9 ·
I have a problem regarding a momentum related question.
- HazyMan
- · Replies 7 ·
Velocity of COM after collision
- Mooy
- · Replies 3 ·
Finding out the mass of gas transferred outside of a room
- Taylan
- · Replies 8 ·
Why air resistance has less force than gravitation force in free fall?
- Benjamin_harsh
- · Replies 4 ·
What is the moment for this diagram?
- Benjamin_harsh
- · Replies 4 ·
Where I am going wrong in summing moments for this diagram?
- Benjamin_harsh
- · Replies 5 ·
Why is moment ##F.S## instead of ##F.\frac{S}{2}## for this diagram?
- Benjamin_harsh
- · Replies 11 ·
What direction is the force acting at A in this diagram?
- Benjamin_harsh
- · Replies 12 ·
Why a car decelerates after releasing the gas pedal?
- vxr
- · Replies 3 ·
How to calculate acceleration in this Atwood's Machine?
- ArnavVarshney
- · Replies 4 ·
Calculate the mass defect of a carbon-12 nucleus
- amazingphysics2255
- · Replies 12 ·
What do questions based on the polygon law look like?
- Benjamin_harsh
- · Replies 1 ·
Area covered on Earth by geostationary satellites
- Ahsan Khan
- · Replies 2 ·
Is this strontium-90 nuclear decay equation correct?
- amazingphysics2255
- · Replies 11 ·
Does capacitor discharge through RC decay reduce amplifier noise?
- JackDixon
- · Replies 3 ·
Work done on test charge and electrostatic potential energy line integrals
- Master1022
- · Replies 31 ·
Compressible fluid through a narrow tube.
- JonNash
- · Replies 6 ·
Max Elongation of Mass-Spring System
- Moara
- · Replies 13 ·
Thermodynamics assignment help on icebergs and heat calculations
- connorx99
- · Replies 1 ·
Static equilibrium -- interpretation of forces
- Lone Wolf
- · Replies 10 ·
How can I determine the inclination degree? (visual binary)
- arcTomato
- · Replies 10 ·
Velocity of ball rolling down ramp
- NathanLeduc1
- · Replies 16 ·
How do I find rotational inertia for multiple disks attached to a rod?
- Riman643
- · Replies 8 ·
Force Diagrams for Sliding Block on Inclined Plane
- opus
- · Replies 12 ·
How can we determine the distance to the Galactic center?
- arcTomato
- · Replies 2 ·
Acceleration of two Objects after Collision
- Riman643
- · Replies 13 ·
Heat transfer to solution per litre
- rwooduk
- · Replies 2 ·
Why ##3.cos 60^0## is added to 4?
- Benjamin_harsh
- · Replies 28 ·
Coefficient of friction for constant velocity given a constant force
- kb_
- · Replies 2 ·
Frequency of sound in an open-open tube
- NP04
- · Replies 4 ·
SUVAT equations + two balls dropped at different times
- trew
- · Replies 1 ·
Direction of the induced current from an OCR paper -- concept question
- bonbon22
- · Replies 9 ·
Nuclear Reaction - How to determine variables as much as possible
- Chris89
- · Replies 1 ·
Equating two formulas for root-mean-square velocity
- JC2000
- · Replies 2 ·
Extra speed necessary to orbit at 970 km
- Pochen Liu
- · Replies 8 ·
How negative sign appeared out of nowhere?
- Benjamin_harsh
- · Replies 1 ·
Velocity of a slider immediately before impact
- TaylorHoward21
- · Replies 2 ·
What does the ε₀ symbol represent in electrostatics?
- NP04
- · Replies 2 ·
Work and Internal Energy for Adiabatic Processes
- JC2000
- · Replies 4 ·
Calculating Work and Velocity on a Water Slide
- vxr
- · Replies 6 ·
How to calculate Resistors in a circuit ?
- Vantom
- · Replies 12 ·
How to calculate the time required to open a valve to inflate a balloon?
- Josh Humphries
- · Replies 2 ·
Complex impedance and phase angle of a circuit
- Pierson5
- · Replies 24 ·
Why does the voltage across a capacitor start from zero and then start rising?
- Eucliwood
- · Replies 17 ·
How Fx = F(4/5) in this diagram?
- Benjamin_harsh
- · Replies 4 ·
Vibrations: A momentum impulse starts a mass into oscillatory motion
- Zamarripa
- · Replies 4 ·
Understanding resonance in a spring
- Pochen Liu
- · Replies 1 ·
Finding Angular Speed and the Change in Kinetic Energy
- dream4supreme
- · Replies 1 ·
Calorimetry Lab Analysis (predict specific heat of unknown metal)
- Wubblyboofus
- · Replies 54 ·
Angular Momentum in an Inelastic Collision
- NP04
- · Replies 4 ·
Why Do I Need to Sum All the Torques Along the Radius for Calculating Torque?
- EEristavi
- · Replies 2 ·
Choosing the right law of forces for magnitude and direction
- Benjamin_harsh
- · Replies 12 ·
Quadratic equation for drag race: car and motorcycle passing times
- Selectron09
- · Replies 20 ·
Center of Mass of acceleration and velocity
- Riman643
- · Replies 10 ·
Circular Motion Question: Change in Vector Angular Velocity
- e-pie
- · Replies 3 ·
Converting arcseconds to parsecs for the semimajor axis
- arcTomato
- · Replies 9 ·
What's Wrong with Energy Argument in Vertical Spring-Mass System?
- waqar
- · Replies 4 ·
Voltmeter problem from (OCR paper) multiple choice
- bonbon22
- · Replies 7 ·
What are the steps for calculating the center of mass of this object?
- Pochen Liu
- · Replies 9 ·
How to reduce shear stress in a beam
- alexteplyaxins
- · Replies 4 ·
Why add 180° when angle components are negative
- Benjamin_harsh
- · Replies 7 ·
What is the momentum of a girl jumping into a boat?
- vxr
- · Replies 7 ·
Why does the mark scheme consider the boy and box on the same side of R?
- trew
- · Replies 3 ·
Why is the vertical hinge reaction Tsin60-15g?
- Svelte1
- · Replies 3 ·
How Can Visualizing Magnetic Forces on Current Enhance Understanding?
- fight_club_alum
- · Replies 9 ·
An electron is placed at Point P, Calculate the Potential Energy
- aaika
- · Replies 8 ·
What is the total distance traveled by a bullet fragment after an explosion?
- Riman643
- · Replies 13 ·
How to find the velocity of a wave in simple harmonic motion given time
- MattDutra123
- · Replies 3 ·