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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Calculating Volume Change of a Partially Inflated Yoga Ball
- lalahelp
- · Replies 2 ·
Calculate the output voltage of the circuit
- damien88
- · Replies 6 ·
Satellite Orbiting around the Earth (gravitational fields)
- HarleyM
- · Replies 2 ·
Wavelength Speed Question
- jemjabella42
- · Replies 3 ·
Cross section of a stream flowing from a hole
- rbwang1225
- · Replies 1 ·
What Are the Torques on a Rectangular Plate in Equilibrium?
- zezima1
- · Replies 2 ·
Finding final displacement: 5 blocks at 53 degrees E of N or N of E?
- billybobay
- · Replies 4 ·
Gravitational Potential of Scooped Sphere System
- devvaibhav
- · Replies 15 ·
Charged particle attatched to spring.Find the period of oscillation?
- humanist rho
- · Replies 1 ·
Finding Momentum of a fragment after explosion
- Serendipitydo
- · Replies 2 ·
What is the Force on a Proton in a 0.5 T Magnetic Field?
- bobsmith76
- · Replies 1 ·
The mass of the ball is m, and the length of the string is L
- rbwang1225
- · Replies 1 ·
Oscillating mass on a spring - non-constant mass
- Nivlac2425
- · Replies 2 ·
Finding the voltage of an oil droplet, Millikan's experiment
- bobsmith76
- · Replies 3 ·
Finding angle between vectors from dot and cross products
- mrowcow
- · Replies 7 ·
Finding the mass of a particle, when its charge is known
- bobsmith76
- · Replies 4 ·
When Does the Metal Ball Leave the Tray in a Vertical Spring System?
- Nivlac2425
- · Replies 6 ·
Deriving the torque formula for a current loop
- sweatpants
- · Replies 3 ·
Find acceleration on planet x given mass, time, height.
- chuck_stone
- · Replies 3 ·
Elastic Potential Energy and Energy Exchange
- Vegeance
- · Replies 2 ·
Calorimetrey Problem - Final Temperature of water
- forestmine
- · Replies 1 ·
Equilibrium, Torque and Tension
- zspdztzx
- · Replies 1 ·
The frequency(/time period) of oscillation for a 2 body spring system
- abelthayil
- · Replies 2 ·
A submarine sonar system sends a burst of sound with a frequency of
- k0k
- · Replies 2 ·
Horizontally Launched Projectiles
- corong1997
- · Replies 5 ·
Perpetual Motion (explain why it's impossible)
- TheLil'Turkey
- · Replies 14 ·
Electric field midway between two opposite point charges
- stonecoldgen
- · Replies 4 ·
Calculating Equivalent Forces in Statics
- Huumah
- · Replies 2 ·
Work/Energy Conservation Problem w/ Initial Velocity
- Bread Boy
- · Replies 2 ·
Fluid mechanics,wooden block in water and oil
- hannam
- · Replies 1 ·
Uncertainty with Equations Question
- AJDangles
- · Replies 13 ·
Propagation of error for acceleration from kinematics equation
- AJDangles
- · Replies 1 ·
Refraction of Incident Ray Through Water
- Dr. S
- · Replies 8 ·
Calculating distance of an electron moving between 2 plates
- Combine
- · Replies 2 ·
What is the efficiency of a pulley and how do we calculate it?
- Stano123
- · Replies 1 ·
Very Simple Work/Energy Pendulum Problem
- Bread Boy
- · Replies 7 ·
Specific heat (I'm not sure if it's capacity or latent)
- gabloammar
- · Replies 8 ·
Power Dissipated by a Lightbulb
- Sir Isaac
- · Replies 2 ·
Ideal gas - monatomic or diatomic?
- shyguy79
- · Replies 9 ·
PV Diagrams (Curve v. Straight)
- jaysonr
- · Replies 8 ·
Find the direction of vector R counterclockwise of the + x axis
- Mdhiggenz
- · Replies 1 ·
Trouble proving equivalence at limit
- boris.rarden
- · Replies 4 ·
Find the magniture of the vector using the figure below
- Mdhiggenz
- · Replies 3 ·
How Do You Set Up Equations to Find Currents in a Circuit?
- theuniverse
- · Replies 3 ·
What is the magnitude of the sum of the following vectors?
- Mdhiggenz
- · Replies 1 ·
Finding u and v from a graph of 1/u against 1/v
- lionely
- · Replies 1 ·
How can you find the rate of change of momentum?
- Synxervious
- · Replies 3 ·
Large Uncertainty Became Unsignificant After Calculations?
- xGary
- · Replies 2 ·
Total Mechanical Energy Problem
- Snape1830
- · Replies 3 ·
How Do You Calculate Electric Potential Energy with Given Charges and Distance?
- bobsmith76
- · Replies 2 ·
Net force calculation with opposing vertical forces
- Kinermatics
- · Replies 2 ·
Why does the rope accelerate if both teams pull with equal force?
- beowulf.geata
- · Replies 1 ·
Finding the pushing force on a 100kg trolley up a 30° incline
- Morker
- · Replies 1 ·
Thermal Expansion Aluminium Problem
- smashbrohamme
- · Replies 1 ·
Addition of Vectors using a scale diagram
- Obama
- · Replies 1 ·
How to derive the kinetic formula
- physphys
- · Replies 8 ·
Electric field of Continuous charge Distribution
- amninder15
- · Replies 1 ·
How Does Charge Density Affect Electric Field Calculations?
- Crusaderking1
- · Replies 2 ·
The magnitude of the vector difference , is closest to
- Mdhiggenz
- · Replies 1 ·
Launching a ball 1-4m with a stretched spring
- canada123
- · Replies 1 ·
Rectangular Disk with Circular Hole Period Question
- JohnnyCollins
- · Replies 5 ·
Crystal Growth - Czochralski technique, finding concen. of dopant after growth
- bmarson123
- · Replies 1 ·
Comparing 2.2 eV photon and electron energy, mass, speed, wavelength and momentum
- HarleyM
- · Replies 2 ·
Thermal radiation question. Please help me explain the theory
- madeeeeee
- · Replies 2 ·
Electromagnetic force and some trig
- bobsmith76
- · Replies 1 ·
Relationship of frequency and nodes/antinodes
- Jfxue
- · Replies 2 ·
The components of vector are given as follows
- Mdhiggenz
- · Replies 2 ·
Spring hinges on door what is the ideal angular velocity exerted
- zangetsuwes
- · Replies 1 ·
How can Lagrange Identity be used to prove a vector equation?
- Ahmedzica
- · Replies 1 ·
Formula speed of a ball end of curved ramp
- laxgirl
- · Replies 2 ·
Kinetic/Potential/Mechanical Energy Problems
- k0k
- · Replies 11 ·
Calculating the potential energy of a spring
- bobsmith76
- · Replies 6 ·
How sound waves detect faults in girders
- sgstudent
- · Replies 1 ·
What forces act on a metal ball between two charged spheres?
- sasuke07
- · Replies 8 ·
Stress, strain and modulus - log hung from 2 wires
- PirateFan308
- · Replies 2 ·
Charge distribution when teflon and aluminum rods touch then separate
- SMA777
- · Replies 4 ·
Acceleration Vector in Circular Motion
- mindarson
- · Replies 1 ·
Finding the Support and Ratio of Mass for a Horizontal Lead Brick on Cylinders
- cd80187
- · Replies 8 ·
Finding thermal equilibrium of hot iron placed in water
- forestmine
- · Replies 6 ·
Solving for Work in a Stressed Aluminum Wire: Figure 12-56 Example
- slydg895
- · Replies 3 ·
Relative Velocity (boat traveling across a river)
- commit3d
- · Replies 5 ·
Determining Viscosity of Oil Using a Dropped Ball Experiment
- getty102
- · Replies 5 ·
Does time period of SHM vary with frame(inertial and non inertial)?
- vkash
- · Replies 4 ·
Moment of inertia for door hinges
- DanicaK
- · Replies 3 ·
J Calculating Friction: Determining Energy Lost in Sled Ramp Descent
- bobsmith76
- · Replies 1 ·
Calculate the magnitude and direction of the net electric force
- crybllrd
- · Replies 2 ·
Calculate the R-value of the stack of materials
- ninaw21
- · Replies 12 ·
Pulley Efficiency Problem (How much rope must be pulled)?
- glambeth
- · Replies 1 ·
Is there is any change in time period if it is done inside accelerating lift?
- vkash
- · Replies 3 ·
Equation of motion canoe stroke
- The-alexandra
- · Replies 9 ·
How Does Lenz's Law Determine Current Direction in Moving Magnets and Solenoids?
- wordgames
- · Replies 1 ·
Calculate the Sound intensity level
- ninaw21
- · Replies 3 ·
How Does the Mass of the ISS Affect Its Orbital Motion?
- billybobay
- · Replies 3 ·
Solving Circular Motion Problems: Finding Acceleration and Force
- HiddenHope
- · Replies 4 ·
Derivation of angular frequency.
- Scintillation
- · Replies 1 ·
A bullet shot underwater given a velocity function
- getty102
- · Replies 4 ·
What is the speed of light in miles per hour using dimensional analysis?
- jemjabella42
- · Replies 4 ·
Calculate the maximum force required to accelerate the box
- charch
- · Replies 2 ·
Parallel Circuits: Intensity of Bulbs When Removing One
- snash1057
- · Replies 2 ·
Shearing Modulus/Shearing Strength
- Myung
- · Replies 5 ·