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 can the dynamics of falling balls be analyzed using equations of motion?
- twofish
- · Replies 4 ·
Net Displacement of Element on String at Crossing Pulses
- Husker70
- · Replies 1 ·
Is More Work Done By Lifting an Object Diagonally or Straight Up?
- Morhas
- · Replies 9 ·
Finding the moment arm for a force
- mathdude88
- · Replies 1 ·
Understanding Centripetal Net Force in Circular Motion
- keemosabi
- · Replies 4 ·
Force and torque when lifting a couch with the Simpsons on it
- shimizua
- · Replies 4 ·
What are the Unknowns in a RLC Circuit with Resonance Frequency and Impedance?
- zakaqel
- · Replies 8 ·
Projectile Motion of half court basketball shot
- halo9909
- · Replies 12 ·
Solving Entropy Change for 0.7 kg of Water in 12 Minutes
- pmg
- · Replies 4 ·
Satellite Slingshot manoeuvre question
- Crosshash
- · Replies 1 ·
Uniform Circular Motion Question
- Gigabytes
- · Replies 1 ·
Calculating Acceleration with Force and Mass
- saychanh
- · Replies 2 ·
Newton's Second Law-Pulley problem
- Precursor
- · Replies 11 ·
Understanding Angular Momentum Conservation
- mathdude88
- · Replies 8 ·
Train at constant acceleration between two velocity points
- dd12
- · Replies 3 ·
Moment of inertia flywheel mass problem
- bowma166
- · Replies 7 ·
Rate of energy conversion when recharging a battery with internal resistance
- dimpledur
- · Replies 6 ·
Where does this energy come from?
- cali_sk8er205
- · Replies 1 ·
Rotation problem: which would stop first?
- Misako
- · Replies 2 ·
Projectile motion from elevator with horizontal throw
- halo9909
- · Replies 3 ·
Definition of electric field dE due to a small charge dQ
- twotaileddemon
- · Replies 2 ·
Projectile time left in basketball
- halo9909
- · Replies 3 ·
The lowest centre of mass while filling a cup of water?
- Aihara
- · Replies 3 ·
Calculating work done on a truck by friction when a truck is pushing a car
- kristy hardy
- · Replies 4 ·
Calculating Average Force in a Car Collision
- ScullyX51
- · Replies 2 ·
How Loud Is a Whisper at 3.5 Meters?
- kristibella
- · Replies 1 ·
Can Physics Equations Help Solve Real-Life Motion Problems?
- Tim P
- · Replies 6 ·
What is the average acceleration?
- InSpiRatioNy
- · Replies 1 ·
Circular and simple harmonic motion
- AcidicVision
- · Replies 5 ·
What Are the Units of Constants c and Fo in the Equation Fv = Fo * sin(cx)?
- theneedtoknow
- · Replies 6 ·
Traverse E wave travel Time on wires
- Husker70
- · Replies 1 ·
Collision of particles (relativity)
- Frillth
- · Replies 1 ·
Is Work Path Dependent with a Zero Total Displacement?
- fiziksfun
- · Replies 1 ·
Solve Raindrop Problem: Determine Time to Reach 63% Terminal Velocity
- siwik39
- · Replies 2 ·
Acceleration, Velocity and distance
- Oblivion77
- · Replies 5 ·
Finding R and L values when current lags voltage by 30°
- zakaqel
- · Replies 2 ·
Heavy Pulley / Conservation of Mechanical Energy
- danrochester
- · Replies 4 ·
Difference between Newton's first and second law
- alpha372
- · Replies 4 ·
Magnetic Flux, Equator and flying bullets
- TFM
- · Replies 10 ·
Deriving an equation for displacement and acceleration (given velocity)
- southernbelle
- · Replies 5 ·
How Does Force Affect Velocity in a One-Dimensional System?
- brittkub1291
- · Replies 1 ·
How Does Buoyancy Affect a Bubble's Force as It Sinks?
- Tom59593
- · Replies 1 ·
How to Calculate Kinetic Energy Relative to Center of Mass?
- lebprince
- · Replies 1 ·
Circuit/Mechanical oscillator analogy
- jdstokes
- · Replies 1 ·
Torque on Supply Reel in Cassette Deck Playback
- xlaserx7
- · Replies 1 ·
How Does Torque Affect Foot Bones?
- davidjkuhr
- · Replies 1 ·
What Is the Velocity of the 3 kg Fragment After Explosion?
- blayman5
- · Replies 1 ·
How Does Torque Relate to Different Types of Acceleration?
- saltine
- · Replies 1 ·
Circular motion vector problem
- devanlevin
- · Replies 1 ·
Self Inductance of a Coil: Why Not 1/2?
- jaejoon89
- · Replies 1 ·
Tension in a simple pendulum at different angles
- lmlgrey
- · Replies 1 ·
Centripetal Force, very simple.
- nothing4me
- · Replies 1 ·
Net External Force in a Direction
- Smiley.Teddy
- · Replies 1 ·
How Can Angular Momentum Principles Solve Ice Skater and Rotating Disk Problems?
- jcumby
- · Replies 1 ·
A few questions relating to the cross product
- Spiffy
- · Replies 1 ·
Rate magnitude of vertical component
- hulahoop09
- · Replies 1 ·
I need to to find the moment of inertia for the system
- afcwestwarrior
- · Replies 1 ·
Completely Inelastic Collision Question
- Inertialforce
- · Replies 1 ·
Specific Latent Heat of Fusion problem
- 9giddjl
- · Replies 2 ·
Spring problem-perpendicular force
- racast5
- · Replies 7 ·
Work done by a Spring Force question
- brittkub1291
- · Replies 17 ·
Rotational Kinematics - Cylinder down a slope.
- CaptainSFS
- · Replies 4 ·
Calculating the voltage over a resistance with and without voltmetre
- OldSnake
- · Replies 4 ·
Conceptual problem: Finding gravitational KE
- grantP
- · Replies 2 ·
Maximum induced emf in 40-turn coil around 200-turn solenoid
- bcjochim07
- · Replies 2 ·
How many rocks/min to mantain a constant speed
- tironci
- · Replies 1 ·
Finding velocity and force from position equation s = 4t - 4t²
- Killvenom
- · Replies 2 ·
Why do Satellites Orbit Earth at the Equator?
- phys1618
- · Replies 5 ·
What Causes the Difference Between Calculated and Experimental Acceleration?
- Ninjarzz
- · Replies 3 ·
Help with Forces - Get Answers & Diagrams for Net Force, Friction, Inclines
- austin1250
- · Replies 1 ·
Finding dB1/dt and dB2/dt from emf vs R² graph for concentric circles
- MikeSSSS
- · Replies 2 ·
Calculating Helium Vrms and Average KE at 5K
- mastiffcacher
- · Replies 2 ·
What is the scale reading when the block starts to slide down the incline?
- mjolnir80
- · Replies 3 ·
DeLorean Acceleration in Back to the Future III
- Smeagol3
- · Replies 1 ·
Solve the Difference in Calculated and Experimental Acceleration
- Ninjarzz
- · Replies 1 ·
Surface charge induced in conductor by point charge
- jdstokes
- · Replies 17 ·
Force needed to tip a square box by pushing at center height
- ruggler
- · Replies 8 ·
How Is Work Calculated in a Point-Particle System for a Sprinting Runner?
- lebprince
- · Replies 1 ·
Newton's Law's Problem (Contact Force)
- certainlynot5
- · Replies 5 ·
Potential Difference Across Resistor (RC Circuit)?
- grouchy
- · Replies 1 ·
How Is Net Torque Calculated on a Rotating Sphere?
- mathdude88
- · Replies 1 ·
How Long Does Sound Travel Through Water and Copper?
- madd_bm
- · Replies 2 ·
Nuclear physics and radio activity
- venky78666
- · Replies 1 ·
Rotating masses on a rod: kinetic energy and forces
- Kudo Shinichi
- · Replies 5 ·
Finding velocity given change in potential
- Xender
- · Replies 2 ·
Moment of inertia - disk - finding dm
- O011235813
- · Replies 2 ·
How Do You Calculate the Correct Resistor Values for a Simple Voltage Regulator?
- bengaltiger14
- · Replies 1 ·
Linear Speed of a rigid rotating object
- mathdude88
- · Replies 1 ·
How Does Newton's Third Law Apply in a Frictionless Two-Block System?
- ScullyX51
- · Replies 1 ·
Charge to Mass Ratio difference between Electrons and Protons.
- sdensmore
- · Replies 2 ·
Balancing a cylinder on an incline with a mag. field
- bcjochim07
- · Replies 2 ·
How Do You Solve for tanB in an Elastic Collision Problem?
- Welshy
- · Replies 6 ·
How Many Significant Figures for Time and Mass Calculations?
- helpmedude
- · Replies 1 ·
Energy of simple harmonic oscillator
- clemente
- · Replies 2 ·
Finding particle one's final velocity in inelastic collision
- jheld
- · Replies 1 ·
Finding net torque from two forces applied to a rod
- cece
- · Replies 8 ·
Finding location of nodes and antinodes.
- blueskadoo42
- · Replies 15 ·
Friction force on a 5 kg mass hanging on a string between two poles
- darkSun
- · Replies 5 ·
How Do You Solve These Basic Physics Problems on Force and Energy?
- nns91
- · Replies 9 ·
How Do You Calculate Sound Intensity and Power from Decibels?
- dislocated_ta
- · Replies 1 ·