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 Does a Frictionless Piston Behave in a Vacuum-Sealed Cylinder?
- itr
- · Replies 1 ·
Solving 10 -2x = 90 - x: Find x Value
- Gringo123
- · Replies 1 ·
Rotating object angular velocity question
- pinnacleprouk
- · Replies 7 ·
How does the recoil of the nucleus affect the speed of the alpha particle?
- thebomb
- · Replies 18 ·
How Does a Bullet's Momentum Determine the Force Stopping It in a Tree Trunk?
- Ronaldo21
- · Replies 1 ·
Gravity earth's radius question
- physicshard22
- · Replies 1 ·
Can Relative Velocity Determine Bat's Speed Without Doppler Effect?
- mikhailpavel
- · Replies 3 ·
Mass of stars companion from radial velocity
- ChrisBaker8
- · Replies 9 ·
Projectiles and conservation of energy (water slide problem)
- wmmk
- · Replies 3 ·
Conserved Energy vs. Used Energy
- 1irishman
- · Replies 4 ·
Force between two current-carrying wires in a circuit
- dtchannell88
- · Replies 1 ·
Calculating work to overcome drag?
- sirfinklstin
- · Replies 9 ·
Calculating Momentum and Velocity in a Head-On Car Collision
- Jimbo113453
- · Replies 4 ·
Just got owned on this exam question
- anotherghost
- · Replies 2 ·
The relationship between Vav and Height of a ball rolling down a slope
- zzoldan
- · Replies 1 ·
Basic momentum and magnitude questions
- Ronaldo21
- · Replies 3 ·
Solving Density ρ Question: Δρ = -87x10-6ρ at 25ºC to -40ºC
- A_Munk3y
- · Replies 2 ·
Spring compression with friction gives negative solution
- jegues
- · Replies 8 ·
Calculating Kinetic Energy on an Inclined Ramp with Friction
- Dark Visitor
- · Replies 21 ·
Finding initial angular velocity from acceleration and displacement
- blaze33
- · Replies 4 ·
Block hanging from rubber cord: tension, length, and wave speed
- Keithkent09
- · Replies 10 ·
Total and individual momentum of child on bike
- Ronaldo21
- · Replies 11 ·
Is the Speed of Sound in Wind a Viable Topic for a Research Paper?
- jonmah
- · Replies 3 ·
How Does Wind Affect the Doppler Shift of Sound?
- e(ho0n3
- · Replies 8 ·
Sign error in potential difference for spherical capacitor
- tshafer
- · Replies 4 ·
Conservation of Momentum and Energy in Fisherman-Boat Interaction
- Ronaldo21
- · Replies 6 ·
Period of small oscillations for a sphere-rod pendulum
- joemama69
- · Replies 1 ·
Marble sliding outward on rotating disk due to centrifugal force
- johnchen25
- · Replies 7 ·
Converting angles in to degree to angles in radians
- tomsdubs
- · Replies 2 ·
How Does the Stiffness of an Interatomic Bond Affect Iron's Elasticity?
- clutch12
- · Replies 6 ·
Rope tension no friction question
- PearlyD
- · Replies 2 ·
Break white light into it's components
- Alkhimey
- · Replies 3 ·
Was Car A Speeding? Analyzing a Collision Using Physics Principles
- tealmarie2010
- · Replies 4 ·
Finding specific heat of metal cooled in water-filled container
- lilmul123
- · Replies 3 ·
How to Calculate Translational Kinetic Energy of a Gas Using Ideal Gas Law
- KsonGV
- · Replies 2 ·
Velocity of a block on an inclined plane with pulleys
- jamesweston0
- · Replies 26 ·
Why is the formula for potential energy in a spring 1/2(kd^2) instead of kd^2?
- sodr2
- · Replies 4 ·
How Is Energy Calculated in a Nuclear Fission Reaction?
- danok
- · Replies 1 ·
What Angle Allows a Right Angle Ruler to Hang in Equilibrium?
- joemama69
- · Replies 3 ·
Can you confirm a simple Physics Velocity Question?
- pinnacleprouk
- · Replies 1 ·
How Far Does a Block Compress a Spring on a Frictionless Surface?
- ice2morrow
- · Replies 1 ·
Period of Revolutions of a Planet
- shanklove
- · Replies 8 ·
Minimum speed for a 2.1m pendulum to reach horizontal and vertical positions
- Inkyspider
- · Replies 1 ·
Speed of sound from resonant frequencies in a 50cm tube
- MissB16
- · Replies 5 ·
Ratio of rms speeds of two isotopes
- Linus Pauling
- · Replies 1 ·
Mechanics - particle in a half cylinder
- Pagan Harpoon
- · Replies 15 ·
Mass of ice to warm a liquid - do I have it set up correctly?
- Linus Pauling
- · Replies 1 ·
Finding acceleration on a parabolic path y = ax²
- Drill
- · Replies 4 ·
How Is Lift Force Calculated for an Airplane?
- Jimkatz809
- · Replies 1 ·
How Is Power Calculated in a Conveyor Belt System?
- ReMa
- · Replies 1 ·
Pressure on a piston in a cylinder
- Jimkatz809
- · Replies 4 ·
What Is the Distance Ratio Based on Sound Intensity Levels?
- raindrops
- · Replies 3 ·
What is the maximum speed of a 4.00kg mass attached to a spring with k=20.0N/m?
- Gokuraku
- · Replies 2 ·
Estimating the total mass of the galaxy (using Kepler's Thid Law)
- Synchromesh
- · Replies 4 ·
How Is Velocity Expressed as a Function of Position with Given Power Input?
- e2e8
- · Replies 1 ·
Can I find acceleration and coefficient of friction with incomplete information?
- joeG215
- · Replies 2 ·
Calculate Momentum & Energy for 15 Metric Ton Train
- Ronaldo21
- · Replies 5 ·
Physics Superposition and Standing Waves (ch. 18)
- Keithkent09
- · Replies 11 ·
How to Calculate Water Velocity and Pressure in a Building's Plumbing System?
- Keithkent09
- · Replies 2 ·
Fluids - A lost shipping container is found resting on the ocean floor
- crono_
- · Replies 6 ·
Translational and Rotational Energy
- hatephysics
- · Replies 2 ·
Compton Scattering in Laymen's terms
- StephenP91
- · Replies 2 ·
Solving the Gravitational Problem: Rocket Speed at Great Distance from Earth"
- SELFMADE
- · Replies 1 ·
Understanding Significant Figures and Uncertainty in Calculations
- jordan123
- · Replies 2 ·
Simple Harmonic Motion and a Car
- stanli121
- · Replies 1 ·
Work-Energy: Finding Contact Force at Lowest Point
- johnchen25
- · Replies 2 ·
How Does a Venturi Meter Calculate Fluid Speed Using Bernoulli's Equation?
- Linus Pauling
- · Replies 2 ·
Conceptual Index of Refraction Question.
- fallen186
- · Replies 1 ·
Uncertainty Principle and minimum kinetic energy
- cwatki14
- · Replies 1 ·
Oscillation Frequency, Total Mechanical Energy, and Initial Speed
- KatlynEdwards
- · Replies 6 ·
Calculating Energy Required for Phase Change in an Ice Cube
- free-node-5
- · Replies 5 ·
How Long Must the Barge Be for a Safe Plane Landing?
- musicfan31
- · Replies 7 ·
What is the maximum linear velocity of a rolling flywheel on an incline?
- LBenson
- · Replies 4 ·
"Solving Light Problem with Wavelength 635 nm
- fallen186
- · Replies 1 ·
Which way does friction point on a rolling sphere?
- sjeddie
- · Replies 10 ·
What is the magnitude of force exerted on Venus by solar radiation?
- cwatki14
- · Replies 3 ·
How Do You Calculate Tension in a Hanging Cylinder with Rotational Kinematics?
- greenskyy
- · Replies 8 ·
Approximatly 5% of each exhaled breath is carbon dioxide
- matt_crouch
- · Replies 3 ·
Very simple gravity/time/distance travelled problem
- dkayuk
- · Replies 1 ·
Calculate the tension in the rod
- Dr.Wasim
- · Replies 4 ·
Simple Pendulum Problem this one's kinda tough
- cheechnchong
- · Replies 4 ·
How to Calculate the Effusion Rate of Oxygen from a Balloon?
- Zvaigzdute
- · Replies 1 ·
Doppler effect fire truck siren
- ryty
- · Replies 1 ·
Designing loops for electromagnet strength experiment
- Alieneater
- · Replies 3 ·
How to Calculate Heat Loss and Gain in a Melting Ice Scenario?
- cashellz77
- · Replies 4 ·
Banked Curve Problem: Find Radius with Friction Coefficients
- M1ZeN
- · Replies 3 ·
Solving Spring Slope Troubles w/ Frictionless Slope
- M1ZeN
- · Replies 1 ·
How Is the Spring Constant Calculated from Velocity and Compression Data?
- M1ZeN
- · Replies 1 ·
What current is flowing through the on/off switch?
- persian52
- · Replies 5 ·
Thinnest film for destructive interference of 660 nm red light
- pconn5
- · Replies 3 ·
Why does our cheeks get hot and red too
- 1/2"
- · Replies 4 ·
Weight change in rotating space station
- indie452
- · Replies 1 ·
Moment of Inertia of a Quarter Disc
- utsav55
- · Replies 2 ·
Thermal Equilibrium of Blocks In Contact -
- Heisenberg.
- · Replies 8 ·
Tossing a pebble to hit a window with only horizontal velocity
- kimmeh06
- · Replies 1 ·
Angular Momentum In A Helicopter
- godtripp
- · Replies 3 ·
Finding molecular count from pressure and temperature using ideal gas law
- lilmul123
- · Replies 4 ·
Neutron Stars and unbinding energy
- Minihoudini
- · Replies 1 ·