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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Energy of an electron at 0.1c and when to consider relativity
- enricfemi
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What are the physics involved a in backflip?
- Complex302
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Determining the voltage of a power source
- nokia8650
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Find flux of CO2: convert (μmolCO2 (mol air)^-1) to (mgC)(m^-2 of ground hr^–1)
- mroldboy
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How to use H=mcΔT to find calories burned warming ice water
- Kyyliieee
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Binding energy per nucleon vs per electron in deuterium
- Cudi1
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Experimental Determination of Speed of Sound in Steel and Aluminum Rods
- momopeaches
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Pulley System- equation derivation
- hanlon
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Maximum compression of the spring
- aznboi855
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Horizontal distance travelled at given time
- TeamChuck
- · Replies 19 ·
Calculate Net Acceleration of Masses: F=ma, t=mg+ma, t=mg-ma
- fcb
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Direction of acceleration and velocity.
- Agent M27
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Total charge given potential V(r)
- Saraphim
- · Replies 9 ·
Compressional stress needed to prevent thermal expansion in steel beam
- pat666
- · Replies 7 ·
Gas bottle cooling and diver bubble expansion
- ar202
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Designing a Small Ski Lift: Facts and Assumptions
- web4deb
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Snell's law through three layers?
- MCATPhys
- · Replies 9 ·
Centripetal accelerations with two parallel axes - the Scrambler
- fezzik
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Current electricity and terminals of a cell
- jyothsna pb
- · Replies 11 ·
String Tension not sure on the answer i have.
- pat666
- · Replies 1 ·
What's the difference between emission and absorption?
- MCATPhys
- · Replies 1 ·
2D momentum question. I have my answers I just want to cheak with you guys
- brno17
- · Replies 11 ·
Force between two point charges 4 cm apart
- stobbz
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Finding Young's Modulus and Energy Stored in an Elastic Cord
- ElBell
- · Replies 19 ·
Solving Piston with String Homework: Volume, Pressure, Temperature & Work
- songoku
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Calculate Vertical Loop on Roller Coaster for 5G Limit
- r0ot
- · Replies 16 ·
Calculating the Vertical Height of Stairs Climbed by a 65.0 kg Student
- Brittykitty
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Maximum velocity and acceleration for 200mm oscillation at 6Hz
- daveiejbeer
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Where Should the Fulcrum Be Placed to Balance the Meter Stick?
- pat666
- · Replies 18 ·
Human Bone Youngs Modulus and Load Question
- ElBell
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Sketch the displacement of the string
- bon
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How do forces on an anchor change in a dynamic belay situation?
- rambo5330
- · Replies 14 ·
Vector problem, determining angle
- mickellowery
- · Replies 1 ·
Particle acceleration in electrical field
- jknight291
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How to work out this Acceleration
- koyabr
- · Replies 2 ·
Thermal Expansion of a copper sphere
- ElBell
- · Replies 7 ·
Minimum black hole mass to survive tidal forces at event horizon
- cepheid
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Work required to move capacitor plates
- Frostfire
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Why Is the Mechanical Energy of a Satellite Negative?
- songoku
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What do A, B, and C represent in the kinematic equation Y = At² + Bt + C?
- mlostrac
- · Replies 17 ·
How Does a Mass Move on a Frictional Incline After a Spring Release?
- Kavinson22
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How Far Did the Stuntwoman Fall Based on Doppler Shift Analysis?
- jwbehm
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How Does a Charged Particle Behave in a Magnetic Field?
- BruceEffect
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Answer Kinetic Energy Questions About an Asteroid Moving in Space
- sponsoredwalk
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Kid on roller blades pushed from wall with friction
- koonts
- · Replies 6 ·
Centripetal acceleration on Earth
- daysrunaway
- · Replies 26 ·
Solving a System of ODEs in Mass-Spring Dynamics
- bon
- · Replies 1 ·
Work Energy Problem Homework: Find v'B, W & in eV
- Mirth
- · Replies 1 ·
Finding the Angle of Incidence for Light Inside a Prism
- MCATPhys
- · Replies 1 ·
Proof of fundamental Poisson-brackets
- substance90
- · Replies 12 ·
Finding optimal kick angle for soccer ball using projectile motion
- Bmxican
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Find Initial Velocity: Time = 2.58s, Distance = 9.87m
- Jillypilly9
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Centripetal force or escape velocity?
- daysrunaway
- · Replies 2 ·
Angle of Inclination of Line in Vector Equation
- Cuisine123
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How Can I Easily Remember IGCSE Formulae?
- Cheesus128
- · Replies 4 ·
Roller Coaster Physics and Energy
- sromick
- · Replies 19 ·
Electric Field of Equilateral Triangle of Point Charges
- SD2014
- · Replies 2 ·
Bungee Jump: 65 kg, 11m Rope, 36m Fall
- getalifebaby
- · Replies 5 ·
How Do You Calculate Image Distance and Magnification for a Camera Lens?
- ZedCar
- · Replies 8 ·
What is the centripetal force acting on a truck going around a circular path?
- physics(L)10
- · Replies 11 ·
CRT High Voltage: Why Does It Need It?
- doc.madani
- · Replies 3 ·
Wave travel time on string supporting a block on incline
- jwbehm
- · Replies 8 ·
Finding resistor and inductor values from DC and AC measurements
- Dita
- · Replies 7 ·
Coefficient of Friction / Speed on incline.
- NoobertNoClue
- · Replies 3 ·
Potential Difference and spark plug
- CFrazzle
- · Replies 1 ·
How Much Charge Moves a Block from 0.3m to 0.4m?
- getalifebaby
- · Replies 1 ·
What is the minimum radius for safe circular flight?
- DJB1991
- · Replies 11 ·
Electric Flux Entering Cone of Radius r and Height h
- jyothsna pb
- · Replies 11 ·
Coefficient of Static Friction error (Lab)
- mlostrac
- · Replies 6 ·
Force, Velocity, and Ramp Problem?
- cheerspens
- · Replies 14 ·
How Fast Will the Ball Move at Point A After the String Breaks?
- cheerspens
- · Replies 5 ·
How Does a Refrigerator Affect Room Temperature Over Time?
- irycio
- · Replies 1 ·
How High Will Block A Rise After Sudden Platform Stop?
- cheerspens
- · Replies 9 ·
Average power output of machine
- Mar17
- · Replies 2 ·
Kinetic and Potential Energy of Baseball Graphing Question
- 1man
- · Replies 2 ·
Can You Set a Swing Going with 33 ft/s?
- lisa1234
- · Replies 4 ·
The generalization of Newton's 2nd Law to apply to variable mass systems
- sedaw
- · Replies 6 ·
Calculating the Direction of a Block's Travel from Multiple Forces
- MCATPhys
- · Replies 8 ·
Circular Motion/Conservation of energy problem
- ahsanxr
- · Replies 5 ·
Diffraction Grating Maximum Order
- silence98
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Minimum diameter fluid dynamics
- pat666
- · Replies 5 ·
Why Is My Calculation of Maximum Stretch in Simple Harmonic Motion Incorrect?
- fishingspree2
- · Replies 17 ·
Calculate 1st 3 Energy Levels for Electron in Quantum Well
- ryukyu
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A car is slowing down at a constant pace
- Avathacis
- · Replies 14 ·
Solving Projectile Motion: Calculating Initial Velocity with Known Variables
- Sundaze
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Difference between orbits and orbitals in atomic models
- Cudi1
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Centripetal acceleration at equator due to Earth's rotation
- physics(L)10
- · Replies 6 ·
How do electric and magnetic waves affect each other?
- MCATPhys
- · Replies 1 ·
What Is the Minimum Bend Radius for a Car Given Frictional Constraints?
- fcb
- · Replies 12 ·
Coefficient of friction (static and kinetic)
- HALPiEExx3
- · Replies 2 ·
Rotational Dynamics - moment of inertia finding
- pat666
- · Replies 3 ·
How can a 4x4 matrix be a Lorentz transformation and what are its properties?
- astoria
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How Can You Calculate Total Distance Traveled Without Integration?
- Mola
- · Replies 13 ·
Orbital radius vs period question
- cheeselover87
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Projectile Motion of a Shot Problem
- hanlon
- · Replies 8 ·
How Do You Solve Projectile Motion Problems in Physics?
- patpatboy2
- · Replies 4 ·
What is the Significance of the Y-Intercept in the Graph for Planck's Constant?
- Cudi1
- · Replies 17 ·
Calculate Thermal Power Output of Electric Furnace
- Windseaker
- · Replies 1 ·
Net Force on a Sled: 17.7 m/s^2 at 68.5°
- MCATPhys
- · Replies 3 ·
Solve Physics Homework: Bunjee Jump Question
- PhysicsTurkey
- · Replies 2 ·