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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Push a 22kg crate up a frictinless incline
- EmoryGirl
- · Replies 5 ·
How do you derive a Range prediction equation?
- genu
- · Replies 1 ·
Calc Kinetic Energy Lost in 8g Rubber Bullet Collision w/ 2.5kg Pendulum Bob
- mdwjun
- · Replies 1 ·
Can Friction Actually Speed Up an Object?
- jchojnac
- · Replies 1 ·
Projectile kinematics sticker for me
- triggerhorse
- · Replies 5 ·
Inelastic and elastic collision problems
- mdwjun
- · Replies 1 ·
Linera Expansion and heating from a stream of electrons
- TFM
- · Replies 17 ·
Maximum Stress on a wheel in motion
- Davieslad
- · Replies 1 ·
Maximum lines per meter for diffraction grating with 4 bright fringes per side
- dewdrop714
- · Replies 9 ·
Magnetic Field around a Bundle of Wires
- martellaj
- · Replies 2 ·
How Do You Calculate L and C in an RLC Circuit with Given Reactances?
- wayneinsane
- · Replies 5 ·
Solving Pendulum Question: Find Energy for Every Other Time Push
- kidsmoker
- · Replies 4 ·
Magnitude of the baseball's momentum?
- tnutty
- · Replies 5 ·
Finding ratio of 2 masses with acceleration
- unoriginal
- · Replies 3 ·
What is the axis and angle of rotation represented by this matrix?
- Gregg
- · Replies 6 ·
Speed of a sphere fired straight up, including quadratic air resistance
- soundbyte
- · Replies 1 ·
Why doesn't the space pod move when astronauts take their seats?
- xplosiv
- · Replies 6 ·
Solve Quarry Crane Problem: Find Rope 2 Tension
- yandao87
- · Replies 2 ·
Force of an electron with magnetic and electric fields and velocity
- shadowtracker
- · Replies 3 ·
Solve Rotation Problem: Wheel w/ 8 Spokes & 30cm Radius
- ChazyChazLive
- · Replies 2 ·
Calculating the magnitude of the force on an electron
- jaa72
- · Replies 1 ·
Change in internal energy as Tarzan falls and crouches
- guitarguy1
- · Replies 3 ·
How Does Doubling a Satellite's Mass Affect Its Orbital Speed and Stability?
- nns91
- · Replies 9 ·
Electricity and Magnetism questions Gauss's law, groundingetc.
- mmmboh
- · Replies 7 ·
Why Does Adding Harmonics Not Change the Period of the Fundamental Wave?
- johnj7
- · Replies 1 ·
Electric field at midpoint between 2.0 μC and -2.0 μC charges 10 cm apart
- seanmcgowan
- · Replies 22 ·
How much torque must the pin exert to keep the rod from rotating?
- nweis84
- · Replies 2 ·
Simple problem in calculating kinetic energy
- Laurlaur790
- · Replies 3 ·
Time dilation: period of a clock
- ephedyn
- · Replies 3 ·
Lenz's Law - Induced Magnetic Field/Current
- pujam3
- · Replies 1 ·
How Do You Calculate the Capacitance of a Capacitor?
- RedBarchetta
- · Replies 1 ·
Net force direction when a 6 kg particle has velocity v = 5ti + 4t²j
- soul5
- · Replies 1 ·
Max acceleration of car up ramp
- diffusion
- · Replies 17 ·
Electrical Potential Difference between two plates
- coolgirl
- · Replies 4 ·
Ultracapacitors - How long until the potential difference drops to 6V
- idk11
- · Replies 11 ·
How Much Work Is Needed to Stretch a Spring from 12 cm to 16 cm?
- magma_saber
- · Replies 1 ·
Speed bump question - Newton's laws
- feveroffate
- · Replies 5 ·
Two conceptual questions regarding Newton's laws
- feveroffate
- · Replies 9 ·
Acceleration with position given
- silentsaber
- · Replies 1 ·
Moving wires in magnetic field/force
- pujam3
- · Replies 1 ·
Momentum and work energy question
- nugget
- · Replies 3 ·
How Do You Calculate Voltage Drop in a Copper Wire?
- zyphriss2
- · Replies 1 ·
How Do You Solve These Complex Circuit Problems?
- clairez93
- · Replies 10 ·
How Does Friction Affect the Movement of a Book Up a Sloped Surface?
- vorcil
- · Replies 1 ·
How Do You Calculate Acceleration in a Free Fall Scenario?
- cire792
- · Replies 8 ·
Correct Formal Equation (Force due to a Spring)?
- PFStudent
- · Replies 9 ·
Questions about centripetal force
- sheenu32
- · Replies 5 ·
Calculate Electric Field at Origin 0 - $\lambda, \vartheta, R$
- afm-91
- · Replies 7 ·
Momentum Conservation in a Swapping Chair Scenario in a Spacecraft
- nugget
- · Replies 3 ·
Thermodynamics Entropy +2nd law problem
- physstudent1
- · Replies 4 ·
How Is the Electric Field Value Estimated in a CRT Deflection Scenario?
- DLK
- · Replies 1 ·
Determine the radius of the electron's orbit
- afm-91
- · Replies 25 ·
Show that terminal velocity equals
- wayneinsane
- · Replies 2 ·
Find position, magnitude, and direction
- wayneinsane
- · Replies 1 ·
How Do You Calculate Forces on a Car Traveling on a Banked Curve?
- nugget
- · Replies 1 ·
Determining the time it takes to reach half of a penny's terminal speed
- aquirk
- · Replies 1 ·
Car on an incline, friction related question
- nugget
- · Replies 3 ·
Piston-cylinder with air and nitrogen at different temperatures
- rock.freak667
- · Replies 1 ·
Interference fringes between rectangular pieces of glass
- Yroyathon
- · Replies 1 ·
What is the Light Intensity 3 Meters from the Bulb?
- dewdrop714
- · Replies 1 ·
Block and cylinder down an incline
- vladimir69
- · Replies 15 ·
How Much Ice Was Added to Cool the Lemonade?
- chops369
- · Replies 3 ·
Electric field from a line charge and spherical shell with Gauss's law
- mmmboh
- · Replies 10 ·
Moment of inertia and velocity of an object
- Silentblade
- · Replies 2 ·
Resultant and normal force of car on banked curve
- diffusion
- · Replies 12 ·
What Are the Initial Speeds of Two Cars After a Rear-End Collision?
- Nikolan
- · Replies 2 ·
Explosive Particle and momentum
- TFM
- · Replies 8 ·
Work and kinetic energy of stretched spring
- silentsaber
- · Replies 2 ·
Capacitors Connected, Disconnected, and Connected Again
- ---
- · Replies 1 ·
About Quarks - How Big is One?
- cAoCdDyC
- · Replies 1 ·
Displacment in simple harmonic motion after periodic time
- madah12
- · Replies 5 ·
Do Friction Forces Exist Between a Rod and a Shaggy Bowl?
- zasdfgbnm
- · Replies 1 ·
Find Optimum Angle of Launch: Calculate Velocity of Ball from Catapult
- monkeyguy31
- · Replies 4 ·
How Does Angular Momentum Affect Merry-Go-Round Speed?
- makeAwish
- · Replies 7 ·
Solving Argon's Turbine Expansion Problem
- zandbera
- · Replies 7 ·
HW Question, very simple. mass/gravity
- ek378996
- · Replies 3 ·
Calculate Refraction without Snell's Law?
- deadendcustom
- · Replies 7 ·
Why Doesn't Total Mechanical Work Equal the Sum of All Work Values?
- scuroangel66
- · Replies 2 ·
Building a hovercraft, having an issue with finding center of mass
- mxyplizk
- · Replies 1 ·
What Is the Tension in the Right End Cable of Scaffold 1?
- peaceandlove
- · Replies 1 ·
Finding tension between two blocks with friction using Newton's second law
- yunuscanemre
- · Replies 3 ·
Collisions+momentum+energy experiment
- Atlaπtis
- · Replies 8 ·
Finding work from force vector (2.7i + 3.2j) N and displacement
- silentsaber
- · Replies 3 ·
Energy transfer from x altitude to geosynchrous altitlude
- tnutty
- · Replies 15 ·
Two Blocks Sliding, Newtons 3rd
- myxomatosii
- · Replies 19 ·
Finding α for F=F1+F2+F3 to be Parallel to AB
- Dell
- · Replies 3 ·
Finding tension T4 in a five-rope pulley system
- myxomatosii
- · Replies 15 ·
Finding resistor R with voltage 5.0V and current 62mA
- Phoenixtears
- · Replies 6 ·
Calculating Time and Forces with Frictionless Surfaces
- zell_D
- · Replies 5 ·
Parallel-Plate Capacitor Question
- Lovergoo
- · Replies 1 ·
Finding friction force, normal force and mu for an object sliding down a ramp
- Lobber
- · Replies 4 ·
How do i find electric field of a sphere?
- Dell
- · Replies 5 ·
Maximum refractive index of liquid on 30-60-90 prism for total internal reflection
- marpple
- · Replies 28 ·
What is the Maximum Kinetic Energy of a Rotating Rigid Rod System?
- makeAwish
- · Replies 13 ·
Rank Magnitude of Torque for Forces A-F on Wrench
- makeAwish
- · Replies 1 ·
Normal Forces on a Ferris Wheel: Is the Top or Bottom Greater?
- Dannystu
- · Replies 5 ·
Max \omega for Stationary Bar on Prism 1 with Coeff. k < cot\alpha
- sArGe99
- · Replies 10 ·
Calculating Maximum Kinetic Energy in a Flywheel
- makeAwish
- · Replies 6 ·
Proof of Cosine law using vectors
- Andrewlorenzo
- · Replies 1 ·
Measuring the coefficient of friction
- Lobber
- · Replies 7 ·