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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Gragging a board across surfaces with different frictions
- ph123
- · Replies 6 ·
Find Maximum Angle: Ball Hitting Pendulum String
- robbondo
- · Replies 3 ·
Power required to operate a ski tow
- ph123
- · Replies 3 ·
Electric Car Help: Calculating Horsepower Needed
- gamer6218
- · Replies 3 ·
Solve Light Polarization: Angles of Transmission Axis
- Dart82
- · Replies 2 ·
Force due to wind and rolling friction on van
- fruitl00p
- · Replies 4 ·
Electrostatics/Electroscope Correct Answers Feedback
- pugfug90
- · Replies 3 ·
What Is the Difference Between lbf and lbs in Terms of Newtons?
- bennychris2002
- · Replies 7 ·
Why does a floating balloon move backward when a car brakes?
- 21385
- · Replies 2 ·
Mean square radius uniformed charged sphere
- malawi_glenn
- · Replies 0 ·
Solve Current in Parallel Wires with Repulsion
- Touchme
- · Replies 1 ·
Momentum/Conservation of energy
- Danielle_6
- · Replies 1 ·
Why Are My Velocity Signs Incorrect in Momentum Problems?
- cipotilla
- · Replies 11 ·
Finding an Orthornomal Polarization?
- Noone1982
- · Replies 1 ·
Gravity, rotational speed. That kinda stuff.
- 3dsmax
- · Replies 7 ·
Projectile Motion Problem Solution: Ball Thrown from Building Edge
- Alain12345
- · Replies 1 ·
How Large Should Your Solar Panel Be to Power Your Home?
- deenuh20
- · Replies 4 ·
Calculating Power from 1800 N-m of Work Per Minute
- heliocentricprose
- · Replies 1 ·
How Is Induced EMF in a Moving Car Antenna Calculated?
- kmj9k
- · Replies 2 ·
Voltage and electric field in circuits
- proton
- · Replies 5 ·
Pump raising water 9m at 12m/s, finding power
- blackcat
- · Replies 4 ·
Merry-go-round with children: angular velocity after step-on
- bpw91284
- · Replies 4 ·
Kinetic Energy, Momentum, Projectile Motion ( A real stumper )
- xaer04
- · Replies 47 ·
Understanding Ampère's Law: How to Solve for Zero Current in a Closed Loop
- Gyroscope
- · Replies 2 ·
Block sliding on horizontal plane then up a 35° incline with friction
- nguyenn2
- · Replies 3 ·
Calculate Magnitude of Force, FAL, to Keep Ladder from Falling
- Swany
- · Replies 1 ·
Which Bench Will the Baseball Hit in the Stadium?
- f(x)
- · Replies 1 ·
Impulsive tension when two connected bodies become taut at 45 degrees
- Bucky
- · Replies 3 ·
Understanding Electric Potential
- Jide
- · Replies 3 ·
Why Do Reactions Differ in Problem P16.3 Compared to Standard Statics?
- cipotilla
- · Replies 1 ·
Maximum gravitational force between bowling and billiard balls
- RKNY
- · Replies 5 ·
Question concerning two bodies in space
- Simon316
- · Replies 3 ·
Velocity Components and Magnetic Force
- Soaring Crane
- · Replies 1 ·
Torque on perpendicular point dipoles using dipole field
- Kolahal Bhattacharya
- · Replies 3 ·
Angular and tangential acceleration of a falling stick
- Swany
- · Replies 1 ·
Rotating rod with two masses slowing due to friction
- choi626
- · Replies 5 ·
Two cylinders connected by cables: equilibrium and angular acceleration
- choi626
- · Replies 5 ·
What Angle Should the Rifle Be Aimed to Hit a Target 800m Away?
- Alex13
- · Replies 6 ·
Calculate the moment of inertia of this sphere
- Peach
- · Replies 7 ·
How Many Oxygen Molecules Collide with a Wall Per Second at Standard Pressure?
- rhochipi
- · Replies 1 ·
Newton's Law of Cooling of pizza
- nineshadows
- · Replies 5 ·
How Do Initial Pressures Compare in Two Heated Monatomic Gas Containers?
- Kites
- · Replies 1 ·
How Do Newton's Laws Explain the Motion of a Pushed Chair?
- CallingAllCars7
- · Replies 1 ·
Why Can't the Potential Integral Formula Be Used for Infinite Line Charges?
- brad sue
- · Replies 1 ·
How Do You Solve a Physics Problem Involving Forces and Motion?
- fishert16
- · Replies 3 ·
Using Newton's laws to solve problems
- juliesangelcleo
- · Replies 1 ·
Parallel/Series circuit theory/concepts
- pugfug90
- · Replies 5 ·
Calculate Water to Increase Cylinder Pressure from 50 to 150 PSI
- Lowdot
- · Replies 3 ·
What is the Final Velocity of the Astronaut After Throwing Away the Power Pack?
- vertex78
- · Replies 4 ·
Moving Particle and Different Fields
- Soaring Crane
- · Replies 7 ·
Finding a landing speed from spring constants
- euphtone06
- · Replies 9 ·
Calculating Velocity Components of Running Horses Using SOHCAHTOA
- junesmrithi
- · Replies 8 ·
Finding tension in horizontal cable B holding a 750N sign
- matadorqk
- · Replies 6 ·
Tossing Rocks on Frictionless Ice: Calculating Angle and Speed
- xXmarkXx
- · Replies 2 ·
Von Braun and contribution to space travel [no maths]
- f3nr15
- · Replies 1 ·
Calculating Monarch Butterfly Flight Time in Steady Wind Conditions
- junesmrithi
- · Replies 4 ·
Calculating Thrust Force of a Model Rocket
- xRadio
- · Replies 22 ·
Determining the Force Between Crates in Motion on a Concrete Floor
- luvsk8ing
- · Replies 10 ·
Flux in a Wire Loop w/ a Magnetic Field
- twotaileddemon
- · Replies 1 ·
Why Do Sparks Occur at the Head of an Electric Train?
- Kolahal Bhattacharya
- · Replies 3 ·
Effect of Increasing Wire Width on Resistance
- scotty0409
- · Replies 7 ·
Investigation: Factors Affecting Friction
- jvercetti
- · Replies 4 ·
Work done by force moving a particle
- norcal
- · Replies 1 ·
Relationship between voltage and the strength of an electromagnet?
- LiquidShadow
- · Replies 1 ·
Horizontal friction force on a lawn mower pushed at 45 degrees
- fishert16
- · Replies 1 ·
Work done on the object problem
- norcal
- · Replies 1 ·
Total Energy a 12V Battery Can Supply
- jesuslovesu
- · Replies 5 ·
Mass Defect: Pb-210 Nuclear Binding Energy
- MrDMD83
- · Replies 1 ·
Calculate Distance for Work Done by Force
- Jajo
- · Replies 13 ·
Finding resultant velocity when passenger walks east on northbound train
- junesmrithi
- · Replies 1 ·
How Do You Calculate Buoyant and Net Force on a Helium Balloon?
- kahl
- · Replies 1 ·
How Do You Calculate the Components of Weight on an Inclined Plane?
- junesmrithi
- · Replies 1 ·
2D gravity simulation with wobbling movement in game physics
- someoneYEAH!
- · Replies 1 ·
Solving an Unexpected Problem: Newton's Third Law
- gazepdapi1
- · Replies 5 ·
How Do Uniform Spherical Objects Affect Gravitational Force Calculation?
- duki
- · Replies 1 ·
Circular motion- slipping problem
- crossfacer
- · Replies 5 ·
Potential difference in non-conservative field along two paths
- brad sue
- · Replies 2 ·
Right Hand Rule and Magnetic Field
- Soaring Crane
- · Replies 5 ·
Problem involving circular movement and friction.
- anightlikethis
- · Replies 3 ·
Finding acceleration for two sprinters in a 100m race
- elton_fan
- · Replies 1 ·
Point Charges True and False problems
- Joseph Duchesne
- · Replies 1 ·
Conducting Wire Homework: Find J0 & B Inside Wire
- dtesselstrom
- · Replies 1 ·
What is the solution for the total resistance of the infinite ladder network?
- strangequark
- · Replies 3 ·
Finding Current in a Parallel Circuit with Multiple Resistors
- Ry122
- · Replies 1 ·
What is the history of the Medicina Radio Observatory?
- big man
- · Replies 1 ·
Atwood's Machine and incline plane combined.
- unicornrose
- · Replies 2 ·
How Long Does an Electron Take to Travel the Length of a High-Voltage Cable?
- AznBoi
- · Replies 1 ·
Intensity of Light by Polarizers
- deenuh20
- · Replies 5 ·
Electrical Energy and Power (Wrong because of decimal place)
- AznBoi
- · Replies 2 ·
Why Does Kirchoff's Loop Rule Apply to AC Circuits Using Complex Numbers?
- ougoah
- · Replies 1 ·
I need some really good questions
- harmeet_angel
- · Replies 1 ·
Momentum-impulse vs. rectilinear motion equations
- cipotilla
- · Replies 5 ·
Calculating Solar Water Heating Efficiency
- Solar
- · Replies 2 ·
Constant velocity of the mass center
- cipotilla
- · Replies 2 ·
Two spacecraft pushed apart by springs find original velocity
- Mitchtwitchita
- · Replies 6 ·
Solving Moving Crests Problem: Acceleration Zero @ .75m
- imranq
- · Replies 4 ·
Finding the angle that minimizes pulling force with friction
- Anood
- · Replies 23 ·
Force on a Current in a Magnetic Field
- dookedoo
- · Replies 2 ·
Nuclear Reaction for Alpha Particle Bombardment
- ghulamali
- · Replies 3 ·
Solve Pressure Problem: Lift 1000kg Car w/Hydraulic Pistons
- Lostcase
- · Replies 2 ·