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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Newton's Second Law for a Single Force
- djester555
- · Replies 2 ·
Finding speed from horizontal and vertical velocity components
- Savannah
- · Replies 3 ·
Finding the contact force on the patella from two tendons
- DavidDishere
- · Replies 2 ·
What is the average force exerted on a 0.54kg ball that falls and rebounds?
- 312213
- · Replies 4 ·
How Does a Car's Acceleration Affect the Angle of a Hanging Air Freshener?
- waldvocm
- · Replies 5 ·
Calculating the coefficient of friction
- phyz
- · Replies 6 ·
How Do You Calculate the Force Needed to Pull a Box Up a Ramp at Constant Speed?
- swimchica93
- · Replies 6 ·
Bullet passing through wooden block on frictionless surface
- mmoadi
- · Replies 6 ·
How Do You Calculate Frictional Force for Moving Boxes?
- vrobins1
- · Replies 1 ·
Magnitude of the Velocity- Projectile Problem
- haengbon
- · Replies 1 ·
How Far Does the Boat Move When Juliet Joins Romeo at the Rear?
- Chuck 86
- · Replies 1 ·
Maximum height of 3 kg object after 5.5 kg falls 4.5 m
- zomething
- · Replies 1 ·
Calculating y-Coord of Center of Mass in Unique Shape
- phsyics_197
- · Replies 1 ·
How Should Logs Be Arranged in a Wheelbarrow to Minimize Back Strain?
- camino
- · Replies 1 ·
Distance Traveled By A Car-Kinematics Problem
- haengbon
- · Replies 7 ·
What exactly is a resonance frequency?
- ChemIsHard
- · Replies 1 ·
RL circuit with parallel resistor at t = 0.224 s
- christianerik
- · Replies 1 ·
Where is the point where the Earth's gravity is cancelled by the moon?
- chantelkohl
- · Replies 1 ·
Conservation of momentum theoretical question
- i_heart_you
- · Replies 2 ·
Find current generated from photoelectric effect.
- lagwagon555
- · Replies 2 ·
Merry Go Round (Centripetal Force)
- Chandasouk
- · Replies 3 ·
Calculating Force in a Human Cannonball Act: How Is It Done?
- asianygoodnes
- · Replies 1 ·
What is the Missing Information in Determining Wind Speed and Direction?
- PhysicsMark
- · Replies 3 ·
Vector addition and subtraction with a diagram
- swimchica93
- · Replies 20 ·
Kinetic Energy - Spring Stiffness
- Kev1n
- · Replies 1 ·
Velocity of bullet fired from a gun
- Kev1n
- · Replies 1 ·
How to Find the Instantaneous Axis of Rotation?
- iitjee10
- · Replies 2 ·
How much TNT equals 1 gram of U-235 in energy?
- wilson_chem90
- · Replies 7 ·
Collision of Two Cars: Calculating Velocity
- VelvetRebel
- · Replies 1 ·
Flywheel Acceleration Time Calc: Solve for Time to Reach Max Speed
- paulsberardi
- · Replies 1 ·
Airplane heading to land due north with 100 km/h wind
- BrennMan
- · Replies 2 ·
Calculating Angular Speed of a Shaft with Given Angular Acceleration
- Chuck 86
- · Replies 4 ·
Rite away , might be losing my mind
- kaldso1
- · Replies 3 ·
Distance between two stones dropped 1.31 s apart
- black_hole
- · Replies 1 ·
When electrostatic force equals gravitational force between charged objects?
- LNCO
- · Replies 1 ·
What Is the Correct Calculation of Lift Force for an Ascending Helicopter?
- jrbillbrian
- · Replies 7 ·
Force applied at an angle to a box?
- Affie
- · Replies 2 ·
Artificial Gravity in a space station
- jacksonpeeble
- · Replies 7 ·
Calculating Forces on Boxcars in a Train: Newtons and Acceleration
- waldvocm
- · Replies 3 ·
Voltage in capacitor after switch has been closed
- sailork
- · Replies 4 ·
Worker walking on flatcar: how far does the flatcar move?
- ProjectileCow
- · Replies 5 ·
Distance to Moon from light travel time of 2.562 seconds
- wilson_chem90
- · Replies 4 ·
Tension in link B between train carriages
- struggling:(
- · Replies 4 ·
Elastic Collisions in One Dimension
- G-reg
- · Replies 3 ·
Calculating the induced emf in a solenoid, have worked on it, can't get answer
- piperj3
- · Replies 1 ·
Ball thrown a distance at an angle, looking for maximum height.
- chaospoodle
- · Replies 2 ·
Finding Mass of part of a block that explodes.
- mhsphysics10
- · Replies 1 ·
Resolving Forces for Periodic Motion in a Suitcase
- Angello90
- · Replies 3 ·
Mechanics problem - Serway/Jewett 4.61
- collectedsoul
- · Replies 8 ·
How Does a Box's Speed Change When Sliding Down a Frictionless Ramp?
- Footballer010
- · Replies 1 ·
Amperian loop encircling two current loops gives wrong sign
- exitwound
- · Replies 7 ·
Finding minimum angular speed? in rpms
- dubsydub14
- · Replies 1 ·
Rolling vs. Sliding: Which Ball Reaches Bottom Faster?
- Sockpirate
- · Replies 1 ·
Thermodynamics Question- Melting Temp
- jessedevin
- · Replies 1 ·
A child going down a slide with friction
- mmoadi
- · Replies 8 ·
Man on a plank- Center of Mass pb.
- Footballer010
- · Replies 2 ·
Block sliding on block with friction between them
- mc8569
- · Replies 3 ·
Finding a change in angular velocity, with out I equation
- Shepherd7
- · Replies 1 ·
Solving Static Equilibrium: Find D for Tension of 1200 N
- G-reg
- · Replies 2 ·
Accelerometer and Displacement
- makethings
- · Replies 7 ·
Work to pull a chain back onto a table using energy methods
- ssm11s
- · Replies 4 ·
Does Work in an Inclined System Only Occur in the Y Direction?
- Innuendo
- · Replies 2 ·
How Do You Solve the Supernode Equation Involving Node C?
- noname1
- · Replies 5 ·
Projectile Problem: Find "d" on 10° Incline
- James22
- · Replies 3 ·
Net force on falling apple with wind and gravity
- n9900229
- · Replies 3 ·
How Do You Calculate the Time and Speed of a Toy Car Falling Off a Table?
- merceb49
- · Replies 19 ·
How Do You Calculate Projectile Motion for a Toy Car and an Arrow?
- merceb49
- · Replies 9 ·
Why Is My Calculation of Magnetic Potential Energy Incorrect?
- exitwound
- · Replies 9 ·
Calculating Work: Piano Lowering 5m, 2500N Gravity, T1 1830N, T2 1295N
- indietro
- · Replies 2 ·
Static Equilibrium of pedestals
- G-reg
- · Replies 1 ·
Work on Moving a 186kg Refrigerator
- Jonathan Teas
- · Replies 1 ·
Which Path is Fastest for a Rolling Sphere: Straight Line or Curve?
- mid_bama
- · Replies 3 ·
Find the Normal Force of a box in an elevator cab
- ayesha91
- · Replies 3 ·
Battery Problem, Power delivered ,energy dissipated
- hitman0097
- · Replies 2 ·
Find center of mass using rotational equilibrium
- farleyknight
- · Replies 3 ·
What Is the Induced EMF in a Circular Coil at t = 5 s?
- Liketothink
- · Replies 5 ·
Solving for Tensions with Different Angles
- Paul_Bunyan
- · Replies 10 ·
How far will a car travel when decelerating from 60km/h to 10km/h in 2.0s?
- xcompulsion
- · Replies 7 ·
Why Is My Calculation of Lens Object Distance Incorrect?
- luap12
- · Replies 2 ·
How Far is the Third Interference Minimum in a Double Slit Experiment?
- wahsup13
- · Replies 3 ·
Falling monkeys (Projectile motion problem)
- Greywolfe1982
- · Replies 4 ·
Hydrogen-deuterium fusion reaction and kinetic energy release
- SpeedyKeeper
- · Replies 1 ·
A train that is momentarily at rest, Newton's Laws
- cloudage
- · Replies 3 ·
Derive the expression for the electric field
- amiv4
- · Replies 1 ·
What total energy transfers from this motor during this work?
- darkwolfe5
- · Replies 1 ·
Three stacked blocks w/ friction between sliding on frictionless floor
- Saladsamurai
- · Replies 3 ·
How do I calculate the force applied to a tennis ball when it is hit by Pete?
- jrbillbrian
- · Replies 4 ·
How to do error analysis in this lab on linear motion
- Binibini
- · Replies 1 ·
Distance Traveled During 5th Second of Coasting
- black_hole
- · Replies 6 ·
Finding coefficient of kinetic friction for 24 kg crate with 53 N force
- purplekisses
- · Replies 1 ·
What is the coefficient of kinetic friction and tension in this physics problem?
- kulai
- · Replies 9 ·
What is the Force Exerted Between a Car and Trailer During Acceleration?
- furiousd
- · Replies 2 ·
How Do You Calculate the Center of Mass for a Plate with a Circular Hole?
- heloudan
- · Replies 4 ·
Magnetic field due to current loop
- exitwound
- · Replies 8 ·
Finding Thevenin voltage without a known current
- noname1
- · Replies 2 ·
Find equivalent capacitance, charge, and energy for capacitors in series and parallel
- cristina045
- · Replies 3 ·
Calculating Kinetic Energy without Time: Is it Possible?
- kevfar
- · Replies 1 ·
Solving Gauss's Law: Charges on Shell Surfaces
- physicsnewb7
- · Replies 5 ·
Rocket launched at 53° with constant speed phase then crash
- esanoussi
- · Replies 3 ·
Caculating the decline angle of a swing
- mmoadi
- · Replies 2 ·