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 Tension Vary Along a Rotating Rod?
- f(x)
- · Replies 6 ·
What is the speed of the discus at release?
- mastiffcacher
- · Replies 3 ·
Calculating Energy Ratio (Ef/Ei) for Earth's System
- jbgibson
- · Replies 2 ·
Spring / constant applied force question
- kennien
- · Replies 1 ·
Work Done without using the Conservation of Energy
- veronicak5678
- · Replies 11 ·
Work Done by Father on Girl's Sled Up Hill
- colts2775
- · Replies 1 ·
Helicopter accelerates while liftin what are the forces' magnitudes?
- Natali
- · Replies 1 ·
Newton's Laws: Sharp vs. Dull Knives
- tornzaer
- · Replies 1 ·
Findin buckets' tension when there are two strings n two buckets
- Natali
- · Replies 1 ·
How Does a Pulley System Affect the Force Exerted by a Table on a Box?
- Natali
- · Replies 1 ·
Momentum - Baseball Homework: Average Force, Direction
- tiggrulz13
- · Replies 7 ·
Block sliding down an inclined plain with gravity
- mcnegron90
- · Replies 1 ·
Lens and Focal Length Practice Problems
- Suavez
- · Replies 9 ·
Tennis Ball Drop II: Find Force Exerted on Floor
- PhysicslyDSBL
- · Replies 2 ·
Calculate the Pressures of H2 and He: Are answers correct?
- blackjack18
- · Replies 1 ·
Calculate Collector Current w/ Emitter @ 100mA - Transistor Switch
- Jason7fd
- · Replies 5 ·
Two Blocks with rope and Pulley on Inclined Plane
- Dahaka14
- · Replies 3 ·
Work Energy Theorem Loop-The-Loop problem
- Awwnutz
- · Replies 15 ·
Bullet shot into pendulum - conservation of energy
- itryphysics
- · Replies 2 ·
Finding stopping time and distance for a braking vehicle
- ajayespinoza
- · Replies 1 ·
Average velocity of a decelerating vehicle over 18 ft
- ajayespinoza
- · Replies 1 ·
Block pulled up incline, slides down, compresses spring
- r34racer01
- · Replies 7 ·
Why Does the Scale Show 76 kg in the Elevator?
- drewdiddy
- · Replies 1 ·
UPS man pushes boxes up a ramp problem
- egrus8
- · Replies 1 ·
Pressure and Density: Force Increase on Eardrum in 10-Story Building
- w11205
- · Replies 1 ·
Truck and car collide, calculate magnitude of force on car from the truck
- evan b
- · Replies 1 ·
Block, Cart, and Pulley Question
- r34racer01
- · Replies 12 ·
Coefficient of sliding friction for car braking on ice
- halo9909
- · Replies 1 ·
Deriving velocty with drag equation
- M4573R
- · Replies 1 ·
Projectile and acceleration of gravity
- armoredfury16
- · Replies 1 ·
Relative Velocity of a Helicopter
- vsharma88
- · Replies 1 ·
Finding spring compression using PE
- emilykorth
- · Replies 1 ·
Finding position as a function of initial speed and launch angle
- jartg
- · Replies 2 ·
Ideal Gas Law Question: Calculating Final Balloon Volume at High Altitude
- blackjack18
- · Replies 1 ·
Kinetic Energy Of an rotating object
- Duely Cack
- · Replies 3 ·
Gravity 315km from Earth's Surface
- shimizua
- · Replies 10 ·
Finding Acceleration in two Force problems
- jllorens
- · Replies 5 ·
Calculate Force of Inclined Surface: 0.156kg at 55°
- xmflea
- · Replies 1 ·
Solving Relative Speed and Flashes in S' Frame
- Oerg
- · Replies 2 ·
Maximum Angle of Incidence for Glass-Water Boundary?
- Suavez
- · Replies 6 ·
What Torque is Needed to Accelerate a Phonograph Album?
- Duely Cack
- · Replies 3 ·
Block sliding down ramp, energy problem
- Chrisleo13
- · Replies 8 ·
Finding Acceleration from Friction Coefficient and Force Applied
- ChrisMihm31
- · Replies 6 ·
What is the Resultant Gravitational Force on the 8 kg Mass?
- dablondeemu
- · Replies 1 ·
Solving Momentum and Kinetic Energy Relations
- Garen
- · Replies 3 ·
Kinetic energy in rotating objects.
- Duely Cack
- · Replies 1 ·
Volume of 2.0 g helium at 25°C and 775 mm pressure
- blackjack18
- · Replies 7 ·
How Does Quantized Energy Affect Oscillation Amplitude?
- Quelsita
- · Replies 1 ·
Volume of 2 mol N2 @ 0°C & 1 atm: 11.2 L
- blackjack18
- · Replies 17 ·
Seven projectile motion problems for exam
- Libos
- · Replies 2 ·
Moment of Inertia of a Sphere problem
- Frillth
- · Replies 4 ·
How to calculate the time for one revolution in circular motion?
- MRD
- · Replies 2 ·
Satellite. calculate radius of orbit
- evan b
- · Replies 1 ·
How Long to Decelerate in Water with Drag Force?
- Cmur
- · Replies 2 ·
Solving a Difficult Projectile Motion Problem: How Far is the Diagonal Distance?
- Jessicaelleig
- · Replies 3 ·
Calculating Work and Potential Energy in a Vertical Circle
- Almoore01
- · Replies 6 ·
Acceleration of a 219 kg crate pushed with 710 N and friction 0.20
- halo9909
- · Replies 3 ·
Speed of tennis ball dropped from 5.6 m
- PhysicslyDSBL
- · Replies 6 ·
Tangential Speed at the Equator and Beyond
- 7starmantis
- · Replies 16 ·
What is the Magnitude of Acceleration in a Frictionless Equation?
- shimizua
- · Replies 4 ·
Small conversion of units question
- Inertialforce
- · Replies 1 ·
Calculate Friction Force + Coefficient
- halo9909
- · Replies 12 ·
Coefficient of kinetic friction and Energy
- Leid_X09
- · Replies 1 ·
Finding the Angle for Safe Max Speed on Unbanked Curve
- aimslin22
- · Replies 2 ·
Calculating Exhaust Gas Speed for a 4200kg Rocket Launch
- pbumper1
- · Replies 4 ·
Gauss's Law Problem: Electric Field Inside a Charged Cylinder
- bcjochim07
- · Replies 2 ·
Calculating an Astronaut's Weight on Planet X
- shimizua
- · Replies 7 ·
Box with mass attached to spring and board
- 12boone
- · Replies 3 ·
Physics Problem: Determining Applied and Normal Forces on a Vertical Window
- piper210_355
- · Replies 1 ·
Calulate Acceleration from Friction
- halo9909
- · Replies 2 ·
When is a car's acceleration eastward or negative?
- aquapod17
- · Replies 2 ·
Resistance and Temperature(isn't this right?)
- Tekmachine
- · Replies 3 ·
Force on a Particle in a B-field
- Jan42
- · Replies 1 ·
Finding work done on object with a chnaging force
- emilykorth
- · Replies 1 ·
Acceleration and Deacceleration
- pippintook
- · Replies 1 ·
Does Mass of Cart Affect Spring Extension?
- kay123
- · Replies 1 ·
How do i solve this physics problem that contains vectors
- baseball2233
- · Replies 1 ·
How Does a Tungsten Filament's Size Affect Its Radiated Power?
- Quelsita
- · Replies 4 ·
Work required to assemble charged particles
- SilverGirl
- · Replies 4 ·
Daredevil motorcycle max height
- Leid_X09
- · Replies 1 ·
Projectile Motion Problem: Determining Height Using Equations
- jumbogala
- · Replies 2 ·
Rotation caused by friction on a sphere
- cognaq
- · Replies 3 ·
Finding average power for an object being vertically lifted
- emilykorth
- · Replies 2 ·
Calculating Speed and Height of a Thrown Ball
- 12boone
- · Replies 2 ·
Motion under a constant force (relativity-related)
- nastassja
- · Replies 1 ·
Calculate the orbital period of a spacecraft around the moon
- pinkerpikachu
- · Replies 4 ·
How many balls can this juggler juggle?
- zealot1985
- · Replies 15 ·
How Do I Solve These Complex Newtonian Mechanics Problems?
- TripelS
- · Replies 2 ·
Cart bouncing off rubber block on 31° ramp distance
- MightyMan11
- · Replies 2 ·
What is the value of the spring constant k?
- mathgirl2007
- · Replies 3 ·
Tire rotation angle for 2 ft diameter over 60,000 miles
- assirma
- · Replies 1 ·
Objects of equal mass, but different terminal velocities?
- TelusPig
- · Replies 6 ·
Can special relativity make a murder happen before the shooting?
- Chaste
- · Replies 5 ·
Finding angle and acceleration when a box slides down an inclined board
- piper210_355
- · Replies 5 ·
Why is rocket car thrust constant if F = dp/dt includes changing velocity?
- calculus_jy
- · Replies 9 ·
How do I correctly derive the formula for circular motion in a physics lab?
- Epsillon
- · Replies 5 ·
What is the Maximum Compression of a Spring on a Frictionless Surface?
- bkhofmann
- · Replies 6 ·
Collision question using conservation of kinetic energy
- tippetmaster
- · Replies 7 ·
Electric Field due to a Charged Disk.
- phoibos323
- · Replies 2 ·
Why do Poisson brackets give {x,p} = 1 not 0?
- gijoe
- · Replies 4 ·