Introductory Physics Homework Help Forum

Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.

Threads

Helicopter accelerates while liftin what are the forces' magnitudes?

  • Natali
  • · Replies 1 ·
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1

Newton's Laws: Sharp vs. Dull Knives

  • tornzaer
  • · Replies 1 ·
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1

Findin buckets' tension when there are two strings n two buckets

  • Natali
  • · Replies 1 ·
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1

How Does a Pulley System Affect the Force Exerted by a Table on a Box?

  • Natali
  • · Replies 1 ·
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1

Momentum - Baseball Homework: Average Force, Direction

  • tiggrulz13
  • · Replies 7 ·
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7

Block sliding down an inclined plain with gravity

  • mcnegron90
  • · Replies 1 ·
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1

Lens and Focal Length Practice Problems

  • Suavez
  • · Replies 9 ·
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9

Tennis Ball Drop II: Find Force Exerted on Floor

  • PhysicslyDSBL
  • · Replies 2 ·
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2

Calculate the Pressures of H2 and He: Are answers correct?

  • blackjack18
  • · Replies 1 ·
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1

Calculate Collector Current w/ Emitter @ 100mA - Transistor Switch

  • Jason7fd
  • · Replies 5 ·
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5

Two Blocks with rope and Pulley on Inclined Plane

  • Dahaka14
  • · Replies 3 ·
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3

Work Energy Theorem Loop-The-Loop problem

  • Awwnutz
  • · Replies 15 ·
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15

Bullet shot into pendulum - conservation of energy

  • itryphysics
  • · Replies 2 ·
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2

Calculating Vehicle Deceleration: Time & Distance

  • ajayespinoza
  • · Replies 1 ·
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1

MOCO Homework: Determine Avg Velocity

  • ajayespinoza
  • · Replies 1 ·
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1

Block pulled up incline, slides down, compresses spring

  • r34racer01
  • · Replies 7 ·
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7

Why Does the Scale Show 76 kg in the Elevator?

  • drewdiddy
  • · Replies 1 ·
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1

UPS man pushes boxes up a ramp problem

  • egrus8
  • · Replies 1 ·
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1

Pressure and Density: Force Increase on Eardrum in 10-Story Building

  • w11205
  • · Replies 1 ·
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1
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1

Block, Cart, and Pulley Question

  • r34racer01
  • · Replies 12 ·
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12

Calculate Coefficient of Sliding Friction for Icy Road | 11m/s Car Braking

  • halo9909
  • · Replies 1 ·
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1

Deriving velocty with drag equation

  • M4573R
  • · Replies 1 ·
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1

Projectile and acceleration of gravity

  • armoredfury16
  • · Replies 1 ·
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1

Relative Velocity of a Helicopter

  • vsharma88
  • · Replies 1 ·
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1

Finding spring compression using PE

  • emilykorth
  • · Replies 1 ·
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1

Kinematics Equation: Get Position from Speed & Angle

  • jartg
  • · Replies 2 ·
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2

Ideal Gas Law Question: Calculating Final Balloon Volume at High Altitude

  • blackjack18
  • · Replies 1 ·
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1

Kinetic Energy Of an rotating object

  • Duely Cack
  • · Replies 3 ·
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3

Gravity 315km from Earth's Surface

  • shimizua
  • · Replies 10 ·
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10

Finding Acceleration in two Force problems

  • jllorens
  • · Replies 5 ·
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5

Calculate Force of Inclined Surface: 0.156kg at 55°

  • xmflea
  • · Replies 1 ·
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1

Solving Relative Speed and Flashes in S' Frame

  • Oerg
  • · Replies 2 ·
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2

Maximum Angle of Incidence for Glass-Water Boundary?

  • Suavez
  • · Replies 6 ·
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6

What Torque is Needed to Accelerate a Phonograph Album?

  • Duely Cack
  • · Replies 3 ·
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3

Block sliding down ramp, energy problem

  • Chrisleo13
  • · Replies 8 ·
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8

Finding Acceleration from Friction Coefficient and Force Applied

  • ChrisMihm31
  • · Replies 6 ·
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6

What is the Resultant Gravitational Force on the 8 kg Mass?

  • dablondeemu
  • · Replies 1 ·
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1

Solving Momentum and Kinetic Energy Relations

  • Garen
  • · Replies 3 ·
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3

Kinetic energy in rotating objects.

  • Duely Cack
  • · Replies 1 ·
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1

Gas Law Problems: Calculating Volume of 2.0g He at 25°C & 775 mm Pressure

  • blackjack18
  • · Replies 7 ·
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7

How Does Quantized Energy Affect Oscillation Amplitude?

  • Quelsita
  • · Replies 1 ·
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1

Volume of 2 mol N2 @ 0°C & 1 atm: 11.2 L

  • blackjack18
  • · Replies 17 ·
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17

Help in Motion in Two Dimensions (Physics)

  • Libos
  • · Replies 2 ·
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2

Moment of Inertia of a Sphere problem

  • Frillth
  • · Replies 4 ·
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4

How to calculate the time for one revolution in circular motion?

  • MRD
  • · Replies 2 ·
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2

Satellite. calculate radius of orbit

  • evan b
  • · Replies 1 ·
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1

How Long to Decelerate in Water with Drag Force?

  • Cmur
  • · Replies 2 ·
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2

Solving a Difficult Projectile Motion Problem: How Far is the Diagonal Distance?

  • Jessicaelleig
  • · Replies 3 ·
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3

Calculating Work and Potential Energy in a Vertical Circle

  • Almoore01
  • · Replies 6 ·
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6

Acceleration of a 219 kg crate pushed with 710 N and friction 0.20

  • halo9909
  • · Replies 3 ·
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3

Solve Tennis Ball Drop: 0.5kg at 5.6m Height

  • PhysicslyDSBL
  • · Replies 6 ·
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6

Tangential Speed at the Equator and Beyond

  • 7starmantis
  • · Replies 16 ·
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16

What is the Magnitude of Acceleration in a Frictionless Equation?

  • shimizua
  • · Replies 4 ·
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4

Small conversion of units question

  • Inertialforce
  • · Replies 1 ·
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1

Calculate Friction Force + Coefficient

  • halo9909
  • · Replies 12 ·
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12

Coefficient of kinetic friction and Energy

  • Leid_X09
  • · Replies 1 ·
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1

Finding the Angle for Safe Max Speed on Unbanked Curve

  • aimslin22
  • · Replies 2 ·
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2

Calculating Exhaust Gas Speed for a 4200kg Rocket Launch

  • pbumper1
  • · Replies 4 ·
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4

Gauss's Law Problem: Electric Field Inside a Charged Cylinder

  • bcjochim07
  • · Replies 2 ·
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2

Calculating an Astronaut's Weight on Planet X

  • shimizua
  • · Replies 7 ·
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7

Box with mass attached to spring and board

  • 12boone
  • · Replies 3 ·
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3

Physics Problem: Determining Applied and Normal Forces on a Vertical Window

  • piper210_355
  • · Replies 1 ·
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1

Calulate Acceleration from Friction

  • halo9909
  • · Replies 2 ·
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2

Car Acceleration homework questions

  • aquapod17
  • · Replies 2 ·
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2

Resistance and Temperature(isn't this right?)

  • Tekmachine
  • · Replies 3 ·
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3

Force on a Particle in a B-field

  • Jan42
  • · Replies 1 ·
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1

Finding work done on object with a chnaging force

  • emilykorth
  • · Replies 1 ·
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1

Acceleration and Deacceleration

  • pippintook
  • · Replies 1 ·
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1

Does Mass of Cart Affect Spring Extension?

  • kay123
  • · Replies 1 ·
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1

How do i solve this physics problem that contains vectors

  • baseball2233
  • · Replies 1 ·
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1

How Does a Tungsten Filament's Size Affect Its Radiated Power?

  • Quelsita
  • · Replies 4 ·
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4

Work required to assemble charged particles

  • SilverGirl
  • · Replies 4 ·
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4

Daredevil motorcycle max height

  • Leid_X09
  • · Replies 1 ·
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1

Projectile Motion Problem: Determining Height Using Equations

  • jumbogala
  • · Replies 2 ·
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2

Rotation caused by friction on a sphere

  • cognaq
  • · Replies 3 ·
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3

Finding average power for an object being vertically lifted

  • emilykorth
  • · Replies 2 ·
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2

Calculating Speed and Height of a Thrown Ball

  • 12boone
  • · Replies 2 ·
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2

Motion under a constant force (relativity-related)

  • nastassja
  • · Replies 1 ·
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1

Calculate the orbital period of a spacecraft around the moon

  • pinkerpikachu
  • · Replies 4 ·
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4

How many balls can this juggler juggle?

  • zealot1985
  • · Replies 15 ·
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15

How Do I Solve These Complex Newtonian Mechanics Problems?

  • TripelS
  • · Replies 2 ·
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2

Cart Collision Homework: Calculate Distance Traveled After Bounce

  • MightyMan11
  • · Replies 2 ·
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2

What is the value of the spring constant k?

  • mathgirl2007
  • · Replies 3 ·
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3

Calculate Tire Angles for 2ft Diameter & 60,000 Miles

  • assirma
  • · Replies 1 ·
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1

Objects of equal mass, but different terminal velocities?

  • TelusPig
  • · Replies 6 ·
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6

Help with Topic on Causality and Speical relativity

  • Chaste
  • · Replies 5 ·
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5

Help Needed: Physics Homework Problem with Angle Theta & Acceleration

  • piper210_355
  • · Replies 5 ·
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5

Rocket Car: Constant Force Despite Acceleration

  • calculus_jy
  • · Replies 9 ·
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9
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5

What is the Maximum Compression of a Spring on a Frictionless Surface?

  • bkhofmann
  • · Replies 6 ·
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6

Collision question using conservation of kinetic energy

  • tippetmaster
  • · Replies 7 ·
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7

Electric Field due to a Charged Disk.

  • phoibos323
  • · Replies 2 ·
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2
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4

Finding charge, voltage and resistance

  • Kathi201
  • · Replies 1 ·
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1

How Many Times Would Friends A & B Cross Each Other at the Track?

  • zealot1985
  • · Replies 4 ·
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4

Cone-shaped drain speed based on R and time

  • Rileyss123
  • · Replies 8 ·
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8

Solve Friction on Incline: 3.00kg Crate, 35.0°, 9.80m/s2

  • jstiel
  • · Replies 2 ·
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2

Circular motion - velocity of carts on a rollercoaster

  • klaw25
  • · Replies 1 ·
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1

Earth-Moon Center Line of Gravity

  • uno
  • · Replies 1 ·
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1