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

Newton`s 3rd Law Tension Solved Question

  • Sabellic
  • · Replies 7 ·
Replies
7

What is the Path Difference for a Diffraction Grating?

  • nirvana1990
  • · Replies 6 ·
Replies
6

Calculating the Net Force on a Model Airplane

  • Edwardo_Elric
  • · Replies 1 ·
Replies
1

What is the net charge on the hollow conducting sphere?

  • mitleid
  • · Replies 2 ·
Replies
2

Proton's Final Speed in Double-Charged Capacitor

  • Xaspire88
  • · Replies 16 ·
Replies
16

Throwing a ball from a building [a trajectory problem].

  • niyati
  • · Replies 3 ·
Replies
3

How long does a flea accelerate to reach takeoff speed of 1.1 m/s?

  • Robdog
  • · Replies 4 ·
Replies
4

Time for pulse to travel a length

  • anglum
  • · Replies 7 ·
Replies
7

Velocity and acceleration of two objects

  • strigner
  • · Replies 1 ·
Replies
1

Period of a dipole oscillating in an electric field

  • indigojoker
  • · Replies 34 ·
2
Replies
34

How Does Amplitude, Energy, and Travel Distance Affect Wave Speed?

  • BoggyP
  • · Replies 11 ·
Replies
11

How Does Gauss's Law Apply to the Flux Through a Cube Near a Charged Sphere?

  • physicsstooge
  • · Replies 8 ·
Replies
8

Relating force constant and frequency to mass

  • Vidatu
  • · Replies 4 ·
Replies
4

Rocket accelerating upward from rest with constant acceleration

  • physstudent1
  • · Replies 3 ·
Replies
3

Work/Energy Problem: Maximum Height of Daredevil on Motorcycle

  • myelevatorbeat
  • · Replies 5 ·
Replies
5

Is My Calculation of the Final Temperature of Clay Correct?

  • rijo664
  • · Replies 1 ·
Replies
1

Finding the instantaneous acceleration

  • BuBbLeS01
  • · Replies 3 ·
Replies
3

Five physics riddles about force, friction, and tension

  • Marco Barghi
  • · Replies 3 ·
Replies
3

Am I correct in my assumptions?

  • rootX
  • · Replies 2 ·
Replies
2

Resultant Force magnitude of the acceleration.

  • BuBbLeS01
  • · Replies 7 ·
Replies
7

What Determines the Gauge Pressure in a Garden Hose with a Leak?

  • whoknows123
  • · Replies 7 ·
Replies
7

Ball thrown up inclined plane: Newton's second law and range formula

  • Oblio
  • · Replies 71 ·
3
Replies
71

Using Kirchhoff's Rules to Solve a Circuit Problem with Resistors and Batteries

  • William Bush
  • · Replies 11 ·
Replies
11

Climber falls past first protection point toward second

  • KURD86
  • · Replies 2 ·
Replies
2

Solving the Mystery of Clay Temperature Change

  • rijo664
  • · Replies 2 ·
Replies
2

Solving the Tug of War: Jackie vs. Sue

  • reignofdragons
  • · Replies 1 ·
Replies
1

How Do You Calculate Pressure Difference and Upward Force on an Airplane Wing?

  • whoknows123
  • · Replies 9 ·
Replies
9

A spaceship travelling at 0.8c

  • smithg86
  • · Replies 18 ·
Replies
18

Weight of a painter's staging with person in equilibrium

  • ingrida1
  • · Replies 1 ·
Replies
1

What are the displacement vectors and directions of a hiker's route?

  • roshanak_fe
  • · Replies 2 ·
Replies
2
Replies
1

Calculating Tension in Connecting String of Two Blocks

  • Jwill
  • · Replies 29 ·
Replies
29

A football is thrown upward at a 43 degree angle to the horizontal

  • ahsanmhamid
  • · Replies 3 ·
Replies
3

Breaking Records: French National Railroad's TGV Acceleration

  • ahsanmhamid
  • · Replies 3 ·
Replies
3

A projectile of mass 0.552 kg is shot from a cannon, at height 7 m,?

  • ahsanmhamid
  • · Replies 2 ·
Replies
2

Moment of Inertia/Angular Speed/Torque

  • mircobot
  • · Replies 3 ·
Replies
3

Initial Velocity of a kicked rock

  • Claymore
  • · Replies 7 ·
Replies
7

Why does a rolling cannon recoil slowly if momentum is equal?

  • eraemia
  • · Replies 1 ·
Replies
1

Calculating Minimum Stopping Distance for a Car at Different Speeds

  • klm
  • · Replies 12 ·
Replies
12

Finding the Time Elapsed in an Atwood Machine Arrangement

  • neelakash
  • · Replies 2 ·
Replies
2

Gold crown submerged in water: is it pure gold or gold-copper alloy?

  • chucas11
  • · Replies 5 ·
Replies
5

Calculating Charge on Parallel Plates

  • Etopn23
  • · Replies 34 ·
2
Replies
34

How Do You Return to the Oak Tree After Finding the Treasure?

  • eeriana
  • · Replies 4 ·
Replies
4

LearningPhysics one last runner problem

  • anglum
  • · Replies 14 ·
Replies
14

How Do You Graph Velocity for Different Speeds and Time Intervals?

  • kevinf
  • · Replies 1 ·
Replies
1

What is the horizontal acceleration of a 7.00-kg block with two given forces?

  • KachinaEarth
  • · Replies 7 ·
Replies
7

Runner and a bird heading towards finish line

  • anglum
  • · Replies 39 ·
2
Replies
39

Speed of rocks thrown from cliff and total energy of ball below ground

  • eraemia
  • · Replies 7 ·
Replies
7

Physics Falling Bodies Question

  • Phan
  • · Replies 11 ·
Replies
11

Train Collision Calculation: Red Train vs Green Train on 950 km Track"

  • brendan3eb
  • · Replies 1 ·
Replies
1

Finding how long it takes given changing acceleration

  • lim
  • · Replies 1 ·
Replies
1

Calculating Heat Required to Raise Water Temperature to 100°C

  • rijo664
  • · Replies 1 ·
Replies
1
Replies
12

R= the square root of x^2 + y^2

  • CarlosNunes
  • · Replies 1 ·
Replies
1

How many 86 kg people can fit in a metric ton elevator?

  • anglum
  • · Replies 1 ·
Replies
1

Finding magnitudes of vector sums and differences

  • I am a Newbie
  • · Replies 5 ·
Replies
5

Calculating Minimum Asteroid Size for Astronaut Safety

  • ColdFusion85
  • · Replies 4 ·
Replies
4

Time dilation for a satellite orbiting Earth over 1 year

  • Benzoate
  • · Replies 13 ·
Replies
13

Proving maximum height h = 0.25R tan θ for projectile motion

  • xRadio
  • · Replies 21 ·
Replies
21

Displacement after driving 22 km north then 47 km southeast

  • Eathrock
  • · Replies 27 ·
Replies
27

How far is the sun if light takes 8.3 minutes to reach Earth?

  • motoxtremechick
  • · Replies 7 ·
Replies
7

Tortoise and hare race problem with rest time

  • perfect_piccolo
  • · Replies 9 ·
Replies
9

Calculating Constant Acceleration of Stopping Airplane

  • drewbie55
  • · Replies 2 ·
Replies
2

Calculating Flux in Box with Charged Boards

  • yevi
  • · Replies 13 ·
Replies
13

Orbit Transfer to Lower Apoapsis of a Mars Orbit

  • ColdFusion85
  • · Replies 11 ·
Replies
11

Problem: Given Angle and Distance

  • dakinecuz
  • · Replies 1 ·
Replies
1

Advantage of doorknobs with long handles

  • deamonvivid
  • · Replies 20 ·
Replies
20
Replies
1

How Do You Convert Length Measurements to Volume?

  • plutoisacomet
  • · Replies 3 ·
Replies
3

Conservation of Momentum of two carts Problem

  • eraemia
  • · Replies 1 ·
Replies
1

How Does Rocket Motion Change After Engine Failure?

  • Idealism_Theory
  • · Replies 6 ·
Replies
6

Solve for Speed at Start of Long Jump: 6.5 m/s

  • faoltaem
  • · Replies 3 ·
Replies
3

How Is Centripetal Acceleration Calculated for a Stone Thrown by a Sling?

  • chaotixmonjuish
  • · Replies 19 ·
Replies
19

Does Kepler's Second Law Indicate Variable Orbital Speeds?

  • Saladsamurai
  • · Replies 8 ·
Replies
8

Understanding an instantanious velocity lab

  • B-80
  • · Replies 2 ·
Replies
2

Calculate Average Density of a Person Hanging in Mid-Air

  • faoltaem
  • · Replies 2 ·
Replies
2

How to Solve for Distance and Time in a Two-System Motion Problem

  • sophie07
  • · Replies 2 ·
Replies
2

How do I solve this motion problem using the given equations?

  • faoltaem
  • · Replies 2 ·
Replies
2

Effective reisistance of an unbalanced wheatstone bridge.

  • Mr Virtual
  • · Replies 4 ·
Replies
4

Fiber Optic Refraction: Calculating Light Ray Distance and Reflections

  • kelvin_ng
  • · Replies 10 ·
Replies
10

Physics Lab - Projectile Motion - Deriving a Position Vector

  • Ahwleung
  • · Replies 3 ·
Replies
3

String vibration and frequency,amplitude,length

  • Leopold Stotch
  • · Replies 15 ·
Replies
15

Angle between vector B and the x-axis

  • anglum
  • · Replies 28 ·
Replies
28

Solve Pulley Problem: Force Magnitudes & Ceiling Force

  • csquared5
  • · Replies 11 ·
Replies
11

Calculate Alexandra's Calories Burned in 8 Weeks of Training

  • Larrytsai
  • · Replies 3 ·
Replies
3

Figuring Out Angle Between Two Points

  • anglum
  • · Replies 2 ·
Replies
2

Deriving launch angle from range and peak height equations

  • Remulak
  • · Replies 7 ·
Replies
7

Finding the Height of a Building Using Free Fall Motion

  • Zero_Bishop
  • · Replies 8 ·
Replies
8

Tension in cord connecting masses on floor and incline

  • phyzziksn00b
  • · Replies 3 ·
Replies
3

Rocket acceleration and free fall for 8 seconds

  • Robdog
  • · Replies 2 ·
Replies
2

SOS How do you fing the coefficient of kinetic friction? SOS

  • moniecookie
  • · Replies 1 ·
Replies
1

What Angle is the Path of a Moon Landing Descent Vehicle?

  • anglum
  • · Replies 2 ·
Replies
2

What is the average speed during acceleration?

  • anglum
  • · Replies 2 ·
Replies
2

Backpacker walking west then east with average velocity 1.34 m/s

  • HT3
  • · Replies 4 ·
Replies
4

How Do You Graphically Solve Vector Displacement Problems?

  • veloix
  • · Replies 2 ·
Replies
2

What Is the Northern Component of an Airplane's Velocity?

  • anglum
  • · Replies 7 ·
Replies
7

Train Braking Distance Calculation

  • CathyLou
  • · Replies 6 ·
Replies
6

Finding Displacement with Constant Acceleration

  • MemoIhad
  • · Replies 2 ·
Replies
2

How Do Moving Frames Affect the Observation of a Puck's Path?

  • Oblio
  • · Replies 27 ·
Replies
27

How can Eldar toss an apple to Rahwa at the top of a steep hill?

  • camherokid
  • · Replies 4 ·
Replies
4