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

Hi i want to derive the 2nd equation of motion using the 1st

  • faiziqb12
  • · Replies 13 ·
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13

RC circuit: find charge rate, energy storage and power at 1 second

  • Fat_Squirrel
  • · Replies 12 ·
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12

Diagram for Wooden Block Friction Problem

  • takando12
  • · Replies 7 ·
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7
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1

How Does Kinetic Energy Affect Needle Penetration in Medical Procedures?

  • Zynoakib
  • · Replies 7 ·
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7

Dropping ball into spring (inelastic collision)

  • Samei
  • · Replies 15 ·
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15

Physics Forces Question with mass

  • Hannahj1
  • · Replies 4 ·
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4

Force of a bar to stop a rotating cylinder

  • whatdoido
  • · Replies 17 ·
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17

How Does an Impulse Affect the Angular Momentum of a Spinning Wheel in Space?

  • 24forChromium
  • · Replies 6 ·
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6

How Fast Does the Lighter Block Travel When the Spring Relaxes?

  • naianator
  • · Replies 3 ·
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3

Parachutist free fall and deceleration problem

  • hiineko
  • · Replies 7 ·
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7

Kinematics Car velocity Problem

  • hiineko
  • · Replies 9 ·
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9

Mass spring system - unknown spring constant

  • Devtycoon
  • · Replies 6 ·
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6

Force and momentum in gymnastics position

  • alejandro7
  • · Replies 4 ·
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4

The formulas for parallel and series connections

  • Arka420
  • · Replies 8 ·
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8

Force of Falling Objects at a Height

  • Samei
  • · Replies 13 ·
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13

Average power from a windmill raising water from a well

  • azs8t1
  • · Replies 4 ·
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4

The sum of elastic and gravitational energy

  • buonastella
  • · Replies 4 ·
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4

Why divide kinetic energy by time to find power during acceleration

  • Zynoakib
  • · Replies 5 ·
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5

A rectangular conducting frame in a magnetic field

  • kaspis245
  • · Replies 18 ·
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18
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4

Point in water wave with greatest upwards speed?

  • toforfiltum
  • · Replies 4 ·
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4

Maximum terminal voltage, current and power in a battery circuit

  • Fat_Squirrel
  • · Replies 6 ·
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6

Centripetal force direction at the top of a vertical loop

  • Alameen Damer
  • · Replies 9 ·
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9

Pulley question -- 2 pulleys and 2 weights

  • kieyard
  • · Replies 28 ·
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28

Is Centripetal Acceleration Constant in Uniform Circular Motion?

  • faiziqb12
  • · Replies 38 ·
2
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38

Boat and plane velocity vector problems with river and wind

  • victorhugo
  • · Replies 3 ·
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3

How Is the Mass of a Board Determined Using Torque and Tension?

  • andy7793
  • · Replies 8 ·
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8

Angle between velocity vectors of 2D billiard ball collision?

  • naianator
  • · Replies 4 ·
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4

Explanation of E-field torque and initial angle

  • jonochar
  • · Replies 2 ·
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2

Finding block A's velocity in a pulley system with friction

  • Zobrox
  • · Replies 7 ·
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7

Young's double slit experiment: Determine thickness of mica

  • DriesBoon
  • · Replies 2 ·
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2

Solving Projectiles Problem: Ball Rolls Horizontally Off Stairway

  • NooDota
  • · Replies 3 ·
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3

What does minimum normal force mean in a statics problem?

  • Sarah00
  • · Replies 1 ·
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1

Graph of energy against distance

  • arv88
  • · Replies 5 ·
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5

Is the answer key wrong? Physics 12U Dynamics

  • Alameen Damer
  • · Replies 4 ·
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4

How Do You Calculate the Semi-Major Axis of a New Elliptical Orbit?

  • teme92
  • · Replies 7 ·
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7

Kinematics Car acceleration Problem

  • hiineko
  • · Replies 7 ·
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7

What is the Direction of Magnetic Force on a Moving Electron?

  • Jimbob999
  • · Replies 11 ·
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11

How much distance did the fly cover?

  • Delta31415
  • · Replies 40 ·
2
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40

Plane heading to counteract westerly wind and fly north

  • RedDelicious
  • · Replies 3 ·
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3

How Does a Glass Fibre Flywheel Store Kinetic Energy in Buses?

  • Katy96
  • · Replies 44 ·
2
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44

Why does CD depend on L in a 3D forces problem?

  • VectorA
  • · Replies 41 ·
2
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41

Finding Forces in Truss Members for Solving Truss Problems

  • VectorA
  • · Replies 3 ·
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3

Mass on a spring oscillation problem

  • Katy96
  • · Replies 14 ·
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14

Natural frequency of a simple harmonic system

  • TomW17
  • · Replies 3 ·
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3

Charge distribution in the universe

  • patiladitya98
  • · Replies 8 ·
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8

How Do You Calculate Average Speed in Different Driving Conditions?

  • hiineko
  • · Replies 9 ·
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9

Simple pendulum and acceleration due to gravity

  • senan
  • · Replies 21 ·
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21

Calculating Force Magnitude with Friction and Initial Velocity

  • VectorA
  • · Replies 18 ·
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18

Terminal Velocity of Cube: 1.6 m/s

  • Dalip Saini
  • · Replies 2 ·
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2

Hinged bar with horizontal force: angular velocity at horizontal position

  • dirk_mec1
  • · Replies 5 ·
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5

Find the Coefficient of Kinetic Friction for Crate Movement

  • Dalip Saini
  • · Replies 2 ·
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2

Work Done on 500N Barbell 0.5m Above Floor

  • Dalip Saini
  • · Replies 5 ·
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5
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3

Solving a 5.4 Earthquake Aftershock: Round to 1 Decimal Place

  • JasSingh96
  • · Replies 2 ·
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2

Frictional Force vs normal force

  • Dalip Saini
  • · Replies 2 ·
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2

Uniform Circular Motion of coffee cup

  • buonastella
  • · Replies 2 ·
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2

Ratio between molecules having different speeds

  • DavideGenoa
  • · Replies 2 ·
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2

Newton's law problem on homogeneous flexible rope

  • Titan97
  • · Replies 2 ·
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2

Bungee jumper distance fallen during free fall and deceleration

  • mattcom1
  • · Replies 9 ·
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9

Calculating Distance to a Wall Using Speed of Sound

  • Barlock
  • · Replies 31 ·
2
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31

Why do the staircase and elevator climbs involve the same work?

  • SimpleAsker
  • · Replies 2 ·
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2

Finding where a 1 kg sled lands after flying off a hill

  • Ayso24
  • · Replies 10 ·
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10
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5

Is -4m the correct displacement for average velocity calculation?

  • Hannahj1
  • · Replies 1 ·
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1

Kinematics Question -- Plane heading to take into a headwind

  • Hannahj1
  • · Replies 7 ·
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7

A Quick "Lesson" on Physics and sin graphs

  • Ayso24
  • · Replies 1 ·
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1

Given the concurrent forces, Determine the resultant

  • hiineko
  • · Replies 25 ·
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25

Lenz's Law Q: Clockwise or Counterclockwise?

  • lenzlawquestion
  • · Replies 3 ·
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3
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2
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6

Energy Transfer in a Block Sliding Down a Ramp and Hitting a Spring

  • Zynoakib
  • · Replies 1 ·
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1

'forces in two dimensions' problem

  • ilanmichaeli
  • · Replies 3 ·
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3

Calculating Thrust on Curved Surface of Cylindrical Vessel

  • Pyrus
  • · Replies 4 ·
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4
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2

Net force on particle 1 due to particle 2 in vector form?

  • Corey Bacon
  • · Replies 4 ·
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4

Why is the quantum-money analogy incorrect?

  • Logan Johnston
  • · Replies 3 ·
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3

Solving Tension in Wires for Fixed Plate

  • Alex.malh
  • · Replies 3 ·
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3

How Many Springs Are Needed to Safely Stop a Falling Elevator?

  • Tremblay23
  • · Replies 5 ·
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5

Cut the String - Energy and Friction

  • FredericChopin
  • · Replies 2 ·
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2

Calculate Remaining Anesthetic Time: Mass Flow Rate Question

  • jmine
  • · Replies 3 ·
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3

Two concentric conducting spherical shells, find outer Q

  • mattz205
  • · Replies 13 ·
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13

How Does the Angle of Force Application Affect Work Done on a Cart?

  • Zynoakib
  • · Replies 3 ·
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3

Maximum Angle for 2D Collision: Does θmax Exist if m1 > m2?

  • Luca 123
  • · Replies 3 ·
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3

Circular motion in a magnetic field

  • kaspis245
  • · Replies 3 ·
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3

Help with homework problem from image

  • ilanmichaeli
  • · Replies 2 ·
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2

Centripetal acceleration turntable problem

  • Zynoakib
  • · Replies 20 ·
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20

What is the Charge on Each Balloon?

  • Tunamy
  • · Replies 3 ·
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3
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12

Two-Dimensional Collision With Two Moving Objects

  • Vold
  • · Replies 8 ·
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8

How Does Newton's Third Law Apply to Friction and Air Resistance?

  • Lim Jan-Wei
  • · Replies 18 ·
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18

Prove in case of projectile d^2 (v^2 ) / dt^2 = 2g^2

  • Safi Majid
  • · Replies 5 ·
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5

Calculating Average EMF in Two Coils on a Ferromagnetic Core

  • James Holtum
  • · Replies 7 ·
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7

Conservation of Momentum in an Explosion

  • Priyadarshini
  • · Replies 9 ·
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9

Derive the equation for d of wire (Magnetic Force Lab)

  • Al3x L3g3nd
  • · Replies 15 ·
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15

Calculating Work Done during a Collision

  • naianator
  • · Replies 3 ·
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3

Proving tension in rope of equilibrium system

  • toforfiltum
  • · Replies 55 ·
2
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55

Finding distance covered by a particle with x=(t-2)² in 4 seconds

  • Ishaikh
  • · Replies 23 ·
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23

I with Potential Energy compared to energy used.

  • shadowpnther
  • · Replies 8 ·
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8