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

Balancing Forces: Solving 2 Problems

  • Hollysmoke
  • · Replies 3 ·
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3

How to combine two equations with FAC to get 1.732Vb - Hb = 19.32

  • PhysicsApprentice
  • · Replies 7 ·
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7

Work Done by the Gravitational Force problem

  • kappcity06
  • · Replies 15 ·
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15

What is the required force to lift a 15.0 kg child on a teeter-totter?

  • jhrnndz1
  • · Replies 1 ·
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1

Calculating Work and Kinetic Energy: A Ski Slope Scenario

  • kappcity06
  • · Replies 3 ·
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3

Why Does It Take More Suction to Drink a Can With 1 Straw?

  • PhysicsN00b
  • · Replies 3 ·
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3

Motion In the Presence of Resistive Forces

  • webren
  • · Replies 4 ·
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4
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2

How Does Friction Affect Rock Climbing Stability?

  • mikejones2000
  • · Replies 1 ·
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1

Finding the point where electric force on a third charge is zero

  • jairusgarcia
  • · Replies 10 ·
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10

Maximum force before upper block slips on lower block

  • Tensaiga
  • · Replies 10 ·
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10

Optics (refracting light) and (mirrors)

  • Jehuty
  • · Replies 6 ·
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6

Energy created by a falling object

  • emandelli
  • · Replies 6 ·
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6
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12
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1

Soleniod Field Direction With Battery

  • adabistanesoophia
  • · Replies 2 ·
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2

Why do capacitors in series have the same charge but different voltages?

  • adabistanesoophia
  • · Replies 3 ·
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3

Calculating spring potential energy for bicycle pedal assistance

  • Kevin Jones
  • · Replies 1 ·
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1

Uniform Circular Motion - Find Force

  • webren
  • · Replies 4 ·
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4

When Will Ships P & Q Be Closest to Each Other?

  • dopey9
  • · Replies 5 ·
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5

Finding weight of ground above tunnel and number of support columns needed

  • mikejones2000
  • · Replies 1 ·
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1

Optimal Acceleration for Long Jump on the Moon

  • kristen151027
  • · Replies 11 ·
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11

Object exerts an opposing force of equal magnitude

  • Ukitake Jyuushirou
  • · Replies 45 ·
2
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45

Magnetic forces on two current carrying wires

  • endeavor
  • · Replies 3 ·
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3

Trampolinist spring constant: textbook answer 3.9 kN/m vs my answer 3.5 kN/m

  • Ukitake Jyuushirou
  • · Replies 6 ·
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6

Calculating Maximum Distance of Object in Gravity-Free Fall

  • mlazos
  • · Replies 5 ·
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5

Testing different coolant mixtures for water-cooled CPUs

  • mbengtson
  • · Replies 7 ·
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7

How Does Tarzan Accelerate Towards the Cliff in a Frictionless Scenario?

  • Tensaiga
  • · Replies 7 ·
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7
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1

Potential Difference b/t 2 points

  • rjnara
  • · Replies 4 ·
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4

V= at or velocity = acceleration x time square

  • sweet_gen03
  • · Replies 3 ·
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3

Flow Rate of Water with Pressure Difference

  • Idea04
  • · Replies 8 ·
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8
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3

Gauss' law-thin spherical shell

  • app
  • · Replies 3 ·
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3

Question concerning Fluid Mechanics.

  • lawtonfogle
  • · Replies 4 ·
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4

Slinky springs and eq of motion.

  • JoshuaR
  • · Replies 1 ·
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1

Solving Bungee Jump Problem with No Air Resistance or Damping

  • dopey9
  • · Replies 6 ·
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6

GM - M mass of earth , G gravitational constant

  • dopey9
  • · Replies 3 ·
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3

Linear/angular momentum formulas

  • dopey9
  • · Replies 3 ·
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3

Solving Air-Water-Glass Problem

  • ccl4
  • · Replies 5 ·
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5

Probability of puck bouncing of wald

  • whoelsebutme
  • · Replies 2 ·
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2

Circular motion, forces, magic mountain ride.

  • JoshuaR
  • · Replies 4 ·
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4
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5

Electric Field Lines: Symmetry between Opposite Charges

  • ness9660
  • · Replies 1 ·
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1

Acceleration of object - how much time does it take

  • lumtesm
  • · Replies 2 ·
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2

Flux through Gaussian surfaces around charged shells

  • rjnara
  • · Replies 1 ·
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1

Question concerning Electric Field

  • momomo_mo
  • · Replies 2 ·
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2

What are the tension and acceleration in this pulleys and rope problem?

  • Teegvin
  • · Replies 4 ·
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4

Finding Earth's orbital momentum around the sun

  • Natalya18
  • · Replies 3 ·
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3

What is the resistance of the heater?

  • endeavor
  • · Replies 4 ·
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4

How can you use a winch to pull a car?

  • webren
  • · Replies 8 ·
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8

Finding elementary charge from Millikan oil drop data

  • al_201314
  • · Replies 20 ·
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20

Can weever have dispersion of a wavegroup with a unique frequency?

  • Kolahal Bhattacharya
  • · Replies 1 ·
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1

Finding tension between 9.00-kg weight and 5.00-kg block on table

  • webren
  • · Replies 8 ·
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8

Problem involving tension, circular motion and equilibrium

  • walker
  • · Replies 7 ·
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7

Conical Pendulum: A Level Maths Required?

  • dt19
  • · Replies 3 ·
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3

Solving the Problem of a Block Sliding Up an Inclined Plane

  • webren
  • · Replies 5 ·
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5

Tennis ball hit at angle hitting wall at distance d

  • dopey9
  • · Replies 2 ·
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2

Why is 2a1 = a2 in this pulley system?

  • Harmony
  • · Replies 1 ·
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1

What does II mean in math notation?

  • Lorens
  • · Replies 2 ·
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2

Why does charge lose potential energy in a circuit with a light bulb?

  • boris16
  • · Replies 3 ·
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3

Can Initial Speeds of 0m/s Solve This Kinematics Problem?

  • Ukitake Jyuushirou
  • · Replies 31 ·
2
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31

Electric Field and Infinite Plane

  • verd
  • · Replies 9 ·
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9

Is air drag proportional to speed or speed squared?

  • ExitSeven
  • · Replies 2 ·
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2

Average acceleration of a bird changing direction and speed

  • highc
  • · Replies 9 ·
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9

Difference between people 'doing the wave', and a transverse wave?

  • Byrgg
  • · Replies 11 ·
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11

Calculate the velocity of the eight ball after collision

  • aarietta
  • · Replies 5 ·
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5

How do you calculate relative permeability in a loud speaker?

  • copresh1
  • · Replies 5 ·
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5

Projectile motion of 2 dimensions

  • Musicman
  • · Replies 2 ·
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2

What is the final temperature of the lead bullet?

  • aechols1
  • · Replies 3 ·
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3

Calculating the Force Required for an Exceptional Vertical Jump

  • Tensaiga
  • · Replies 7 ·
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7

How Much Kinetic Energy Does the Heavier Piece Acquire in an Explosion?

  • MD2000
  • · Replies 21 ·
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21

What is the flash wattage for a camera flash with a 765 µF capacitor at 345 V?

  • StudentofPhysics
  • · Replies 4 ·
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4

A couple questions - need answers to for final

  • Atomos
  • · Replies 8 ·
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8

Calculating Temperature and Wavelength of Sound with Distance

  • MD2000
  • · Replies 13 ·
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13

Conservation of Energy rollercoaster

  • jhrnndz1
  • · Replies 3 ·
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3
  • Poll Poll

Which resistances are in parallel and which in series

  • smarthbehl
  • · Replies 2 ·
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2

Solve Dynamics Problem for Particle on Semicilinder

  • Paquete
  • · Replies 12 ·
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12

Electric Force Question and Spheres

  • delongk
  • · Replies 2 ·
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2

Calculating Capacitance of a Neuron Axon Using Parallel Plate Capacitor Formula

  • StudentofPhysics
  • · Replies 3 ·
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3

How much flux passes through a spherical surface around a point charge?

  • delongk
  • · Replies 13 ·
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13

Resistor Change from Aorta to Capillaries

  • Alcyon
  • · Replies 24 ·
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24
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5

Calculating Work Done in Lifting a Weight with a Spring

  • willydavidjr
  • · Replies 20 ·
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20

Solving Circuits: Understanding Parallel and Series Connections

  • smarthbehl
  • · Replies 3 ·
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3

Friction problem on inclined plane

  • jhrnndz1
  • · Replies 3 ·
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3

What is the amount of work required to compress the spring?

  • jhrnndz1
  • · Replies 4 ·
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4

Parallel plate capacitor capcitance question?

  • mazinse
  • · Replies 5 ·
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5

Oscillations of a water-filled pendulum when water freezes

  • durt
  • · Replies 6 ·
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6
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25

In what direction should the plane head?

  • Riya
  • · Replies 5 ·
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5

Calculating Current in a Coil with Given Magnetic Field and Parameters

  • endeavor
  • · Replies 4 ·
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4

Understanding Coulomb's Law and Vector Components

  • verd
  • · Replies 8 ·
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8

Calculate the speed of impact at the ground

  • Karma
  • · Replies 4 ·
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4

Calculating Force Between Two Moving Crates

  • Hollysmoke
  • · Replies 2 ·
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2

Understanding Fractions in Scientific Instruments

  • physicsgal
  • · Replies 24 ·
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24

Calculating Force and Thickness of a 8.0g Bullet Passing Through Wood

  • Hollysmoke
  • · Replies 8 ·
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8

Current vs power and voltage in photoelectric effect

  • al_201314
  • · Replies 9 ·
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9

How Do You Calculate Torque in a Beam Suspended by a Rope?

  • mcdelilah
  • · Replies 1 ·
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1

How Does Tension Affect Electric Charge Calculation?

  • verd
  • · Replies 1 ·
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1