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

Initial Speed of 5.5g Bullet Fired into 22.6g Wood Block

  • Addison
  • · Replies 4 ·
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4

Calculate Absolute Pressure with Pump, Height, Density

  • mindhater
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2

Youngs Modulus and Elastic Modulus

  • Poppy
  • · Replies 6 ·
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6
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Difficulty of calculus-based physics up to waves

  • NanoTech
  • · Replies 2 ·
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2

Potential difference and ohms law

  • nautica
  • · Replies 6 ·
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6

Setting up three kinematics problems with balls, objects and particles

  • Pepsi24chevy
  • · Replies 8 ·
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8

What Happens to the Force Between Two Touching Charged Spheres When Separated?

  • TheMadCapBeta
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2
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What Is the Correct Electric Field Calculation for a Point Charge?

  • nautica
  • · Replies 3 ·
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3

Parallel Resistance for Two Identical Headlights with 6V Battery

  • nautica
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2

Bungee jump from a bridge, how to find h

  • jperez94
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2
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Finding a and b to make a piecewise function continuous

  • ACLerok
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3

What are the Moments and Forces in These Statics Problems?

  • formulajoe
  • · Replies 3 ·
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3

Time to fill a pool with a 5/8 inch diameter hose

  • mindhater
  • · Replies 2 ·
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2

Solving Easy Work Problem: 10N x 3.5m and 805 N x 22m

  • diciccod
  • · Replies 2 ·
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2

Waves Investigation [Using water]

  • Acidvoodoo
  • · Replies 2 ·
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2

How to interpret this projectile motion problem

  • mcintyre_ie
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2
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2
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5

Rotational kinematics and grinding wheel

  • ACLerok
  • · Replies 2 ·
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2
  • Poll Poll

Why do 1g and 2.5g cars stick together after collision?

  • nodnarb
  • · Replies 2 ·
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2

Find Initial Velocity of 5.5g Bullet Impacting 22.6g Block

  • melal
  • · Replies 2 ·
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2

Differentiating electromagnetic field

  • jlmac2001
  • · Replies 4 ·
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4

Blood pressure difference in constricted artery and oil flow rate

  • moonlit
  • · Replies 6 ·
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6
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2

Elastic head-on collision physics

  • Eminem04
  • · Replies 4 ·
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4

Electric current, capacitance, and field problems homework

  • nautica
  • · Replies 5 ·
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5

Speed and direction of bubble layer center of mass

  • DivGradCurl
  • · Replies 2 ·
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2

Non-free-fall Acceleration Problem

  • holly
  • · Replies 3 ·
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3

How to Integrate by Parts Twice for e^3x cos(x)?

  • Klion
  • · Replies 4 ·
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4

Centroid of a shape with a half circle hole

  • cathliccat
  • · Replies 3 ·
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3

Integral of Natural Log Part II

  • wubie
  • · Replies 4 ·
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4

Help with solving 6x - x² = x and factoring 2x⁴ - 32

  • physicszman
  • · Replies 3 ·
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3

Hyperfine and fine structure ENERGIES

  • student1938
  • · Replies 2 ·
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2

Average force from a shot put throw

  • Unknown
  • · Replies 2 ·
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2

Integrating Natural Logarithmic Functions

  • wubie
  • · Replies 3 ·
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3

Ball rolling down ramp off a table

  • KingNothing
  • · Replies 2 ·
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2

Solving for Initial Speed of a 5.5g Bullet Impacting Wood Block

  • CoolBlueR
  • · Replies 2 ·
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2

What constant force does the punter exert on the ball?

  • pinkbubbles04
  • · Replies 2 ·
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2

Dropped Rock Kinetic Energy Problem

  • NIT14
  • · Replies 5 ·
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5

Searching for female physicists

  • kl2d1726
  • · Replies 5 ·
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5

Car moving in circle with acceleration at 46 degrees to velocity

  • Xamfy19
  • · Replies 4 ·
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4

How to draw force diagrams for a physics test

  • dgessler
  • · Replies 2 ·
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2

Two-section tube flow rate using Poiseuille's law

  • rddimtbo
  • · Replies 1 ·
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1
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7

Why alkanes are said to be saturated

  • recon
  • · Replies 2 ·
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2

Problem with composite functions

  • krusty the clown
  • · Replies 5 ·
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5

Rotating coordinates on a plane without graphing

  • Dagenais
  • · Replies 2 ·
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2

Need Help? Solve 2 Physics Problems

  • spudnick
  • · Replies 3 ·
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3

Equilvalent Resistance Problems

  • mustang
  • · Replies 4 ·
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4

Calculating Electric Field in a Line of Charge Problem

  • Andrew.
  • · Replies 4 ·
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4

Finding <x> for a superposition of harmonic oscillator eigenstates

  • spdf13
  • · Replies 2 ·
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2

What is the maximum altitude reached?

  • Themachine8
  • · Replies 3 ·
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3

Calculate the normal force and the tension in the string

  • hadoken22
  • · Replies 3 ·
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3

Irrotational and divergenceless?

  • jlmac2001
  • · Replies 2 ·
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2

Two resistors in series and parallel, find resistance of A

  • mustang
  • · Replies 2 ·
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2

How Does Electric Field Strength Change with Distance from a Point Charge?

  • pringless
  • · Replies 2 ·
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2

How Is the Potential Energy of a Skydiver-Earth System Reducing?

  • Crashdowngurl
  • · Replies 3 ·
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3

How Does Physics Enhance Car Performance and Safety Features?

  • Kensai
  • · Replies 3 ·
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3
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5
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Calculating Force to Pull Copper Ball Upward

  • anneseanandy
  • · Replies 3 ·
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3

Newtonian mechanics on a particle

  • jlmac2001
  • · Replies 2 ·
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2

SecondOrder Nonhomogenous Linear Differential Equations

  • wubie
  • · Replies 1 ·
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1

How can I determine the speed of a bullet fired into a block of wood?

  • Crashdowngurl
  • · Replies 3 ·
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3

Laplacian of sqrt(x² - y²) and ln(r²)

  • jlmac2001
  • · Replies 4 ·
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4
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2

Entropy rate in cylindrical rod with thermal reservoirs

  • Skyblitz
  • · Replies 2 ·
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2

Powering 4 Blue LED's in Parallel: Dropping Voltage to 3.5V

  • Cummings
  • · Replies 5 ·
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5

EMF induced in rectangular loop moving past infinite current wire

  • infinitelylong
  • · Replies 2 ·
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2

What is the Formula for Converting Rotational Speed to Linear Speed?

  • celect
  • · Replies 3 ·
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3
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3

Finding the y-intercept of y=3x^2-16x-12

  • Echo 6 Sierra
  • · Replies 6 ·
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6

What are vectors and how are they used in physics?

  • Maxwell
  • · Replies 3 ·
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3

Photoelectric Effect: Max Current, Cutoff Potential, Kinetic Energy

  • marshall4
  • · Replies 2 ·
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2

Finding acceleration of a 12.5 kg crate on a 22-degree ramp

  • paigegail
  • · Replies 2 ·
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2

Force of Object on Inclined Place

  • paigegail
  • · Replies 2 ·
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2

Series and parallel resistor circuits with 3 problems

  • mustang
  • · Replies 2 ·
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2

Finding unknown resistance and current in series and parallel circuits

  • mustang
  • · Replies 2 ·
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2

Simple Quantum Mechanics Problem

  • student1938
  • · Replies 13 ·
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13

What is Young's Modulus and How Does it Differ Between Materials?

  • Magg$
  • · Replies 20 ·
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20

Atmospheric pressure, buoyancy, and fluid dynamics problems

  • Krivanka
  • · Replies 2 ·
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2

How Fast Does a Girl Enter the Water When Diving from a 15m Platform?

  • meawinner
  • · Replies 2 ·
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2

At what time will the particle be traveling at 32 degrees

  • Xamfy19
  • · Replies 7 ·
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7

Why does cos theta = dot product divided by magnitudes?

  • formulajoe
  • · Replies 3 ·
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3

Calculating Receiver's Path and Speed to Catch Thrown Ball

  • neochris
  • · Replies 3 ·
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3

Calculating Initial Velocity for a Basketball Player's Leap

  • pepperoni
  • · Replies 4 ·
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4

How did they calculate the speed of light?

  • crystal cascade
  • · Replies 4 ·
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4

What does magnitude of the force mean?

  • HandcuffedKitty
  • · Replies 3 ·
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3

Electromagnetic induction and transformer formula help

  • tzvu
  • · Replies 5 ·
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5

Clueless about electric charges questions;

  • Matt Jacques
  • · Replies 2 ·
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2

How Do You Calculate Acceleration in Different Scenarios?

  • adversary
  • · Replies 2 ·
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2

Theres something about gravitational

  • ACLerok
  • · Replies 2 ·
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2

How Do You Calculate Electric Fields of Spherical Charges Using Gauss's Law?

  • eku_girl83
  • · Replies 3 ·
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3

Circular motion problem with 0.4 kg mass

  • DR33
  • · Replies 2 ·
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2

Calculating Work and Kinetic Energy of Jet-Powered Train

  • DarkAnt
  • · Replies 2 ·
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2

Calculating Tension of Steel Wire at Different Temperatures

  • HWManiac
  • · Replies 3 ·
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3