Introductory Physics Homework Help Forum

I used Sin instead of Cos for a triangle.

frankR
Jun 23, 2003 · Replies 4 · Jun 24, 2003

Replies: 4

The Starship Enterprise (variable acceleration problem)

frankR
Jun 23, 2003 · Replies 6 · Jun 23, 2003

Replies: 6

How Does Relativity Affect the Length and Orientation of a Moving Rod?

frankR
Jun 23, 2003 · Replies 5 · Jun 23, 2003

Replies: 5

Why do balloons move forward when a car accelerates?

yakabod
Jun 22, 2003 · Replies 5 · Jun 23, 2003

Replies: 5

Rope tension and swing angle for a student on a 10-meter rope

chroot
Jun 22, 2003 · Replies 3 · Jun 23, 2003

Replies: 3

Can Chladni Figures Be Formed on Oscillating Plates?

tudur
Jun 20, 2003 · Replies 2 · Jun 23, 2003

Replies: 2

Finding lengths for four network plans connecting points P, Q, R

dagg3r
Jun 14, 2003 · Replies 2 · Jun 22, 2003

Replies: 2

How do you calculate the effects of crosswinds on a plane's velocity?

Cummings
Jun 21, 2003 · Replies 2 · Jun 22, 2003

Replies: 2

Which way to walk on a bus on a cliff to avoid falling

ratt10mm
Jun 20, 2003 · Replies 4 · Jun 21, 2003

Replies: 4

Thorny Newtonian motion of a spaceship

LiquidPenguin
Jun 14, 2003 · Replies 1 · Jun 21, 2003

Replies: 1

Where Does the Pi Come From in Variable Acceleration Problem?

frankR
Jun 19, 2003 · Replies 11 · Jun 19, 2003

Replies: 11

Calculate the energy and wavelength of the photon

shezill
Jun 19, 2003 · Replies 4 · Jun 19, 2003

Replies: 4

How Do You Simplify (i-3)^4 to a+bi Form?

Wasper
Jun 18, 2003 · Replies 3 · Jun 19, 2003

Replies: 3

What is the Angle of the Man's Path Relative to the Water on a Moving Ship?

physics=headache
Jun 16, 2003 · Replies 3 · Jun 19, 2003

Replies: 3

Minimum travel time angle for parabolic projectile motion

xev
Jun 17, 2003 · Replies 5 · Jun 17, 2003

Replies: 5

Does a pipeline on y=2x+20 need to avoid a town at (50,0) with 5km radius?

ireallyneedhelp
Jun 15, 2003 · Replies 2 · Jun 16, 2003

Replies: 2

Does acceleration have a direction or just a sign?

omgwtf
Jun 15, 2003 · Replies 8 · Jun 15, 2003

Replies: 8

Ball thrown upward at 29.4 m/s: why calculate beyond 3 seconds?

omgwtf
Jun 14, 2003 · Replies 4 · Jun 15, 2003

Replies: 4

Calculating Heat Loss and Temperature Change in a Heated Object

Justanotherstudent
Jun 14, 2003 · Replies 4 · Jun 15, 2003

Replies: 4

Stunt man jumping between buildings 4.9 m apart

physics=headache
Jun 13, 2003 · Replies 7 · Jun 15, 2003

Replies: 7

Algebra II tossed up with Physics

clueless
Jun 13, 2003 · Replies 3 · Jun 15, 2003

Replies: 3

How Does Wavelength Affect Scattering Angle in Light?

Dx
Jun 3, 2003 · Replies 9 · Jun 14, 2003

Replies: 9

How Do I Calculate the Height of a Fence in Projectile Motion?

physics=headache
Jun 13, 2003 · Replies 2 · Jun 13, 2003

Replies: 2

Understanding Hooke's Law: Sample Problems and Solutions

meikamae
Jun 12, 2003 · Replies 2 · Jun 13, 2003

Replies: 2

How Do You Calculate the Charge on the Inner Sphere Using Gauss's Law?

frogstomp_theory
Jun 4, 2003 · Replies 2 · Jun 12, 2003

Replies: 2

Some weird particle problem I invented. Long read.

frankR
Jun 10, 2003 · Replies 4 · Jun 11, 2003

Replies: 4

What is the closest distance at which an eye can see objects clearly?

Dx
Jun 3, 2003 · Replies 2 · Jun 11, 2003

Replies: 2

Classical thermodynamics problem.

Kalimaa23
Jun 11, 2003 · Replies 2 · Jun 11, 2003

Replies: 2

Electric Motors - Which way the force goes.

Cummings
Jun 8, 2003 · Replies 9 · Jun 10, 2003

Replies: 9

How do you explain Hooke's Law to someone without physics background?

meikamae
Jun 9, 2003 · Replies 3 · Jun 9, 2003

Replies: 3

What volume does this sample occupy?

Dx
Jun 8, 2003 · Replies 4 · Jun 9, 2003

Replies: 4

Youngs and single slit experiments

Dx
Jun 2, 2003 · Replies 2 · Jun 9, 2003

Replies: 2

Angular seperation between diff wavelengths

Dx
Jun 2, 2003 · Replies 2 · Jun 9, 2003

Replies: 2

Calculating Average Magnetic Field for a 15 mW 2mm Laser Beam

Dx
May 30, 2003 · Replies 2 · Jun 9, 2003

Replies: 2

How Do You Calculate the Sun's Average Power Output?

Dx
May 30, 2003 · Replies 2 · Jun 9, 2003

Replies: 2

I have enrolled in a Trigonometry Class in College.

zeronem
Jun 4, 2003 · Replies 7 · Jun 9, 2003

Replies: 7

Conversion factor from amperes to milliamperes

dynamic998
Jun 7, 2003 · Replies 7 · Jun 9, 2003

Replies: 7

How Does Light's Wave Nature Affect Double Slit Experiment Results?

Dx
Jun 1, 2003 · Replies 2 · Jun 9, 2003

Replies: 2

What is the mass of a gas sample at STP?

Dx
Jun 8, 2003 · Replies 3 · Jun 8, 2003

Replies: 3

Calculating Frequency Using Doppler Effect Formula

Dx
Jun 7, 2003 · Replies 4 · Jun 8, 2003

Replies: 4

The Relationship Between Celsius and Fahrenheit Temperatures

Dx
Jun 7, 2003 · Replies 3 · Jun 8, 2003

Replies: 3

Forces related question (it's a problem)

Moontears
Jun 8, 2003 · Replies 3 · Jun 8, 2003

Replies: 3

When you double your distance from a sound source

Dx
Jun 7, 2003 · Replies 2 · Jun 7, 2003

Replies: 2

EM waves; max value of electric field

Dx
May 30, 2003 · Replies 2 · Jun 6, 2003

Replies: 2

12 physics final review problems on kinematics, dynamics and energy

Caldus
Jun 4, 2003 · Replies 3 · Jun 5, 2003

Replies: 3

A proton has a speed of 3 x 10^6 m/s

Dx
May 28, 2003 · Replies 2 · Jun 4, 2003

Replies: 2

Tension of a rubber cord problem

stuffy
Jun 3, 2003 · Replies 2 · Jun 3, 2003

Replies: 2

How do you determine the direction of velocity?

Caldus
May 27, 2003 · Replies 2 · Jun 3, 2003

Replies: 2

Measuring the Spring Constant of Two Cords for a Slingshot Apparatus

colonel
Jun 3, 2003 · Replies 3 · Jun 3, 2003

Replies: 3

Calculate (a) the total work done by the gas in the process

msdjohnson
May 23, 2003 · Replies 24 · Jun 3, 2003

Replies: 24

How do I express friction as a velocity term for damped oscillations?

tudur
May 20, 2003 · Replies 8 · Jun 2, 2003

Replies: 8

How Do You Calculate the Fringe Separation in Young's Double Slit Experiment?

Dx
Jun 2, 2003 · Replies 2 · Jun 2, 2003

Replies: 2

How Does Magnification Affect Object Distance in Lens Optics?

Dx
May 31, 2003 · Replies 4 · Jun 2, 2003

Replies: 4

What is the theory of general and special relativity

eastsidecrew
Jun 2, 2003 · Replies 2 · Jun 2, 2003

Replies: 2

Does a Radio Signal Count as a Physical Connection in Competition Rules?

chuck7
May 23, 2003 · Replies 2 · May 30, 2003

Replies: 2

Can this info get a spring constant and a drop height

griokin
May 30, 2003 · Replies 2 · May 30, 2003

Replies: 2

Where Should a Rectangular Plate Be Suspended for Equal Oscillation Periods?

discoverer02
May 30, 2003 · Replies 5 · May 30, 2003

Replies: 5

How Much Does It Cost to Run Household Appliances?

Dx
May 22, 2003 · Replies 2 · May 29, 2003

Replies: 2

Are exp(ikx) and exp(-ax^2) Eigenfunctions of P^2?

jonnylane
May 22, 2003 · Replies 2 · May 29, 2003

Replies: 2

Man pulling pulley to raise elevator: why is acceleration 5 m/s²?

ant284
May 18, 2003 · Replies 10 · May 29, 2003

Replies: 10

Proving Babinet's principle with complementary apertures

KillaMarcilla
May 21, 2003 · Replies 2 · May 28, 2003

Replies: 2

How do I calculate the volume of Earth's oceans?

Simon_Harmon
May 27, 2003 · Replies 8 · May 28, 2003

Replies: 8

Do all EM waves travel through a vacuum?

Dx
May 28, 2003 · Replies 5 · May 28, 2003

Replies: 5

Simple Pendulum Oscillation: Answers and Explanations for Common Test Questions

Dx
May 28, 2003 · Replies 2 · May 28, 2003

Replies: 2

Magnetic fields and current flows problem

Dx
May 27, 2003 · Replies 3 · May 28, 2003

Replies: 3

Understanding SHM: Velocity of a Mass on a Spring at Max Displacement

Dx
May 27, 2003 · Replies 4 · May 28, 2003

Replies: 4

Simple pendulum and angular position

Will
May 21, 2003 · Replies 2 · May 28, 2003

Replies: 2

Electron in magnetic field and TV

S.P.P
May 24, 2003 · Replies 5 · May 27, 2003

Replies: 5

Electric field/charge woed problem

Dx
May 20, 2003 · Replies 2 · May 27, 2003

Replies: 2

How Do You Calculate Capacitance and Electric Potential?

Dx
May 20, 2003 · Replies 2 · May 27, 2003

Replies: 2

How Far is the Proton from the Electron in an Electric Field?

Dx
May 20, 2003 · Replies 2 · May 27, 2003

Replies: 2

Finding g from the simple pendulum period formula

physicsismylife
May 25, 2003 · Replies 3 · May 26, 2003

Replies: 3

What is the power input to the plant?

JM2107
May 25, 2003 · Replies 8 · May 25, 2003

Replies: 8

How do massive objects bend light and relate to the 1919 eclipse?

JM2107
May 18, 2003 · Replies 2 · May 25, 2003

Replies: 2

Does doubling temperature double average molecular speed?

Dx
May 18, 2003 · Replies 2 · May 25, 2003

Replies: 2

How Does Isothermal Expansion Affect Work and Entropy in an Ideal Gas?

Dx
May 17, 2003 · Replies 2 · May 24, 2003

Replies: 2

Electric current flowing in a nichrome wire

Dx
May 22, 2003 · Replies 4 · May 24, 2003

Replies: 4

Sites containing original problems

Will
May 18, 2003 · Replies 6 · May 23, 2003

Replies: 6

Rotational Dynamics/Angular Momentum

discoverer02
May 22, 2003 · Replies 2 · May 22, 2003

Replies: 2

Finding the angle for maximum light intensity through three polarizers

Will
May 21, 2003 · Replies 3 · May 22, 2003

Replies: 3

Taking science GCSEs this year

Viper
May 22, 2003 · Replies 2 · May 22, 2003

Replies: 2

What Is the Equilibrium Temperature of Copper in Water?

Dx
May 15, 2003 · Replies 2 · May 22, 2003

Replies: 2

Is there a formula for energy associated with x-rays?

dagg3r
May 15, 2003 · Replies 2 · May 22, 2003

Replies: 2

Calculating Radioactivity: 4000 cpm to bq

dagg3r
May 15, 2003 · Replies 2 · May 22, 2003

Replies: 2

Waves and beats homework: parade marchers, explosions, tuning forks

miyuki9
May 21, 2003 · Replies 2 · May 21, 2003

Replies: 2

Reducing 3-phosphoglyceroylphosphate in gluconeogenesis

HazZy
May 21, 2003 · Replies 7 · May 21, 2003

Replies: 7

Electrical Circuit Analysis with C++ Issues

bishwa
May 20, 2003 · Replies 4 · May 21, 2003

Replies: 4

What temperature will water boil at 5895m elevation on Mt. Kilimanjaro?

BEVIN
May 19, 2003 · Replies 2 · May 21, 2003

Replies: 2

What is the change in KE of the proton?

Dx
May 20, 2003 · Replies 4 · May 21, 2003

Replies: 4

Last-minute concept problems (before exams)

Flame
May 21, 2003 · Replies 15 · May 21, 2003

Replies: 15

Seriously stumped by rotational motion

discoverer02
May 14, 2003 · Replies 28 · May 20, 2003

Replies: 28

Solving a Simple Vector Problem

Einstein
May 12, 2003 · Replies 2 · May 20, 2003

Replies: 2

What is the charge on 1kg of protons?

Dx
May 18, 2003 · Replies 2 · May 20, 2003

Replies: 2

Why Does a Charged Particle in a Magnetic Field Perform Circular Motion?

KLscilevothma
May 19, 2003 · Replies 3 · May 20, 2003

Replies: 3

Concave mirror image position and refraction through glass plate

Prime
May 18, 2003 · Replies 9 · May 19, 2003

Replies: 9

Electric charge and elctric filed

Dx
May 18, 2003 · Replies 2 · May 19, 2003

Replies: 2

How Long Will It Take for the Sun to Convert 12% of Its Hydrogen into Helium?

ant284
May 18, 2003 · Replies 4 · May 19, 2003

Replies: 4

Solving a Spinning Disk Physics Exam Problem

discoverer02
May 18, 2003 · Replies 3 · May 19, 2003

Replies: 3

How Does Impulse Affect the Motion of a Rotating Rod on a Frictionless Table?

discoverer02
May 18, 2003 · Replies 2 · May 18, 2003

Replies: 2

Solving a Dog Whistle Sound Problem: Finding the Frequency of Brand X

Dx
May 18, 2003 · Replies 2 · May 18, 2003

Replies: 2

Introductory Physics Homework Help Forum

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