Introductory Physics Homework Help Forum

Why Do Rubbed Materials Attract or Repel Each Other?

How Fast Must the Enterprise Travel to Shorten 85 Light Years to 20?

Why a timelike vector and a null vector cannot be orthogonal?

What Is Julie's Average Speed to and from Grandmother's House?

Physics average velocity problem

What Is the Difference Between Mathematical and Physical Vector Spaces?

Calc Question: Finding Secant Slope?

Interpret Hexadecimal Dump in Computer Science

Moving particle with rest mass double its kinetic energy

Physics dimensions of acceleration question

Convergence and Monotonicity in Limits Verification

What are some potential research questions for an IB Extended Essay in Physics?

The Cauchy-Schwarz inequality for real numbers

Solving the Monkey-Zookeeper Problem: Minimum Velocity Needed

Leap River: Solve for Initial Velocity w/o Air Resistance

Why does (√(n+1) − √n)√(n + 1/2) → 1/2 when √(n+1) − √n → 0?

Finding speed and momentum when rest mass equals double kinetic energy

Can't figure out where to go with this (Centripital Acceleration)

Electric Field/Oscillation Problem

How far has the proton been deflected?

Frequency and wavelength of a wave

Find the max altitude reached by the rocket

Rotational Motion of a disc of mass

Phase difference of reflected sound waves in a hallway

Electric field of two charges on an axis bisecting them

Solving the Spool's Acceleration with a Constant Force

Do Smaller Tires Increase Traction on Wet Roads?

Oil slick area with one-molecule thickness

How Do You Convert Old English Length Measures to Modern Units?

Show that the force applied by each rope

What are the powers required for dimensional consistency in a simple pendulum?

What is the mass difference between two charged objects with opposite charges?

Methods for determining stellar composition and interpreting line spectra

Pendulum clock error with thermal expansion and faulty barometer

Integrate f(t)f'(t) on [a,b] and Show 1/2[f''(b)-f''(a)]

How can I graph the pendulum function without knowing the constants?

Finding log_c(√12) given log_c 3 and log_c 2

Finding the differential equation for the real part of a complex solution

How Many Logs Are Needed to Build a Raft for Four People?

Find Radius to Calculate Mass of Moon

Classifying stars using spectral lines from hydrogen, helium, and calcium

Air Bubble Volume at Water Surface

Uncertainty Calculation for a Complex Formula with Known Errors

Proving the definition of abs. value

What do logic gates do and why are they needed in computers?

Fundamental Theorem of Calculus

Finding Unit Vectors for Angle of pi/3 in R3

How Do You Calculate the Error on Variables in an Equation?

Find the exact value of tan 285 deg + cos 75 deg + cot 60 deg

Can you use momentum conservation to support your friend's case in court?

How Do You Convert a Transformed Function into Standard Form?

Calculate the Height of a High Rise Building with Trig Word Problem

EN to the parallel axis theorem.

Antoine L'Hôspital's rule problem

Finding q1 when q2 is in static equilibrium using Coulomb's law

How to Input a Unit Vector Between X and Y Axes in Mastering Physics

Why did Mexico seek independence from Spain?

How Does Wind Speed Affect Voltage in a DIY Anemometer-Generator?

• Poll

The max. distance of fall of the bungee jumper?

How to Solve a Tricky Exponential Equation

Sound wave and a light wave that pass through a piece of plastic

Limit of ln(1+sin x)/x as x approaches 0

Do I need to master permutation and combination before learning probability?

Solving F=GmM/r^2 for r: What's Next?

How Do Normal Forces Affect a Ladder's Motion Against a Frictionless Wall?

Minimum Speed for Cliff Diving to Avoid Ledge: What Equation to Use?

Horizontal Distance of Cannon Fired at 30 Degrees: 85,000m

Car driven off platform at 20m/s: why is impact speed 26.3 m/s not 17.15?

What is the effective resistance in this circuit with two shorts?

Finding N values for n/2^n < 1/ε using the limit proof

Sum convergence - is my approach flawless?

Solve Rotational Motion: Show Tension = 1/3 Disk Weight

How Much Will the Beam Deflect?

Why does light reflect off a blanket in many different directions?

My Crazy math teacher says this is solvable

Covariance of the Wave Equation in Modern Physics: A Proof

Why does wave speed increase with water depth?

Minimum speed at top and maximum speed at bottom for a ball whirled on a string

Starting on elastic collisions

Weight of chain suspended with 25 N tension at 37°

Coulomb's Law of two copper spheres

Does water mass or container volume determine force on the bottom?

Where does energy come from when a helium balloon rises?

Why doesn't a cup slide off when pulling a cloth quickly from under it?

Finding the largest number if 8 consecutive numbers average X

Scale reading when elevator is decelerating upward

What is the area of the gold leaf and the length of the gold fiber?

Why did chicken broth reach the bottom before pea soup in the ramp race?

Questioning photoelectric effect theory

Kinematics of pumpkin shot out of air cannon

The Speed of Sound (Trick Question?)

Why Does a Series Circuit Show Zero Potential Difference Despite Components?

Two distinguishable particles space-spin wavefunctions

Induced Magnetic Field in Dielectric

Electric field intensity for a uniformly charged wire.

Radius of gyration of a diamond with 0.5m sides

Why Does the Limit of Sine at Infinity Confuse Mathematicians?

Solving Liquid Problems: Calculating Forces and Height Differences

Autonomous Differential Equations: Equilibrium Solution and Deviation Equation

Total charge of e in a given volume of water