Introductory Physics Homework Help Forum

Horsehoe Bats, Insects, Speed and the Doppler Effect

How Much Steam Is Needed to Melt Ice into Water at 20 Celsius?

Why consider only one mass in S.H.M. problems

Hi and point charge vector question

Lenses - Thin-Lens Equation and Magnification Equation

Difficult kinematics/power question

Calculating Final Velocity for a Dropped Golf Ball

Rotational Motion Force Question

Conservation of Energy and frictionless pulley?

Polarizability of Liquid Helium

Engery- Falling Coffee Filter Problem

I'm inventing my own physics problem for extra credit thermodynamics and fluids

Complicated spring stretch (compression )

How Do You Calculate a Ship's Velocity Given Its Direction and Displacement?

What Are the Mechanical Advantages and Efficiencies in an Inclined Plane System?

Vector Addition - Find Angle of Resultant Force

Calculate the acceleration for a ball bearing

Conservation of Energy object of mass

How Is the Period of a Satellite Calculated?

Potential Change in a Circuit Diagram

Solved: R Vectors in Different Drawings Same Magnitude?

How Did a Supernova Influence the Unique Composition of a Solar System?

When Does the Package Reach the Ground?

What is the angular velocity of the sun?

Expression for the force on a particle

Solving Spinning Animals Problem with Negligible Mass and Length

How Is Velocity Calculated in a Compound Ballistic Pendulum Experiment?

How Does Elevator Acceleration Affect Object Weight?

What is the speed and normal force of a bead sliding around a loop-the-loop?

Differences in kinetic friction coefficents

Is Momentum Conserved with Just the Ball and Player in a Jump Ball Scenario?

Elevator reaching cruising speed: is the average power calculation correct?

How Does Friction Affect Work Done on an Incline?

How Many Revolutions Does the Smaller Disk Make Around the Larger Circle?

Electric field from coaxial conducting rod and shell using Gauss' law

Angular acceleration of a Propeller

Electrostatic force after two charged spheres touch

How Does the Direction of a Magnetic Field Affect Induced EMF in a Loop?

Why does maximum speed occur during spring compression in AP Physics C exam problem 2?

Why Does Hot Water Freeze Faster Than Cold Water?

Work and kinetic energy of two blocks

Number of Forces Doing Work on Box on Incline

Calculating Solar Energy Needed for $1000 Worth of Electricity

Finding Mass and Speed in Kinetic Energy Problems

Finding acceleration from two force vectors

Doppler shift from moving trumpet on train

Working with two moving targets ?

Calculating the Final Height of Chris's Bungee Jump

• Poll

Gravitational force = 0 between two planets?

How Does Inserting a Dielectric Affect Voltage in an Uncharged Capacitor?

Frequency of laser in eye fluid given wavelength and refractive index

Boat light distance when it strikes bottom.

Sound intensity: finding distance from 95 dB at 5.0 m to 75 dB

Percent uncertainty of momentum

Angular Acceleration during Bowling

Van de Graaff field potential energy and capacitor bulb problem

Capacitor Circuits: Battery Removal Effects

How long is a kangaroo in the air jumping to 2.8m height?

Magnetic Field due to a current loop

Want to know correct answer for electric field + potential question

What is the Total Outward Force Exerted on a Pool's Vertical Wall?

Nitrogen Gas Molecule Speeds and Temperature Relationship

Does a 3 kg block bounce off a spring after compression with static friction?

Thermodynamics and ice melting.

Acceleration of a block on the floor

What Is the Maximum Weight a Flowerpot Can Be Supported By Two Cables?

What is the required altitude for geosynchronous satellites above the Earth?

How Can I Effectively Learn Physics on My Own as a High School Student?

Solution for Elastic Collision of Three Identical Billiard Balls

How Do You Calculate Power Dissipation in a Double Loop Circuit?

Standing broad jump on the moon

Projectile motion: skier leaves ramp at 25°, lands 100 m away

Momentum and kinetic energy questions

Calculating % Change in Inductance of Search Coil in Metal Detector

Angle refraction from a point on glass.

Calculating Clay's Acceleration: 12.0 m Fall

Angular momentum calculation with r × mv determinant

Percentage of kinetic energy after an elastic collision

Minimum release angle for pendulum to clear peg at height L/3

Centripetal Acceleration Part II

Weight in Terms of Distance From Earth

What Is the Correct Calculation for Satellite Speed in a Stable Orbit?

Highest harmonic in closed pipe with 45cm length

How Do You Calculate the Camera's Velocity in an Astronaut Momentum Problem?

Changing axis of a rotating wheel

Required torque for 1000kg car to accelerate with 4 wheels

How to Find a Unit Vector in the Direction of a Given Vector

Choosing a mechanics topic for a group paper and presentation

Oh really? potential difference sucks

Solve Spring SHM Problem: Period of Oscillation in M1, M2, k

Elastic collision, one dimension

Solve Proton Bombardment Homework: Find Vf in m/s

Finding acceleration of a book sliding down an incline with friction

What is the surface charge density sigma?

Static electricity and electrons

Elastic collision between 10g and 15g objects moving opposite directions

Using Newton's Second Law for a System of Particles

Speed and tension of a 0.12 kg pendulum at 45 degrees

Current, Voltage Really Easy Question

More frustrating force problems,