Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
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Image position when first lens image forms beyond second lens
- kkrizka
- · Replies 4 ·
Solving the Physics Problem: Object Thrown Upward with Initial Speed of 8 m/s
- etsie7538
- · Replies 5 ·
Solving River Crossing: Angle for Boat Rowing Across River
- totororain
- · Replies 2 ·
Solving for X given pCosX = 6 and pSinX = 5
- DeanBH
- · Replies 3 ·
Particle dynamics on a cosine path.
- gilgtc
- · Replies 1 ·
What is Saturn's Mass Using Kepler's Laws and Moon Data?
- AnkhUNC
- · Replies 3 ·
What is the frequency of a photon of energy 58eV?
- bruinboy28
- · Replies 2 ·
What is the Angular Width of the First Bright Fringe?
- TheLegace
- · Replies 3 ·
Solving Calc-Based Physics Problems: Object Position and Velocity at t=2s
- possum30540
- · Replies 1 ·
Finding Equilibrium Point Between Two Charges
- Saladsamurai
- · Replies 4 ·
What is the force exerted by a falling rope on a scale with two components?
- SonOfOle
- · Replies 2 ·
Does Using Celsius Instead of Kelvin Affect Thermal Expansion Calculations?
- BioCore
- · Replies 4 ·
How High Are Mesospheric Clouds That Appear 38 Minutes After Sunset?
- ankurb
- · Replies 4 ·
Inelastic collision on a frictional surface
- aesnix
- · Replies 9 ·
Why do security mirrors in shops use convex mirrors?
- forda11
- · Replies 13 ·
Why does uncertainty in position measurement equal the photon wavelength?
- Gunman
- · Replies 2 ·
When to use sine vs cosine for x and y force components?
- r6mikey
- · Replies 2 ·
Wave reflection at a wall with fixed boundary condition
- inferno_gogo
- · Replies 1 ·
Acceleration of blood pumped by heart
- melinaamos
- · Replies 3 ·
Gravity and mass of two objects
- AnkhUNC
- · Replies 4 ·
Distance between the object and the lens
- Libra_girl
- · Replies 6 ·
Absorbed dose of nuclear radioactivity
- planesinspace
- · Replies 4 ·
Bullet drop from rifle aimed at 150 m distant target
- oxblackout12
- · Replies 4 ·
Calculating 238U/235U Ratio for Earth's Age
- planesinspace
- · Replies 4 ·
Pendulum and Centripetal Motion Question
- MaZnFLiP
- · Replies 3 ·
Solving Work and Energy Questions: Skier of Mass 67kg
- islanderman7
- · Replies 1 ·
Why does solving Coulomb's law equations give different results for sphere charges?
- Saladsamurai
- · Replies 4 ·
Getting E-Field from magnetic field intensity, H
- electrifice
- · Replies 1 ·
Calculate inductance of a system
- amisha
- · Replies 1 ·
What is the moment of inertia for a square rod using the parallel axis theorem?
- Iron Eagle
- · Replies 2 ·
Work and Kinetic Energy Question
- MaZnFLiP
- · Replies 2 ·
How can the Second Law of Motion be stated in a non-inertial reference frame?
- fantispug
- · Replies 2 ·
Diode in Parallel Circuit: Effects on Current Flow
- sanado
- · Replies 1 ·
Communication problems No forces at some place in universe?
- matador
- · Replies 2 ·
Kinetic Energy Ping Pong ball Question
- islanderman7
- · Replies 2 ·
Translating acceleration into distance traveled
- Spirochete
- · Replies 3 ·
Method of Energy Distribution Using Transformers
- troubleinphys
- · Replies 2 ·
Bright and dark fringes between two slits - waves
- Libra_girl
- · Replies 4 ·
How Deep Must Water Be Poured Into a Floating Box Before It Begins to Sink?
- shortydeb
- · Replies 6 ·
How Do You Calculate the Spring Constant in a Charged Sphere Setup?
- allyson6018
- · Replies 2 ·
What is the net torque on this object?
- BrooklynBees
- · Replies 6 ·
Kinetic energy of electron ejected by photon from potassium plate
- Aran
- · Replies 3 ·
Monstrous electromagnetism question.
- Swatje
- · Replies 19 ·
Waves: find amplitude, given average power
- wayfarer
- · Replies 1 ·
Two objects connencted - finding KE before one reaches the floor
- crazyog
- · Replies 8 ·
Resolving Distant Objects question
- fatkat444
- · Replies 2 ·
Calculate Electron Flow in 3 Secs
- mp252
- · Replies 3 ·
Kinetic Energy Change with Changing Velocity Directions
- forty
- · Replies 4 ·
Deriving Magnetic Field Through Solenoid Using Amperes Law
- Jjackson
- · Replies 6 ·
Inverse Fourier Transform of Inverse Square Root Function
- liorda
- · Replies 2 ·
Waves - A two-source interference problem
- fatkat444
- · Replies 2 ·
How Fast is the Car Going Based on Passenger Force Components?
- hayowazzup
- · Replies 4 ·
Solved: Calculating Electric Fields from 4 Particles in a Square
- catie1981
- · Replies 5 ·
Calculating Work for Monatomic Gas Expansion
- scholio
- · Replies 4 ·
What Is the Mass of the Second Particle and the Magnitude of the Charges?
- Saladsamurai
- · Replies 3 ·
Help on inclined plane and air resistance.
- TexasCow
- · Replies 12 ·
Is Density Affected By Fluid Speed According To Bernoulli's Principle?
- BrooklynBees
- · Replies 6 ·
Could Gravitational Attraction Explain the Bond Between Man and Dog?
- vandorin
- · Replies 17 ·
Mass defect calculation for carbon-12
- Kylah
- · Replies 3 ·
Where is the electric field zero between two charged particles?
- catie1981
- · Replies 6 ·
Electrostatic force of four charged particles
- catie1981
- · Replies 16 ·
How Does the Pilot's Speed Affect the Observed Falling Speed of a Package?
- soynv
- · Replies 1 ·
How Do You Calculate the Change in Gravity as a Rocket Travels Away from Earth?
- rhines8
- · Replies 5 ·
Finding a Vertical Force given friction and a horizontal force
- crazyog
- · Replies 4 ·
What is the mass of the oscillator in an oscillating mass-spring system?
- Dangelo
- · Replies 15 ·
How Is Angular Momentum Conserved in a Rotating Square Frame?
- kidsmoker
- · Replies 5 ·
Location where charge is cancelled out
- scholio
- · Replies 3 ·
How Does Light Travel Through a Gradually Changing Refractive Medium?
- yoran
- · Replies 3 ·
How the intensity of light emitted by a lamp varies with wavelengt
- xraox
- · Replies 31 ·
Magnetic/electric particle deflection
- scholio
- · Replies 12 ·
How Do You Calculate the Charges on Two Pieces After a Split?
- scholio
- · Replies 3 ·
Finding the center of mass by integration.
- tfmfyn
- · Replies 2 ·
Pendulum - Kinetic Energy at Lowest Point?
- crazyog
- · Replies 2 ·
Calculating Tension in Mass on a Slope with Standing Waves
- roam
- · Replies 7 ·
How Do Perfectly Inelastic Collisions Lead to Maximum Kinetic Energy Loss?
- nothing123
- · Replies 4 ·
Capacitance of parallet plate with dielectric spheres in between
- amisha
- · Replies 2 ·
Centripetal force for a minibus rounding a bend
- raphile
- · Replies 1 ·
Problem involving kinetic friction and relative accelerations
- tfmfyn
- · Replies 3 ·
Thermodynamics ice and water bath
- scholio
- · Replies 12 ·
Electrical Circuit Calculations
- NavitaLaVida
- · Replies 15 ·
Conceptual Pressure Question: Fluid Pressure in a U-Tube
- mantillab
- · Replies 1 ·
Can Knowing All Forces Predict an Object's Movement Direction?
- forty
- · Replies 7 ·
Ideal Gas Carnot Cycle: Temperature and Entropy Analysis
- scholio
- · Replies 5 ·
Tension in crane cables lifting 500 kg load at 2 m/s²
- NavitaLaVida
- · Replies 10 ·
Why Does UV Light Cause Sunburn But Visible Light Does Not?
- clarkandlarry
- · Replies 6 ·
Solving Voltage/Current in Resistor Circuits
- alksjadf
- · Replies 33 ·
Change in entropy for adiabatic expansion then constant-pressure compression
- scholio
- · Replies 2 ·
Conservation of energy, determining the speed from the change in position
- zakare
- · Replies 4 ·
What Are the Final Pressure and Temperature of an Adiabatic Gas Compression?
- terry2112
- · Replies 5 ·
Simple Harmonic Motion Equation with Period and Initial Conditions
- Ed Aboud
- · Replies 4 ·
Longitudinal wave diagram for physics exam
- Zoheb Imran
- · Replies 1 ·
What is the tension in the string immediately above the block?
- hayowazzup
- · Replies 11 ·
By what percentage does reducing length and width by 15% reduce area?
- SBains88
- · Replies 12 ·
Which action would prevent a fracture in the cyclist?
- nothing123
- · Replies 4 ·
Variable Velocity Vehicle Project
- OpenLaszlo
- · Replies 4 ·
How Does Monochromatic Light Create a Bright Fringe in a Double Slit Experiment?
- oceanflavored
- · Replies 6 ·
Practical Applications of Converging Lenses: Object Positions and Uses
- blah:p
- · Replies 3 ·
Electrical Force Decreased by 1/4 When Particles Moved Half as Far Apart
- weemanbran
- · Replies 4 ·
How Many Photons Are Reaching Your Radio When Listening to 100 MHz FM Station?
- clarkandlarry
- · Replies 9 ·
Does a Blackbody at 200K Emit Twice as Much Radiation?
- clarkandlarry
- · Replies 3 ·