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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What Are the Energy Transitions in a Hypothetical Atom When Exposed to Light?
- m_physics
- · Replies 5 ·
Bright Fringes (Intro to Quantum Physics Qestion?)
- megaoka
- · Replies 2 ·
Electron transition from n=4 to n=2 and photoelectric effect on silver
- beibixx
- · Replies 7 ·
The Energy Levels and Frequency of a Particle: Calculating E, p, and KEmax
- beibixx
- · Replies 4 ·
System of particles, linear momentum (easy problem)
- lemonpie
- · Replies 5 ·
Unpolrized light passes through 2 polarizers
- Cheezay
- · Replies 4 ·
How to Calculate Satellite Launch Speed for an Elliptical Orbit?
- clarabelle
- · Replies 4 ·
Why Is My Calculation of Angular Momentum Incorrect?
- vorcil
- · Replies 2 ·
Elevator problem: energy, power, intensity,
- Jack Brodie
- · Replies 2 ·
How Does Destructive Interference Occur With Different Sound Wavelengths?
- keemosabi
- · Replies 1 ·
How Does Angular Acceleration Affect Angular Velocity?
- ymehuuh
- · Replies 1 ·
Center Gravity and Moment of Inertia
- ymehuuh
- · Replies 4 ·
Potential Difference Across Resistors in Circuit
- jensenns
- · Replies 2 ·
Impulse-Momentum Theorem and acceleration
- 92_stealth
- · Replies 1 ·
What is the Frequency of the Lower Pitch Tuning Fork?
- whitehorsey
- · Replies 2 ·
Elastic Collision / Energy Preserved
- huntj106713
- · Replies 1 ·
Sound Of Music: 2nd, 3rd, 4th Harmonics of 370 Hz Pitch
- whitehorsey
- · Replies 2 ·
Finding the Cross Product and Angle Between Two Vectors
- yb1013
- · Replies 3 ·
Effective masses of spring-mass systems
- ismaili
- · Replies 6 ·
Escape Velocity Calculation for an Object on Earth
- Stratosphere
- · Replies 9 ·
How Does Water Flow Dynamics Work in a Tank System?
- av8tor
- · Replies 1 ·
Energy per unit area of EM wave
- x^2
- · Replies 1 ·
Why is the sign of the time term negative in EM plane wave equations?
- maxsthekat
- · Replies 4 ·
Find moment of inertia for a door
- XodoX
- · Replies 1 ·
Final Temp of Water Mixture: 28.46°C
- Durin
- · Replies 2 ·
Cylinder+String Rolling w/o slipping
- Imuell1
- · Replies 1 ·
Calculate Density of Ideal Gas at 250 kPa, 4 g, 50 cm^3
- kmkindig
- · Replies 2 ·
Calculating Error in Quadrature Equation: y=10^x with dx and dy Values
- Jack_O
- · Replies 3 ·
How to Calculate Velocity of a 4-Wheeled Vehicle Using a Pulley System
- henry1117
- · Replies 1 ·
Minimum acceleration to prevent cream pie sliding on vertical hand
- Jericho_15
- · Replies 12 ·
Angular revolution deceleration
- vorcil
- · Replies 3 ·
Angular velocity and normal force for a rotating mass on a table
- bahramm
- · Replies 3 ·
Moment of Inertia (Atwood's Machine)
- garyljc
- · Replies 1 ·
Magnetic Force on an a Particle
- mlsohani
- · Replies 3 ·
Force and acceleration of a traveling proton in a magentic field
- Crichar1
- · Replies 2 ·
What is the fundamental frequency of the string?
- mattmannmf
- · Replies 1 ·
How Much Tension Is Needed in a Rope for Specific Wave Properties?
- Jim4592
- · Replies 1 ·
Speed of an Electron and the Magnetic field
- mlsohani
- · Replies 4 ·
Calculating Total Momentum of Objects Moving in Different Directions
- ckaiser813
- · Replies 1 ·
Calculating Peak Current in an LRC Series Circuit
- bgav88
- · Replies 1 ·
Calculate the force on the table
- bahramm
- · Replies 4 ·
Motion in Polar Coordinates problem
- Master J
- · Replies 3 ·
What is the Current in the Left Wire to Create a Zero Magnetic Field at Point C?
- mlsohani
- · Replies 2 ·
How Can You Prove the Efficiency of a Vibrating Spring in a Lab?
- crazy_nuttie
- · Replies 1 ·
Finding particle velocity with electric and magnetic fields
- mlsohani
- · Replies 2 ·
How Is Fringe Spacing Calculated in a Double-Slit Experiment?
- beibixx
- · Replies 2 ·
Momentum of electron from total energy of electron
- umwolv16
- · Replies 3 ·
Electric field at the point within the sheet
- cupcake
- · Replies 1 ·
Magnetism problem for General Physics 2
- Jscrub
- · Replies 16 ·
Relating Δx and Δy in projectile motion
- marational
- · Replies 4 ·
Finding focal length of the eye and identifying myopia/hyperopia
- ahrog
- · Replies 5 ·
Work and Energy Theorem- change in acceleration
- JhonnyO
- · Replies 7 ·
What Is the Wavelength of Ultrasound in the Human Body?
- whitehorsey
- · Replies 4 ·
Calculating Time for Sound to Reach Bottom of Mine Shaft
- whitehorsey
- · Replies 7 ·
Merry-go-round => what is conserved?
- TwinGemini14
- · Replies 2 ·
Ball throws upward, find maximum height
- Amber3046
- · Replies 2 ·
Understanding Fluid Velocity in a Restricted Pipe
- kmkindig
- · Replies 2 ·
Pressure and spring constant problem
- kellyneedshelp
- · Replies 12 ·
How Can I Find the Velocity of a Collision with Only Displacements?
- izzakizza
- · Replies 1 ·
Minimum work for 65 kg student climbing 8.0 m stairway in 12 s
- brentwoodbc
- · Replies 4 ·
Tricky Spring-Mass Problem (Vibrations)
- Saladsamurai
- · Replies 3 ·
Material coursework- young modulus of copper
- roserose
- · Replies 3 ·
Acceleration of a mass-spring oscillation
- Knfoster
- · Replies 6 ·
How Do You Calculate the Mass of an Atom Using a Mass Spectrometer?
- itsmarasilly
- · Replies 1 ·
Why Can't I Get a V-I Curve on My Agilent Oscilloscope?
- Ai52487963
- · Replies 1 ·
Angular Acceleration, 2 Pulleys on common axle
- Xlorep
- · Replies 2 ·
Rotational energy, find minimum, for nitrogen molecule
- Yroyathon
- · Replies 8 ·
Rate of change of radius through a a circular wire loop?
- zyphriss2
- · Replies 1 ·
Energy loss: trouble with signs?
- SbCl3
- · Replies 1 ·
Half Life / Alpha Decay Question - No IDea
- wayneinsane
- · Replies 1 ·
What Is the Correct Ground State Energy of a Neutron in a Box?
- wayneinsane
- · Replies 4 ·
What Is the Distance Between Adjacent Nodes in Superimposed Waves?
- vivekfan
- · Replies 3 ·
Proving time dilation formula for GPS satellites
- Wingeer
- · Replies 1 ·
Vertical Elastic Collision Question
- SO_ME
- · Replies 9 ·
Simple Circuit Analysis - 2 Questions
- Gorz
- · Replies 7 ·
Change in Amplitude with respect to Driven Frequencies
- Azer
- · Replies 3 ·
Acceleration of water drops problem
- abhikesbhat
- · Replies 3 ·
Angular Momentum: Check Answers to Gyroscope Motion Problems
- TwinGemini14
- · Replies 1 ·
Calculate the time of flight of the bolt from ceiling to floor
- M3_EVO8
- · Replies 2 ·
Heat and Kinetic Energy Question
- a_narain
- · Replies 1 ·
Object sliding across ice with acceleration, constant speed, and deceleration
- cash.money
- · Replies 7 ·
How Does Mass and Distance Affect Gravitational Force?
- cash.money
- · Replies 6 ·
How Does a Bead on a Ring Exhibit Circular Motion?
- RoryP
- · Replies 3 ·
What color does a green cloth appear in yellow light
- jsmith613
- · Replies 1 ·
Can a charge at zero electric field move if V is constant?
- Steven7
- · Replies 1 ·
What is the maximum tension in cable ABAD?
- Apprentice123
- · Replies 1 ·
If there's a book resting a a table, (Newton's third law concept)
- myusernameis
- · Replies 2 ·
Why Is the Virtual Image in a Convex Mirror Always Smaller?
- IniquiTrance
- · Replies 3 ·
Calculating the Angle Between the Sun's Diameter and Earth: Radians and Degrees
- XTEND
- · Replies 1 ·
What is the equation for current in a sliding bar in a uniform magnetic field?
- imnophysicist
- · Replies 1 ·
Uncertainty principle regarding wave packet
- maldicion
- · Replies 1 ·
How Do You Calculate the Angle Between Two Forces in Equilibrium?
- BioBabe91
- · Replies 1 ·
Finding index of refraction and wavelength using a laser and diffraction grating
- pfforum
- · Replies 2 ·
Angular acceleration in revs/s^2
- vorcil
- · Replies 3 ·
Solve Energy Word Problem: Find Height Swinging Rope w/ 3.5 m/s Vel
- Thenewbie
- · Replies 3 ·
Elementary Corrective Lens Problem
- EstimatedEyes
- · Replies 2 ·
Why does x equal 2(x₁+x₂) for pulleys and springs?
- Saladsamurai
- · Replies 7 ·
Calculating the Maximum Compression of a Spring
- soul5
- · Replies 4 ·
Why do I get a negative under the square root for the loop speed?
- mike_302
- · Replies 2 ·
Hydraulic, Fluids at Rest Problem (barrel)
- azrida
- · Replies 7 ·