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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Calculate energy and momentum of a hydrogen atom in a photon emission transition
- rayman123
- · Replies 4 ·
Express Max height in terms of g and T? ?
- scke0803
- · Replies 3 ·
Why inertia alone doesn't keep Earth orbiting the Sun
- redneckman454
- · Replies 1 ·
Field Goal Projectile Problem: Time to Score!
- physicsguy98
- · Replies 1 ·
Mass of Particle in 0.200T Magnetic Field
- taylor.simon
- · Replies 1 ·
Calculating Velocity of 100g Mass to Describe Circle on Table
- Procrastinate
- · Replies 5 ·
"Find Out 1 meV in Å from E1/2 Equation
- Niles
- · Replies 1 ·
Determining a smooth motion when given a function
- vande060
- · Replies 3 ·
Vectors ; specifically cross product application
- kapitanma
- · Replies 4 ·
Velocity of sound in air in a closed air column
- enirak
- · Replies 17 ·
Analysis of Person Diving into Pool w/ Uniform Horizontal Beam
- ana111790
- · Replies 6 ·
Integrating to find velocity and position equations
- uchicago2012
- · Replies 1 ·
Trouble with a classic statics problem
- Candalite
- · Replies 1 ·
Projectile Motion - Only given time and range
- hogrampage
- · Replies 1 ·
Radius of curvature of a point on a rolling wheel
- Hogger
- · Replies 1 ·
Average acceleration of a man walking from t=2 to t=8 min
- praecox
- · Replies 2 ·
Solving Vector Components: East-West and North-South Directions
- mandi182
- · Replies 3 ·
Electric Field at Point P on Spherical Shell Insulator
- heartofaragorn
- · Replies 6 ·
Calculating Time for Rectangular Block to Stop on Rough Ground
- gaobo9109
- · Replies 1 ·
Vector Problem involving Cartesian plane
- proster
- · Replies 2 ·
How to solve for x in (1/3)x + (1/4)y = x/a
- Vondutch
- · Replies 1 ·
Velocity and Acceleration of motorcycle
- sasspup29
- · Replies 3 ·
Solution manual for Statistical Mechanics by Pathria
- saiarun
- · Replies 5 ·
What is the Wavenumber and Transition for an H-Atom with n=732 to n=731?
- rayman123
- · Replies 1 ·
Capacitors in series and electric potential
- totalphysnoob
- · Replies 4 ·
Help with capacitor problem
- uniastroboy
- · Replies 2 ·
Kinematics Question Involving Submarine
- ahsanxr
- · Replies 2 ·
Understanding Vector Multiplication: Why Does Cross Product Result in a Vector?
- f24u7
- · Replies 1 ·
Finding Distance with Mechanical Energy Problem
- raisatantuico
- · Replies 5 ·
Calculating Peak Charge and Total Energy
- ProPatto16
- · Replies 3 ·
Why does water narrow as it falls from a tap?
- rishicomplex
- · Replies 1 ·
Drawing a vector from the x and y components.
- adare
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How do we calculate the Max value of x?
- osy044
- · Replies 1 ·
Kinematics Question. Car's acceleration
- chemoments
- · Replies 1 ·
Minimum Constant Acceleration for Aircraft Liftoff
- delfam
- · Replies 5 ·
Electron moving between 2 charged plates
- juggalomike
- · Replies 1 ·
Finding distance to Mars using angle from Earth with circular orbits
- Soulax
- · Replies 4 ·
Approximating Area of Region Bounded by y=sin(x) and x=0 to π
- kings13
- · Replies 1 ·
Ask me some conceptual questions on waves?
- donkeycopter
- · Replies 2 ·
Finding Magnitudes of Vectors Using the COMPONENTS Method
- crossxfire2
- · Replies 4 ·
What Is the Initial Velocity of a Particle Accelerating for 0.350s?
- swatmedic05
- · Replies 3 ·
Automobile accelerating at 2.0 m/s² overtakes truck at 9.3 m/s
- kittykatxox
- · Replies 3 ·
How Do You Calculate Electric Field Components for a Uniformly Charged Rod?
- jason177
- · Replies 2 ·
The hot-air ballon intersection question.
- aeabdo11
- · Replies 4 ·
How Do I Solve a Parallel Circuit Problem?
- fcb
- · Replies 3 ·
Why is my motional EMF current calculation giving 0.0043 A?
- pat666
- · Replies 6 ·
Why Does Static Friction Cause Torque in a Rolling Ball?
- raisatantuico
- · Replies 3 ·
Accelerating a Car: Min Time to Reach Speed v
- Kyoma
- · Replies 3 ·
Why is acceleration negative for a brick thrown upward?
- mizzy
- · Replies 4 ·
Peak EMF in Generator Coil at 90.0 Hz: 0.012V
- ProPatto16
- · Replies 3 ·
What Causes Electrons to Revolve Around the Nucleus?
- m00ni
- · Replies 4 ·
How to find fundamental frequency
- ngcg
- · Replies 4 ·
Charged shpere inside grounded shell
- Terocamo
- · Replies 3 ·
Solving for Magnetic Flux in a Square Loop
- louza8
- · Replies 2 ·
Find strength and direction of electric field
- sheepcountme
- · Replies 3 ·
How to Construct Best Fit, Min and Max Slope Lines with Error Bars for Graph?
- curiousgeorge99
- · Replies 7 ·
Curvature/centrifugal force problem
- TroyWeathers
- · Replies 2 ·
Deriving Vf² = Vi² + 2ax with calculus and canceling differentials
- madah12
- · Replies 3 ·
Speed and velocity homework: units, conversions, and calculations
- Meme:D
- · Replies 2 ·
Mass a helium balloon can overcome
- StheevilH
- · Replies 6 ·
Velocity Time Graph to calculate resistive forces
- vf_one
- · Replies 3 ·
Marathon runner velocity problem
- Allura
- · Replies 4 ·
Calculating the angle of the force exerted on a pulley
- riddle
- · Replies 18 ·
Basketball bouncing: finding max height from bounce time
- eriadoc
- · Replies 6 ·
Calculating Velocity of Bowling Ball at 3.0s
- Allura
- · Replies 2 ·
Calculating Time for Arrow to Stop Moving Respect to Block
- aggieboy
- · Replies 2 ·
Which car has the greater deceleration rate?
- theman12
- · Replies 2 ·
Energy emitted by radiation from a pipe
- Karol
- · Replies 2 ·
What is the speed of a falling bolt in an upward-moving elevator?
- enderAM
- · Replies 4 ·
Setting intantaneous velocity equal to average velocity
- vande060
- · Replies 9 ·
Electric Field at the Center of a Triangle
- Brandone
- · Replies 2 ·
Deriving the Equation for Final Velocity Using Kinematic Equations
- zeion
- · Replies 2 ·
Understanding Spring Balances and Series Setups
- shyta
- · Replies 6 ·
Maximum angle of deflection after collision
- osy044
- · Replies 1 ·
Laws of motion/vectors question?
- ooohlala
- · Replies 7 ·
Charged Particles in Electric and magnetic fields
- sarahdee
- · Replies 5 ·
Single slit diffraction: distance between 1st and 2nd dark fringes
- MetsFan09
- · Replies 3 ·
A problem of strings, pulleys and weights
- The legend
- · Replies 8 ·
Finding resistance (electric circuit)
- Acuben
- · Replies 1 ·
Find Solution for Electrostatic Force Neutralization
- popo902
- · Replies 3 ·
MATHS INTEGRATION, Wont let me post in calculus forum
- ProPatto16
- · Replies 9 ·
What is the distance and direction between city A and city C?
- hrgardner33
- · Replies 3 ·
Converting hair growth rate to nanometers per second
- GoBlue03
- · Replies 1 ·
Finding position from velocity with integration
- ana111790
- · Replies 1 ·
What is the final velocity of a dropped package in free fall?
- jpd5184
- · Replies 2 ·
"Solving for a to Make Vector A a Unit Vector
- f24u7
- · Replies 1 ·
Electrostatic force of Repulsion
- popo902
- · Replies 4 ·
Thermodynamics ice cube problem
- Jeffopolis
- · Replies 5 ·
Height at which two balls collide traveling opposite direcitons
- Tachypsychia
- · Replies 3 ·
Solving Car Stopping Distances and Decelerations
- busbus
- · Replies 3 ·
Finding vertical displacement in terms of a function of two heights.
- thepatient
- · Replies 1 ·
RMS Current in an AC Generator with Doubled Rotational Speed
- Terocamo
- · Replies 4 ·
Instantaneous velocity electron
- jpd5184
- · Replies 26 ·
Finding voltages across capacitors under DC conditions
- ravensfan
- · Replies 2 ·
Find total force resisting motion.
- Bananahat
- · Replies 2 ·
Relativity - Length Contraction
- pat666
- · Replies 2 ·
Heat released when 500g of water vapor condenses
- glori1988
- · Replies 3 ·
Solving for time and final velocity in a basic physics equation
- tomtomgreg
- · Replies 2 ·
What Is the Minimum Average Speed Required to Catch the Ball?
- sdrohrig
- · Replies 1 ·