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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Magnitude of Forces exerted by charges.
- genu
- · Replies 5 ·
Wave on a string: time from y=2mm to -2mm. Amp. & Omega given. Best method?
- deltapapazulu
- · Replies 1 ·
One Dimensional Baseball Kinematics
- pointintime
- · Replies 4 ·
PC Cell Efficiency: Find Power (in W)
- rosie_burk
- · Replies 1 ·
Projectile Motion & Theta: Finding Tan (Theta) Using Equations of Motion
- DCC01
- · Replies 2 ·
Solving Pressure in U-tube with Different Densities
- songoku
- · Replies 4 ·
Is Tension Always Equal to Weight in Physics Problems?
- cerberus9
- · Replies 17 ·
How Fast Does a Baseball Accelerate During Pitching Motion?
- pointintime
- · Replies 3 ·
How Do You Calculate Energy Supplied in Different Time Intervals of a Circuit?
- smith5753
- · Replies 1 ·
What Speed Should Jane Walk to Match John's Arrival Time?
- behnz06
- · Replies 18 ·
Electric potential energy to kinetic energy
- cerberus9
- · Replies 7 ·
Not sure about shape of this quantum well
- Davio
- · Replies 33 ·
Electric potential energy and electric potential.
- cerberus9
- · Replies 4 ·
Proving the Equation: <N> = 1 / exp (E-U)/KT +1 from Zg = 1 + Exp (-E-U)/KT
- Zophixan
- · Replies 15 ·
Why is Coulomb's Law Limited to Point Charges?
- supreabajaj
- · Replies 4 ·
What is the average value of a simple harmonic function over one cycle?
- Eric_meyers
- · Replies 7 ·
Is work a scalar or a vector quantity and why?
- supreabajaj
- · Replies 2 ·
Finding Launch Velocity and Maximum Height of a Toy Rocket Passing by a Window
- pointintime
- · Replies 5 ·
What is the difference between Inertia and Interaction?
- darkmagic
- · Replies 1 ·
Double Glazing: Heat Loss Explained
- Gringo123
- · Replies 2 ·
Simple harmonic motion of the earth
- monty37
- · Replies 2 ·
If angle lies in second Quadrant?
- HussanAli
- · Replies 5 ·
Density of a Compressed Sphere: Does Halving the Radius Double the Density?
- snubbly
- · Replies 14 ·
Loop problem, critical velocity
- Isiudor
- · Replies 6 ·
How do I compute magnetic flux?
- austin007
- · Replies 6 ·
Simple harmonic motion involving circuit
- Eric_meyers
- · Replies 1 ·
Why Is the Average Speed Not Simply the Arithmetic Mean of Two Speeds?
- marco101
- · Replies 1 ·
Energy in Simple Harmonic Motion
- adkinje
- · Replies 1 ·
Gravitational pull of Earth and Moon on spaceship
- mckayl2
- · Replies 1 ·
Frictionless Pulley with two weights
- Jotun.uu
- · Replies 5 ·
Current / Magnetism Questions: Proton near magnetic field of moving electrons
- ninjadrummer8
- · Replies 3 ·
Potential Energy of Masses on a Pivot
- adkinje
- · Replies 3 ·
Percent Uncertainty in Spherical Beach Ball Volume
- George3
- · Replies 6 ·
Simple harmonic motion of two springs
- Eric_meyers
- · Replies 5 ·
Solving Schrödinger Eq. for Harmonic Oscillator
- Azorspace
- · Replies 4 ·
Can You Solve These Physics MCQs and Graph Analysis Problems?
- roy219
- · Replies 20 ·
Magnitude of the resulting magnetic field
- austin007
- · Replies 4 ·
Calculate Charge: Find Q at Center of Hollow Sphere of Radius 20 cm
- austin007
- · Replies 4 ·
Static friction between two bodies and a surface
- Isiudor
- · Replies 32 ·
Parallel Current-Carrying Wires and Magnetic Force
- Soaring Crane
- · Replies 2 ·
Calculating EMF for Disk of Area 0.003m2 in Perimeter
- nugget
- · Replies 1 ·
Proving Total Current through Insulating Wire Using Spherical Coordinates
- iontail
- · Replies 3 ·
How Much Air Is Needed to Lift a Sunken Steel Ship?
- demonelite123
- · Replies 1 ·
Understanding Orbital Motion: Comparing Satellite Weights in Different Orbits
- rachael
- · Replies 6 ·
One dimensional motion problem, overcoming head start
- creechur
- · Replies 2 ·
Another One Dimensional Motion Problem
- pointintime
- · Replies 10 ·
Block moving down an inclined plane, spring problem.
- Dealucis
- · Replies 5 ·
Easy One Dimensional Kinematics
- pointintime
- · Replies 37 ·
Investigating pendulums for physics
- EpsilonTheta
- · Replies 17 ·
New planet that doesnt fit with kepler's 3rd law
- edoarad
- · Replies 3 ·
Harmonic Motion: Collision Calculation
- wilson_chem90
- · Replies 14 ·
Why Does the Thermal Conductivity Calculation Differ Between Sources?
- VillageIdiot
- · Replies 15 ·
Would like to double check my work. Mostly F=ma if I'm right.
- nkotb
- · Replies 10 ·
Calculating Gravity and Orbital Speed of Mercury at Mean Distance from the Sun
- vasfinest18
- · Replies 10 ·
How Long to Accelerate for Desired Time?
- pointintime
- · Replies 62 ·
Gravitational Field Related Question
- wilson_chem90
- · Replies 5 ·
Conversion to lux (Light intensity)
- Petrucciowns
- · Replies 3 ·
Proving the Relationship Between \omega, \lambda and c
- mrausum
- · Replies 1 ·
What is the Initial Speed of Linked Spacecraft in an Inelastic Collision?
- wilson_chem90
- · Replies 11 ·
What is the size and direction of the force on each segment in this gif?
- krot
- · Replies 3 ·
What is the Result of i X i in a Cross Product?
- krot
- · Replies 5 ·
Cross product question of j ,k
- krot
- · Replies 2 ·
Where Is the Mistake in My Magnetic Field Logic?
- krot
- · Replies 5 ·
Conservation of energy of a basketball
- Amar.alchemy
- · Replies 5 ·
Calculate dieter for maximum exit speed
- semc
- · Replies 9 ·
Projectile Problem: Finding Max Range & Height, Time to Reach Ground
- John 123
- · Replies 11 ·
How Do You Calculate Tension and Speed in Circular Motion?
- krej
- · Replies 11 ·
Stupid Question About Finding the Angle of a Vector
- Saladsamurai
- · Replies 2 ·
Floating Bed Problem: Calculate Volume Under Water
- iamtrojan3
- · Replies 1 ·
Torque T & Its Work: No Gravity, No Friction
- kyiydnlm
- · Replies 6 ·
How can I display Greek letters in legends using Octave plot?
- Angelos K
- · Replies 10 ·
Finding the Vertex Coordinates of a Rectangle In Cartesian Space
- Saladsamurai
- · Replies 3 ·
Solve Electrostatics MCQ with Explanation
- Rajat jaiswal
- · Replies 2 ·
Finding Centripetal Force in a Closed-Loop String
- dragonlorder
- · Replies 5 ·
Electric Potential Energy of a sphere
- mrxtothaz
- · Replies 5 ·
Finding the Speed of a Block on a Roller Coaster
- iamtrojan3
- · Replies 5 ·
Stagnation pressure and Stagnation Points
- mikeyboy22
- · Replies 8 ·
How Does Air Resistance Affect Vehicle Acceleration and Deceleration?
- Gwilim
- · Replies 3 ·
Deriving the Formula for Average Velocity with Constant Acceleration
- demonelite123
- · Replies 6 ·
How do you use a Rotation Matrix in 2-D?
- Saladsamurai
- · Replies 3 ·
How can I determine the required force to balance a pivoted metal sheet?
- controlfreaks
- · Replies 10 ·
Index of refraction of the prism
- {smile}
- · Replies 15 ·
How many Coulombs of positive charge are in 1.0 mol of O2 gas?
- burritofiend
- · Replies 2 ·
Thermal Expansion of Aluminium Sleeve over Steel shaft
- hemetite
- · Replies 1 ·
Angular/Linear Velocity Problem
- controlfreaks
- · Replies 5 ·
How Strong is the Gravitational Field on a Neutron Star's Surface?
- skydiver
- · Replies 6 ·
How Should a Plank Be Supported for Balance with Unequal Weights at Its Ends?
- alexo
- · Replies 1 ·
How Do You Calculate Frequency and Period for a Mass on a Spring?
- Brownie7
- · Replies 1 ·
What is the angle of a ramp given a marble's velocity and time of descent?
- KDawgAtsu
- · Replies 6 ·
How Do You Calculate the Frequency of a Pendulum?
- Brownie7
- · Replies 1 ·
Water Wave Physics Problem: Calculating New Wavelength in Refraction Zone
- {smile}
- · Replies 18 ·
How Far Can a Ball Travel Based on Launch Conditions?
- jumpingjack90
- · Replies 1 ·
How Is Gravitational Pressure Calculated in a Contracting Gaseous Sphere?
- Himanshu
- · Replies 1 ·
Calculating Lift Force for a Helicopter and Car System
- MorganJ
- · Replies 9 ·
Can Spring Constants Be Negative?
- {smile}
- · Replies 2 ·
What Is the Spring Constant of the Second Spring in a Dual-Support System?
- dance_sg
- · Replies 2 ·
Simple Experimental Error Problem
- Lavace
- · Replies 2 ·
Solve Mass of Fish Problem: Acceleration 2 m/s^2, Line Test 8 lbs
- MorganJ
- · Replies 18 ·
Calculating Reaction Forces and Maximum Bending Stress in Simply Supported Beams
- Emzielou83
- · Replies 20 ·
Solving Spring Constants with 7.50-kg Ball & 2 Springs
- dance_sg
- · Replies 7 ·