Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Speed and G-force for 300 lb drop and rail curve
- jchively
- · Replies 5 ·
Frictional force on a solid sphere rolling without slipping down an incline
- DragonZero
- · Replies 6 ·
Proving Parallel Lines with Matrices: Q3
- BilloRani2012
- · Replies 2 ·
What Is the Reynolds Number for Fluid Flow in a Tube?
- Chiralic
- · Replies 1 ·
Solve Poiseuille's Equation: 10mL of Water in 37.50 cm h, 20.22 cm L
- Chiralic
- · Replies 1 ·
Induced electric field in a solenoid with ferromagnetic core
- bayners123
- · Replies 2 ·
Solving a Diatomic Ideal Gas Problem: Find Temp & Energy Transfer
- burgerkin
- · Replies 8 ·
What Happens to the Fourier Transform When Functions Are Scaled and Shifted?
- gomes.
- · Replies 1 ·
Finding normal force on a skater at the top of a circular path
- tmn50
- · Replies 32 ·
Problem with model answer to exam
- madah12
- · Replies 5 ·
Fourier Transform: Solving 2sinc(w) Part 1
- gomes.
- · Replies 1 ·
Finding the Direction of a Resultant Vector in Rectangular Coordinates
- raiderUM
- · Replies 1 ·
Understanding Vector Components at 120 Degrees
- raiderUM
- · Replies 4 ·
Radio Receiver problem (Path length difference)
- lemonlimesoap
- · Replies 5 ·
Minimum soap bubble thickness for bright coloured reflections
- TomHepp
- · Replies 2 ·
Proving the group velocity equation.
- Lavabug
- · Replies 1 ·
Multiple Plane Mirrors: How Many Images Will Be Formed?
- sachin123
- · Replies 1 ·
Coupled pendulums and wave equation.
- HenryA.
- · Replies 1 ·
Find currents in every loop of the circuit
- builder_user
- · Replies 25 ·
Current in Capacitor Discharge Circuit - 5 μC per s
- sachin123
- · Replies 2 ·
Which bulb will get fused first?
- zorro
- · Replies 1 ·
Net magnetic field due to short barmagnets
- zorro
- · Replies 9 ·
AP Physics Experiment - Tower/Bridge/Boat - 3 in 1
- vom53
- · Replies 6 ·
Plotting (x-xi)/t vs t to find acceleration
- 1barcafan
- · Replies 3 ·
Young double-slit experiment with intensity at 29°
- burgerkin
- · Replies 6 ·
Why do parallel lines S1P and BP intersect at P in Young's experiment?
- aeromat
- · Replies 1 ·
Forces between two hanging parallel wires
- dietcookie
- · Replies 1 ·
Rock dropped from cliff: why is velocity negative after 2s?
- 5minutes
- · Replies 3 ·
What is the maximum generated voltage from the swinging metal piece?
- Unkownentity
- · Replies 9 ·
Rolling Slipping Hoop: Solving for Stopping Time and Direction
- Shuagster
- · Replies 1 ·
Solve Collision Momentum: Find Speed of Pucks A & B
- neoncrazy101
- · Replies 1 ·
How to Calculate Final Uncertainty in Quotient Calculations?
- roam
- · Replies 16 ·
Momentum Eigenstate: Meaning of <psi|p|psi>, etc.
- imagemania
- · Replies 5 ·
Inverting Lorentz transformation from x' to x
- Luckier
- · Replies 3 ·
Kinematics (projectile) - why is my solution wrong?
- Femme_physics
- · Replies 9 ·
Work done by engine on truck decelerating up a slope
- Boogeyman
- · Replies 2 ·
What thermometer to use for an oven, child, cryostat, and sun?
- bon
- · Replies 3 ·
Calculating Projectile Velocity with Spring Compression
- BlueDevil14
- · Replies 7 ·
How Is Equilibrium Distance Calculated Between Charged Spheres?
- 314pi
- · Replies 4 ·
Force pulling vertical arm away from rotating horizontal arm
- Shidoran
- · Replies 7 ·
Solving a Circuit: What Will the Voltmeter Show?
- goneftw
- · Replies 2 ·
Hydraulic lift diameter of larger piston with 500N force on smaller piston
- bcddd214
- · Replies 2 ·
Finding Convex Lens Focal Length
- dh743
- · Replies 3 ·
Faling to loop the loop in a rollercoaster. How does this happen?
- shahir_elmadr
- · Replies 3 ·
Temperature difference conversion between Celsius and Fahrenheit
- BunDa4Th
- · Replies 7 ·
Calculate the fundamental frequency of a steel rod
- timeforplanb
- · Replies 1 ·
Polarized Dielectric and Charge Density.
- supratim1
- · Replies 4 ·
Find Tension in 2 Ropes Supporting 43.0kg Weight
- bcddd214
- · Replies 1 ·
Calculate Torque Vector for Force F at r - Dot Product
- bcddd214
- · Replies 1 ·
Dot product issue. system of equations
- bcddd214
- · Replies 3 ·
Solve Hooke's Law Question: Velocity of Ball After Release
- physicsman23
- · Replies 3 ·
How Can Force and Time Determine Velocity in Physics Problems?
- Ricaoma
- · Replies 7 ·
Is the Joule-Kelvin Expansion Reversible?
- bon
- · Replies 1 ·
Projectile motion - finding initial velocity with no time
- KKuff
- · Replies 3 ·
Constant Temperature Bubble Expansion: Work Calculation for Changing Radius
- Grand
- · Replies 1 ·
Calculating Initial Speed of 2.7g Ball Launched at 45° with 50V Solenoid Input
- Hooke's Law
- · Replies 4 ·
Magnetic flux density in the centre of a current carrying loop
- stobbz
- · Replies 3 ·
More Football Projectile Motion
- coffeeandativ
- · Replies 1 ·
Finding voltages and power in an RLC circuit with 200μF capacitor
- builder_user
- · Replies 36 ·
Can Like Magnetic Poles Theoretically Attract?
- jwxie
- · Replies 1 ·
Period of a physical pendulum with rod and meter stick
- lackos
- · Replies 24 ·
Capacitance and Electromagnetism
- Coldsoul
- · Replies 6 ·
Solving Friction Problem with Masses m and M
- Peter Lauer
- · Replies 2 ·
Projectile Motion: Football Thrown at Moving Receiver
- coffeeandativ
- · Replies 2 ·
Projectile motion with unknown angle and Vo
- Femme_physics
- · Replies 15 ·
As Internal resistance and emf question
- lucky star
- · Replies 1 ·
Why is T=16 not 32 when taking moments at point O?
- quietrain
- · Replies 7 ·
Projectile Motion: Horizontal distance
- coffeeandativ
- · Replies 1 ·
Solving 2y-4x-5=0 and y=3x+1 with matrices gives zero determinant
- BilloRani2012
- · Replies 6 ·
Calculating Peak Velocity of a Magnet Under Continuous Magnetic Force
- Eggers
- · Replies 2 ·
A person uses a re-flecting telescope of dia= 20 cm
- burgerkin
- · Replies 9 ·
Rocket reaches higher after fuel exhaustion in kinematics problem
- Sentience
- · Replies 6 ·
Refractive Index at Critical Angle: Find the Solution
- mogley76
- · Replies 5 ·
How does current change when potential difference increases across a wire?
- Twoacross
- · Replies 1 ·
What happens when a switch is closed in a circuit with two coils?
- mogley76
- · Replies 1 ·
Whats wrong with my derivation?
- caspernorth
- · Replies 3 ·
Projectile Question (Not making any sense)
- kozis
- · Replies 9 ·
Thermal Physics - Gas Problems:
- Peter G.
- · Replies 4 ·
Using the Angular Frequency to Solve a Differential Equation
- imagemania
- · Replies 1 ·
How Accurate Are These Calculations Based on Newton's Second Law?
- salooom599
- · Replies 3 ·
Magnitude of the induced current in the loop
- chinex9a
- · Replies 3 ·
What Is the Rydberg Constant Value for Calculating Hydrogen Atom Transitions?
- craig.16
- · Replies 2 ·
Image distance, height, and magnification for concave mirror with 4.7cm focal length
- thatnewkid
- · Replies 12 ·
Prove that coefficient of friction is independent of mass?
- Rbethell16
- · Replies 1 ·
Power carried by a damped wave pulse on a string
- MissPenguins
- · Replies 6 ·
Factory whistle Doppler effect with moving observer
- thatnewkid
- · Replies 16 ·
What do the symbols in Faraday's law equation mean?
- fran1942
- · Replies 1 ·
Kinetmatics of rectilinear motion
- xzi86
- · Replies 1 ·
Are polarizing filters literally tiny slats or just an analogy?
- QuarkCharmer
- · Replies 1 ·
Laser Interference and Diffraction, single and double slit experiment?
- mattpd1
- · Replies 3 ·
Finding the Rescue Direction for a Plane Emergency Landing
- alexhenderson
- · Replies 17 ·
Torque and angular momentum of a conical pendulum
- joe_coolish
- · Replies 7 ·
When does a charged particle reach x>b in a magnetic field?
- bon
- · Replies 17 ·
Ranking mass loss per nucleon in fusion of different nuclei
- LoveKnowledge
- · Replies 1 ·
Relative Velocity in 2 Dimensions
- Neen87
- · Replies 1 ·
How Much Force Does a Gunshot Exert in Movie Scenes?
- zachwad47
- · Replies 3 ·
Finding the charge on each capacitor
- Femme_physics
- · Replies 3 ·
Spring Mass Damping System Question? Maximum acceleration?
- Someone121
- · Replies 3 ·
What is the Difference Between Escape Velocity and Orbit Velocity?
- Badger01
- · Replies 1 ·