Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
What net external force is requiered?
- metalx1000
- · Replies 2 ·
Why Are Two Masses with Same Weight but Different Brackets Not in Equilibrium?
- pmago
- · Replies 1 ·
How Is Capacitance Calculated in a Charged Parallel-Plate Capacitor?
- crossfacer
- · Replies 2 ·
How Does Tension Affect Work in a Pendulum Swing?
- dnt
- · Replies 6 ·
Calculating Difference in Speed of Light in Glass: Help Needed!
- CathyLou
- · Replies 3 ·
Finding the wave face angle from acceleration down a slope
- gejapathy
- · Replies 2 ·
Banking Angle Calculation for Highway Curve with Given Velocity and Radius
- daniellelok
- · Replies 6 ·
How Much Force to Stop a Car on a Dime?
- robbondo
- · Replies 2 ·
Painting half a house black in Quebec
- WolfishGrin
- · Replies 5 ·
:Determining Flow Rate/Velocity of Fluid in Low Vacuum
- Idea04
- · Replies 2 ·
How Does Current Flow Through a 9V Battery in Different Circuit Configurations?
- deenuh20
- · Replies 4 ·
Derivative of relativistic momentum
- Gyroscope
- · Replies 1 ·
Understanding Copper Density and Volume
- joshv06
- · Replies 4 ·
How can I determine the speed of a bullet using rotation?
- skinnyabbey
- · Replies 8 ·
Calculating Altitude Using Gravimetry
- fsm
- · Replies 32 ·
Finding time given acceleration and velocity
- stacerho
- · Replies 1 ·
Find Coefficient of Friction for Physics Exam Problem
- GuruGhulab
- · Replies 61 ·
Find Current I1 in 7.5 Ω Resistor with Kirchhoff's Rule
- deenuh20
- · Replies 1 ·
Electric potential energy of a pair of point charges
- Xenocite
- · Replies 2 ·
Nanoseconds and Time for Light to Travel
- Dsingh
- · Replies 1 ·
Heat conduction in nuclear reactor (introductory question)
- *Alice*
- · Replies 3 ·
Fixed charge inside a metallic sphere
- student85
- · Replies 3 ·
How Does a Bullet's Mass Change After Penetrating a Wall?
- gabi.petrica
- · Replies 2 ·
How Is the Magnitude of an Electric Field Calculated from Electron Displacement?
- stylez03
- · Replies 9 ·
Advantages and disadvantages of both AC AND AD?
- meg255
- · Replies 11 ·
How Do Series and Parallel Resistor Configurations Affect Current Flow?
- twotaileddemon
- · Replies 2 ·
Electric Fields of straight wire
- stylez03
- · Replies 15 ·
Simple Harmonic Motion (tuning fork)
- bebop721
- · Replies 1 ·
How to seal a fish tank divider for a diffusion experiment
- imrealdumb
- · Replies 4 ·
Can force affect the speed of an arrow leaving a bow?
- bishilany.1
- · Replies 1 ·
Friction Problems Involving Force Vectors.
- AegisFang
- · Replies 1 ·
Finding resultant force from three forces using law of cosines
- aparra2
- · Replies 1 ·
Disk and Electric Field's Direction
- Soaring Crane
- · Replies 1 ·
Distance of closest approach of alpha particle
- Fallen Seraph
- · Replies 5 ·
Understanding Lorentz Transformations: The Role of \bold \tau
- Gyroscope
- · Replies 2 ·
Reflection grating calculation with wavelength 600 nm
- VVill
- · Replies 4 ·
How Many Excess Electrons Cause a 4.57 * 10^-21 N Repulsive Force?
- stylez03
- · Replies 7 ·
Uniform Distributed Electric Charge
- stylez03
- · Replies 11 ·
Finding Max Spring Compression for Firefighter Fall
- Daemonw2ngs
- · Replies 1 ·
What are the tensions in the cables for a 750lb weight at the origin?
- Bradracer18
- · Replies 7 ·
Calculating Height of Lift in Free Fall with Thrown Object
- ritwik06
- · Replies 4 ·
How Can Physics Students Measure a Runner's Acceleration Using Simple Equipment?
- aeroengphys
- · Replies 1 ·
How Often Will Two Children Swinging at Different Rates Sync Up in a Minute?
- aknita
- · Replies 1 ·
How Long Does It Take for a Dropped Packet to Hit the Ground?
- shehri
- · Replies 2 ·
Find distance of image from the mirror
- ritwik06
- · Replies 4 ·
Finding Minimum Mass for Slope Block System
- cclawfjj
- · Replies 3 ·
CIRCUIT ANALYSIS: Use superposition to find the current I
- VinnyCee
- · Replies 1 ·
Find the force of the rope on the block
- ritwik06
- · Replies 1 ·
Angular Momentum: Role of Mass in Rotational Motion
- ritwik06
- · Replies 3 ·
Calculating the Magnitude of Charge Q (in μC) for an Object
- sebmista
- · Replies 4 ·
Average Velocity During a Collision
- cowmoo32
- · Replies 4 ·
Jaguar XK8 cylinder compression stroke temperature
- biggy135
- · Replies 13 ·
Place third charge so that it experiences no force
- bosox3790
- · Replies 1 ·
Is Newton's Law of Universal Gravitation Proven Wrong by a Simple Experiment?
- Jeff Weisberger
- · Replies 26 ·
How does the position of a bucket of sand affect the momentum of a rolling cart?
- ReoFonzo
- · Replies 7 ·
Fluid Mechanics: Point like sink
- kingwinner
- · Replies 3 ·
How far does a bird travel flying between two approaching trains?
- doyle14
- · Replies 3 ·
What Is the Minimum Mass M1 to Prevent Slipping on a 19.1° Slope?
- cclawfjj
- · Replies 6 ·
How Is Work Calculated in a Gas PV Diagram for Path a-d?
- Malicious
- · Replies 3 ·
Temperature and internal energy question
- synx
- · Replies 3 ·
Electric Force Acting on Alpha Particle and Gold Nucleus
- thildebr
- · Replies 2 ·
Two cyclists taking different routes to a campground
- RKNY
- · Replies 4 ·
How Do Spring Constants Affect Oscillation Frequencies and Block Dynamics?
- aeroengphys
- · Replies 3 ·
Astrosat - find maximum delay of light arrival from moon
- ritwik06
- · Replies 3 ·
Weight of air-filled balloon vs empty balloon
- ritwik06
- · Replies 10 ·
Solving a Frictionless Cart Problem with Rain
- Gregie666
- · Replies 1 ·
How Does Friction Affect Energy Conservation in Rolling Motion?
- konichiwa2x
- · Replies 9 ·
Kinematics: Solving Problems in Motion
- tnhoots
- · Replies 4 ·
What is the Tension in a Conducting Wire Connecting Two Charged Spheres?
- feelau
- · Replies 7 ·
Find the velocity of each object after the collision.
- AG1189
- · Replies 12 ·
Solving Gravitational Forces on a Circular Disk with String Attached
- P3X-018
- · Replies 2 ·
Meeting Time and Distance between Two Towns
- physnotmything
- · Replies 2 ·
How Far Does a Ball Travel When Kicked Off a Slope?
- sroy2
- · Replies 7 ·
Two blocks on a pulley with friction and a 30-degree ramp
- Larz31
- · Replies 7 ·
Electric Field Question (Very Difficult)
- cheechnchong
- · Replies 3 ·
How Do You Calculate Rocket Acceleration and Speed in Kinematics?
- dopey
- · Replies 6 ·
When does a particle reach its maximum x coordinate with given acceleration?
- lkg5
- · Replies 4 ·
Ice at 0°C mixed with water at 75°C to reach 20°C
- toddler
- · Replies 6 ·
Solving for Original Speed in a Changing Velocity Problem
- xsc614
- · Replies 4 ·
Find the difference in mass between the charged objects.
- WhoElseoftheBDC
- · Replies 6 ·
Calculating Speed with Kinematics
- darkmagicianoc
- · Replies 2 ·
Time elapsed between seeing a crash and hearing the crash
- danshodan
- · Replies 1 ·
Calculating Muzzle Velocity of a Tank's Gun for a Uranium Projectile
- SamTsui86
- · Replies 1 ·
What's the Speed of the Bird Flying at a 60-Degree Angle?
- shehri
- · Replies 2 ·
Energy pretty simple but I think I'm missing something
- IamAXC
- · Replies 1 ·
What Speed Must an Electron Achieve to Orbit a Charged Sphere?
- dtesselstrom
- · Replies 1 ·
Pendulum acceleration and work done with 1m length and 12.7° angle
- ataglance05
- · Replies 1 ·
Two Velocities in a Traveling Wave
- Solis
- · Replies 1 ·
Air Hockey Table Inclination Calculation
- nateshoe
- · Replies 3 ·
Maximum frequency of X-ray photon from 70 kV electron
- xieon
- · Replies 1 ·
Coulomb's Law (Electricity and Magnetism) Question
- thepassenger48
- · Replies 1 ·
Calculating the Change in Electric Potential Energy
- xxkbxx
- · Replies 9 ·
How Long Does It Take for a Recoiling Gun to Stop?
- moondust0109
- · Replies 7 ·
Calculating Final Temperature of Phase Change Using Heat Absorption
- gamesandmore
- · Replies 6 ·
Where to find Physics B quizzes with solutions
- AznBoi
- · Replies 1 ·
Tension in chandelier cables with different attachment points
- nateshoe
- · Replies 2 ·
Finding velocity along a vector, given velocity in xyz
- Bucky
- · Replies 1 ·
Basic Electricity Question. Needs Checking ?
- cheechnchong
- · Replies 2 ·
Electric Field on a Water Molecule
- teleport
- · Replies 13 ·
Bungee Jumping and Hooke's law. Is something missing?
- Laties
- · Replies 11 ·