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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How do I find Q without having a distance r?
- BuBbLeS01
- · Replies 14 ·
I can't figure out what I am doing for nothing Max Torque
- BuBbLeS01
- · Replies 15 ·
Self inductance of a solonoidal coil
- samblue
- · Replies 1 ·
How Does Decreasing Magnetic Field Affect Ammeter Reading in a Circuit?
- kalo
- · Replies 7 ·
Charge on a parallel-plate capacitor with 2.32 cm electrodes
- BuBbLeS01
- · Replies 6 ·
Solving for Electron Transfer Between Charged Spheres
- Goldenwind
- · Replies 5 ·
How Does Current and Magnetic Field Affect the Force on a Power Line?
- samblue
- · Replies 1 ·
How Do You Calculate the Total Distance Traveled by a Car with Variable Speeds?
- Hoejer
- · Replies 2 ·
Where Will a Proton Move When Facing an Electric Field?
- samblue
- · Replies 6 ·
Calculating Acceleration and Forces in Rotating Rod with Fixed Hinge
- yoran
- · Replies 6 ·
Finding charge on two repelling balls hung from threads
- vaazu
- · Replies 2 ·
What Color Appears When White Light Hits a Thin Oil Film on Water?
- mrx35g
- · Replies 1 ·
How Fast Will Zeke Slide Down the Hill?
- batman617
- · Replies 1 ·
How Do You Calculate the Flight Radius of a Plane Tilting at 40 Degrees?
- Oerg
- · Replies 8 ·
Friction proportional to speed on a 5° hill
- MellowOne
- · Replies 4 ·
Electric Field Strength: Calculating for 0.75 g Plastic Bead
- BuBbLeS01
- · Replies 4 ·
Electric force between two charged spheres 3.06 cm apart
- BuBbLeS01
- · Replies 3 ·
How Do You Convert Daily Caloric Intake to Watts?
- Simrin530
- · Replies 1 ·
What is the strength of the electric field
- BuBbLeS01
- · Replies 7 ·
How Long Does It Take a Skier to Descend a 22° Incline?
- dougr81
- · Replies 1 ·
Why Does Adding 2π to the Phase Angle Yield Equivalent Solutions in SHM?
- salman213
- · Replies 3 ·
Particle Position from a V(m/s) vs T(s) Graph
- ae4jm
- · Replies 10 ·
How to Calculate Net Electric Force Correctly?
- BuBbLeS01
- · Replies 10 ·
Solve for the Intersection Point of Two Projectiles with Given Initial Velocity
- jen333
- · Replies 9 ·
Determine magnitude of the components of these forces
- pka
- · Replies 3 ·
What magnitude charge creates a 4.17 N/C electric field at 9.78 m?
- BuBbLeS01
- · Replies 7 ·
Finding q1 when q2 experiences no net electric force
- BuBbLeS01
- · Replies 1 ·
Calculating Mass and Normal Force of the Most Massive Car Ever Built
- Twilit_Truth
- · Replies 3 ·
Power generated by water falling 50 m at Niagara Falls
- anonymous820
- · Replies 2 ·
What is the Young Modulus of Nylon Rope?
- silverfox2007
- · Replies 4 ·
What is the centripetal force exerted on a giant amoeba in a centrifuge?
- Bensky
- · Replies 5 ·
How Do You Calculate the Amplitude for a Mass to Fall Off in SHM?
- salman213
- · Replies 17 ·
Point charges and static equilibrium
- elecstorm
- · Replies 4 ·
Calculating Air Drag for Projectiles Lab
- bwong
- · Replies 1 ·
Finding normal force on a pulled box with friction
- leenix
- · Replies 2 ·
Finding the charge of object A from electric field magnitude and direction
- cse63146
- · Replies 11 ·
Calculating Momentum and Collisions in Repetitive Collision Problems
- Zarbon
- · Replies 4 ·
Solving Gauss's Law Problem: Determine Electric Field on/in Sphere
- samblue
- · Replies 4 ·
Refractive Index Calculation for Light Passing from Substance X to Substance Y
- disfused_3289
- · Replies 4 ·
Initial velocity for stopping rotating cylinder
- yoran
- · Replies 4 ·
Collision between objects with momentum conservation
- hasnain721
- · Replies 4 ·
Energy transformation equations
- mike_302
- · Replies 1 ·
How Much Work Does a Woman Do to Start a Turntable in Motion?
- stoopid
- · Replies 1 ·
Finding the Position and Charge for a Zero Resultant Force in Coulomb's Law
- EvanQ
- · Replies 4 ·
Calculate the torque exerted by the car around the back wheels
- stoopid
- · Replies 2 ·
Understanding Torque Direction: A Practical Approach
- Gyroscope
- · Replies 4 ·
Solve Vectors Question: Catch Friend in 5 Min on Interstate 83
- aquamarine08
- · Replies 4 ·
Deriving Shear Stress on a Conical Bore Fluid Element
- makethings
- · Replies 1 ·
Rotational inertia of nonuniform cylinder
- physicsklutz
- · Replies 2 ·
Why Do B_x and C_x Have Different Signs in a Truss Analysis?
- Saladsamurai
- · Replies 2 ·
Calculating Friction Force, Mass and Gauge Pressure in an Emergency Tank
- jenha14
- · Replies 1 ·
TORQUE A cylindrical fishing reel has a mass of 0.65 kg and a radius of 4.3 cm .
- lettertwelve
- · Replies 12 ·
Finding Minimum Magnitude of Force Fr
- skateza
- · Replies 2 ·
Block pushed up frictionless incline
- mooneh
- · Replies 2 ·
Finding the unknown force in a moments problem with a retort stand
- hasnain721
- · Replies 25 ·
Definite integral of (1 + 3x) from -1 to 5
- keltix
- · Replies 4 ·
Max Theta for Block and Rod System
- chickendude
- · Replies 4 ·
Problems with velocity-time graphs
- DoctorJesus
- · Replies 2 ·
Calculating Force Needed to Move 4.8 kg Block Against Wall
- mooneh
- · Replies 16 ·
Pos. et neg. particle in circ. motion
- henxan
- · Replies 6 ·
Magnification of an image - How does the image look like?
- rhxoehwhfh
- · Replies 2 ·
Finding oxygen mass from PV=nRT in a compressed cylinder
- physics4u
- · Replies 1 ·
Focal Lengths of Two Lenses of a Microscope
- rhxoehwhfh
- · Replies 1 ·
Work done in Compressing a fluid in a piston (Bulk Modulus)
- shivkumarsing
- · Replies 7 ·
Comparing intensity and distance for identical vs similar light sources
- dranseth
- · Replies 2 ·
Calculating Bathysphere Mass for Constant Descent at 1.10 m/s
- jenha14
- · Replies 1 ·
Refraction Problem- very easy but
- physicsbhelp
- · Replies 11 ·
How Does Charge Increase Affect Capacitor Energy and Potential Difference?
- v_pino
- · Replies 6 ·
Is it easier to hold a swinging partner than a stationary one?
- petwoip
- · Replies 1 ·
Is the Second Hint for Newton's Law of Restitution Correct?
- Harmony
- · Replies 3 ·
Finding force to accelerate electron using work-kinetic energy theorem
- physicsmarkb
- · Replies 5 ·
US electrical energy consumption and work with luggage on stairs
- Obsessive123
- · Replies 1 ·
What Is the Index of Refraction of the Liquid in the Tank?
- physicsbhelp
- · Replies 16 ·
What is the relationship between the angle theta and the charge q?
- prncess23
- · Replies 3 ·
Light reflecting from two perpendicular surfaces
- physicsbhelp
- · Replies 9 ·
Drawing reflected wavefronts and angles of incidence and reflection
- Aamun
- · Replies 2 ·
How Does Immersion Affect Spring Scale Readings?
- jenha14
- · Replies 1 ·
How Long Does It Take for a Space Station to Rotate Once?
- physicsma1391
- · Replies 16 ·
What is the correct method for solving this Newton's Third Law problem?
- Precursor
- · Replies 10 ·
How to Solve Work and Energy Problems in Physics
- petern
- · Replies 12 ·
Torque needed to overcome air resistance in rotating ball
- Omlette
- · Replies 1 ·
Rotating objects in non-inertial frames
- frenchyc
- · Replies 1 ·
Centripetal Force Lab: Converting Linear Speed to Radians/sec
- physks4dumies
- · Replies 1 ·
Banking Angle, Normal/Centripetal Force?
- physicsma1391
- · Replies 3 ·
Mechanical Waves Homework Answers: Niles
- Niles
- · Replies 11 ·
Perpendicular forces, centripetal acceleration, and work in circular motion
- mike115
- · Replies 10 ·
How Is Force Calculated for an Object Falling Under Gravity?
- bl00d
- · Replies 15 ·
Tangential acceleration problem
- kagekiri
- · Replies 3 ·
Understanding Energy Changes in Motion
- Amy T
- · Replies 9 ·
How Does Gravitational Acceleration Affect a Helicopter's Upward Motion?
- tomcenjerrym
- · Replies 3 ·
Finding filament temperature when resistance is temperature-dependent
- samblue
- · Replies 5 ·
Equilibrium problem involving wierd static friction
- brendan3eb
- · Replies 2 ·
How Does Coulomb's Law Apply to Electric Fields at Points A and B?
- Shakas
- · Replies 1 ·
Wave frequency from wavelength and speed
- physicsbhelp
- · Replies 12 ·
How Does Reducing Distance Affect Force Between Charges?
- rcmango
- · Replies 3 ·
Solving for q2: Find Charge of Particle 2
- rcmango
- · Replies 5 ·
How Do You Calculate Gravitational Force Between Earth and an Asteroid?
- lusterjester
- · Replies 1 ·
Find the angles of refraction for these two colors.
- Aamun
- · Replies 5 ·