Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.
Threads
Mailbag dropped from a helicopter at 20.8 m with initial velocity 31.2 m/s
- grewas8
- · Replies 2 ·
Free falling object and Newtons law
- Oblio
- · Replies 3 ·
Closed Circuit without components
- exec
- · Replies 1 ·
How can angular distance be used to measure the wobble of a star-planet system?
- eraemia
- · Replies 3 ·
How Much Force Stopped the Diver Underwater?
- plqaokws
- · Replies 1 ·
Finding angle between normal vector and z-axis on a hill
- ChronicQuantumAddict
- · Replies 4 ·
Understanding Photon Emission from Atoms
- danago
- · Replies 2 ·
Torque balance on truck disc brake with 6000 lbs force
- WhiteHawk
- · Replies 2 ·
Baseball Physics: Solving Velocity and Net Force with Drag Coefficient
- Niles
- · Replies 4 ·
How Do You Calculate the Electric Field Inside a Bored Insulating Cylinder?
- Jordanosaur
- · Replies 5 ·
Finding ramp angle and distance for projectile motion with given landing position
- dukiex3
- · Replies 7 ·
Finding initial velocity for a baseball hitting a wall above launch height
- Remulak
- · Replies 8 ·
Yr 11 Trebuchet Project Calculations
- darkblade4
- · Replies 4 ·
Box hung over pulley at an angle?
- BlueSkyy
- · Replies 4 ·
Electric Field Strength Calculation for a Point 0.01m to the Left of a Charge
- WardenOfTheMint
- · Replies 12 ·
Finding launch angles for a field goal kick at 42.2 m and 3.75 m height
- chaotixmonjuish
- · Replies 3 ·
What is the magnitude of the position vector at time t = 7.5 s?
- chaotixmonjuish
- · Replies 5 ·
Can You Avoid a Speeding Ticket with a GPS Tracker?
- mpgriffis
- · Replies 4 ·
Converting Between Units of Measurement
- Larrytsai
- · Replies 2 ·
Calculate the ratio of the time the jumper is above ymax/2
- killerinstinct
- · Replies 14 ·
Finite Sheets of Charge Compared to Infinite Sheets of Charge
- Gaupp
- · Replies 3 ·
Calculating Angle of Refraction for Light Passing Through Water and Glass
- aliaze1
- · Replies 6 ·
Vector diagram for plane velocity with southeast wind
- agentnan
- · Replies 4 ·
Phase Difference of Transfer Function H(jw)
- nicktacik
- · Replies 3 ·
How Do You Prove \sum_{j,k} \epsilon_{ijk} \epsilon_{ljk} = 2\delta_{il}?
- cashmerelc
- · Replies 5 ·
How to Determine Average Acceleration During Contact with the Floor?
- jperk980
- · Replies 4 ·
Jet airliner velocity with wind at 30° north of east
- sanghoon
- · Replies 4 ·
What is the height of a 91 lbs. gold cube?
- chrisjj
- · Replies 3 ·
Vector A+B and A-B: Graphical Method
- Propagandhi
- · Replies 5 ·
How to prove the triangle area between vectors a and b is 1/2|a × b|
- jbp890
- · Replies 1 ·
How High Does a Two-Stage Rocket Reach?
- eeriana
- · Replies 1 ·
Find the magnitude and angle of vector B
- nneilson1
- · Replies 2 ·
What is the relative velocity of two cars traveling in the same direction?
- mslena79
- · Replies 7 ·
How Do You Derive the Kinematic Equation \(v_f^2 = v_i^2 + 2ad\)?
- Lego
- · Replies 5 ·
Calculating Micrometer Reading Change for 50 Fringes at λ = 550 nm
- Benzoate
- · Replies 1 ·
Calculate Smallest Distance Between Baby Parts with Ultrasound Pulses
- Trail_Builder
- · Replies 5 ·
Finding rifle angles to hit a 91.4m target at 427 m/s
- mslena79
- · Replies 14 ·
What surface does r·a = constant represent?
- cashmerelc
- · Replies 18 ·
Elastic potential energy of spring
- psycovic23
- · Replies 2 ·
Projectile motion rocket problem
- mslena79
- · Replies 2 ·
How many photons per second does a 1-kW transmitter emit at 880 kHz?
- GravityGirl
- · Replies 3 ·
Lead ball sinking in lake and object falling from height
- jperk980
- · Replies 8 ·
How Many Photons Does a 1-kW Radio Transmitter Emit at 880 kHz?
- GravityGirl
- · Replies 1 ·
Can Conservation of Momentum Be Applied to Magnetic Hockey Pucks on Ice?
- eraemia
- · Replies 3 ·
What is the acceleration and tension in a pulley system?
- megaforcetkd
- · Replies 3 ·
Trajectory, where it will land.
- fender24
- · Replies 1 ·
How Do You Calculate the Muzzle Velocity of a Spring-Loaded Toy Gun?
- EvanQ
- · Replies 9 ·
How Does Coil Dimension Affect Magnetic Field Strength?
- gamesandmore
- · Replies 3 ·
What Was the Initial Speed of a 81kg Projectile Fired Straight Up to 175km?
- habs.fan
- · Replies 11 ·
How Does Projectile Height Affect Time of Flight?
- janome
- · Replies 1 ·
Gravitational Force on 10.0kg Mass at Earth Locations
- azila
- · Replies 15 ·
Calculating Acceleration of a Toy Train with a Sticking Wheel
- Steve Halt
- · Replies 3 ·
How Do You Solve for Acceleration and Velocity in Basic Physics Equations?
- mrthomas
- · Replies 2 ·
How Do You Calculate the Force Exerted by Water in a Tank?
- lostinphysics44
- · Replies 1 ·
Can falling from a building be deadly?
- RilesKR
- · Replies 2 ·
What is the average speed of a gerbil running in a clear plastic tube?
- lostfan176
- · Replies 6 ·
How Do You Prove Trigonometric Identities for Vector Angles?
- Oblio
- · Replies 20 ·
Finding Components of Perpendicular Vectors in a Cartesian System
- Johnny Blade
- · Replies 8 ·
How Much Charge Would the Moon and Earth Need to Replace Gravity?
- itzxmikee
- · Replies 2 ·
Calculating time of falling object
- anglum
- · Replies 28 ·
What is the Final Temperature of the White Coffee?
- bidhati
- · Replies 2 ·
What is the acceleration due to gravity on this asteroid?
- azila
- · Replies 3 ·
What Defines a System in Different Academic Fields?
- eraemia
- · Replies 3 ·
How Do You Calculate the Coefficient of Kinetic Friction in a Skiing Problem?
- eku_girl83
- · Replies 2 ·
Discussions on answer of a problem
- neelakash
- · Replies 6 ·
Doing something wrong Newtons law proof
- Oblio
- · Replies 16 ·
Converting 1.01 × 10^5 Pa to N/cm² and psi
- Cugglebear
- · Replies 1 ·
Tension in a cord supporting a 1.2 kg and 3.2 kg mass over a pulley
- iheartpink
- · Replies 9 ·
Calculate the instantaneous acceleration
- Heat
- · Replies 21 ·
Relation between Angular speeds/accelerations
- mircobot
- · Replies 4 ·
Earthquake analysis (motion along a straight line)
- physstudent1
- · Replies 1 ·
Does the Mass of an Object Fluctuate?
- jumbogala
- · Replies 8 ·
Ring on rod with string and hanging mass constraint
- neelakash
- · Replies 2 ·
Acceleration/distance/time problem
- Rylynn97
- · Replies 3 ·
Calculating Distance Traveled by a Dog Between Two Walking Owners
- josephpatricks
- · Replies 2 ·
Force on table when 1 kg mass is dropped from height L
- mreznicek
- · Replies 12 ·
Component Vectors: Find the Angle with a Magnitude of 25 & X Component of 12
- josh84
- · Replies 5 ·
What do we mean by charge density and its relationship to charge and mass?
- hamza
- · Replies 4 ·
Atwood machine pully problem with a twist
- DukeJP2010
- · Replies 9 ·
Lorentz transforms for rocket length contraction events
- strangequark
- · Replies 7 ·
Finding a1 and a2 given their sum, difference, and a3
- saber1357
- · Replies 2 ·
Unit Vector Notation: Solve a1, a2 for Vector Equation
- saber1357
- · Replies 1 ·
How Do You Calculate Vector Differences and Resultant Forces?
- Vaalron
- · Replies 17 ·
Figuring Displacement from acceleration
- deenuh20
- · Replies 12 ·
Why Does the Tension in the Cable Change Above and Below the Worker?
- thatgirlyouknow
- · Replies 15 ·
How far does a shopping cart roll before Jill catches it on a 3° slope?
- dude24
- · Replies 6 ·
Find the Component of Two Vectors
- josh84
- · Replies 3 ·
Does the balloon's upward velocity affect the package's fall time?
- chemguy990
- · Replies 2 ·
Finding Initial Velocity of a Projectile Using Position and Angle
- JoeTrumpet
- · Replies 7 ·
Calculating New Vector Components
- josh84
- · Replies 1 ·
Kinematics in 2d of eagle flying
- Inonin
- · Replies 3 ·
Direction and magnitude question again
- excelsion
- · Replies 6 ·
Find Force From A Graph Of Potential
- Winzer
- · Replies 17 ·
What is the initial velocity of a ball thrown straight up?
- chemguy990
- · Replies 3 ·
Position of Electron Moving Along x-Axis at Momentary Stop
- jjc39
- · Replies 1 ·
Ball thrown straight up reaches 80.6m in 5.1s, find initial speed
- anglum
- · Replies 23 ·
Surface area of N spherical droplets?
- saber1357
- · Replies 6 ·
Briefcase dropped from 130m helicopter
- deenuh20
- · Replies 4 ·
Equilibrium of Hanging Bag of Cement: Tension Forces Question Solution
- myelevatorbeat
- · Replies 9 ·
Incline Plane with Friction with one object hanging?
- myelevatorbeat
- · Replies 2 ·