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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Where Will the Ball Hit the Floor of the Railcart?
- supercali
- · Replies 6 ·
How Is a Child's Swing Speed Calculated Using Energy Conservation?
- bphysics
- · Replies 3 ·
Position vector relation between comet and earth
- karnten07
- · Replies 14 ·
Tension in Cable: Solving Using Trig
- ChaosCon343
- · Replies 1 ·
Modify Radius of Iron for Density Accuracy
- Ryo124
- · Replies 3 ·
Max Electric Field on 4.3mC Ring of Charge: Radius 4cm
- chopticks
- · Replies 4 ·
Overcoming friction and then some.
- anyone1979
- · Replies 6 ·
Finding kinetic energy when a spring is stretched halfway
- anyone1979
- · Replies 6 ·
Deriving the Focal Length of a Concave Mirror
- wiz0r
- · Replies 4 ·
How does a jumping bug affect the rotational dynamics of a uniform bar?
- eeriana
- · Replies 9 ·
Using a Stroboscope to Make a Propeller Appear Stationary
- rcmango
- · Replies 1 ·
Use Newtonian dynamics to find the speed at this position
- Jessikalinphy
- · Replies 2 ·
What is the angular acceleration of each wheel?
- rcmango
- · Replies 6 ·
Angular Variables and Tangential Variables
- needhelp2008
- · Replies 1 ·
The space shuttle is in a 300 km-high circular orbit
- mookie84
- · Replies 7 ·
How Do You Calculate the Angular Speed of a Fishing Reel?
- rcmango
- · Replies 6 ·
What is the kinetic energy of the block?
- anyone1979
- · Replies 6 ·
How much work was done by a force to accelerate a block
- anyone1979
- · Replies 2 ·
Calculating Sled Speed on a Frictionless Hill: Equations for Theta and Radius
- mookie84
- · Replies 1 ·
How to find the tension using the F=ma formula
- blue__boy
- · Replies 2 ·
How Much Work Is Done Stretching a Spring?
- anyone1979
- · Replies 2 ·
Calculating Force of Stifled Sneezes
- donkey11
- · Replies 6 ·
Work dragging 50 kg mass up a 25° ramp with friction
- anyone1979
- · Replies 8 ·
Multimeter measuring full-wave rectified DC current?
- 314159271828
- · Replies 7 ·
What is the moment of inertia and bearing friction of a rotating turbine?
- confused2006
- · Replies 6 ·
Satellite period, which equation?
- izforgoat
- · Replies 9 ·
How to calculate theta from tantheta
- chemboy
- · Replies 5 ·
How to weigh an object that's heavier than the max. weight of the spring scale
- krosenberg
- · Replies 1 ·
Bear on beam: tension and support forces at x = 1.10 m
- snipaj9696
- · Replies 2 ·
Finding Deceleration to Avoid Collision
- smthbrothrJ
- · Replies 2 ·
How Far Does the Person Move on the Ice?
- Werg22
- · Replies 5 ·
Coefficient of kinetic friction from shuffleboard puck deceleration
- aquamarine08
- · Replies 5 ·
Find Mass of Iron (Atomic Mass 56 g/mol)
- Ryo124
- · Replies 1 ·
How Do You Calculate Acceleration and Retardation for a Train's Movement?
- scotthands
- · Replies 1 ·
Capacitors in parallel and in series
- chopticks
- · Replies 1 ·
How Long and Fast Does a Diesel Train Accelerate to Cover 6km?
- scotthands
- · Replies 5 ·
How Does Friction Impact Swimmers and Drivers in Different Environments?
- LegendFury
- · Replies 2 ·
Wave from stone in lake: 40 waves in 4 seconds, radius 1.6 m
- Turbo Math
- · Replies 6 ·
How many trips will the box make before coming to rest?
- octahedron
- · Replies 5 ·
Working of the Eye: See Virtual Images
- Nikhil_kumar
- · Replies 2 ·
Chain on table - calculate work
- Destrio
- · Replies 4 ·
Practical applications of eigenvectors
- Martin III
- · Replies 1 ·
Current and voltage in parallel circuit with 12V source
- IDreadPhysics
- · Replies 2 ·
How Much Work Is Required to Push a 10 kg Steel Block Across a Table?
- kraaaaamos
- · Replies 1 ·
Why does my calculator error when finding the refraction angle exiting the glass?
- HelloMotto
- · Replies 3 ·
Conservation of Energy and Gravitation
- Destrio
- · Replies 3 ·
Does the Triple Integral Formula Apply to a Point-Mass Inside a Spherical Shell?
- cscott
- · Replies 1 ·
Projectile:Launching and landing at different heights
- uaeXuae
- · Replies 13 ·
Drag Force and Power on an inclined plane
- kraaaaamos
- · Replies 3 ·
Athlete jumping 2 feet high at 20 degrees: velocity components at takeoff and landing
- uaeXuae
- · Replies 8 ·
Power needed to keep car moving
- VanKwisH
- · Replies 4 ·
How Does an Elevator's Acceleration Change Over Time?
- Prathep
- · Replies 6 ·
Calculating Centre of Mass on a Board on Ice
- Omnie
- · Replies 3 ·
Cart on a 27° ramp and coin friction on an opening book
- staz13
- · Replies 3 ·
Hard Wave Question (Really )
- polymerase
- · Replies 3 ·
How Many Oscillations Occur Before Amplitude Decays to e^-1?
- mihir871
- · Replies 14 ·
What are the unknowns in a simple pendulum problem and how can they be solved?
- SciencePF
- · Replies 5 ·
Max angle for total reflection in a corner reflector with n = 1.86
- jiten827
- · Replies 3 ·
Buoyant forces with 2 liquids question
- crispy_nine
- · Replies 2 ·
A Metal Block submereged in water from a spring scale
- Fittleroni
- · Replies 28 ·
Rotating space station wheel: acceleration at rim when crew moves to center
- GreenLantern674
- · Replies 4 ·
Spring constant and Hooke's law
- ~christina~
- · Replies 11 ·
Finding student mass from bungee cord stretch and spring constant
- cse63146
- · Replies 8 ·
Max Height and Angle of Cannon in 12 m/s Ball Shot with 24J Kinetic Energy
- NewJersey
- · Replies 5 ·
Images from Two Parallel Mirrors
- jiten827
- · Replies 1 ·
Flute beats and tuning joint extension with changing speed of sound
- sam.
- · Replies 1 ·
Why divide momentum equations to eliminate final velocity
- Hurricane3
- · Replies 3 ·
What is the relationship between period and mass in a simple pendulum?
- Skeptik101
- · Replies 5 ·
How Many Turns Will a Spinning Cylinder Make Before Stopping Due to Friction?
- phy_irodov
- · Replies 1 ·
How Does Archimedes' Principle Determine the Payload of a Hot Air Balloon?
- barry3rd
- · Replies 1 ·
Finding tension and horizontal force for a tilted picture frame
- poloboy
- · Replies 1 ·
Finding harmonic number, frequency, and wave speed for a 7 m vibrating string
- Fusilli_Jerry89
- · Replies 1 ·
Thermodynamics energy efficiency
- donkey11
- · Replies 1 ·
Electric field, potential and capacitance of a conducting sphere
- magicuniverse
- · Replies 1 ·
Images from Two Parallel Mirrors problem
- jiten827
- · Replies 1 ·
How Does the Position of G Change in Different Types of Pendulum Bobs?
- rem
- · Replies 2 ·
Calculating Tune Adjustment for Flutist's Note A: Aa Flutist in 342 m/s Room
- sam.
- · Replies 1 ·
Kinematics[polar coordinate] concept problem
- sunumen
- · Replies 5 ·
What is the source of the magnetic field inside the box?
- yeo
- · Replies 2 ·
Need Check on Collision Question
- tachu101
- · Replies 2 ·
Calculating Electron Count and Mass in a Charged System
- trustabdy
- · Replies 6 ·
Moment of Inertia of Disc Problem
- rwx1606
- · Replies 3 ·
What are the velocities of the particles after a perfectly inelastic collision?
- cse63146
- · Replies 2 ·
Angular momentum of two particles and a rod system
- pakmingki2
- · Replies 3 ·
How Do Waves Affect a Fisherman's Boat?
- Heat
- · Replies 3 ·
Finding period and tension for a conical pendulum with m=4.35 kg, s=5.50 m, θ=64°
- tachu101
- · Replies 8 ·
Pulley with Kinematics in One Dimension Question
- jakecar
- · Replies 5 ·
Calculate Max Kinetic Energy of Neutron in MeV, Physics Book Error?
- Ry122
- · Replies 1 ·
Archimedes Crown Density Calculation
- DizzyDoo
- · Replies 2 ·
How Do You Convert \( e^{1+j2} \) to Cartesian Form?
- Silmax
- · Replies 2 ·
Slingshot Physics: Calculating Projectile Speed from a Building's Height
- Mctwist
- · Replies 3 ·
Calculating Horizontal Force for Displaced Chandelier
- jakecar
- · Replies 6 ·
Physics Problem: Magnitudes and Components
- murfzee0224
- · Replies 4 ·
Calculate Components of Hammer's Velocity at Edge of Roof
- murfzee0224
- · Replies 2 ·
Can Linear Expansion Formula Be Used for a Heated Brass Spring?
- rsyodoom2005
- · Replies 1 ·
Magnetism Question - Compare Radii of Circular Paths
- cmantzioros
- · Replies 1 ·
Calculating Speed from a Falling Ball's Gravitational Energy
- Senjai
- · Replies 9 ·
Are the translational and angular forms of Newton's laws equivalent?
- Lil Frank
- · Replies 2 ·
Kinetic energy around an axis - two methods?
- Niles
- · Replies 7 ·
Roulette wheel and ball passing positions with angular deceleration
- wowolala
- · Replies 4 ·