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 can this be wrong? (Simple circular motion)
- lando45
- · Replies 3 ·
Pendulum String Breaking Point Problem
- aboothby
- · Replies 1 ·
Physics Tension/Equilibrium Problem
- Destrio
- · Replies 1 ·
Calculating tension in an elevator
- sweetdaisy186
- · Replies 7 ·
Solve Optics Problem with Lensmaker's Equation
- dzza
- · Replies 1 ·
Calculating Magnitude of Force Exerted by Shopper
- blrdey
- · Replies 6 ·
How does the expression 2I_x I_2 = 16W relate to power in a circuit?
- Mesmer
- · Replies 8 ·
Finding the resultant of two forces from a diagram
- wtf_albino
- · Replies 3 ·
Finding Thevenin voltage and internal resistance in two circuits
- Odyssey
- · Replies 1 ·
Why is static friction greater than kinetic friction on an inclined surface?
- humaders99
- · Replies 2 ·
Centripetal acceleration of Neutron stars
- vu10758
- · Replies 1 ·
Calculating Mass of Steel Ball for Ultimate Strength
- aquabug918
- · Replies 1 ·
Finding force with trig functions
- Pencil
- · Replies 1 ·
What Initial Speed Does the Second Kingfisher Need to Catch the Dropped Fish?
- LastBloomingFlower
- · Replies 2 ·
Finding minimum force for window washer on multiple pulley system
- ziptrickhead
- · Replies 9 ·
How High Will Water Reach When Fired at an Angle?
- studentmom
- · Replies 2 ·
Relation of Pressure and Weight of Air.
- las2vc
- · Replies 1 ·
Solve IB Exam Practice Problem: Block on Inclined Plane
- problem
- · Replies 1 ·
Does an apple move up if pushed in a falling lift?
- semc
- · Replies 7 ·
Newton's 3rd Law is difficult to understand.
- ysk1
- · Replies 17 ·
Is there a simpler way to solve for time in this algebraic equation?
- jKotha
- · Replies 3 ·
Isolating d_truck in an equation with two speeds
- jKotha
- · Replies 6 ·
Finding rocket final velocity with variable mass ejection
- MTitus
- · Replies 1 ·
Finding the Set of Permutable Matrices with Algebra
- esmeco
- · Replies 2 ·
Free-body diagram for two boxes connected on a pulley.
- ysk1
- · Replies 5 ·
Sum of x-component forces on block 2 on an incline
- kenau_reveas
- · Replies 7 ·
Compute the torque developed by an airplane engine
- John O' Meara
- · Replies 1 ·
Which force combinations allow constant velocity motion?
- kenau_reveas
- · Replies 5 ·
Conservation of Linear Momentum of spaceship
- User Name
- · Replies 3 ·
Determining Acceleration for Block A to Avoid Falling from Cart
- Mehta29
- · Replies 4 ·
Calculating effective resistance in complex resistor networks
- junior_J
- · Replies 7 ·
How to find capacitance for parallel plates with a dielectric
- Tom McCurdy
- · Replies 1 ·
Calculating Tension in a Vertical Acceleration Problem
- roxysoxy14
- · Replies 3 ·
Maximum load a helium balloon can lift
- kindaichi
- · Replies 7 ·
When does a falling ball have one-third kinetic energy?
- rkslperez04
- · Replies 4 ·
Why does phase difference decrease when resistance increases in RC and RL circuits?
- chris_yau
- · Replies 2 ·
How do I set up integrals for differentials?
- mewmew
- · Replies 1 ·
What is the inital speed of the ball?
- yankee
- · Replies 1 ·
Object dropped from plane velocity problem
- yankee
- · Replies 2 ·
Calculating Drag Coefficient for Parachute A-Level A2 Coursework
- smileandbehappy
- · Replies 2 ·
Conservation of energy stone problem
- colsandurz45
- · Replies 1 ·
Writing Question (Position-Time Graph)
- ihatephysics
- · Replies 2 ·
Sound level at 4 km from firework explosion with air absorption
- kreil
- · Replies 3 ·
Thermodynamics/Cooling Problem ^_^
- paque
- · Replies 2 ·
How Fast Was the Baseball Rolling Before It Fell?
- yankee
- · Replies 1 ·
Calculating Speed and Rotation for Training Devices
- needhelp83
- · Replies 5 ·
What is the definition and calculation for change in kinetic energy?
- bearhug
- · Replies 1 ·
Projectile launched at 10.1 km/s from Earth's surface
- bearhug
- · Replies 8 ·
How to Calculate Work Done on a Spring?
- bearhug
- · Replies 3 ·
Velocity-time graph for car and rolling ball
- Malicious
- · Replies 2 ·
Relative velocity question - plane and wind
- maskd
- · Replies 1 ·
Resistance Propagation of Error
- mb85
- · Replies 2 ·
Calculus-based physics book for mechanics topics
- Llama77
- · Replies 1 ·
How Do You Calculate the Minimum Stopping Distance for a Car?
- the_quack
- · Replies 4 ·
Finding acceleration and tension for connected crates on an incline
- BunDa4Th
- · Replies 4 ·
Are resistors in series if there is a current source between them?
- pfk_12
- · Replies 1 ·
Trouble with mirror equations, .
- x64bob
- · Replies 5 ·
Coefficients of static and kinetic friction
- hatingphysics
- · Replies 1 ·
Weight of a 26 in³ crown made of gold or gold and lead
- Sabres151
- · Replies 1 ·
Calculating Launch Velocity for a Motorbike Jump
- QuantumKing
- · Replies 2 ·
How do I calculate the acceleration of a rock on a distant planet?
- h4x
- · Replies 5 ·
Calculate Work Required for a 71 kg Skier on a 30° Slope with Constant Velocity
- bearhug
- · Replies 1 ·
Finding the initial Y velocity, angle, etc from a kicked football
- Soupy21
- · Replies 2 ·
How does voltage push charges through a wire in a circuit?
- vg19
- · Replies 1 ·
Speed of Glider After Compressing Spring 0.14m
- bearhug
- · Replies 2 ·
How can a mule pull a cart if action and reaction forces are equal?
- stillflossin15
- · Replies 4 ·
Calculating Kinetic Energy: What Does 'v' Equal in Terms of Kinetic Energy?
- mikefitz
- · Replies 2 ·
Space Station and Arificial Gravity
- wolly6973
- · Replies 3 ·
Ball thrown upward at 49 m/s reaching height of 102.9 m
- JUka
- · Replies 3 ·
Average speed between two points
- synx
- · Replies 3 ·
Calculating the Speed of Light Around the Earth in One Day
- filo1111
- · Replies 2 ·
Centrifugal/Centripetal Acceleration
- thebigeis
- · Replies 1 ·
Kinematics - Motion along a straight line
- SA32
- · Replies 5 ·
Determine mass and acceleration
- dahatf0
- · Replies 1 ·
Tension in rope pulling sledge with friction at an angle
- Magellanic
- · Replies 4 ·
Calculating Force and Speed of a Snooker Ball
- glasgowm
- · Replies 3 ·
Normal force on skateboarder at bottom of circular arc
- UCrazyBeautifulU
- · Replies 9 ·
Find Reaction Time from 1.5 m/s Velocity Time Graph
- HELP_ME123
- · Replies 2 ·
Double-slit experiment wavelength with second-order bright fringe
- MadMatt
- · Replies 1 ·
Solving Projectile Motion: Minimum Speed for Daredevil Canyon Jump"
- magi58
- · Replies 1 ·
Speed of a pendulum at certain angles
- bearhug
- · Replies 1 ·
Finding gravitational force and velocity for a rocket near a star
- Meowzers
- · Replies 1 ·
Boxcar accelerating up incline, pendulum suspended within
- lizzyb
- · Replies 1 ·
Relationship between Lift and Centre Of Mass (aerodynamics)
- AussieDave
- · Replies 11 ·
Centrifuge acceleration and merry-go-round deceleration problems
- thebigeis
- · Replies 1 ·
Solving Tensions on a Rope: Magnitude of Force and Assumptions
- ysk1
- · Replies 4 ·
No problem, glad I could assist!
- thebigeis
- · Replies 5 ·
How to Calculate the Correct Path to Base Camp in a Whiteout?
- kara
- · Replies 9 ·
Heat to melt an iceberg and temperature rise in a dryer
- Vigo
- · Replies 1 ·
How Do You Calculate Acceleration in a Centrifuge?
- thebigeis
- · Replies 1 ·
Bobsled on frictionless then frictional track: 210 kg from rest
- wolly6973
- · Replies 2 ·
Spring gun ball at 45°: find max height and angles for 20 ft range
- physics dud
- · Replies 2 ·
Projectile Motion Lab: Solving for Velocity and Distance with a Ramp and Ball
- AznBoi
- · Replies 3 ·
Measuring Reaction Time Using Velocity-Time Graphs
- HELP_ME123
- · Replies 2 ·
Box dragged along resistant surface, work = ?
- lizzyb
- · Replies 2 ·
How Does Oil's Behavior on Water Demonstrate Molecular Structure?
- Aleksandar
- · Replies 5 ·
Roller Coaster and Apparent Weight
- thebigeis
- · Replies 1 ·
Speed difference at tower top vs. base on equator
- thebigeis
- · Replies 6 ·
Maximum Horizontal Distance for Flea Jumping
- poiuytrtyuiop
- · Replies 2 ·
How High Will a Projectile Rise if Launched at 10.1 km/s?
- bearhug
- · Replies 1 ·