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 calculate net force given two force vectors and other parameters?
- synergix
- · Replies 2 ·
Relative Velocity of Rain Drops in a Moving Vehicle
- PhysicsMark
- · Replies 6 ·
A cart and pulley problem with a twist
- AlexTheTerp
- · Replies 6 ·
Drawing diagram given direction and degrees
- copitlory8
- · Replies 1 ·
Fairly simple rolling and slipping ball problem.
- cpfoxhunt
- · Replies 4 ·
Projectile Motion Problem -Diving off cliff
- Chandasouk
- · Replies 3 ·
Elastic Collision, Equal Masses
- Cruncher
- · Replies 2 ·
Conservation of Energy (2-Dimensional)
- interxavier
- · Replies 1 ·
Equilibrium Style Question involving a Weight
- Emethyst
- · Replies 3 ·
How to Use Newton's Laws to Solve a Sliding Ramp Problem
- ningaman129
- · Replies 4 ·
Critical angle- two climbers in a roped party
- mmoadi
- · Replies 11 ·
How long does it take a 9.0 N force to stop a dog and skateboard?
- Jonathan Teas
- · Replies 1 ·
How Do Velocities Affect the Mass Ratio of Skaters?
- dorian_stokes
- · Replies 1 ·
How Does an AC Generator Produce EMF?
- umar.ali
- · Replies 1 ·
Head-on Collision: Calculating SUV Velocity
- IAmSparticus
- · Replies 1 ·
Velocity in uniform circular motion
- waldvocm
- · Replies 2 ·
Inclined Pulley system, little information given.
- alexgmcm
- · Replies 3 ·
How far does a box slide given friction coefficient and initial velocity?
- lynk
- · Replies 4 ·
Finding coefficient of friction with sliding and acceleration
- Huskies101
- · Replies 4 ·
How much ahead the front axle does the wheel jet the water that it pick
- mmoadi
- · Replies 4 ·
What Went Wrong with Calculating Impulse in Impulse-Momentum Theory?
- IAmSparticus
- · Replies 7 ·
The conversion of electrical energy to heat energy.
- Sirsh
- · Replies 7 ·
What is the Solution for a Particle Moving Under a Repulsive Central Force?
- gcfve
- · Replies 5 ·
Mechanical properties of solids questions
- Mandavi
- · Replies 1 ·
Why does angular momentum become zero when a rotating system breaks apart?
- Borek
- · Replies 8 ·
What happens to the center of mass after a collision?
- exparrot
- · Replies 1 ·
Work energy theorem involving a pulley
- Pogorz
- · Replies 9 ·
How Does Gauss's Law Apply to Non-Spherical Geometries?
- q3solid
- · Replies 5 ·
Calculating Position in Simple Harmonic Motion with Given Amplitude and Velocity
- vipertongn
- · Replies 1 ·
How do basketball players jump straight up into the air?
- sweetheart901
- · Replies 1 ·
Energy Transfer in a Water and Aluminum Pan System
- rkjul
- · Replies 3 ·
Subtracting Vectors: How to Find Magnitude of A-B
- nrdiamon
- · Replies 1 ·
Planar Kinematics of Rigid Bodies - Relative Motion
- aolse9
- · Replies 1 ·
Semiconductors and light effects
- omri3012
- · Replies 1 ·
What is the spring force constant k for a ball dropped onto a spring?
- irbombardmnt
- · Replies 2 ·
How Does a Leaking Cubical Pendulum Affect Its Period?
- kashiark
- · Replies 1 ·
Static friction on inclined surface
- drkidd22
- · Replies 3 ·
Projectiles, 2D Motion, Bullet falling
- copitlory8
- · Replies 3 ·
Force on rectangular coil near current-carrying wire
- fball558
- · Replies 12 ·
Force on wire with two straight ends and semicircle in magnetic field
- Dell
- · Replies 20 ·
Can current flow through a battery in the same direction as its EMF?
- libelec
- · Replies 9 ·
What is Lenz's Law and how does it relate to magnetics?
- Schoomy
- · Replies 3 ·
Vectors, Forces Accelerating a Train
- blackcannon
- · Replies 1 ·
Calculating Black Hole Mass Gain from X-ray Emissions of Binary Systems
- ndoc
- · Replies 3 ·
Newton's Third law problem Astronaut and Force
- sweetheart901
- · Replies 2 ·
Conservation of Kinetic Energy Proof
- Davey Boy
- · Replies 6 ·
Three strings and a weight, need tensions in strings
- thedarkone80
- · Replies 1 ·
Bullet fired from a moving train.
- Pinkk
- · Replies 8 ·
Minimum distance from a repulsive central force
- gcfve
- · Replies 4 ·
How Fast Are Rockets Moving at Moon's Orbit?
- darklich21
- · Replies 3 ·
What Determines the Terminal Speed of a Skier?
- White_Noise
- · Replies 7 ·
What is the speed of the rock physics
- melodrameric
- · Replies 7 ·
Maximum distance in orbit from center of a planet
- gcfve
- · Replies 2 ·
How Do You Calculate Maximum Spring Compression in an Inelastic Collision?
- darklich21
- · Replies 1 ·
Finding Kinetic Energy Loss in Equal Mass Collisions
- dorian_stokes
- · Replies 1 ·
Total work done by friction as block slides down a plank
- debrickshaw
- · Replies 7 ·
Rope tension on a mountain climber
- Firestrider
- · Replies 1 ·
Steel hammer bouncing to 400mm height in hardness test
- mk1tt16v
- · Replies 2 ·
A Banked Turn With Friction- min and max velocity
- mmoadi
- · Replies 2 ·
How much work and how much force do we use in pushing a box
- mmoadi
- · Replies 2 ·
Does a kicked football clear a 3.00m bar 29.4m away?
- waldvocm
- · Replies 3 ·
Calculating Magnetic Field Strength of Magnetron
- Wizardofwaz
- · Replies 16 ·
How Do You Calculate the Total Charge in a Solenoid with Time-varying EMF?
- latitude
- · Replies 1 ·
Newtons cooling law not making sense
- pezgoon
- · Replies 10 ·
Cannon fired up a hill at angle alpha for maximum range
- emyt
- · Replies 60 ·
Average force between bat and ball with given mass and velocities
- futureteacher
- · Replies 1 ·
What is the force exerted by a football on a kicker's foot?
- euphtone06
- · Replies 10 ·
Which is faster, a golf ball or ping pong ball with equal kinetic energy?
- fattydq
- · Replies 2 ·
Force exerted by water on diver (2nd law of Motion)
- bydesign
- · Replies 2 ·
Calculating Work Done by Horse in 9.9 minutes
- Zhalfirin88
- · Replies 14 ·
Thermodynamics and Steam Engine
- fallen186
- · Replies 2 ·
Using physics to prove my innocence
- Enidox
- · Replies 1 ·
How Much Initial Kinetic Energy is Rotational in a Rolling Sphere?
- G-reg
- · Replies 1 ·
Rolling as Translation and Rotation Combined
- G-reg
- · Replies 5 ·
Using a Geiger–Müller tube to prove inverse square law
- beatlemaniac
- · Replies 1 ·
Pendulum Impact Force Calculation
- mh5594
- · Replies 1 ·
Pulley Mass Calculation: Atwood's Machine
- becca89
- · Replies 1 ·
Three vectors A, B, and C add together to yield zero
- crono_
- · Replies 2 ·
Average speed of the gasoline as it leaves the nozzle?
- Punkyc7
- · Replies 10 ·
Which spot on earth would have the fewest # of satellite's visible?
- bigmac
- · Replies 20 ·
VERY DIFFICULT 2-D Motion Problems
- Power of One
- · Replies 5 ·
Finding slope units and percent error for period vs weight graph
- kellenm
- · Replies 4 ·
Finding Tension when Mass Accelerates
- allielove13
- · Replies 3 ·
Magnetism Question Can't figure it out
- harrism1
- · Replies 3 ·
Solving for v, we getv=\sqrt{\frac{2}{m}\int_{x_1} ^{x_2} F dx}
- ssm11s
- · Replies 1 ·
How fast is the rod moving after it has traveled 8.00 m down the rails?
- sweetipie2216
- · Replies 3 ·
Solving Vector Problems with Law of Sines and Pythagorean Theorem
- coolkid26
- · Replies 1 ·
Calculating Average Force and Mass: Weightlifting and Shelf-Moving Examples
- defetey
- · Replies 1 ·
me on this prolem ( Magnetic Field).
- vu95112
- · Replies 5 ·
Momentum, conservation, collision
- Jimmy Tango
- · Replies 1 ·
Pulley-ramp projectile launcher: acceleration, tension and range
- SlainTemplar
- · Replies 1 ·
True statements about charges and fields in metal wire equilibrium and steady state
- feedmeister
- · Replies 4 ·
Where is the Velocity of a Particle Moving Along the x-axis a Maximum?
- interxavier
- · Replies 1 ·
Tension of string between two blocks
- stosw
- · Replies 1 ·
Finding Acceleration of Gravity of Fictional Planet
- to819
- · Replies 2 ·
Finding the normal force from a lawnmower pushed at 32 degrees
- lolzwhut?
- · Replies 2 ·
Solving a Physics Problem: Determining Seal's Slide Distance
- einsteinette
- · Replies 2 ·
Tension and speed of a carnival swing chair on a 15 m cable at 60°
- Punkyc7
- · Replies 2 ·
Photoelectric Effect and electrons
- Jules18
- · Replies 4 ·