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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A rock rolling down an incline-velocity and force
- NDbogan
- · Replies 3 ·
Why does a car pushing a truck exert equal force back?
- ILoveCollege
- · Replies 3 ·
Kinematics - finding time given height and acceleration
- indietro
- · Replies 5 ·
Which equation is correct for wavelength from energy
- semc
- · Replies 1 ·
Initial velocity when deacelerating at a constant rate
- xc630
- · Replies 1 ·
What was the car's velocity at t=0?
- indietro
- · Replies 4 ·
Uniform electric field and a proton
- tag16
- · Replies 6 ·
Solve a Physics Problem: Finding Time in the Air for a Kangaroo Jumping 3.0m
- rakesh44
- · Replies 1 ·
Car approaching intersection at yellow light
- rakesh44
- · Replies 3 ·
Physics highest point reached by skateboarder
- triplel777
- · Replies 9 ·
How Much Work Does Friction Do on a Crate Sliding Down a Ramp?
- cbeeson23
- · Replies 2 ·
Work done by frition on a crate
- cbeeson23
- · Replies 6 ·
Golf ball dropped from tall building: velocity after 3.99 s and impact speed
- prowlerplayer
- · Replies 1 ·
How Does Air Resistance Impact Projectile Motion in Sports?
- hidajua
- · Replies 1 ·
What is the Maximum Height a Basketball Reaches When Thrown Upward?
- swirly90
- · Replies 1 ·
Ranking the force of point charges
- macaco
- · Replies 3 ·
What is the capacitance of the system?
- exitwound
- · Replies 4 ·
Tension from Incline Plane: Only Measured in Horizontal Direction?
- yougene
- · Replies 3 ·
Should the driver make a run for it at an intersection with a yellow light?
- Pindle
- · Replies 1 ·
Magnitude and Direction of Charged Particles
- dmullin4
- · Replies 3 ·
Solving a Volcanic Eruption Problem with Constant Acceleration Equations
- martyk
- · Replies 1 ·
Finding Spring Constants After Cutting a Spring
- stpmmaths
- · Replies 3 ·
Minimum distance to avoid a collision
- MechaMZ
- · Replies 3 ·
How Fast Are Proton and Antiproton Moving Towards Each Other?
- beecher
- · Replies 2 ·
Direction of sailboat velocity after wind gust
- salaam
- · Replies 7 ·
What is the missing formula for projectiles launched at an angle?
- xxpbdudexx
- · Replies 6 ·
Solve Newton's Second Law: Find Angle of Elevation w/ 1.86cm Blocks
- oceanflavored
- · Replies 3 ·
Why Is My Vector Calculation Incorrect?
- sowmit
- · Replies 3 ·
Calculating Total Time for an Inclined Plane Motion Problem
- anubis01
- · Replies 7 ·
Electric field from potential V = 1920x² between parallel plates
- peaceinmideas
- · Replies 6 ·
Police car catching a stolen truck at constant speeds
- karkrash
- · Replies 2 ·
When is cosα a x component or y component in a problem?
- pillar
- · Replies 1 ·
How to Solve Physics Free Fall Problems
- Leo34005
- · Replies 2 ·
Does the Correspondence Principle Confirm Equal Probability in Quantum Systems?
- nargle
- · Replies 2 ·
Thermal Stress (Thermodynamics)
- Luongo
- · Replies 3 ·
Finding the Location of a Projectile After 3 Seconds
- Want to learn
- · Replies 3 ·
Speed of proton and electron accelerated through 135 V potential difference
- ktobrien
- · Replies 2 ·
Answers to physics homework questions 3 and 4b
- Leo34005
- · Replies 1 ·
Projectile Motion: Given Horizontal Distance Travelled and Time Taken
- zenythz
- · Replies 1 ·
Calculating Time and Velocity in a Projectile Motion Problem
- Rubix
- · Replies 6 ·
Force Vector Directed Along A Line
- camino
- · Replies 1 ·
Spacetime Invariance and Lorentz Equations
- LUphysics
- · Replies 1 ·
Deriving the 4th equation of motion
- danksnaks
- · Replies 1 ·
Angle between two equal magnitude vectors that sum to 6.37j
- Rail24
- · Replies 2 ·
Find the normal force and magnitude of acceleration.
- sonutulsiani
- · Replies 4 ·
Finding this displacement on a v/t graph
- jeffc93
- · Replies 1 ·
Four kinematics problems: thrown ball, falling pile driver, meteor, accelerating car
- dagitt
- · Replies 1 ·
Tension in strings supporting a 100-N weight
- sonutulsiani
- · Replies 12 ·
Throwing a ball upward on top of a building, find height of building
- ncwalke2
- · Replies 1 ·
How do I set up these problems?
- LocalYocal
- · Replies 1 ·
How Do You Calculate the Second Vector in a Vector Displacement Problem?
- singingblonde
- · Replies 1 ·
Acceleration When Pulled By Elastic Cord
- mill4864
- · Replies 1 ·
Why Does Running in the Rain Get You More Wet?
- fattydq
- · Replies 1 ·
How do negative charges accelerate in an electric field?
- Anden
- · Replies 4 ·
Harmonic Motion with Electricity
- nothilaryy
- · Replies 1 ·
What Is the Relative Uncertainty in the Square Root of a Measured Distance?
- unequal
- · Replies 4 ·
What is the solution to the tricky pendulum question on page 6?
- Chewy0087
- · Replies 1 ·
What is the Resistive Force of Air on a Baseball Pitch?
- MechaMZ
- · Replies 11 ·
Superposition of electric fields from uniform charge density
- jamdr
- · Replies 4 ·
Change in gravitational potential energy for lowering a textbook
- Ion1776
- · Replies 2 ·
Relativistic Mechanics (momentum)
- Cmertin
- · Replies 4 ·
Differential equations particle motion
- philnow
- · Replies 12 ·
Jump serve minimum and maximum speed to clear net and land in court
- linds1369
- · Replies 3 ·
Why microwave oven grids have specific hole dimensions and why only polar molecules heat
- guilesar
- · Replies 1 ·
How High Does a Rocket Go if It Accelerates at 79.0 m/s² for 1.90 Seconds?
- harrism1
- · Replies 3 ·
Force on projected object at its highest point. What is the net force?
- peterpam89
- · Replies 3 ·
Determining the Minimum Force to Push a Crate
- semc
- · Replies 3 ·
What Happens to the Speed and Proximity of Two Charged Metal Spheres in Motion?
- Digdug12
- · Replies 1 ·
Is negative acceleration always related to a decrease in speed?
- Loppyfoot
- · Replies 3 ·
Friction problem with banked curve given static friction coefficient
- zenith12
- · Replies 3 ·
IB Extended Essay in Physics, focusing on Fibre optics, any pointers?
- TheJoe
- · Replies 1 ·
Why is the scale reading 397 N when the elevator is slowing down?
- MechaMZ
- · Replies 2 ·
Finding Range of Object Shot at 40° Angle
- Want to learn
- · Replies 4 ·
A box sliding down a incline plane
- semc
- · Replies 5 ·
Calculating Time for an Object to Fall in One Dimension
- ShamTheCandle
- · Replies 4 ·
Object sliding up/down with a angular speed
- MechaMZ
- · Replies 6 ·
Finding the Magnitude of Vector Sum from Components
- Want to learn
- · Replies 7 ·
Can You Derive F = gamma^3*ma from Newton's Second Law?
- beecher
- · Replies 2 ·
Calculating Passenger Speed Relative to Shore: A Multi-Step Problem
- StephanieF19
- · Replies 1 ·
Electric Field due to two points
- Digdug12
- · Replies 1 ·
Newton's Laws with Friction: Two Blocks
- melv14
- · Replies 3 ·
What are the two angles of a successful field goal kick?
- StephanieF19
- · Replies 10 ·
Acceleration of a horizontal system with friction
- bolivartech
- · Replies 6 ·
Force on a water tank hatch 1.15m tall with 1.87m water depth
- Qbit42
- · Replies 4 ·
Finding the units of the gravitational constant G
- CocoonOHorror
- · Replies 6 ·
What is the Magnitude of the Electric Field to Just Miss the Upper Plate?
- Digdug12
- · Replies 1 ·
How Far Will a Race Car Travel After Running Out of Gas?
- irNewton
- · Replies 2 ·
Reference Frame Question: How come wind relative to boat doesn't matter?
- yougene
- · Replies 2 ·
Electric field 0.1mm above charged plate.
- megr_ftw
- · Replies 1 ·
Calculating Angular Speed for Proposed Space Station
- Fihzix
- · Replies 2 ·
Mass of silver to cover a 2.0 x10^2 cm2 object with .20mm thick layer
- geoti8
- · Replies 2 ·
Motion: Solving problems using equations
- tryintosurviv
- · Replies 4 ·
How Do You Calculate Net Resistance in a Circuit?
- DharmaSC815
- · Replies 1 ·
Arrow trajectory and swing forces using vector components
- jampop
- · Replies 1 ·
Two blocks sliding on top of each other
- pharoh123
- · Replies 1 ·
Work and potential energy calculations: stroller, picture frame, textbook
- Ion1776
- · Replies 9 ·
How Do You Convert dB to W/m^2 for a Test?
- tiger1
- · Replies 1 ·
What is the absolute uncertainty in your estimate of the total mass?
- simond
- · Replies 1 ·
Acceleration during collision with garbage can from 44.6 m fall
- GuitarHero
- · Replies 3 ·
Coulombs Law of two metal balls
- jayz618
- · Replies 24 ·