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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Static and Kinetic Friction. Box sliding in the back of a truck.
- robbondo
- · Replies 7 ·
Solving Vector B in Polar Notation: -3.85 and -4.59?
- ramman1505
- · Replies 3 ·
Finding the Speed Needed to Propel Packages Up an Inclined Ramp
- robbondo
- · Replies 3 ·
Spring-mass period calculation gives 1.14 s but experiment shows 3.22 s
- jonesy3
- · Replies 2 ·
Work moving a charge at 60° to a uniform electric field
- Soaring Crane
- · Replies 1 ·
Free Fall Rocket Acceleration Problem
- peoplelikeus
- · Replies 4 ·
Simplifying Complex Circuits for Resistance Calculations
- xxkbxx
- · Replies 10 ·
What Is the Electric Force Between Two Charged Plates?
- Soaring Crane
- · Replies 8 ·
Finding maximum height and initial velocity for thrown balls
- moshilover
- · Replies 3 ·
Physics of bulletproof glass for a presentation
- Large dwarf
- · Replies 2 ·
Why are desert nights cold and days hot?
- Aladin
- · Replies 7 ·
Electric Potential and Field of a Uniformly Charged Ring
- debwaldy
- · Replies 7 ·
Time to reach relativistic speeds at 1G acceleration
- merovingian
- · Replies 12 ·
What Voltage Is Required to Melt Lead with a Capacitor?
- Touchme
- · Replies 1 ·
Does Gravitational Acceleration Change with Distance or Object Size?
- aparra2
- · Replies 6 ·
Calculating Forces on Cylinders on Inclines
- Bradracer18
- · Replies 2 ·
Error bars too large when entering absolute uncertainties
- L²Cc
- · Replies 3 ·
What is the force exerted by each support on the beam?
- Beyond Aphelion
- · Replies 13 ·
Question on Waves and Interference
- yanimated
- · Replies 3 ·
Acceleration perpendicular to an inclined plane
- Jacob87411
- · Replies 1 ·
Weigh heavier at the equator or at the north pole?
- hueyhuey
- · Replies 1 ·
How Do You Calculate the Tension in a String With Hanging Mass and Pulleys?
- mirandasatterley
- · Replies 1 ·
Is my Atwood machine lab conclusion and evaluation complete?
- L²Cc
- · Replies 1 ·
Finding potential change with field E = 2xî - 3y²j N/C
- thepassenger48
- · Replies 2 ·
Projectile Motion Homework: Find y(x) & Graph -45, 45 deg
- Weave
- · Replies 6 ·
How do I show the 100N force is cartesian form?
- suspenc3
- · Replies 2 ·
Finding launch angle from initial and final velocity
- shinystar716
- · Replies 1 ·
How Fast Must You Drive to Average 22 km/h Over 24 km?
- faustud.
- · Replies 2 ·
What was the original temperature of the water
- Tank08
- · Replies 22 ·
Momentum: Find Height to Receive Same Output for Mass m/2
- Cole07
- · Replies 9 ·
Find Position of Charge 3 in Two Charge System
- fsm
- · Replies 3 ·
How come we can't walk through walls?
- Wellsi
- · Replies 46 ·
Electron's Speed and Electric Field
- Soaring Crane
- · Replies 2 ·
Solve 0.700 Ohm Resistance Wire Length w/ 0.900 g Copper
- BunDa4Th
- · Replies 5 ·
Calculating Potential Difference for Electron Acceleration
- buttterfly41
- · Replies 1 ·
Find the final speed of the box
- jenita
- · Replies 15 ·
The relativity of time: Time dilation
- MrDMD83
- · Replies 1 ·
What Speed Makes Relativistic Momentum 11 Times Nonrelativistic Momentum?
- MrDMD83
- · Replies 1 ·
Determining Moment of Inertia of a sphere.
- aFk-Al
- · Replies 6 ·
How to distinguish a magnet from soft iron without tools
- ritwik06
- · Replies 8 ·
Two blocks on pulleys with 412N and 908N weights
- ludakrishna
- · Replies 1 ·
Freight train deceleration: stopping time and distance
- junesmrithi
- · Replies 1 ·
Average speed of caiman swimming in water then stream
- junesmrithi
- · Replies 1 ·
Potential versus potential energy
- siifuthun
- · Replies 3 ·
Speed of ball bearing from slingshot using sound delay
- junesmrithi
- · Replies 1 ·
Why did the paper rider jump when the second tuning fork was placed?
- pivoxa15
- · Replies 11 ·
What is the power loss due to resistance in the line?
- BunDa4Th
- · Replies 6 ·
How Does Thrust Affect the Weight Calculation of a Spacecraft on Planet X?
- Peach
- · Replies 5 ·
Finding lowest potential from electric field lines diagram
- Soaring Crane
- · Replies 7 ·
Why is mass included in the period calculation of SHM for point charges?
- Ronnin
- · Replies 3 ·
How Do You Solve a Center of Mass Problem on Frictionless Ice?
- schern42
- · Replies 5 ·
How Do You Calculate Net Gravitational Force on Aligned Particles?
- ludakrishna
- · Replies 1 ·
Calculating Temperature Change with Ice Cube in Coffee
- suspenc3
- · Replies 6 ·
Solve Mountain Climber Rope Tension Problem for Exam Prep
- CelesteSeven
- · Replies 23 ·
Calculate Upward Force to Keep Torque Balanced on Tray for Barry
- hazybluesky
- · Replies 3 ·
Solving a Parallel-Plate Capacitor Problem
- map7s
- · Replies 5 ·
Freight train deceleration and stopping distance
- junesmrithi
- · Replies 2 ·
Speed of ball bearing from a slingshot using sound delay
- junesmrithi
- · Replies 1 ·
What is the speed of each object 2.00 seconds after release?
- tnhoots
- · Replies 5 ·
Electric Energy and Spring Constant Problem
- imbroglio
- · Replies 3 ·
Which Book Best Prepares for USAPhO: Halliday and Resnick?
- OVB
- · Replies 3 ·
Constant Acceleration in a Runner's Straight Line Progression?
- elton_fan
- · Replies 2 ·
Three capacitor loops with conflicting charges and voltages
- gaillard
- · Replies 6 ·
Good Hypothesis for Atwood's Machine Lab
- L²Cc
- · Replies 3 ·
Calculating the Speed of Charged Spheres Moving Away from Each Other
- Canadian
- · Replies 4 ·
What is the Relationship between Tension and Force in a Pulley System?
- Peach
- · Replies 8 ·
Friction force of a car rolling down an incline at constant velocity.
- robbondo
- · Replies 3 ·
Is Average Velocity a Vector or Scalar?
- elton_fan
- · Replies 3 ·
Resistance of platinum wire at 100°C given temperature coefficient
- wakejosh
- · Replies 8 ·
Uniform Electric Field:finding Voltage
- aleksxxx
- · Replies 21 ·
Electron acceleration and kinetic energy
- wakejosh
- · Replies 1 ·
Why does the heavier team win at tug of war?
- JerusalemLuver
- · Replies 2 ·
CIRCUIT ANALYSIS: Non-Ideal OpAmp with 2 resistors - Find Thevenin Equivalent
- VinnyCee
- · Replies 1 ·
CIRCUIT ANALYSIS: 8 Resistors, 1 IVS, 1 Differential Op-Amp - Find Vo
- VinnyCee
- · Replies 2 ·
Why jar and stone weigh 600 gf, not 500+100+300 gf
- ritwik06
- · Replies 8 ·
Calculating equivalent capacitance, a question
- paul34
- · Replies 2 ·
Why does cutting a magnet in half reduce its magnetic strength?
- ritwik06
- · Replies 4 ·
What is meant by uniform magnetic field?
- ritwik06
- · Replies 5 ·
How much matter and anti-matter is needed to escape Earth's gravitational force?
- kingwinner
- · Replies 7 ·
Why aren't my topics being answered?
- ritwik06
- · Replies 4 ·
What Is the Vibrational Frequency of a Guitar String Based on Beat Frequencies?
- Malicious
- · Replies 1 ·
How Do You Calculate the Speed and Centripetal Acceleration of a Satellite?
- Coldchillin
- · Replies 1 ·
Simple machine with 81.7% efficiency: which type and is this realistic?
- scientist
- · Replies 5 ·
Kinematics - velocity of golfer
- RKNY
- · Replies 1 ·
Helicopter Rescue Device - real application
- rehaston
- · Replies 4 ·
Why Store Bar Magnets in Pairs with Iron Keepers?
- pivoxa15
- · Replies 7 ·
Calculating Cross-Sectional Area Using Boyle's Law and a Mercury Barometer
- ritwik06
- · Replies 3 ·
What is the velocity of sound in air at the temperature of the experiment?
- pivoxa15
- · Replies 11 ·
Circular motion with 35.5° angle and 1.35 m string
- JerusalemLuver
- · Replies 5 ·
How Much Force to Apply on a Lawnmower Handle at an Angle for Desired Velocity?
- danago
- · Replies 4 ·
How Can Ricardo Calculate Carmelita's Mass Based on Their Movement in a Canoe?
- darkys
- · Replies 1 ·
Question on an object falling 10 m
- pureouchies4717
- · Replies 13 ·
Why electric field falloff differs for point charge, line, and dipole
- kingwinner
- · Replies 3 ·
Calculate Position & Acceleration Vectors of Bird in xy-Plane
- Xtasy
- · Replies 5 ·
What Altitude Above Earth's Surface Would Result in Half Your Weight?
- Jaerik
- · Replies 13 ·
Solving Two Identical Conduction Spheres Problem
- AznBoi
- · Replies 3 ·
Max EMF Induced in AC Generator?
- pivoxa15
- · Replies 2 ·
Designing a Mousetrap Car with Weapons for Physics Project
- funkyhunky
- · Replies 2 ·
Uniform Circular Motion of a train
- darkmagicianoc
- · Replies 7 ·
What is the height at which the ball starts to move on a ramp?
- chamonix
- · Replies 2 ·