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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Projectile Motion (Ball thrown against a Wall)
- TheSnacks
- · Replies 3 ·
How do I solve friction problems on horizontal and inclined planes?
- Damienwhoisdumb
- · Replies 1 ·
Initial velocity and angle from position equations x(t) and y(t)
- borow039
- · Replies 2 ·
So, what, I just take the first one?Yes, take the first one.
- neutron star
- · Replies 6 ·
Force between copper pennies if proton and electron charges differed by 0.00007%
- Daysi
- · Replies 5 ·
Solving for Tension in a Suspended 28kg Sign
- chrisfnet
- · Replies 4 ·
Projectile Motion Problem: Finding Object Speed for Given Height and Angle
- AlexT89
- · Replies 4 ·
Average Net Force on a Car 0-60mph: Weight Comparison
- shiney612
- · Replies 1 ·
Solve Semi-Atwood Machine Homework: m1=0.30kg, m2=0.45kg, θ=11°
- chrisfnet
- · Replies 3 ·
Finding acceleration of two blocks connected by string over incline
- stressedout09
- · Replies 1 ·
How Does Physics Explain Natural Phenomena and Technological Innovations?
- ritwik06
- · Replies 6 ·
Conductive Heat Loss in a house
- plexxity
- · Replies 6 ·
Magnitudes of Blocks on Surface
- southernguy13
- · Replies 8 ·
Calculating uncertainty for hydrogen atom
- crybllrd
- · Replies 6 ·
How to Write an Average Velocity Symbol in Microsoft Word?
- Monocerotis
- · Replies 2 ·
Finding force to accerate with given speed and time
- tutojean
- · Replies 1 ·
What Force Keeps the Block Stationary on a Frictionless Wedge?
- southernguy13
- · Replies 1 ·
Electron concentration with temperature change
- snoothie
- · Replies 5 ·
Calculate Pressure Increase of an Aerosol in Sunlight
- ibysaiyan
- · Replies 3 ·
How Do Coal and Nuclear Power Plants Compare in Efficiency and Waste Production?
- phys-unit
- · Replies 1 ·
What is the Velocity and Displacement of a Particle After 2.0s?
- chrisfnet
- · Replies 1 ·
Simple Harmonic Motion of a spring and a mass
- ibysaiyan
- · Replies 7 ·
Very basic Voltage/Period/Freq of circuits
- thedoge
- · Replies 2 ·
Photoelectric effect photocells
- alciefrederic
- · Replies 8 ·
How will I know how the second ball will move?
- karlkue
- · Replies 5 ·
Acceleration involving Newton's 2nd law
- man_in_motion
- · Replies 4 ·
Dart aimed at falling target collision with 100 m/s at 45°
- polak333
- · Replies 8 ·
How Far Can a Tourist Run Before a Bear Catches Up?
- ayerski
- · Replies 1 ·
Hiker Displacement: Find Distance East
- ayerski
- · Replies 1 ·
Solving Kinematics: A Ball Thrown Upward
- therest
- · Replies 1 ·
How are two capacitors connected by wires in series or parallel?
- nothilaryy
- · Replies 4 ·
What is the tension in a swinging vine with a given mass and velocity?
- stressedout09
- · Replies 4 ·
Simple kinematics problem: avg. acceleration if a car's going 12 m/s and accel
- therest
- · Replies 2 ·
Force to maintain constant velocity for ice skater
- pharmguy
- · Replies 2 ·
Average speed for multi-segment car trip with different speeds
- Luxurious
- · Replies 1 ·
Solving a Mass-Spring System: Max. Displacement of Mass
- dozappp
- · Replies 1 ·
How to find maximum temp. rise from a velocity value
- pondwire
- · Replies 5 ·
The percentage and force of Friction ( 9/28/09)
- sumo87
- · Replies 1 ·
Why does tan of my vector angle give 77° instead of 13°?
- tiffanysnsd
- · Replies 11 ·
How Does Static Friction Determine a Car's Maximum Acceleration?
- Hailcanadien
- · Replies 2 ·
Showing Plane's Relation to Earth w/ Two Vectors
- Max CR
- · Replies 1 ·
What Angle Should a Boat Point Upstream to Cross a River Straight?
- agadag
- · Replies 1 ·
Calculating Velocity Vector Below Niagara Falls Edge
- pookisantoki
- · Replies 1 ·
How do a(t), v(t), and x(t) relate in physics equations?
- xpack
- · Replies 2 ·
How Much Ballast to Achieve Upward Acceleration?
- WhoCares357
- · Replies 1 ·
Euqation of kinematics in two dimensions
- pookisantoki
- · Replies 3 ·
Euquations of kinematics in two dimensions
- pookisantoki
- · Replies 3 ·
How Do Different Dielectrics Affect Capacitance in a Parallel-Plate Capacitor?
- peaceinmideas
- · Replies 1 ·
How Does Filling a Canister with Oxygen Affect Its Weight?
- Luongo
- · Replies 1 ·
Finding position wit the energy method
- anubis01
- · Replies 7 ·
Find current passing through resistor
- snabelpablo
- · Replies 3 ·
Two masses on frictionless inclines and friction problems
- warfreak131
- · Replies 2 ·
Double Atwood Machine (With one end of the string connected to the ground)
- mikee
- · Replies 1 ·
Which Statements About Moving a Block Are True?
- sonutulsiani
- · Replies 1 ·
Ball on a string rotational motion(easy for a pro)
- synergix
- · Replies 5 ·
Calculating Net Force on a Spinning Ball
- synergix
- · Replies 3 ·
Police Officer Catches Car After 1.72 Seconds
- Loppyfoot
- · Replies 2 ·
Special Relativity, Light cones in Minkowski Diagrams
- king vitamin
- · Replies 1 ·
How Do You Calculate the Electric Field at a Point Near a Uniformly Charged Rod?
- deadpenguins
- · Replies 1 ·
What Is the Height of the Cliff If Both Balls Land Simultaneously?
- neutron star
- · Replies 1 ·
What is the total energy in joules expended
- KillerZ
- · Replies 16 ·
What is the tension in the cord holding a suspended sphere at a 23° angle?
- farleyknight
- · Replies 2 ·
Block in an incline connected to a spring
- Warmacblu
- · Replies 10 ·
How to calculate time constant tau for RL and RC circuits from their graph?
- 6021023
- · Replies 3 ·
Fluid Mechanics Ideal Flow Problem
- Wildcat04
- · Replies 1 ·
Tricky projectile motion question
- johnyk87
- · Replies 2 ·
Calculate Hole Depth: Stone-Drop Time Problem with Speed of Sound in Air
- jacksonpeeble
- · Replies 3 ·
How Do You Calculate Vector Displacement from a Plane to a Ship?
- yj-k91
- · Replies 2 ·
Relating Current Density and Drift Speed
- Oijl
- · Replies 1 ·
Physics: Inclined Plane With Wheels
- passphysics
- · Replies 1 ·
Solving the Friction of a Crate on a 20° Plane
- laxboi33
- · Replies 2 ·
Tension in the String of a Pulley System
- JamesEarl
- · Replies 7 ·
Can someone verify if my lab results make sense?
- Psych Berry
- · Replies 4 ·
Work / Power done to a particle
- Warmacblu
- · Replies 6 ·
Dimensional Analysis: Finding Relation Between v, p and p
- look416
- · Replies 1 ·
Four kinematics problems: falling object, braking car, thrown ball, velocity change
- lauralovesyou
- · Replies 3 ·
Experimental errors in a pressurized water bottle rocket
- lockieleonard
- · Replies 9 ·
Estimate the average force exerted by a shot-putter
- heyhowsitgoin
- · Replies 2 ·
How Does Charge Distribute on Varying Radii Conducting Spheres?
- psholtz
- · Replies 1 ·
Projectile Motion of Car and Cliff
- Graceful169
- · Replies 1 ·
How Do You Calculate the Masses in a Two-Block System with a Tension of 18 N?
- johnec22
- · Replies 4 ·
Solving Trajectory Problem: Initial Speed, Time, & Height
- PhilCam
- · Replies 3 ·
How Do You Convert a Velocity-Time Graph to a Position-Time Graph?
- 1irishman
- · Replies 1 ·
Ideal Gas Problem: Proving Coefficient of Volume Expansion
- Luongo
- · Replies 4 ·
Determining Air Resistance Force on Fire Helicopter's Water Bucket
- EcKoh
- · Replies 5 ·
Effects of Increasing Angle on Forces: A Conceptual Analysis
- PhysicsMark
- · Replies 2 ·
Plane to Ship Displacement (using component method)
- joeseppe
- · Replies 7 ·
Falling object and air resistance
- justin016
- · Replies 3 ·
Magnetic Field Given Radius and Energy
- balling12
- · Replies 5 ·
Light escaping through water surface via total internal reflection
- Cesium
- · Replies 2 ·
Calculating the Height of a Cliff using Projectile Motion
- coolkid26
- · Replies 2 ·
How is Translation Equilibrium Achieved in a Torque Experiment?
- chrisfnet
- · Replies 1 ·
The collision between two pucks
- agadag
- · Replies 4 ·
Unusual question regarding torque
- physics2004
- · Replies 1 ·
Distance a hamster runs in a wheel in 3.1 hours
- Ion1776
- · Replies 3 ·
Calculating Velocity and Acceleration Using Unit Vector Notation
- UNDEAD WAFFLE
- · Replies 4 ·
What is the tension in a double pulley system with given masses?
- peace1709
- · Replies 1 ·
Combining like terms in a physics problem
- dark-ryder341
- · Replies 3 ·
Change in velocity, average acceleration
- salaam
- · Replies 2 ·
Current Density and Conductivity and Electric Field
- Oijl
- · Replies 2 ·