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 to Calculate Magnitude and Direction for Orv's Walk?
- lalahelp
- · Replies 6 ·
Why do kinematic equations (a) and (b) give different results?
- naaa00
- · Replies 4 ·
What is the concept behind varying resistance in a voltage divider circuit?
- logearav
- · Replies 5 ·
Why do positive ions striking the cathode emit electrons?
- logearav
- · Replies 2 ·
Variation of g with altitude and depth
- logearav
- · Replies 4 ·
How Do You Calculate Distance and Velocity Using Echo Times?
- Tycor
- · Replies 3 ·
Find the Coefficient of Kinetic Friction
- firewareagle
- · Replies 3 ·
Projectile motion car acceleration problem
- olliepower
- · Replies 7 ·
Projectile Motion - Rock Thrown Horizontally Off a Cliff
- Nickg140143
- · Replies 12 ·
Blocks, pulleys, more friction woes
- 1MileCrash
- · Replies 4 ·
Resistance in a wire, sanity check about units.
- Cade
- · Replies 3 ·
Finding initial velocity in free fall with given meters.
- Crusaderking1
- · Replies 3 ·
Find Change in the Electric Potential
- fal01
- · Replies 4 ·
How Do You Derive the Initial Vertical Velocity Equation?
- Aquaticus
- · Replies 14 ·
Time it takes for an electron and proton to collide
- gsingh2011
- · Replies 5 ·
What does resonance width mean in RLC circuits?
- Joe626
- · Replies 1 ·
What is the Initial Projection Angle of a Projectile with Varied Speed Heights?
- pereus
- · Replies 5 ·
How do I calculate the distance traveled by an airplane flying into a headwind?
- leroyjenkens
- · Replies 1 ·
What are the Vector Components for a Plane's Emergency Landing in Galisto?
- SaltyBriefs
- · Replies 1 ·
How Do You Calculate Vector Magnitudes and Directions?
- lalahelp
- · Replies 1 ·
Can Vectors with an angle 180(degrees+) have a negative magnitude?
- SaltyBriefs
- · Replies 3 ·
Showing photons travel at c with zero rest mass using de Broglie waves
- fluidistic
- · Replies 5 ·
Average speed for car traveling east then northeast
- lalahelp
- · Replies 1 ·
Maximum and Range of the Equation (Calc.)
- Calam1tous
- · Replies 3 ·
Work pumping oil out of partially filled horizontal tank
- Phox
- · Replies 2 ·
Calculating Force on Structures from Objects A and B
- brent7
- · Replies 1 ·
How Does Refraction Affect the Apparent Position of a Fish in a Bowl?
- Xyius
- · Replies 3 ·
Help with word problem (picture attached)
- Miike012
- · Replies 17 ·
Bullet drop at different ranges from a rifle
- csharsha
- · Replies 1 ·
Problem about finding the work done by friction force
- sample5
- · Replies 3 ·
How High Does the Cannonball Fly and What Are Its Final Velocity Components?
- lalahelp
- · Replies 5 ·
Calculating Distance and Direction Between Two Teams in a Remote Area Using GPS
- jehan4141
- · Replies 4 ·
Potential energy of a system of three charges.
- MSZShadow
- · Replies 4 ·
Questions with regard to gravit
- BeastST
- · Replies 3 ·
Maximum initial velocity of a tennis ball
- Aquaticus
- · Replies 6 ·
Ideal Gas Final Temperature and Heat Calculation
- Eastonc2
- · Replies 2 ·
Derivation of position vector in electric field problem
- jegues
- · Replies 9 ·
Package dropped from hot air balloon at 11 m height
- DrunkAppl
- · Replies 1 ·
Is light being emitted or absorbed?
- J-Girl
- · Replies 2 ·
Where can I find practice exams for straight lines of motion in physics?
- Brock Skywalk
- · Replies 2 ·
Motions with zero launch angle.
- matt@USA
- · Replies 4 ·
Can someone clarify some things for me?
- matt@USA
- · Replies 4 ·
How Do You Calculate Instantaneous Acceleration?
- Miike012
- · Replies 5 ·
Projectile motion equation question (2D)
- SchruteBucks
- · Replies 5 ·
Finding Brewster angle for air and glass
- ee1215
- · Replies 1 ·
Velocity graph (reverse direction)
- Arlene87
- · Replies 5 ·
Electric potential due to finite rod
- doubled
- · Replies 6 ·
Solving a Basketball Player's Projectile Motion Problem
- jsr219
- · Replies 1 ·
Initial Velocity and Acceleration: A Curious Conundrum
- Miike012
- · Replies 4 ·
Gauss's Law, Sphere (Electric Field
- jegues
- · Replies 1 ·
Hey, I'd love a hand - Introductory Mechanics
- Gordanier
- · Replies 3 ·
Why is Bill's velocity vs. time graph wrong?
- Arlene87
- · Replies 4 ·
Finding radial and tangential acceleration components
- nukeman
- · Replies 2 ·
How Does Sphere 3 Affect the Electrostatic Force on Sphere 2?
- JustHere155
- · Replies 2 ·
Thermodynamic question involving work
- Liquidxlax
- · Replies 4 ·
How can you let Initial position and initial velocity be equal to zero?
- Miike012
- · Replies 4 ·
How can I solve problem 2/120 without knowing the vectors for the cross product?
- charlies1902
- · Replies 7 ·
AP physics b free response questions
- le123
- · Replies 4 ·
Distance to moon from laser reflection time
- ColleenaMarie
- · Replies 2 ·
Calculating the difference in force between crumple zone cars and bull bar car
- Noobert
- · Replies 5 ·
How High Will a Failing Rocket Reach?
- QuarkCharmer
- · Replies 3 ·
Solve 1-D Kinematic Flea Jump Problem
- QuarkCharmer
- · Replies 6 ·
A problem with electric potential and conservation of energy
- MSZShadow
- · Replies 2 ·
Highland Games Hay Toss: Solving for Time and Direction in 2D Kinematics
- matt@USA
- · Replies 5 ·
Why does the displacement vector equal r times the unit vector in θ?
- athrun200
- · Replies 1 ·
How Does an Underground Oil Pocket Affect Gravity Measurements?
- tavo0116
- · Replies 1 ·
Bird's displacement from eastward motion and wind acceleration
- Joe_K
- · Replies 3 ·
Minimum separation to avoid collision between two cars
- firekid123
- · Replies 12 ·
Infinite Planes Eletric Field Question
- CH1991
- · Replies 1 ·
Force, friction problem. Can't start
- 1MileCrash
- · Replies 9 ·
Projectiles: Launch speed and horizontal distance
- gratsoy
- · Replies 2 ·
Calculus by variations Euler's eq
- Liquidxlax
- · Replies 1 ·
How Do You Calculate Resultant Velocity in Vector Addition?
- jord12321
- · Replies 6 ·
Maximum weight hung from roof at 35 degrees with perpendicular force limit
- Eats Dirt
- · Replies 2 ·
Straight line, fractional difference
- CarEnthusiast
- · Replies 1 ·
What's the problem asking me to find?
- pyroknife
- · Replies 4 ·
Does Friction Affect the Acceleration of a Sliding Block?
- inkandgold
- · Replies 3 ·
Concentric Eletric Field Question
- CH1991
- · Replies 1 ·
How Do Surface Charges Affect E-field Patterns in Prisms and Cubes?
- ch5112
- · Replies 1 ·
How to determine the resistance in a electric heater
- ronaldinho52
- · Replies 4 ·
Motion in Two Dimensions-Projectile off cliff
- Originallist
- · Replies 2 ·
Using Equations for Linear Motion at Constant Acceleration
- Miike012
- · Replies 1 ·
Finding acceleration through given equation
- dlp211
- · Replies 8 ·
How do I choose the correct angle when graphing vectors from unit notation?
- tunze
- · Replies 1 ·
Rocket Motion - calculating distance
- ileacus
- · Replies 8 ·
What does the symbol ℏ (h-bar) represent?
- J-Girl
- · Replies 2 ·
A couple basic physics questions(vector sum and kinematics)
- Crusaderking1
- · Replies 2 ·
Dimensionless physical quantities
- J-Girl
- · Replies 2 ·
Finding average acceleration by combining constant velocity vectors
- kmb11132
- · Replies 6 ·
Spring-block harmonic motion: velocity and acceleration at 8 cm
- KrhUhart
- · Replies 1 ·
Voltage drop over dependent current source?
- Inertigratus
- · Replies 5 ·
Binding energy of a single C-C covalent bond
- exzacklyright
- · Replies 2 ·
Vector Components In Box Problem
- Nanotech19
- · Replies 2 ·
How Does Altitude Affect the Weight of Water?
- yenting
- · Replies 3 ·
Is there really any such thing as an incompressible liquid?
- Abu Rehan
- · Replies 1 ·
How to Find Vector Angles and Differences?
- realism877
- · Replies 11 ·
Simple Vector Component Projection
- oddjobmj
- · Replies 2 ·
Photoelectric effect and blue light
- leslielau
- · Replies 12 ·
Simple Circuit diagram Question
- skykiller95
- · Replies 11 ·
Projectile Motion Archery Problem
- Intex
- · Replies 1 ·