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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Two spacecraft 13,500 m apart docking with constant acceleration
- r_swayze
- · Replies 6 ·
Calculating Peak Current in a Series RLC Circuit
- Twoism
- · Replies 1 ·
Spring Constant and Deformation
- tigerwoods99
- · Replies 10 ·
Calculating Projectile Motion: Distance of Cannonball to Black Pearl
- SherazSiddiqu
- · Replies 1 ·
Why does a rotating coasting system slow down when a slice of bread is added?
- zainriaz
- · Replies 3 ·
Finding cross product of two vectors a,b
- mmattson07
- · Replies 1 ·
How Long Must a Runner Accelerate to Finish a 10,000-m Run on Time?
- leroyjenkens
- · Replies 45 ·
How much work has a pitcher done on a baseball
- physicsgsu
- · Replies 1 ·
Does Clockwise Spin Shorten Ball's Range?
- zorro
- · Replies 2 ·
Instantaneous velocity and cos, sin
- fishface1959
- · Replies 6 ·
Ranking three football paths by flight time, horizontal velocity and initial speed
- mmattson07
- · Replies 8 ·
Solving a Puzzling Homework Problem: Pushing a Lawn Mower
- iRaid
- · Replies 3 ·
Relative velocity of two ships problem
- Dante Tufano
- · Replies 6 ·
Potential and Kinetic Energy: Down an incline with spring
- jti3066
- · Replies 2 ·
Calculating stress at points A and B in a bent beam
- williamx11373
- · Replies 1 ·
Potential Energy: What is 1 Joule?
- zainriaz
- · Replies 5 ·
Electric Field outside a Coaxial Cable
- calcuseless
- · Replies 2 ·
Thermodynamic heating air problem
- Tusike
- · Replies 3 ·
Simplifying (x² √(1+x) - x²)/√(1+x)
- mkeg1
- · Replies 1 ·
Find the work done by nonconservative forces in stopping the plane.
- stuckne1
- · Replies 4 ·
How Can Hot Water Turn Ice to Water?
- Kyoma
- · Replies 4 ·
What Value of h/H Maximizes Time to Reach the Ground?
- The legend
- · Replies 2 ·
Calculating Force Needed to Lift 79kg Mass at Const. Speed
- daltomagne
- · Replies 3 ·
What does a transistor do and how do its terminals work?
- CalcYouLater
- · Replies 2 ·
Atomic Physics - Xrays and energy
- pat666
- · Replies 6 ·
Distance between two objects dropped at different times
- 3005
- · Replies 4 ·
Angular velocity of three gears attached (showed work)
- howru
- · Replies 11 ·
What Is the Acceleration of a Cart Connected to a Hanging Block on an Incline?
- polishdude20
- · Replies 3 ·
Need help visualizing what an object is doing with force applied
- preluderacer
- · Replies 5 ·
A cyclist travels 26.7 km in 54 min 16 s. What is his average velocity in m/s?
- nerdemcee
- · Replies 4 ·
Why does 6N at 360° give -6 in vector addition?
- uniquesoljuh
- · Replies 17 ·
Calculating the trajectory of a projectile
- ://Justice
- · Replies 1 ·
Help with three kinematics problems about acceleration and collision
- Legend05
- · Replies 3 ·
Question regarding relative velocities
- JoeWr18
- · Replies 1 ·
Lost on Projectile motion problem
- exk4
- · Replies 3 ·
How Do You Calculate Instantaneous Velocity in Vector Animation?
- kk727
- · Replies 2 ·
Problem of the week - gravitation
- yoyigloria
- · Replies 5 ·
Which Solution is Incorrect and Why?
- misterpickle
- · Replies 4 ·
How Do You Calculate a Rocket's Initial Upward Acceleration?
- bewger
- · Replies 8 ·
Man towing airplane and truck stopping distance with friction
- CAV40
- · Replies 1 ·
Finding the New Angle of Inclination: A Projectile Motion Problem
- Zipzap
- · Replies 2 ·
Speed after falling 1.2 km with constant gravity
- ADH
- · Replies 20 ·
A kid jumps a meter into the air. How long before he lands?
- ADH
- · Replies 1 ·
Deviation of wavelengths through barium crown pism
- Liquidxlax
- · Replies 9 ·
Nonuniform Circular Motion-Newtonian bucket problem
- Dougggggg
- · Replies 2 ·
Rock kicked horizontally from building strikes window 14 m away and 16 m down
- huz521
- · Replies 2 ·
Relativity of simultaneity for spacecraft observing distant explosions
- mt8891
- · Replies 5 ·
Minimum distance in which the car will stop?
- hm8
- · Replies 1 ·
Could there be a mistake in the textbook solutions?
- nikstar
- · Replies 12 ·
Work and gravitational potential energy involving an optical illusion
- MikWillis
- · Replies 1 ·
Electrostatic Potential Energy of a Conducting Sphere
- George3
- · Replies 4 ·
How do I calculate the current in a diode?
- vodkasoup
- · Replies 9 ·
How Does Potential Energy Influence Particle Motion in Physics?
- zorro
- · Replies 5 ·
Solving for Work and Friction in Kinetic Energy Equations
- mohabitar
- · Replies 8 ·
Power produced by a rotation disk
- kenshin6249
- · Replies 9 ·
Potential/Kinetic/Total Energy of hydrogen atom absorbing photon
- louza8
- · Replies 1 ·
Calculating Maximum River Crossing Distance with Initial Velocity of 30 m/s
- stressedgirl
- · Replies 5 ·
Unusual difficult kinetic problem
- dirk_mec1
- · Replies 1 ·
What's the Correct Formula for Finding the Speed of a Thrown Ball?
- kari82
- · Replies 1 ·
Kirchoff's Law: Identifying Loops in Circuits
- thereddevils
- · Replies 2 ·
Plank velocity when compressed spring pushes block off
- zorro
- · Replies 5 ·
Why can't a runner's acceleration exceed 10µ m/s²?
- furor celtica
- · Replies 2 ·
How Does the Sun's Power Output Compare to a Car Battery?
- seto6
- · Replies 6 ·
Saturn V first stage thrust and launch pad acceleration
- Amber_
- · Replies 1 ·
Determine magnitude of force acting on block on inclined plane
- JJBladester
- · Replies 2 ·
Calculating Deceleration of Man on Bicycle with Air Resistance
- furor celtica
- · Replies 1 ·
Speed at the moon's surface starting with escape velocity from Earth
- hime
- · Replies 9 ·
Compression in Accelerating Springs.
- jimmyw
- · Replies 2 ·
Electric Potential inside and outside a spherical Shell
- physwil90
- · Replies 2 ·
How Does Torque Affect Ladder Equilibrium?
- ThomasMagnus
- · Replies 12 ·
Non-Uniform Circular Motion problem
- Zipzap
- · Replies 9 ·
Show that a 2D harmonic elliptical path has constant total energy
- theuniverse
- · Replies 11 ·
Find the largest mass that can sit on an incline without accelerating
- vande060
- · Replies 1 ·
Circular Motion Problem (Using Newtonian Physics)
- Dougggggg
- · Replies 6 ·
Electric Potential inside insulating solid sphere.
- erogard
- · Replies 5 ·
Maximum mass box a 72 kg man can push at 30°
- jessicak
- · Replies 12 ·
Finding Force between 2 objects
- rollercoaster
- · Replies 1 ·
How Do You Apply Kirchhoff's Current Law to Find vx and ix in This Circuit?
- Cursed
- · Replies 1 ·
Light ray entering glass sphere parallel to diameter, reflecting back
- ceran
- · Replies 20 ·
What is Solving a Statics Problem: Finding the Resultant Force?
- findley
- · Replies 5 ·
2 masses connected via pulley system.
- nlsherrill
- · Replies 2 ·
Solved: Radioactive Decay Equations, Identify Type of Decay
- ProPatto16
- · Replies 4 ·
Friction (horizontal) Applied Greater Force than Equilibrium
- PraetorGT
- · Replies 1 ·
Is Pushing Against a Car's Motion Positive Work?
- Thefox14
- · Replies 3 ·
2 Part Kinematic Equation Problem
- demonslayer42
- · Replies 2 ·
Rocket; velocity and postion vectors
- masterstakes
- · Replies 1 ·
Energy, U, stored in springs as a function of y, the distance
- TonyTheBeat
- · Replies 1 ·
Static friction, car going around a turn
- mmiller9913
- · Replies 1 ·
Height equation in a weird way.
- daniels.tyler
- · Replies 2 ·
Grade 11 Physics: A subway train
- soniaFB
- · Replies 1 ·
Conservation of motion what the velocity of other fragment
- leonne
- · Replies 2 ·
Finding unknown displacement vectors when hiker returns to start
- EL ALEM
- · Replies 3 ·
How Does Friction Affect a Penguin Sled on an Inclined Plane?
- mmiller9913
- · Replies 6 ·
Having trouble with this Moments about the coordinate axes problem
- btbam91
- · Replies 2 ·
Mechanics, specifically Moment question
- SirMarksAlot
- · Replies 2 ·
Significant Figures: Cylinder Volume Calculation
- zorro
- · Replies 5 ·
Determine the units of the quantity described
- knotloved
- · Replies 3 ·
Will an Applied Force of 5 N Move a 1 kg Box?
- OThePestO
- · Replies 3 ·
How Do Forces Affect the Acceleration of Contacting Cylinders?
- mmmboh
- · Replies 9 ·
Why does the bird's weight produce horizontal tension in the wire?
- hm8
- · Replies 9 ·