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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Solving Spring Tray Problem: Height Above Point A When Ball Leaves Tray
- Punkyc7
- · Replies 1 ·
Finding racket height from projectile motion with constant horizontal velocity
- JohnApplebee
- · Replies 2 ·
Calculating the Efficiency of a Reversible Refrigerator
- ajmCane22
- · Replies 4 ·
Honors physics intermediate force question
- Kalix
- · Replies 7 ·
How Much Force Can a Human Femur Withstand Before Breaking?
- jphillip
- · Replies 2 ·
Astrophysics - Temperature of a star via flux and wavelength
- cwolfx2
- · Replies 2 ·
Calculating Electric Field of Spherical Charge Distribution
- tome101
- · Replies 3 ·
Converting gold atoms lost to moles using atomic mass
- mysticxhobo
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What Is the Final Velocity of a Flatcar When Hoboes Jump Off?
- kraigandrews
- · Replies 6 ·
What Is the Threshold Energy for Lithium-Helium Nuclear Reactions?
- kraigandrews
- · Replies 1 ·
What is the Definition of Resistivity and its Relationship to Resistance?
- ghostbuster25
- · Replies 2 ·
How Does Traveling at 0.9c Affect Communication Signal Frequencies?
- zerakith
- · Replies 3 ·
Equivalent capacitance of an infinite system
- Fahamedi
- · Replies 1 ·
Work required to move particles
- RKOwens4
- · Replies 1 ·
Equivalent resistance between points a and b
- zetologos
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Calculating |vect.A + Vect.B + Vect.C|
- draotic
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Understanding Inner and Outer Radius
- mysticxhobo
- · Replies 2 ·
Finding Angles after Perfectly Elastic Collisions
- AJKing
- · Replies 12 ·
Net force holds object in equilibrium
- Newlander
- · Replies 3 ·
Projectile: time max height reached
- Newlander
- · Replies 4 ·
Rolling sphere in cylindrical trough executes SHM
- AriAstronomer
- · Replies 1 ·
A Numerical on motion in one dimension .
- sankalpmittal
- · Replies 14 ·
Projectile: questioning need to double time
- Newlander
- · Replies 2 ·
Minimum work to stack six 30N books into a pile
- Ipos Manger
- · Replies 2 ·
Football distance contest: James at 57° 75m/s vs Steve at 48° 100m/s
- Kalix
- · Replies 5 ·
Lifting books - Potential Energy
- Ipos Manger
- · Replies 1 ·
Does Doubling Gas Molecules Affect RMS Speed?
- ajmCane22
- · Replies 1 ·
Understanding SHM Equations of Motion
- Peter G.
- · Replies 2 ·
About radiance equation in Radiometry
- dammage
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Coulombs Law. Calculate Charge Magnitude and Direction
- AClass
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How Does Mass Transfer Between Rotating Drums Affect Their Angular Velocities?
- Order
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Calculating Electric Force on an Electron Near a Point Charge
- dois
- · Replies 10 ·
Finding the area of an oil slick
- iamjohnny56
- · Replies 3 ·
Finding net force on log from two ropes at 140° angle
- mom2maxncoop
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How can the forces on a pendulum be calculated when encountering a peg?
- kero
- · Replies 2 ·
Waves question (wavelength, period, etc)
- ally.hady
- · Replies 6 ·
Temperature coefficient of resistance problem
- sphys4
- · Replies 1 ·
Magnitude of torque due to gravity
- dorian_stokes
- · Replies 4 ·
Finding potential between two points with opposing voltage sources
- Femme_physics
- · Replies 96 ·
Angular velocities in a linkage mechanism with OA = 0.3 m
- adu1905
- · Replies 9 ·
Power Needed to Accelerate 1200 kg Car from Rest to 20 m/s
- wolves5
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Is total mechanical energy always split equally between kinetic and potential energy?
- wolves5
- · Replies 5 ·
Calculating Impulse for 0.5kg Ball Bouncing off Wall: Theta = 50
- ted_chou12
- · Replies 2 ·
What Force Is Needed to Roll a Wheelchair Over a Curb?
- AriAstronomer
- · Replies 1 ·
Relating traction force to weight in pulley equilibrium
- virtuoso735
- · Replies 10 ·
Energy Q released in inelastic collision with product particles at angles
- FLms
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Heat conduction in hollow cilinder.
- aranud
- · Replies 6 ·
Force between two blocks on a frictionless inclined plane
- b-pipe
- · Replies 1 ·
The Total Energy of an Object at Escape Velocity
- aeromat
- · Replies 1 ·
Negative maximum kinetic energy in Millikan's data?
- aeromat
- · Replies 1 ·
Why is it harder to open a car door when it's at an angle?
- Luke1121
- · Replies 2 ·
How do I correctly apply Kirchoff's Rule to this electric circuit problem?
- Ortix
- · Replies 5 ·
Does Compressing a Spring Affect Its Energy Release in Acid?
- PhDorBust
- · Replies 7 ·
Determine equation of state from entropy
- A_B
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How Is Work Calculated When a Force Varies with Position?
- b-pipe
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Heat needed to melt 8 kg metal block at melting point
- teggenspiller
- · Replies 7 ·
Is the Velocity Equation for SHM Correctly Derived Without Calculus?
- ProPM
- · Replies 3 ·
Why multiply atm by atmospheric pressure in pascals?
- gibson101
- · Replies 5 ·
Solve for Block Speed After 3m: F=50s^2, u=.3, v=2m/s
- joemama69
- · Replies 5 ·
Heat problem, determine mass of ice cube?
- gibson101
- · Replies 1 ·
What is the relationship between tension force and SHM?
- Peter G.
- · Replies 3 ·
Why Is My Integral Result Incorrect for Cosine of 2 Theta?
- PieOperator
- · Replies 2 ·
What Is the Acceleration of a Baseball Hit by a Bat?
- jbjohnybaker
- · Replies 1 ·
Calculating Current Gain of Op Amp for Converting Picoamps to Volts?
- d.sonali20
- · Replies 7 ·
Determining height of powerline by throwing ball upward
- PhySci83
- · Replies 2 ·
Minimum velocity for a sonic boom?
- Chris L
- · Replies 6 ·
How Can You Source Ball Bearings of Different Diameters but Identical Mass?
- Endorser
- · Replies 3 ·
Wien's displacement law's proof
- jonathanpun
- · Replies 1 ·
Fletcher's trolley apparatus - maximum value of coefficient
- aeromat
- · Replies 5 ·
Isolating t in horizontal motion equation
- mom2maxncoop
- · Replies 2 ·
Compute temperature rise from solar irradiance
- donbock
- · Replies 6 ·
Frictionless, horizontal table radius and speed ?
- Ynsgfnsv
- · Replies 1 ·
Magnetic Field in Rotating Cylinder w/ Non-Const. Angular Vel.
- cadmus
- · Replies 4 ·
Honors physics basic projectile motion question
- Kalix
- · Replies 3 ·
How Do You Calculate the Initial Speed and Angle of a Projectile?
- maff is tuff
- · Replies 5 ·
Drawing phase difference graphs for simple harmonic motion
- Peter G.
- · Replies 7 ·
Charged Plate w/ Gaussian Cylinder: Integral E*dA
- Idividebyzero
- · Replies 1 ·
Horizontal escape of a projectile
- kraigandrews
- · Replies 7 ·
Examples of the four fundamental forces
- mezzoforte
- · Replies 1 ·
Astronaut and space shuttle momentum
- kraigandrews
- · Replies 7 ·
Saturn satellite altitude and planet radius from orbital data
- mcdowellmg
- · Replies 5 ·
How many prime mover is needed to pull the crane with velocity 10m/min?
- ainaz89
- · Replies 3 ·
Bocce ball collisions and friction force problems
- green123
- · Replies 5 ·
Gravitation field strength/Potential - Mid point between two equal masses.
- RSG_9
- · Replies 8 ·
How Do You Calculate Angular Momentum for Different Pivot Points?
- AriAstronomer
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Thermodynamics - again, Part of the ice that melt :S
- Planck const
- · Replies 1 ·
Calculating Charge with known voltage and Capacitance in a network
- abigailb55
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Impulse of a ball hitting the wall
- miniradman
- · Replies 7 ·
How Do DC and AC Voltages Affect the Movement of an Iron Piece?
- epilot
- · Replies 7 ·
Can the magnetive field of a pedometer be cancelled at a very small scale
- syahrul123
- · Replies 1 ·
Plane landing with retarding force
- kraigandrews
- · Replies 19 ·
Pi Measons - frame of reference
- madeeeeee
- · Replies 1 ·
Finding air resistance constant from terminal velocity
- kraigandrews
- · Replies 9 ·
A 65 kg tranpoline artist Jumps
- jphillip
- · Replies 1 ·
Find equivalent capacitance in a network with parallels and series
- abigailb55
- · Replies 1 ·
Electric Force in a Square: Where is Best?
- Johnwing
- · Replies 7 ·
Calculating Height for Shaun White's Snowboarding Trick
- green123
- · Replies 13 ·
Electrical circuit with resistors problem
- zeev55
- · Replies 4 ·
What is the equation for the length of a falling chain through a hole?
- kraigandrews
- · Replies 2 ·
How to find a charge on a sphere in equilibrium?
- sphys4
- · Replies 4 ·