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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Temperature of an astroid between planets
- nwag93
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Forward biased ideal diode=>no voltage drop?
- pyroknife
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How Does Angular Motion Affect the Centrifugal Force on a Motorcar Wheel?
- Renni202
- · Replies 3 ·
Determining the damping constant from the ratio of amplitudes
- richyw
- · Replies 4 ·
Understanding 2D Motion: Finding Speed on a Slope
- thewestbrew
- · Replies 1 ·
What Is the Angular Frequency of Oscillation for a Mass Between Two Springs?
- woaini
- · Replies 2 ·
What is the Angle of a Dust Speck on a Turntable After 8 Seconds?
- Sylis
- · Replies 2 ·
Spring Displacement by Adding Mass
- woaini
- · Replies 1 ·
Mass needed to rebalance scale when large ball placed below flask
- woaini
- · Replies 3 ·
Three blocks are in contact with each other on a frictionless horizont
- SaviLovesTW
- · Replies 1 ·
Electrical energy production question
- nwag93
- · Replies 8 ·
Find the Friction (Rotational Problem)
- proximaankit
- · Replies 4 ·
Calculating Maximum Height and Equilibrium Height of Pendulum with Wind Force
- John John
- · Replies 1 ·
Finding temperature from equal radiant power
- BOAS
- · Replies 7 ·
Potential and Electric Field
- Philosophaie
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Force required to change the direction
- adjacent
- · Replies 8 ·
Current direction conventions and Kirchhoff's rules in circuits
- SecretSnow
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Why does reversing the integral limits change the sign twice?
- sbhit2001
- · Replies 13 ·
Why does a higher activation energy usually mean a slower reaction?
- needingtoknow
- · Replies 9 ·
Find the deadspot from distance from the speaker
- nickb145
- · Replies 3 ·
Direction of a moving charage and energy state of a magnetic dipole?
- Violagirl
- · Replies 4 ·
Three-Degree-Of-Freedom Spring System
- Valeron21
- · Replies 4 ·
Period of revolution of two double stars
- leftnes
- · Replies 4 ·
Which Operators Commute in Quantum Mechanics?
- Dassinia
- · Replies 2 ·
Rotational Torque, Forces, Tipping
- johnnnnyyy
- · Replies 1 ·
Angular Momentum of a paint ball
- Nicolaus
- · Replies 1 ·
Artificial Gravity on a Spinning Spaceship - Find the Period
- kchurchi
- · Replies 3 ·
Potential energy and conservation of energy problem
- magnolia1
- · Replies 1 ·
Power required to overcome friction and gravity on incline
- Panphobia
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Why Is My Calculation of Final Velocities in an Elastic Collision Incorrect?
- jubbly
- · Replies 3 ·
Special Relativity (speed taken to age only 13 years)
- Dave218
- · Replies 2 ·
A spring is attached to the ceiling by a string with no weights
- vstrimaitis
- · Replies 3 ·
Problem on a moving wedge and acceleration
- chester20080
- · Replies 3 ·
Find how long a beam of light emitted at a certain time takes to reach
- xdrgnh
- · Replies 2 ·
Otto cycle engine: work, efficiency, and state calculations
- Recipi
- · Replies 1 ·
Finding the force F in order to develop a moment.
- bigu01
- · Replies 2 ·
Is F=Δx/l*A the correct shear stress equation?
- tristanmagnum
- · Replies 13 ·
Calculating Energy Requirements for Solar-Powered Equipment Lift
- goli12
- · Replies 9 ·
Energy/work on incline plane with springs
- Panphobia
- · Replies 40 ·
Heat required to convert ice at certain temp. To water at certain temp
- astru025
- · Replies 5 ·
Finding coefficient of friction from ball slide experiment
- athena810
- · Replies 1 ·
Magnetic flux through triangular ring
- Ngineer
- · Replies 2 ·
Calculating force required of the deltoid muscle - statics problem
- omega5
- · Replies 6 ·
New weight at 1 mile in the sky
- pwhite4541
- · Replies 3 ·
Energy and power of water reservoir
- oddjobmj
- · Replies 13 ·
Find amount of water at 20 degrees to melt 100 g ice
- vtl
- · Replies 3 ·
How Is Maximum Elongation Calculated in a Spring System?
- MathewsMD
- · Replies 3 ·
How Is Work Calculated on a Slope with Deceleration?
- MathewsMD
- · Replies 4 ·
Using tensions to find maximum velocity
- MathewsMD
- · Replies 1 ·
Young's Modulus of guitar string
- amblove
- · Replies 2 ·
Sun-synchronous orbit: Implication on the orbit's inclination
- Paul Gray
- · Replies 2 ·
How Does a Hockey Puck Collision Affect Stick Motion?
- asaspades
- · Replies 1 ·
Can the Magnet and Picture Move on the Fridge?
- physicsnerd7
- · Replies 14 ·
How Does Friction Affect the Acceleration of a Moving Bureau?
- MathewsMD
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Why does normal force use sin or cos in friction problems?
- hbk69
- · Replies 13 ·
Angle of Incidence on a spherical lens
- Mitch0
- · Replies 1 ·
Circular motion and tension of a stone problem
- Coco12
- · Replies 1 ·
Angular Motion Conceptual Question
- FeelTheFire
- · Replies 4 ·
How Do You Calculate Movement After Cutting a String in a Pulley System?
- Dumbledore211
- · Replies 6 ·
How Do You Calculate Equivalent Resistance in a Complex Circuit?
- oreosama
- · Replies 3 ·
Escape Velocity from Earth-Moon System
- acfryman
- · Replies 3 ·
What Is the New Friction Force if Angular Speed Is Doubled?
- vaio-911
- · Replies 1 ·
Ballistic bullet pendulum conservation of momentum problem
- fifipaws
- · Replies 1 ·
How Is the Speed of a Man Calculated When Running Across a Boat Moving Upstream?
- MathewsMD
- · Replies 5 ·
Probability of N molecules in a volume of 3/4V and none in 1/4V
- curiousKevo
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A disc of radius r is spinning about its center
- mrknowknow
- · Replies 23 ·
Making an expression an explicit function of time
- leehufford
- · Replies 4 ·
Young's Experiment (destructive interference)
- roam
- · Replies 6 ·
The effect of spring force when perpendicular to displacement?
- bpmirsch
- · Replies 8 ·
Finding final kinetic energy of a system
- stripes
- · Replies 5 ·
Optics Newton’s ring apparatus Problem
- roam
- · Replies 2 ·
First Law of Thermodynamics and a bullet
- soccer4life
- · Replies 5 ·
Planet cooling from 100K to 50K using blackbody radiation
- ma18
- · Replies 12 ·
Why Does Tension Vary on Different Sides of an Accelerating Pulley?
- johnschmidt
- · Replies 5 ·
What Is the Acceleration Due to Gravity on Titania?
- Eagle's Wings
- · Replies 1 ·
Question relating to diameters of craters on the moon
- Remon
- · Replies 8 ·
Calculating the Height of a Building Using Free Fall Time
- Medgirl314
- · Replies 2 ·
Minimum linear velocity attained by sphere
- utkarshakash
- · Replies 3 ·
Total pressure at a depth in a fluid
- Molly1235
- · Replies 3 ·
The horizontal distance the train will move before its speed reduces?
- hbk69
- · Replies 39 ·
Time period of a simple gravity pendulum
- spiruel
- · Replies 1 ·
Man swing from on a rope (velocity)
- AdsBerger
- · Replies 8 ·
Angular Velocity of Center of Mass
- baubletop
- · Replies 18 ·
Error in Y-intercept, Least-square+Excel=True?
- PhysJs
- · Replies 2 ·
Physics Multiple Choice: Torque Direction
- NoobeAtPhysics
- · Replies 3 ·
How Much Waste Thermal Energy Does a 5% Efficient 100W Bulb Produce in an Hour?
- oMovements
- · Replies 4 ·
Ball colliding with wedge: can momentum be conserved in partially elastic collision?
- Kishlay
- · Replies 30 ·
Graphing the work done by a force along paths
- Trade
- · Replies 3 ·
Swinging Angle = 30° Swinging on a Rope: How Far Does He Go?
- AdsBerger
- · Replies 1 ·
What is the Moment Produced by a Perpendicular Force on an Inclined Plane?
- NoobeAtPhysics
- · Replies 8 ·
Serway pr 13 pg 49 college phys 8th ed, kinematics vel, dis
- GreyNoise
- · Replies 4 ·
Finding mass of block pushed with 150N force and friction coefficient 0.15
- yogoes123
- · Replies 1 ·
What is the Magnitude of F2 in a Hinged Beam Torque Problem?
- NoobeAtPhysics
- · Replies 2 ·
Particle moving in an electric field
- dwn
- · Replies 4 ·
What does n represent in the Vrms equation?
- Sastronaut
- · Replies 3 ·
Minimum Force (roller over step)
- BMcC
- · Replies 1 ·
Finding satellite orbital velocity from centripetal acceleration
- Coco12
- · Replies 10 ·
Find an equation for position vs time given potential vs position?
- razgriz129
- · Replies 1 ·
Calculating Kinetic Energy of Hurricane Winds: A Simple Model Approach
- baubletop
- · Replies 5 ·
Finding the Coefficient of Kinetic Friction Using Acceleration Data
- notdoing
- · Replies 1 ·