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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Make sure electro does not fall
- seto6
- · Replies 4 ·
Rod supported by cable with hanging mass and friction at wall
- mickellowery
- · Replies 5 ·
Two blocks on flat surface and incline with pulley: finding acceleration and tensions
- mickellowery
- · Replies 13 ·
How does friction affect the energy and motion of a damped spring-mass system?
- hasan_researc
- · Replies 5 ·
Circular Motion and Friction of car turning corner
- haroldtreen
- · Replies 4 ·
Rainfall rate for basement flooding using Bernoulli's equation
- mb218
- · Replies 1 ·
Solving for applied force to push an object up a ramp.
- agentnnc
- · Replies 1 ·
Student on Ladder (Equilibrium)
- SuperCass
- · Replies 9 ·
Primary voltage and transformers
- zebra1707
- · Replies 2 ·
Estimate the overall change of entropy for this system.
- mlostrac
- · Replies 5 ·
My teacher marked me wrong but it think this is right
- physicskid72
- · Replies 2 ·
At what position or positions on the x-axis is the electric potential 0?
- Mitchtwitchita
- · Replies 2 ·
Torque on Charges in an Electric Field
- Mitchtwitchita
- · Replies 3 ·
When Should the Violinist Play Her Note? Understanding Timing in an Orchestra
- physics(L)10
- · Replies 9 ·
Lorentz transformation of friction
- YangMills
- · Replies 1 ·
Electric Potential Between Multiple Points
- Mitchtwitchita
- · Replies 32 ·
Beam hinged to wall at 30°, supported by cable 2 m from end
- srhhhla
- · Replies 1 ·
Block and Strut Equilibrium Analysis
- SuperCass
- · Replies 2 ·
Finding work done by friction force
- Agent M27
- · Replies 6 ·
Mesuring coefficient of static friction
- kash123
- · Replies 8 ·
Solve Geometric Optics: Convex & Concave Lenses, Focal Lengths
- cyt91
- · Replies 4 ·
How to Calculate Net Impulse from Jumping Motion Analysis
- Trandall
- · Replies 1 ·
Solving the Friction Force Puzzle: Range of Acceleration for Slab
- Beamsbox
- · Replies 5 ·
Calculating Normal Force on an Inclined Plane: What Changes?
- hawk 1sr
- · Replies 2 ·
Initial speed of a thrown/falling stone
- physics newb
- · Replies 8 ·
Solving for Momentum Comparison: Masses and Kinetic Energy in Motion
- mcleodj2
- · Replies 2 ·
Why is the potential at P less than at Q if P is the positive terminal?
- ojsimon
- · Replies 3 ·
Potentiometer Circuit Question: Understanding Electron Flow and Resistance
- daysrunaway
- · Replies 6 ·
Force given mass, velocity, and displacement
- mandy9008
- · Replies 5 ·
Time for freight train to reach 84 km/h with constant force
- mandy9008
- · Replies 5 ·
Block sliding up a ramp with friction using energy conservation
- shuter
- · Replies 3 ·
Young's Modulus and Hooke's Law
- mlostrac
- · Replies 6 ·
What is the temperature at the joint between the two rods?
- mlostrac
- · Replies 9 ·
Calculate Mass of Planet with Density 4950 kg/m3 and Velocity 3.55 km/s
- clockworks204
- · Replies 2 ·
Calculating Tension and Angular Motion in a Pivoted Beam System
- Dalek_Supreme
- · Replies 8 ·
Finding Capacitance of a capacitor
- Mirole
- · Replies 4 ·
Adiabatic Process: Is Work Negative?
- traveler7
- · Replies 2 ·
Why is Young's modulus constant but spring constant variable?
- ishterz
- · Replies 1 ·
Calculating Local Gravity: How is g = 9.81m/s^2?
- Kat007
- · Replies 4 ·
What Determines the Total Power Output of a Battery?
- daysrunaway
- · Replies 1 ·
Static Equilibrium incorporating torque
- EV33
- · Replies 5 ·
Instantaneous relative velocity between two moving objects
- dstepp
- · Replies 2 ·
Electric Fields near the surface of the earth
- Mitchtwitchita
- · Replies 5 ·
'Centripetal Accelerations' and 'Radius of Curvatures' in Projectile Motion
- modulus
- · Replies 5 ·
What is the solution for a Two Block and Pulley System?
- SuperCass
- · Replies 5 ·
Ranking torques about a pivot with forces at 60° and 30° angles
- flynostrich08
- · Replies 1 ·
Calculating Max Speed of 0.3 kg Mass on Horizontal Spring
- flynostrich08
- · Replies 2 ·
Work (done by gravity) - pushing up a ramp
- mybrohshi5
- · Replies 12 ·
How Do You Calculate Voltage from Electric Field and Charge?
- Zamze
- · Replies 9 ·
Solving Circular Motion Problems: Uniformity and Changing Flash Frequency
- NachoKing
- · Replies 1 ·
'Simple' Pendulum in Hanging in a Car Udergoing Circular Motion
- modulus
- · Replies 4 ·
Static equilibruim in light spring
- jinx007
- · Replies 1 ·
How Do You Calculate the Potential Energy of a Spring?
- dulaville
- · Replies 3 ·
Calculating Work: Hammering a Nail with a 0.40kg Hammer at 5.0 m/s
- reahsalr
- · Replies 2 ·
Weird bouyancy/mass/density problem
- cubejunkies
- · Replies 3 ·
Mechanical Problem - Find Solution Here
- MHD93
- · Replies 4 ·
What is the final speed and direction of the first puck after collision?
- physics(L)10
- · Replies 10 ·
Work and power in force-displacement diagrams
- NachoKing
- · Replies 1 ·
How to Determine Relay Operation Cycle Time Using Natural and Forced Response?
- dhruv.tara
- · Replies 4 ·
Orbital Radius and Period: Doubling the Orbit
- flynostrich08
- · Replies 1 ·
Calculating Final Temperature of Lead Bullet
- leslie123
- · Replies 5 ·
Finding height of frictionless roller coaster
- Agent M27
- · Replies 4 ·
Elastic collisions and gravitational forces
- mickellowery
- · Replies 3 ·
Understanding the Work of Gravity: Exploring Positive and Negative Forces
- flynostrich08
- · Replies 1 ·
Energy in collisions - which statement is true
- flynostrich08
- · Replies 1 ·
Is Work Considered a Vector Quantity?
- flynostrich08
- · Replies 1 ·
Finding tension in wire holding 50 kg sign on 3 m beam
- flynostrich08
- · Replies 1 ·
What Angle Is the Road Banked for a 1000kg Car on a 25m Radius Track at 30m/s?
- superaznnerd
- · Replies 4 ·
Uniform circular motion statements
- flynostrich08
- · Replies 1 ·
Force exerted by string on wall for suspended fish at 30 degrees
- kboykb
- · Replies 9 ·
Moment of Inertia for a Disk with Hole
- SuperCass
- · Replies 5 ·
Exam Question: Rolling Ball on Concave Surface - Is Work Done?
- tomwilliam
- · Replies 4 ·
Finding q1,q2,q3; Electric charge problem
- Michael126
- · Replies 2 ·
Calculating Work for a Fired Projectile
- superaznnerd
- · Replies 1 ·
Static Friction of box on a ramp
- elbonymcbride
- · Replies 3 ·
How Does Exponential Decay Explain Light Absorption in Solutions?
- Moogie
- · Replies 3 ·
Gaining power from pulling a punch?
- Jeremy_V
- · Replies 59 ·
Circular motion (2 particles on a string)
- Geometor
- · Replies 3 ·
What is the general angle of theta?
- element41$
- · Replies 4 ·
How Does Kinematics Influence Base Running Techniques in Baseball?
- A2Airwaves
- · Replies 2 ·
Work and Friction: Boy Sliding Down Hill
- flynostrich08
- · Replies 5 ·
Why is an inverting summing amplifier used in audio mixers?
- thereddevils
- · Replies 2 ·
Why is only the k component considered? (Details inside)
- sgvaibhav
- · Replies 10 ·
Kinetic energy of a 500 kg satellite 200 km above Earth
- MasterAsia
- · Replies 2 ·
Conservation of Angular Momentum: angular speed
- mickellowery
- · Replies 3 ·
Changing force, linearly changing.
- Beamsbox
- · Replies 16 ·
Finding entropy involving metal in water
- aal0315
- · Replies 10 ·
Index of refraction and focal length question
- element41$
- · Replies 1 ·
Moment of inertia and angular acceleration of a pivoted stick
- humpdebump19
- · Replies 7 ·
How Does a Heat Engine's Efficiency Impact Its Exhaust Heat Rate?
- mlostrac
- · Replies 1 ·
Estimating Air Molecule Motion at STP
- mlostrac
- · Replies 4 ·
Difference between photon and electron collisions with atoms
- Daveami
- · Replies 3 ·
How Do You Calculate the Moment of Inertia for a Disk and Block System?
- pleasehelpme6
- · Replies 16 ·
Projectile motion of water hose
- mandy9008
- · Replies 2 ·
How do I rearrange this equation for T?
- mandy9008
- · Replies 1 ·
Which of the following statements are IMPOSSIBLE?
- traveler7
- · Replies 8 ·
Finding muzzle velocity using range and height of barrel
- physicsisrad
- · Replies 1 ·
Understanding Velocity and Vector Calculus for Moving Objects
- Engels
- · Replies 2 ·
What Are the Components of These Two Vectors?
- xupe33jrm
- · Replies 1 ·
How Do You Calculate Thrust for a Rising Model Helicopter?
- jinx007
- · Replies 1 ·