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 Force on Block A in Accelerating Masses Problem
- Piamedes
- · Replies 2 ·
Finding charge on aluminum foil parallel-plate capacitor
- conniechiwa
- · Replies 5 ·
How Do You Calculate Rotations and Time With Uncertainty for Pulsar PSR 1937+21?
- truthfinder
- · Replies 6 ·
How to Calculate the Electric Field Near a Long Charged Wire?
- K3nt70
- · Replies 1 ·
Torque on a Current Loop in a B Field
- purduegirl
- · Replies 5 ·
Electric field of a charged arc
- brett812718
- · Replies 9 ·
How Long Does a Ball Take to Hit the Ground from a 12.5m Building?
- jameo15
- · Replies 3 ·
Why use x-rays to study crystals?
- chukie
- · Replies 2 ·
Halley's Comet speed at perihelion using energy conservation
- Jtappan
- · Replies 2 ·
The Relationship between work, force and distance
- tascja
- · Replies 4 ·
Work-energy theorem in relation to the velocity of two masses
- lfused
- · Replies 9 ·
Gas Expansion: The Property of Filling Volume and Shape
- vannenberg
- · Replies 2 ·
Spring constant and angular frequency for hanging block
- Kris1120
- · Replies 3 ·
Determine the magnitude of the maximum acceleration
- Kris1120
- · Replies 4 ·
What is the Equilibrium Temperature When Mixing Hot and Cold Water?
- moragan
- · Replies 4 ·
Why Is Sin A Used in the Cross Product Equation F=qvBsinA?
- glueball8
- · Replies 1 ·
Finding b for a Ball with Non-Uniform Density on a Circular Loop
- bodensee9
- · Replies 6 ·
Charge velocity and current density
- Defennder
- · Replies 4 ·
Static Equilibrium Beam/supports?
- 0338jw
- · Replies 12 ·
What is the Tension in a Two-Block System?
- spidey12
- · Replies 16 ·
What is the Maximum Torque on a Flat Coil in a Magnetic Field?
- purduegirl
- · Replies 7 ·
Why Is Calculating the Force on a Skier So Challenging?
- spidey12
- · Replies 2 ·
Rotational motion conservation of energy; time
- 0338jw
- · Replies 11 ·
Rotational motion, moment of inertia yoyo problem. PLEASE HELP
- 0338jw
- · Replies 13 ·
Force exerted on walls of metal box
- Rubidium
- · Replies 10 ·
How does force F on m1 affect m2 when they're stacked?
- asi123
- · Replies 8 ·
Calculating Net Force on a Solar Sailplane Traveling from Earth to Mars
- ally1h
- · Replies 2 ·
What is the correct formula for calculating launch speed off of the Earth?
- baylorbelle
- · Replies 11 ·
How to Calculate Speed Using Faraday's Law
- Laurie01
- · Replies 8 ·
Calculating 'Push' Force to Maintain Constant Speed
- Laurie01
- · Replies 4 ·
Velocities of three 0.5 lb balls after two collisions with e = 0.85
- prdoring
- · Replies 4 ·
Finding initial velocity for a baseball projectile with 40° angle and 90m range
- lilaSA
- · Replies 8 ·
RC Circuit - Currents at Timed Intervals
- purduegirl
- · Replies 3 ·
Current through capacitor in RC circuit after long time
- purduegirl
- · Replies 9 ·
Inertia balance/restoring force
- medguy1234
- · Replies 2 ·
Energy stored and dissipated in RC charging circuit with 21 mF capacitor
- purduegirl
- · Replies 9 ·
Rotational motion of rotating disc
- zila24
- · Replies 12 ·
Finding equilibrium temperature for ice, water, and aluminum
- raymondmorrow
- · Replies 5 ·
Spring-mass system energy table with 2.40 kg object and 41.0 N/m spring
- bb1235
- · Replies 2 ·
Finding spring constant k to produce 81 N*m torque on arm
- baylorbelle
- · Replies 5 ·
What Does Force Represent in the Equation P=Fv?
- nokia8650
- · Replies 1 ·
Finding initial velocity of a cart using two photogate timers
- Kristin_Z
- · Replies 8 ·
Circuit Analysis - Solving for unknown Voltage
- salman213
- · Replies 2 ·
Magnetic Field at a distance from the center of a Torodial Solenoid
- clope023
- · Replies 6 ·
Why did the radio tower collapse in the middle if stable at top and bottom?
- pooka
- · Replies 6 ·
How Fast Does a Flywheel Spin in a Stopping Hybrid Car?
- madmike1
- · Replies 7 ·
Flywheel speed when hybrid car brakes to a stop
- bakoo
- · Replies 3 ·
Finding vectors A and B from dot product equations
- student 1
- · Replies 10 ·
Verticle Banking on a circular track
- physicsnoob93
- · Replies 2 ·
What is the angular momentum of an electron
- pooka
- · Replies 2 ·
Two identical balls colliding at right angles and sticking together
- ace123
- · Replies 10 ·
"Understand Motion of Block on Turntable
- student 1
- · Replies 3 ·
Solving OCR M2 Questions: Bullets and Equations
- i25959341
- · Replies 4 ·
Does Roger or the diving board do work on the other?
- Vikingjl11
- · Replies 2 ·
Weight of a lion standing on th earth
- tim_mannire
- · Replies 6 ·
What is the Motion of the Center of Mass in a Billiard Ball Collision?
- zila24
- · Replies 19 ·
What are the speeds and compression in a collision with a spring?
- loststudent0
- · Replies 2 ·
Calculate Pressure in a Star at Center
- Irid
- · Replies 4 ·
Easy problem, but cant figure it out
- spidey12
- · Replies 20 ·
Sliding heavy crate across rough floor
- tim_mannire
- · Replies 1 ·
Finding mass from a scale reading of 1.47 × 10² N
- tim_mannire
- · Replies 7 ·
How Do Newton's 3rd Law and Skating Illustrate Action-Reaction Forces?
- tim_mannire
- · Replies 1 ·
Object subjected to constant force, determine the force
- student 1
- · Replies 8 ·
Finding David's velocity with respect to John
- student 1
- · Replies 2 ·
Linear speed and rotational quantity
- baylorbelle
- · Replies 3 ·
How Do You Calculate Electric Flux Through a Paraboloidal Surface?
- TheChicken
- · Replies 5 ·
How to Derive Beam Deflection Formula for a Double Cantilever Simple Beam?
- ***ALLI***
- · Replies 2 ·
Free-Body Diagrams: Solving for Tension and Weight
- unscientific
- · Replies 1 ·
Minimum Glass Thickness (m) for Light of l=610nm, d=1.30mm, L=2.00m, n=2.2
- pooka
- · Replies 1 ·
Line perpendicular to two skew lines L1 and L2
- Failure007
- · Replies 4 ·
Calculating Spring Compression from 1m Jump on Scale
- ace123
- · Replies 8 ·
Relativistic Doppler Shift and a Star breaking up
- TFM
- · Replies 68 ·
Mechanical energy of a sliding block
- Vikingjl11
- · Replies 8 ·
How to calculate temperature measurement uncertainty from repeated readings
- JoshMG
- · Replies 1 ·
Projectile Motion Cannon Question
- NBAJam100
- · Replies 2 ·
Calculating the A value of a physical pendulum
- ttk3
- · Replies 5 ·
Net force on solar-powered plane from Sun, Earth, and radiation pressure
- ally1h
- · Replies 10 ·
Two accelerating cars, does car 2 catch car 1 by t = 18 s?
- pc2-brazil
- · Replies 3 ·
Moving Proton in an Electric Field problem
- purduegirl
- · Replies 1 ·
What Is the Initial Phase Angle Beta in Wave Propagation?
- efairall
- · Replies 3 ·
Basic question on length contraction.
- pc2-brazil
- · Replies 2 ·
What does the scale read when two 100N weights are attached to a spring scale?
- alex_the_seal
- · Replies 4 ·
How Can a Toroid Approximate a Solenoid in Limiting Conditions?
- Chris W
- · Replies 4 ·
Propagating wave find initial phase angle?
- efairall
- · Replies 1 ·
How does shorter wavelength laser light allow more information on a disc?
- ah lai
- · Replies 1 ·
Pulley / conservation of energy problem (should be really easy)
- fvertk
- · Replies 24 ·
How Do You Calculate the Charge on a Capacitor in Series?
- purduegirl
- · Replies 1 ·
Maximum plate separation for a capacitor with 220V and 0.375 m² plates
- purduegirl
- · Replies 1 ·
Physics: Efficiency of toy car going upwards on a slope
- sciencerules
- · Replies 2 ·
What Is the Net Downward Force on a Water Tank's Bottom on Mars?
- mantillab
- · Replies 7 ·
Light reflected by two mirrors at 114 degrees with incident angle 66 degrees
- pooka
- · Replies 7 ·
Finding M in an Equilateral Triangle of Gravitating Spheres
- zila24
- · Replies 10 ·
Figuring out the direction of a magnetic field
- uday28fb
- · Replies 2 ·
What is the Coefficient of Kinetic Friction in These Physics Problems?
- Rade1990
- · Replies 6 ·
Why charges inside a solid metallic sphere tend to go to the surface?
- shanu_bhaiya
- · Replies 4 ·
Two little questions about friction
- Mr.Barker
- · Replies 1 ·
Calculating Energy in a Capacitor with +Q and -Q Charges
- pooka
- · Replies 9 ·
Determining static equlibrium reactions
- martix
- · Replies 4 ·
Cartesian vector application involving two forces.
- Failure007
- · Replies 4 ·