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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How to explain alternating emf?
- sgstudent
- · Replies 7 ·
A pelican flying along a horizontal path
- ArcherofScience
- · Replies 3 ·
Formula relating to Uncertainty Principle
- ZedCar
- · Replies 2 ·
Conical pendulum question - I really don't know what to do - ?
- GandhiReborn
- · Replies 8 ·
A test-tube filled with a liquid and was swing around
- rbwang1225
- · Replies 1 ·
Using Ampere's Law in finding H (magnetic field intensity)
- jadi929
- · Replies 1 ·
What is the Result of \(\vec{A} - \vec{B}\) Given Three Vectors Summing to Zero?
- Ammar w
- · Replies 4 ·
String hanging from the ceiling
- rbwang1225
- · Replies 2 ·
Finding coeficient of friction with a slope/blocks/a pulley
- DLH112
- · Replies 3 ·
Show that c^2(t^2) - x^2 - y^2 - z^2 is invariant under a change of frame
- phosgene
- · Replies 2 ·
Magnetic field from four parallel wires
- Niles
- · Replies 1 ·
Find the speed with which the box hits the ground.
- foreverlost
- · Replies 4 ·
Block sliding up friction incline with initial kinetic energy
- nchin
- · Replies 11 ·
2D momentum piece breaks problem
- coldsteel
- · Replies 1 ·
Solving a spring question using calculus
- docholliday
- · Replies 2 ·
Block on frictionless ramp: why PE equals change in KE
- nchin
- · Replies 3 ·
Centripetal Force - Banked Curve
- Nicolaus
- · Replies 5 ·
Finding Constant Force to Pull Board from Mass 1 Box
- Toranc3
- · Replies 13 ·
How Far Apart Are Two -5.00 C Charges with a 4000 N Repulsive Force?
- Kennedy111
- · Replies 1 ·
A ship, earth, and a missile. Which time gests dilated and why?
- HelloDrChewz
- · Replies 3 ·
Series/Parallel impedance problem
- Blastrix91
- · Replies 7 ·
Find the average power over one cycle
- s3a
- · Replies 4 ·
Multiple choice Current through Bulb A
- Mdhiggenz
- · Replies 3 ·
Calculating the stopping distance of a car sliding down an incline.
- waqaszeb
- · Replies 1 ·
Determining the coefficient of kinetic friction of a sled with a mass added.
- waqaszeb
- · Replies 1 ·
What's the Minimum Speed for a Stunt Car Jump at 10° Angle?
- Dylon
- · Replies 8 ·
Problem about Free Falling Objects
- Ammar w
- · Replies 3 ·
Momentum of a proton in de Broglie wavelength
- Alb
- · Replies 2 ·
Find mechanical energy lost when a cyclist goes down a hill
- Phys121VIU
- · Replies 3 ·
Moment of inertia spinning disk integration
- ShamelessGit
- · Replies 3 ·
Conservation of momentum and energy problem-Two particles conected by string
- Tanya Sharma
- · Replies 22 ·
Two balls carrying the same charge
- jgridlock
- · Replies 28 ·
How Loud Is a Firework Explosion at 4300 Meters Distance?
- songoku
- · Replies 8 ·
Electrostatic potential energy of a nonconducting sphere
- Edasaur
- · Replies 1 ·
What Is the Normal Force on a Sliding Ladder?
- Quantum1990
- · Replies 5 ·
Why does momentum conservation give m2v2 = m1v1 for a rock thrown from a boat?
- Glyper
- · Replies 3 ·
Series Resistor Problem: Finding the Equivalent Resistance
- Mdhiggenz
- · Replies 3 ·
Basic manipulating equation algebra problem?
- nchin
- · Replies 8 ·
Equations for fk, Wfk, and WF as an expression
- svfetz
- · Replies 3 ·
Electric potential due to two point charges
- aftershock
- · Replies 9 ·
Energy, force, acceleration, and work with time dependent position
- bdh2991
- · Replies 4 ·
Average acceleration of a car turning southwest
- xedothecat
- · Replies 3 ·
Ball on string catching on peg: energy conservation at highest point
- nchin
- · Replies 6 ·
Elastic collision between bowling ball and tennis ball
- bdh2991
- · Replies 1 ·
Forces/conservation of energy of slide/free fall
- bdh2991
- · Replies 20 ·
Applied Force on Superimposed Blocks
- Peppino
- · Replies 5 ·
Boy pulling himself up via pulley: normal force from platform
- misterc
- · Replies 1 ·
Acceleration, Distance, Velocity and time equations.
- Surgikill117
- · Replies 1 ·
Elevator decelerating to rest: tension and scale readings
- Scene
- · Replies 4 ·
What is the frictional force on the horse while pulling a wagon?
- asheik234
- · Replies 7 ·
Doppler effect with two moving objects including wind
- johnqwertyful
- · Replies 6 ·
Relating speed and engine horsepower of a ship to water resistance
- wowser
- · Replies 1 ·
Interesting angle of elevation problem
- steven1495
- · Replies 8 ·
Plank and two supports using torque
- coldsteel
- · Replies 4 ·
Moment of Inertia for a uniform wire
- SalsaOnMyTaco
- · Replies 1 ·
I with a Hooke's law experiment I did
- addy360
- · Replies 4 ·
Question on Newton's law of universal gravitation
- Lolagoeslala
- · Replies 2 ·
Justify if a mass is negligible.
- thatguythere
- · Replies 1 ·
Finding launch velocity and angle for projectile motion problems
- nando94
- · Replies 1 ·
How Do You Calculate Average Velocity for Different Directions?
- wezzyjoker
- · Replies 3 ·
How Do You Calculate the Impulse Exerted by the Ground on a Bouncing Ball?
- NasuSama
- · Replies 14 ·
Energy related problem (includes diagram)
- Gigantron
- · Replies 2 ·
Baseball and medicine ball thrown with different KE/P/V
- bdh2991
- · Replies 3 ·
Calculating acceleration of a box from force?
- InertialRef
- · Replies 1 ·
Simplifying Lorentz Force Formula
- RobertL
- · Replies 2 ·
How Do I Compute Radial Acceleration from i and j Components?
- samatar
- · Replies 1 ·
Energy stored in a single capacitor
- lat77
- · Replies 3 ·
Calculating Distance and Time for Two Cars on a One-Dimensional Road
- Questions999
- · Replies 6 ·
A child stands on the edge of a merry-go-round
- joe426
- · Replies 6 ·
Calculating Acceleration and Velocity of a Falling Ball in One Dimension
- Questions999
- · Replies 4 ·
How Do Forces and Motion Interact on an Inclined Plane with a Sliding Ramp?
- mtwain
- · Replies 3 ·
What Is the Average Power Delivered in Lifting a Box with Constant Acceleration?
- cowmoo32
- · Replies 2 ·
Minimize Effects of Earth's Magnetic Field
- RobertL
- · Replies 1 ·
Discharging a Capacitor: Calculating Energy Dissipation
- apamirRogue
- · Replies 1 ·
Find all three components of vector W
- Toranc3
- · Replies 4 ·
What Angle Does a Rice Grain Leave a Frictionless Billiard Ball?
- Larrytsai
- · Replies 4 ·
Circuit question: Why are these R in series and not in parallel?
- Parad0x88
- · Replies 3 ·
A strip of copper placed in a magnetic field
- 1MileCrash
- · Replies 5 ·
How Does Light Emerge from a Prism Using Snell's Law?
- PeachBanana
- · Replies 1 ·
Geometric Optics - Converging Lens
- PeachBanana
- · Replies 2 ·
How Much Energy Is Required to Change an Orbiting Body's Radius?
- assaftolko
- · Replies 3 ·
Finding the thrust of the spring.
- Kiely
- · Replies 1 ·
Force in The X direction using Lever Arm
- drummer8807
- · Replies 2 ·
Linear equations for amplitude factors
- aaaa202
- · Replies 6 ·
Momentum of a massless particle?
- phosgene
- · Replies 2 ·
Problem with Escape Velocity given final speed
- celestasia
- · Replies 2 ·
What Is the Magnitude of the Particle's Acceleration When Velocity Is Zero?
- Ammar w
- · Replies 2 ·
How Can Friction Have Two Directions in Finding Tension?
- thoradicus
- · Replies 1 ·
What Is the Minimum Initial Velocity to Roll Up a Carpet?
- bobsmith601
- · Replies 3 ·
Magnetic Field at a point due to two parallel wires
- smithisize
- · Replies 3 ·
Finding tension of a swinging mass
- hongus
- · Replies 2 ·
Planar wave normally incident on dielectric boundary
- cfitzU2
- · Replies 1 ·
I have a problem where two stars are at a certain time r0 apart from
- assaftolko
- · Replies 7 ·
Resistors/Battery Circuit solving. Maybe superposition
- Kalookakoo
- · Replies 1 ·
Spring stretch for mass moving in circular path
- Lolagoeslala
- · Replies 7 ·
How Much Work is Done Moving an Object Against a Spring Force?
- pxp004
- · Replies 6 ·
Rigid Box and 3D Schrodinger equation
- budafeet57
- · Replies 5 ·
Centre of mass Momentum problem-Two blocks
- Tanya Sharma
- · Replies 15 ·
A 4.4kg block is pushed along the ceiling
- madelines
- · Replies 2 ·
Can a rope be perfectly horizontal during a tug-of-war?
- hydra03
- · Replies 2 ·